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The Ultimate Guide to Selecting Needle Roller Bearings
Needle roller bearings are roller bearings with cylindrical rollers that are both thin and long relative to their diameter. Despite their smaller cross-section, needle roller bearings have a high load-carrying capacity. Needle roller bearings are equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2.5, L is the roller length), so the radial structure is compact, and its inner diameter size and load capacity are the same as other types of bearings. , with the smallest outer diameter, especially suitable for support structures with radial installation dimensions. The surface area of the rollers and the large number of rolling load-bearing elements provide needle roller bearings with excellent load capacity and stiffness. Most radial needle roller bearings are designed to withstand axial forces in excess of 5% of the radial load. All needle bearings require some type of lubricant to help dissipate heat and reduce friction. The amount of friction depends on the load carried, the type and size of the needle bearing, the speed of rotation of the bearing and the properties of the lubricant used. Needle roller bearings, especially those with outer rings made of high-strength steel, also dampen shock and vibration.
Needle roller bearings come in many different design types. The needle roller is the load-bearing component of the bearing and is a common component for all needle roller bearing types. These allow the outer and inner rings to rotate almost friction-free. They are most commonly made of steel alloys. Raceways (if present) guide the rollers within the bearing. Although the inner and outer rings are designed to fit tightly, the necessary minimum clearance is required to account for thermal expansion and other differences. These products are typically made from carbon chromium steel or other alloys to increase hardness, fatigue resistance and dimensional stability.The bearing cage separates the rollers to keep the load evenly distributed around the bearing. They also reduce bearing noise, improve rolling conditions and prevent slippage.
Steel is the most commonly used cage material in needle roller bearings. Plastic cages may be used where operating conditions permit. Lubrication and surface treatments can reduce the heat generated by friction. Some drawn cup needle roller bearings are designed without a cage and contain a complete set of needle rollers. Full complement bearings combine maximum load carrying capacity with the low cost of drawn cup bearings. In this design, an inward-turning lip is used to secure the rollers in the bearing rings. Testing determined the following friction coefficient values for cage and full complement roller bearing designs:
Caged needle roller bearing: 15 • 10-4
Full complement needle roller bearings: 25 • 10-4
Where the coefficient of friction is defined by:
Coefficient of friction = (torque to turn bearing)/(load on bearing • bearing pitch radius)
Needle roller bearing seals
Seals isolate rollers, cages and lubricants from contaminants and moisture in harsh environments. Seals must be able to withstand the oxidation, heat and chemicals to which the bearing may be exposed. Sealed bearings often provide inner ring access holes in the outer ring so the bearing can be relubricated. Seals are very reliable when friction between the seal and the bearing or shaft is kept to a minimum. Additional surface treatment or lubrication can be used to reduce this friction. Bearings with integral seals are limited to relatively low rotational speeds compared to open bearings. Seals are usually made of acrylonitrile-butadiene rubber, polyurethane or fluoroelastomer. Since there is no contact between the components, there is no friction that must be taken into account in the implementation of the seal. Non-contact seals are preferred for high speeds. The most common non-contact seal is the labyrinth seal, and many of these seals are made of steel or other rigid metals.
Needle roller bearing lubrication
All needle bearings require lubrication. Most heavy-duty, machined needle roller bearing raceways may contain annular grooves and lubrication holes in the outer ring to help spread lubricant around the circumference of the bearing. Synthetic oil is most commonly used in high-quality bearings. Mineral oil is suitable for high speed use. Synthetic oil is suitable for medium to high speed. Oil exhibits good lubrication under heavy load/high speed conditions. Silicone oil has good heat resistance and will not corrode rubber, but is suitable for low speeds. Oil can be dripped, centrifuged or impregnated into the bearings.
Grease is best for medium to high rpm. Generally, lubricated bearings have lower high-speed torque than lubricated bearings, but the opposite is true at lower speeds. These are usually applied via a grease pack, but grease plating can also be used. Silicone grease has good heat resistance and will not corrode rubber, but is best suited for medium to low speed applications.
Types of needle roller bearings
Needle roller bearings are used to support mechanical moving components, bear loads and perform rotation, swing or reciprocating linear motion. Compared with general mechanical parts, needle roller bearings have higher accuracy and reliability indicators. There are many ways to classify needle roller bearings, which can be classified according to the structure type and size. The structure type is based on the direction of load the bearing bears, the shape of the rolling elements, the number of rows of rolling elements in each set of bearings, and whether it can be adjusted during operation. Classification is carried out in several directions such as heart. The size classification is based on the overall size of the bearing.
Drawn cup needle roller bearings
Drawn cup needle roller bearings are the most common type of needle roller bearings. They have a deep, thin-walled outer ring drawn from sheet metal. The hole is usually open but can also be capped on one side. They are designed to be mounted on a shaft. Experience smoother operation without the need for an inner ring. There are three main types of drawn cup needle roller bearings: drawn cup rings with a cage and an open end, drawn cup rings with a cage and a closed end, and full complement bearings with an open end.
Heavy duty needle roller bearings (machined)
Heavy-duty needle roller bearings with machined rings for higher load-bearing applications. Machined heavy-duty needle roller bearings are bearings with low cross-section height and high load ratings. The outer ring has high rigidity and can be easily used even with light alloy bearing seats. These bearings are available in metric and inch series, both with cage and full complement roller types. Therefore, it is possible to select bearings suitable for use under various conditions such as heavy loads, high-speed or low-speed rotation. There are two main types of heavy-duty needle roller bearings with machined rings – needle roller bearings without inner rings and needle roller bearings with inner rings. The inner ringless type uses the shaft as the raceway surface, so a compact design can be achieved.
Needle roller and cage assembly
Needle Roller and cage assemblies are single- or double-row units consisting of a cage or needle rollers contained in the cage. They do not have any bearing rings and are assembled between the shaft and housing. They have a higher load-bearing capacity within a smaller working range. Since their radial cross-section is no larger than the diameter of the needle roller, needle roller and cage assemblies allow the realization of bearing configurations with a very small radial design envelope. They have a very high load carrying capacity, are suitable for high speeds and are easy to install.
One way needle roller bearing
One-way needle roller bearing is a mechanical element specially used to transmit one-way rotation torque. It allows axial force to be transmitted only in one direction but not in the other direction. One-way needle roller bearings usually consist of outer rings, inner rings, rollers and cages. There is a certain gap between the outer ring and the inner ring, allowing the rollers to roll freely within them. The function of the cage is to maintain the position of the roller and prevent it falling out of the bearing. The working principle of one-way bearings is based on the rolling friction of rollers. When a rotational torque is applied to the outer ring, the rollers are acted upon by force and begin to roll. The rolling of the roller will generate a reaction force, causing the inner ring to also start to rotate. However, when the outer ring stops rotating, the rollers immediately stop rolling and the inner ring also stops rotating. This is because the structure of one-way bearings allows the rollers to only roll in one direction but not in the other.
Thrust needle roller bearing
Thrust needle roller bearings are used in applications where axial rather than radial loads are carried. The axis of the roller is perpendicular to the axis of the bearing bore. These types of bearings can accept heavy axial loads and shock loads. This type of bearing takes up no space than a thrust washer if the associated machine parts can serve as raceways. If not, a thrust washer must be installed on the machine.
Advantages of needle roller bearings
Needle roller bearings have many advantages such as high load bearing capacity, high precision, high-speed operation, low friction, and high reliability, so they are widely used in modern machinery manufacturing. The advantages of needle roller bearings can not only improve the operating efficiency of equipment, but also reduce failure rates and extend service life.
High load carrying capacity
Needle roller bearings are composed of an outer cylindrical mating surface, an inner conical mating surface and a needle roller. It has the advantage of high load bearing capacity. Compared with other bearings, needle roller bearings have a longer raceway length and a longer needle roller length, so they can effectively share the load and are not easily deformed. The design structure of needle roller bearings enables them to withstand large radial loads and axial loads, thus having a high load-bearing capacity. Among bearings of the same size, the load-carrying capacity of needle roller bearings is much greater than that of other types of bearings.
Adaptable
Due to their high load-bearing capacity and adaptability, needle roller bearings are widely used in a variety of different types of shaft, housing and seat designs, so they can be found in a variety of machines and equipment. Its characteristics enable it to adapt to different working conditions and application requirements, and can meet the bearing requirements under some special working environments and conditions.
High precision
Due to its relatively complex structure and high manufacturing process requirements, needle roller bearings have the advantage of high precision. The manufacturing accuracy of needle roller bearings can reach below 0.5μm or even above 0.1μm, and they are widely used in high-speed rotation and precision equipment.
High speed operation
Needle roller bearings also have the advantage of high-speed operation. Since the design and installation of needle roller bearing rollers have been optimized, the maximum speed of the bearing has reached an extremely high level, making it suitable for high-speed rotation and high-precision equipment.
Little friction
When a needle roller bearing machine is running, due to its unique rolling friction characteristics, the friction is small, which not only reduces energy consumption, but also reduces heat and noise. Especially during high-speed operation, the low friction characteristics of needle roller bearings are prominent.
long life
Because needle roller bearings show less wear and fatigue under frictional working conditions, have a solid structure and high precision internal components, their lifespan is much longer than that of ordinary bearings. This long life makes needle roller bearings widely used in some equipment that requires long-term stable operation.
High reliability
Needle roller bearings also have the advantage of high reliability. When a needle roller bearing fails, it is generally only partially damaged and has little impact on the entire bearing system. At the same time, when the service life is properly maintained, the life of needle roller bearings is also longer.
Needle roller bearing size chart
The Needle Roller Bearing Size Chart is a reference tool that provides information on needle roller bearing sizes and specifications. Needle roller bearings can handle high radial loads within a certain space and are widely used in various industries.Proper selection is essential to ensure optimal performance and service life of machinery and equipment. To assist in this process, it can serve as a valuable reference tool.Next, we’ll delve into the details of the needle roller bearing size chart, explain its importance and provide important insights to help you make informed decisions when selecting for your specific application.The size table of needle roller bearings usually includes the following information:
Bearing Name: This is a unique alphanumeric code or part number that identifies a specific needle bearing model. – Standard size bearings usually use inner diameter (ID), outer diameter (OD) and width (W) to indicate the bearing model.
Dimensions: The chart provides needle roller bearing dimensions, including the bearing’s inner diameter (ID), outer diameter (OD), and width or length (W or L). – “dr” represents the inner diameter (ID), “D” represents the outer diameter (OD), and “B(C)” represents the width (W).
Rated load: Needle roller bearings have dynamic load ratings and static load ratings. These values represent the maximum load that the bearing can withstand under dynamic or static conditions, respectively. – “Dynamic” means dynamic load rating, “Static” means static load rating.
Maximum Speed: This value represents the maximum speed at which a needle roller bearing can operate without generating excessive heat or failing prematurely. – “RPM” represents the maximum speed of the bearing model.
Additional Specifications: Charts may also include additional specifications such as the weight of the bearing, the type of cage used to hold the needle rollers, and any special features or variations of the bearing model. – Most of the detailed model specifications provided by the Aubearing bearing official website also include weight, chamfer and other information.
Drawn cup needle roller bearings size chart
| Part Number | Bore Dia | Outer Dia | Width | Ring Material | Dynamic Radial Load | Static Radial Load | Max Speed (X1000 rpm) | Weight |
| BCE1010 | 0.625″ | 0.8125″ | 0.625″ | Steel | 2338 lbf | 3664 lbf | 16 | 11 g |
| BCE1012 | 0.625″ | 0.8125″ | 0.75″ | Steel | 272 lbf | 4429 lbf | 16 | 14 g |
| BCE105 | 0.625″ | 0.8125″ | 0.3125″ | Steel | 967 lbf | 1169 lbf | 16 | 5 g |
| BCE107 | 0.625″ | 0.8125″ | 0.4375″ | Steel | 1484 lbf | 2113 lbf | 16 | 8 g |
| BCE107-1/2 | 0.625″ | 0.8125″ | 0.4689″ | Steel | 1596 lbf | 2316 lbf | 16 | 8 g |
| BCE108 | 0.625″ | 0.8125″ | 0.5″ | Steel | 1821 lbf | 2698 lbf | 16 | 9 g |
| BCE1110 | 0.6875″ | 0.875″ | 0.625″ | Steel | 245 lbf | 4047 lbf | 14.6 | 13 g |
| BCE1112 | 0.6875″ | 0.875″ | 0.75″ | Steel | 2967 lbf | 5148 lbf | 14.6 | 16 g |
| BCE118 | 0.6875″ | 0.875″ | 0.5″ | Steel | 1933 lbf | 2967 lbf | 14.6 | 10 g |
| BCE1210 | 0.75″ | 1″ | 0.625″ | Steel | 2878 lbf | 3934 lbf | 13.1 | 18 g |
| BCE1211-P | 0.75″ | 1″ | 0.6874″ | Steel | 2878 lbf | 3934 lbf | 13.1 | 22 g |
| BCE1212 | 0.75″ | 1″ | 0.75″ | Steel | 3462 lbf | 4968 lbf | 13.1 | 21 g |
| BCE126 | 0.75″ | 1″ | 0.375″ | Steel | 1596 lbf | 1866 lbf | 13.1 | 10 g |
| BCE128 | 0.75″ | 1″ | 0.5″ | Steel | 2203 lbf | 281 lbf | 14.7 | 14 g |
| BCE129-P | 0.75″ | 1″ | 0.5625″ | Steel | 2203 lbf | 281 lbf | 13.1 | 17 g |
| BCE1312 | 0.8125″ | 1.0625″ | 0.75″ | Steel | 3574 lbf | 5328 lbf | 13.6 | 24 g |
| BCE138 | 0.8125″ | 1.0625″ | 0.5″ | Steel | 2428 lbf | 3215 lbf | 12.2 | 16 g |
| BCE1412 | 0.875″ | 1.125″ | 0.75″ | Steel | 3799 lbf | 607 lbf | 11.4 | 28 g |
| BCE1416 | 0.875″ | 1.125″ | 1″ | Steel | 4968 lbf | 8543 lbf | 11.4 | 34 g |
| BCE146 | 0.875″ | 1.125″ | 0.375″ | Steel | 1843 lbf | 2405 lbf | 11.4 | 13 g |
| BCE148 | 0.875″ | 1.125″ | 0.5″ | Steel | 2518 lbf | 3552 lbf | 11.4 | 19 g |
| BCE1516 | 0.9375″ | 1.1875″ | 1″ | Steel | 5418 lbf | 9667 lbf | 11.8 | 38 g |
| BCE1612 | 1″ | 1.25″ | 0.75″ | Steel | 4047 lbf | 6744 lbf | 10.1 | 27 g |
| BCE1616 | 1″ | 1.25″ | 1″ | Steel | 5575 lbf | 10229 lbf | 10.1 | 38 g |
| BCE166 | 1″ | 1.25″ | 0.375″ | Steel | 1754 lbf | 2293 lbf | 10.1 | 18 g |
| BCE168 | 1″ | 1.25″ | 0.5″ | Steel | 2833 lbf | 4294 lbf | 10.1 | 19 g |
| BCE1812 | 1.125″ | 1.375″ | 0.75″ | Steel | 4249 lbf | 7644 lbf | 9.8 | 30 g |
| BCE1816 | 1.125″ | 1.375″ | 1″ | Steel | 5733 lbf | 11128 lbf | 9 | 40 g |
| BCE186 | 1.125″ | 1.375″ | 0.375″ | Steel | 1866 lbf | 2585 lbf | 9.8 | 19 g |
| BCE188 | 1.125″ | 1.375″ | 0.5″ | Steel | 2878 lbf | 4541 lbf | 9 | 21 g |
| BCE2010 | 1.25″ | 1.5″ | 0.625″ | Steel | 3934 lbf | 6969 lbf | 8.2 | 30 g |
| BCE2012 | 1.25″ | 1.5″ | 0.75″ | Steel | 4743 lbf | 888 lbf | 8.2 | 37 g |
| BCE2016 | 1.25″ | 1.5″ | 1″ | Steel | 607 lbf | 12364 lbf | 8.2 | 45 g |
| BCE2020 | 1.25″ | 1.5″ | 1.25″ | Steel | 7531 lbf | 15961 lbf | 8.2 | 56 g |
| BCE208 | 1.25″ | 1.5″ | 0.5″ | Steel | 3035 lbf | 4991 lbf | 8.2 | 22 g |
| BCE2212 | 1.375″ | 1.625″ | 0.75″ | Steel | 4833 lbf | 9554 lbf | 7.5 | 39 g |
| BCE2220 | 1.375″ | 1.625″ | 1.25″ | Steel | 7644 lbf | 1731 lbf | 8 | 81 g |
| BCE228 | 1.375″ | 1.625″ | 0.5″ | Steel | 3057 lbf | 5328 lbf | 8 | 25 g |
| BCE24-TN | 0.125″ | 0.25″ | 0.25″ | Steel | 241 lbf | 166 lbf | 31.5 | 1 g |
| BCE2410 | 1.5″ | 1.875″ | 0.625″ | Steel | 5485 lbf | 8206 lbf | 7.4 | 54 g |
| BCE2412 | 1.5″ | 1.875″ | 0.75″ | Steel | 6857 lbf | 10903 lbf | 6.7 | 62 g |
| BCE2414 | 1.5″ | 1.875″ | 0.875″ | Steel | 8093 lbf | 13489 lbf | 6.7 | 72 g |
| BCE2416 | 1.5″ | 1.875″ | 1″ | Steel | 8655 lbf | 14837 lbf | 6.7 | 83 g |
| BCE2420 | 1.5″ | 1.875″ | 1.25″ | Steel | 10678 lbf | 19334 lbf | 6.7 | 105 g |
| BCE248 | 1.5″ | 1.875″ | 0.5″ | Steel | 4181 lbf | 5845 lbf | 6.7 | 48 g |
| BCE2610 | 1.625″ | 2″ | 0.625″ | Steel | 5733 lbf | 8992 lbf | 6.2 | 55 g |
| BCE2620 | 1.625″ | 2″ | 1.25″ | Steel | 11465 lbf | 21806 lbf | 6.2 | 110 g |
| BCE2812 | 1.75″ | 2.125″ | 0.75″ | Steel | 7081 lbf | 12364 lbf | 6.3 | 82 g |
| BCE2816 | 1.75″ | 2.125″ | 1″ | Steel | 9217 lbf | 17085 lbf | 5.8 | 115 g |
| BCE2824 | 1.75″ | 2.125″ | 1.5″ | Steel | 13938 lbf | 29225 lbf | 6.3 | 163 g |
| BCE3216 | 2″ | 2.375″ | 1″ | Steel | 933 lbf | 17985 lbf | 5.1 | 102 g |
| BCE34-TN | 0.1875″ | 0.3437″ | 0.25″ | Steel | 402 lbf | 306 lbf | 21 | 1 g |
| BCE3410 | 2.125″ | 2.5″ | 0.625″ | Steel | 6969 lbf | 12814 lbf | 5.2 | 72 g |
| BCE36-TN | 0.1875″ | 0.3437″ | 0.375″ | Steel | 618 lbf | 528 lbf | 21 | 2 g |
| BCE3612 | 2.25″ | 2.625″ | 0.75″ | Steel | 8318 lbf | 16186 lbf | 4.6 | 89 g |
| BCE3616 | 2.25″ | 2.625″ | 1″ | Steel | 1124 lbf | 24055 lbf | 4.6 | 120 g |
| BCE44 | 0.25″ | 0.4375″ | 0.25″ | Steel | 36 lbf | 263 lbf | 35 | 2 g |
| BCE4412 | 2.75″ | 3.125″ | 0.75″ | Steel | 8768 lbf | 1821 lbf | 3.8 | 132 g |
| BCE45 | 0.25″ | 0.4375″ | 0.3125″ | Steel | 562 lbf | 47 lbf | 35 | 2 g |
| BCE47 | 0.25″ | 0.4375″ | 0.4375″ | Steel | 922 lbf | 899 lbf | 31.5 | 4 g |
| BCE48-P | 0.25″ | 0.4375″ | 0.5″ | Steel | 922 lbf | 877 lbf | 35 | 4 g |
| BCE55 | 0.3125″ | 0.5″ | 0.3125″ | Steel | 652 lbf | 585 lbf | 29 | 4 g |
| BCE57 | 0.3125″ | 0.5″ | 0.4375″ | Steel | 1057 lbf | 109 lbf | 29 | 6 g |
| BCE58-P | 0.3125″ | 0.5″ | 0.5″ | Steel | 1057 lbf | 109 lbf | 23 | 6 g |
| BCE59 | 0.3125″ | 0.5″ | 0.5625″ | Steel | 1349 lbf | 1484 lbf | 29 | 6 g |
| BCE610 | 0.375″ | 0.5625″ | 0.625″ | Steel | 1664 lbf | 2046 lbf | 25 | 7 g |
| BCE65 | 0.375″ | 0.5625″ | 0.3125″ | Steel | 652 lbf | 607 lbf | 25 | 3 g |
| BCE66 | 0.375″ | 0.5625″ | 0.375″ | Steel | 877 lbf | 888 lbf | 25 | 4 g |
| BCE66-P | 0.375″ | 0.5625″ | 0.375″ | Steel | 652 lbf | 607 lbf | 25 | 5 g |
| BCE67 | 0.375″ | 0.5625″ | 0.4375″ | Steel | 978 lbf | 1034 lbf | 25 | 5 g |
| BCE68 | 0.375″ | 0.5625″ | 0.5″ | Steel | 1304 lbf | 1484 lbf | 25 | 6 g |
| BCE69-P | 0.375″ | 0.5625″ | 0.5625″ | Steel | 1304 lbf | 1484 lbf | 25 | 7 g |
| BCE78 | 0.4375″ | 0.625″ | 0.5″ | Steel | 1439 lbf | 1754 lbf | 21.9 | 7 g |
| BCE810 | 0.5″ | 0.6875″ | 0.625″ | Steel | 1978 lbf | 2765 lbf | 19.5 | 9 g |
| BCE812 | 0.5″ | 0.6875″ | 0.75″ | Steel | 2226 lbf | 3215 lbf | 19.5 | 11 g |
| BCE85 | 0.5″ | 0.6875″ | 0.3125″ | Steel | 821 lbf | 888 lbf | 19.5 | 4 g |
| BCE86 | 0.5″ | 0.6875″ | 0.375″ | Steel | 1045 lbf | 1214 lbf | 19.5 | 5 g |
| BCE87 | 0.5″ | 0.6875″ | 0.4375″ | Steel | 1326 lbf | 1664 lbf | 19.5 | 6 g |
| BCE88 | 0.5″ | 0.6875″ | 0.5″ | Steel | 1551 lbf | 2023 lbf | 19.5 | 7 g |
| BCE89-P | 0.5″ | 0.6875″ | 0.5625″ | Steel | 1551 lbf | 2023 lbf | 19.5 | 10 g |
| BCE910 | 0.5625″ | 0.75″ | 0.625″ | Steel | 2113 lbf | 3147 lbf | 17.6 | 10 g |
| BCE912 | 0.5625″ | 0.75″ | 0.75″ | Steel | 2405 lbf | 3687 lbf | 17.6 | 12 g |
| BCE96 | 0.5625″ | 0.75″ | 0.375″ | Steel | 1169 lbf | 1439 lbf | 17.6 | 6 g |
| BCE98 | 0.5625″ | 0.75″ | 0.5″ | Steel | 1731 lbf | 2428 lbf | 17.6 | 9 g |
| BCH06604-P | 0.6667″ | 0.9375″ | 0.6882″ | Steel | 1664 lbf | 1798 lbf | 11 | 17 g |
| BCH1010 | 0.625″ | 0.875″ | 0.625″ | Steel | 2855 lbf | 3732 lbf | 15.3 | 16 g |
| BCH1012 | 0.625″ | 0.875″ | 0.75″ | Steel | 3305 lbf | 4496 lbf | 17.6 | 19 g |
| BCH1016 | 0.625″ | 0.875″ | 1″ | Steel | 4316 lbf | 6295 lbf | 15.3 | 25 g |
| BCH108 | 0.625″ | 0.875″ | 0.5″ | Steel | 2248 lbf | 2743 lbf | 15.3 | 13 g |
| BCH1110 | 0.6875″ | 0.9375″ | 0.625″ | Steel | 2878 lbf | 3867 lbf | 14.1 | 17 g |
| BCH1112 | 0.6875″ | 0.9375″ | 0.75″ | Steel | 3574 lbf | 5103 lbf | 16 | 20 g |
| BCH117 | 0.6875″ | 0.9375″ | 0.4375″ | Steel | 1888 lbf | 2248 lbf | 16 | 13 g |
| BCH1212 | 0.75″ | 1.0625″ | 0.75″ | Steel | 4159 lbf | 5305 lbf | 12.6 | 27 g |
| BCH1310 | 0.8125″ | 1.125″ | 0.625″ | Steel | 3619 lbf | 4743 lbf | 11.9 | 25 g |
| BCH1312 | 0.8125″ | 1.125″ | 0.75″ | Steel | 4316 lbf | 5957 lbf | 13.6 | 30 g |
| BCH1412 | 0.875″ | 1.1875″ | 0.75″ | Steel | 4406 lbf | 607 lbf | 11.1 | 32 g |
| BCH1416 | 0.875″ | 1.1875″ | 1″ | Steel | 5733 lbf | 8655 lbf | 11.1 | 43 g |
| BCH1610 | 1″ | 1.3125″ | 0.625″ | Steel | 3754 lbf | 5103 lbf | 11 | 35 g |
| BCH1612 | 1″ | 1.3125″ | 0.75″ | Steel | 4496 lbf | 6407 lbf | 9.8 | 36 g |
| BCH1614-P | 1″ | 1.3125″ | 0.875″ | Steel | 4496 lbf | 6407 lbf | 9.8 | 39 g |
Heavy duty needle roller bearings (machined) size chart
| Part Number | Bore Dia | Outer Dia | Width | Ring Material | Dynamic Radial Load | Static Radial Load | Max Speed (X1000 rpm) | Weight |
| NA4822-XL | 110 mm | 140 mm | 30 mm | Steel | 2383 lbf | 48559 lbf | 3.9 | 1080 g |
| NA4824-XL | 120 mm | 150 mm | 30 mm | Steel | 25179 lbf | 53729 lbf | 3.6 | 1170 g |
| NA4826-XL | 130 mm | 165 mm | 35 mm | Steel | 30124 lbf | 69691 lbf | 3.3 | 1810 g |
| NA4828-XL | 140 mm | 175 mm | 35 mm | Steel | 30574 lbf | 73063 lbf | 3.1 | 1920 g |
| NA4830-XL | 150 mm | 190 mm | 40 mm | Steel | 38667 lbf | 89924 lbf | 2.9 | 2720 g |
| NA4832-XL | 160 mm | 200 mm | 40 mm | Steel | 4069 lbf | 97792 lbf | 2.7 | 2890 g |
| NA4834-XL | 170 mm | 215 mm | 45 mm | Steel | 46985 lbf | 114653 lbf | 2.6 | 3960 g |
| NA4836-XL | 180 mm | 225 mm | 45 mm | Steel | 49233 lbf | 123645 lbf | 2.4 | 4200 g |
| NA4838-XL | 190 mm | 240 mm | 50 mm | Steel | 57326 lbf | 155118 lbf | 2.3 | 5610 g |
| NA4840-XL | 200 mm | 250 mm | 50 mm | Steel | 5845 lbf | 161862 lbf | 2.2 | 5840 g |
| NA4844-XL | 220 mm | 270 mm | 50 mm | Steel | 61822 lbf | 177599 lbf | 2 | 6380 g |
| NA4848-XL | 240 mm | 300 mm | 60 mm | Steel | 89924 lbf | 242794 lbf | 1.8 | 10000 g |
| NA4852-XL | 260 mm | 320 mm | 60 mm | Steel | 93296 lbf | 260778 lbf | 1.7 | 10600 g |
| NA4856-XL | 280 mm | 350 mm | 69 mm | Steel | 114653 lbf | 292252 lbf | 1.5 | 15300 g |
| NA4860-XL | 300 mm | 380 mm | 80 mm | Steel | 157366 lbf | 397912 lbf | 1.4 | 21800 g |
| NA4864-XL | 320 mm | 400 mm | 80 mm | Steel | 159614 lbf | 415897 lbf | 1.3 | 23000 g |
| NA4868-XL | 340 mm | 420 mm | 80 mm | Steel | 164111 lbf | 436129 lbf | 1.3 | 24200 g |
| NA4872-XL | 360 mm | 440 mm | 80 mm | Steel | 166359 lbf | 454114 lbf | 1.2 | 25600 g |
| NA4876-XL | 380 mm | 480 mm | 100 mm | Steel | 254034 lbf | 651946 lbf | 1.1 | 42600 g |
| NA49/22-XL | 22 mm | 39 mm | 17 mm | Steel | 5845 lbf | 6632 lbf | 15.3 | 80 g |
| NA49/28-XL | 28 mm | 45 mm | 17 mm | Steel | 6182 lbf | 7531 lbf | 13.6 | 97.7 g |
| NA49/32-XL | 32 mm | 52 mm | 20 mm | Steel | 7756 lbf | 10678 lbf | 11.1 | 158 g |
| NA4900-2RSR-XL | 10 mm | 22 mm | 14 mm | Steel | 1731 lbf | 1551 lbf | 14.8 | 24.5 g |
| NA4900-RSR-XL | 10 mm | 22 mm | 14 mm | Steel | 1731 lbf | 1551 lbf | 14.8 | 24.5 g |
| NA4900-XL | 10 mm | 22 mm | 13 mm | Steel | 2158 lbf | 2068 lbf | 24.6 | 23 g |
| NA4901-2RSR-XL | 12 mm | 24 mm | 14 mm | Steel | 1933 lbf | 1866 lbf | 13.9 | 27.5 g |
| NA4901-RSR-XL | 12 mm | 24 mm | 14 mm | Steel | 1933 lbf | 1866 lbf | 13.9 | 27.5 g |
| NA4901-XL | 12 mm | 24 mm | 13 mm | Steel | 2383 lbf | 245 lbf | 23.2 | 26 g |
| NA4902-2RSR-XL | 15 mm | 28 mm | 14 mm | Steel | 2181 lbf | 2316 lbf | 12.6 | 37 g |
| NA4902-RSR-XL | 15 mm | 28 mm | 14 mm | Steel | 2181 lbf | 2316 lbf | 12.6 | 37 g |
| NA4902-XL | 15 mm | 28 mm | 13 mm | Steel | 2698 lbf | 3057 lbf | 21.1 | 34 g |
| NA4903-2RSR-XL | 17 mm | 30 mm | 14 mm | Steel | 2248 lbf | 2473 lbf | 12 | 40 g |
| NA4903-RSR-XL | 17 mm | 30 mm | 14 mm | Steel | 2248 lbf | 2473 lbf | 12 | 40 g |
| NA4903-XL | 17 mm | 30 mm | 13 mm | Steel | 2788 lbf | 3282 lbf | 20 | 37 g |
| NA4904-2RSR-XL | 20 mm | 37 mm | 18 mm | Steel | 4384 lbf | 4474 lbf | 10.1 | 80 g |
| NA4904-RSR-XL | 20 mm | 37 mm | 18 mm | Steel | 4384 lbf | 4474 lbf | 10.1 | 80 g |
| NA4904-XL | 20 mm | 37 mm | 17 mm | Steel | 5328 lbf | 5733 lbf | 16.9 | 75.2 g |
| NA4905-2RSR-XL | 25 mm | 42 mm | 18 mm | Steel | 4901 lbf | 544 lbf | 8.6 | 89.5 g |
| NA4905-RSR-XL | 25 mm | 42 mm | 18 mm | Steel | 4901 lbf | 544 lbf | 8.6 | 89.5 g |
| NA4905-XL | 25 mm | 42 mm | 17 mm | Steel | 5957 lbf | 7081 lbf | 14.4 | 88 g |
| NA4906-2RSR-XL | 30 mm | 47 mm | 18 mm | Steel | 5373 lbf | 6407 lbf | 7.5 | 104 g |
| NA4906-RSR-XL | 30 mm | 47 mm | 18 mm | Steel | 5373 lbf | 6407 lbf | 7.5 | 104 g |
| NA4906-XL | 30 mm | 47 mm | 17 mm | Steel | 6407 lbf | 7981 lbf | 12.6 | 101 g |
| NA4907-2RSR-XL | 35 mm | 55 mm | 21 mm | Steel | 6632 lbf | 888 lbf | 6.4 | 175 g |
| NA4907-RSR-XL | 35 mm | 55 mm | 21 mm | Steel | 6632 lbf | 888 lbf | 6.4 | 175 g |
| NA4907-XL | 35 mm | 55 mm | 20 mm | Steel | 7981 lbf | 1124 lbf | 10.7 | 170 g |
| NA4908-2RSR-XL | 40 mm | 62 mm | 23 mm | Steel | 9217 lbf | 11915 lbf | 5.5 | 252 g |
| NA4908-RSR-XL | 40 mm | 62 mm | 23 mm | Steel | 9217 lbf | 11915 lbf | 5.5 | 252 g |
| NA4908-XL | 40 mm | 62 mm | 22 mm | Steel | 10903 lbf | 15062 lbf | 9.2 | 230 g |
| NA4909-2RSR-XL | 45 mm | 68 mm | 23 mm | Steel | 9667 lbf | 13264 lbf | 5.2 | 290 g |
| NA4909-RSR-XL | 45 mm | 68 mm | 23 mm | Steel | 9667 lbf | 13264 lbf | 5.2 | 290 g |
| NA4909-XL | 45 mm | 68 mm | 22 mm | Steel | 11465 lbf | 16411 lbf | 8.6 | 271 g |
| NA4910-2RSR-XL | 50 mm | 72 mm | 23 mm | Steel | 10116 lbf | 14388 lbf | 4.7 | 295 g |
| NA4910-RSR-XL | 50 mm | 72 mm | 23 mm | Steel | 10116 lbf | 14388 lbf | 4.7 | 295 g |
| NA4910-XL | 50 mm | 72 mm | 22 mm | Steel | 11915 lbf | 17985 lbf | 7.8 | 274 g |
| NA4911-XL | 55 mm | 80 mm | 25 mm | Steel | 14613 lbf | 22481 lbf | 7.2 | 393 g |
| NA4912-XL | 60 mm | 85 mm | 25 mm | Steel | 15287 lbf | 24279 lbf | 6.7 | 426 g |
| NA4913-XL | 65 mm | 90 mm | 25 mm | Steel | 15512 lbf | 25179 lbf | 6.3 | 456 g |
| NA4914-XL | 70 mm | 100 mm | 30 mm | Steel | 21357 lbf | 3507 lbf | 5.7 | 728 g |
| NA4915-XL | 75 mm | 105 mm | 30 mm | Steel | 21806 lbf | 36419 lbf | 5.4 | 775 g |
| NA4916-XL | 80 mm | 110 mm | 30 mm | Steel | 22706 lbf | 39117 lbf | 5.1 | 878 g |
| NA4917-XL | 85 mm | 120 mm | 35 mm | Steel | 28101 lbf | 5328 lbf | 4.6 | 1250 g |
| NA4918-XL | 90 mm | 125 mm | 35 mm | Steel | 29 lbf | 56202 lbf | 4.4 | 1312 g |
| NA4919-XL | 95 mm | 130 mm | 35 mm | Steel | 2945 lbf | 5845 lbf | 4.2 | 1371 g |
| NA4920-XL | 100 mm | 140 mm | 40 mm | Steel | 32372 lbf | 60698 lbf | 4 | 1900 g |
| NA4922-XL | 110 mm | 150 mm | 40 mm | Steel | 33497 lbf | 65195 lbf | 3.7 | 2070 g |
| NA4924-XL | 120 mm | 165 mm | 45 mm | Steel | 46086 lbf | 87675 lbf | 3.4 | 2860 g |
| NA4926-XL | 130 mm | 180 mm | 50 mm | Steel | 51481 lbf | 10566 lbf | 3.1 | 3900 g |
| NA4928-XL | 140 mm | 190 mm | 50 mm | Steel | 5328 lbf | 112404 lbf | 2.9 | 4150 g |
| NA69/22-XL | 22 mm | 39 mm | 30 mm | Steel | 9442 lbf | 12364 lbf | 15.3 | 150 g |
| NA69/28-XL | 28 mm | 45 mm | 30 mm | Steel | 10229 lbf | 14163 lbf | 13.6 | 182 g |
| NA69/32-ZW-XL | 32 mm | 52 mm | 36 mm | Steel | 11915 lbf | 18434 lbf | 11.1 | 288 g |
| NA6901-XL | 12 mm | 24 mm | 22 mm | Steel | 4069 lbf | 4856 lbf | 23.2 | 46 g |
| NA6902-XL | 15 mm | 28 mm | 23 mm | Steel | 4384 lbf | 5733 lbf | 21.1 | 63.6 g |
| NA6903-XL | 17 mm | 30 mm | 23 mm | Steel | 4743 lbf | 6519 lbf | 20 | 72 g |
| NA6904-XL | 20 mm | 37 mm | 30 mm | Steel | 9105 lbf | 11465 lbf | 16.9 | 141 g |
| NA6905-XL | 25 mm | 42 mm | 30 mm | Steel | 9892 lbf | 13264 lbf | 14.4 | 161 g |
| NA6906-XL | 30 mm | 47 mm | 30 mm | Steel | 11016 lbf | 15961 lbf | 12.6 | 192 g |
| NA6907-ZW-XL | 35 mm | 55 mm | 36 mm | Steel | 1214 lbf | 19334 lbf | 10.7 | 310 g |
| NA6908-ZW-XL | 40 mm | 62 mm | 40 mm | Steel | 16636 lbf | 26078 lbf | 9.2 | 430 g |
| NA6909-ZW-XL | 45 mm | 68 mm | 40 mm | Steel | 1776 lbf | 28551 lbf | 8.6 | 495 g |
| NA6910-ZW-XL | 50 mm | 72 mm | 40 mm | Steel | 18434 lbf | 31248 lbf | 7.8 | 515 g |
| NA6911-ZW-XL | 55 mm | 80 mm | 45 mm | Steel | 22931 lbf | 39566 lbf | 7.2 | 780 g |
| NA6912-ZW-XL | 60 mm | 85 mm | 45 mm | Steel | 2383 lbf | 42939 lbf | 6.7 | 808 g |
| NA6913-ZW-XL | 65 mm | 90 mm | 45 mm | Steel | 24279 lbf | 44512 lbf | 6.3 | 833 g |
| NA6914-ZW-XL | 70 mm | 100 mm | 54 mm | Steel | 32597 lbf | 59574 lbf | 5.7 | 1340 g |
| NA6915-ZW-XL | 75 mm | 105 mm | 54 mm | Steel | 33047 lbf | 61822 lbf | 5.4 | 1450 g |
| NA6916-ZW-XL | 80 mm | 110 mm | 54 mm | Steel | 34396 lbf | 67443 lbf | 5.1 | 1522 g |
| NA6917-ZW-XL | 85 mm | 120 mm | 63 mm | Steel | 42264 lbf | 89924 lbf | 4.6 | 2200 g |
| NA6918-ZW-XL | 90 mm | 125 mm | 63 mm | Steel | 43838 lbf | 95544 lbf | 4.4 | 2310 g |
| NA6919-ZW-XL | 95 mm | 130 mm | 63 mm | Steel | 44287 lbf | 98916 lbf | 4.2 | 2500 g |
| NAO12X24X13-XL | 12 mm | 24 mm | 13 mm | Steel | 2271 lbf | 2653 lbf | 23.6 | 30 g |
| NAO12X28X12-IS1-XL | 12 mm | 28 mm | 12 mm | Steel | 2923 lbf | 281 lbf | 22.9 | 40 g |
| NAO15X28X13-XL | 15 mm | 28 mm | 13 mm | Steel | 2495 lbf | 3215 lbf | 21.3 | 29 g |
| NAO15X32X12-IS1-XL | 15 mm | 32 mm | 12 mm | Steel | 3395 lbf | 3642 lbf | 20.9 | 50 g |
| NAO17X30X13-XL | 17 mm | 30 mm | 13 mm | Steel | 2653 lbf | 3574 lbf | 20.4 | 42 g |
| NAO17X35X16-XL | 17 mm | 35 mm | 16 mm | Steel | 5081 lbf | 5733 lbf | 19.2 | 78 g |
| NAO20X35X17-XL | 20 mm | 35 mm | 17 mm | Steel | 3777 lbf | 5845 lbf | 18.1 | 76 g |
| NAO20X37X16-XL | 20 mm | 37 mm | 16 mm | Steel | 5283 lbf | 6182 lbf | 17.2 | 82 g |
| NAO25X40X17-XL | 25 mm | 40 mm | 17 mm | Steel | 4968 lbf | 7644 lbf | 15.1 | 88 g |
Needle roller and cage assembly size chart
| Part Number | Bearing Type | Bore Dia | Outer Dia | Width | Needle Material | Dynamic Radial Load | Static Radial Load | Max Speed (X1000 rpm) | Weight |
| C060806 | Needle | 0.375″ | 0.5″ | 0.375″ | Steel | 899 lbf | 944 lbf | 30 | 2.5 g |
| C081008 | Needle | 0.5″ | 0.625″ | 0.5″ | Steel | 1484 lbf | 1956 lbf | 26 | 4.2 g |
| C091108 | Needle | 0.5625″ | 0.688″ | 0.625″ | Steel | 1641 lbf | 2293 lbf | 25 | 5.9 g |
| C091110 | Needle | 0.5625″ | 0.688″ | 0.625″ | Steel | 2203 lbf | 3372 lbf | 25 | 5.9 g |
| C101208 | Needle | 0.625″ | 0.75″ | 0.5″ | Steel | 1843 lbf | 2765 lbf | 24 | 5.2 g |
| C121616 | Needle | 0.75″ | 1″ | 1″ | Steel | 562 lbf | 7756 lbf | 21.2 | 26.4 g |
| C141816 | Needle | 0.875″ | 1.125″ | 1″ | Steel | 6519 lbf | 9779 lbf | 19.3 | 30.1 g |
| C162112 | Needle | 1″ | 1.313″ | 0.75″ | Steel | 6407 lbf | 8543 lbf | 16.7 | 32.6 g |
| C162116 | Needle | 1″ | 1.313″ | 1″ | Steel | 8206 lbf | 11915 lbf | 16.7 | 43.5 g |
| C182416 | Needle | 1.125″ | 1.5″ | 1″ | Steel | 9667 lbf | 13489 lbf | 14.7 | 59.3 g |
| C182420 | Needle | 1.125″ | 1.5″ | 1.25″ | Steel | 1169 lbf | 17085 lbf | 15 | 74.1 g |
| C202616 | Needle | 1.25″ | 1.625″ | 1″ | Steel | 10116 lbf | 14613 lbf | 13.4 | 64.9 g |
| C202812 | Needle | 1.25″ | 1.75″ | 0.75″ | Steel | 9779 lbf | 1169 lbf | 12.9 | 67.8 g |
| C222820 | Needle | 1.375″ | 1.75″ | 1.25″ | Steel | 12589 lbf | 19783 lbf | 12.3 | 88.2 g |
| C243016 | Needle | 1.5″ | 1.875″ | 1″ | Steel | 10791 lbf | 16636 lbf | 11.4 | 76.2 g |
| C243024 | Needle | 1.5″ | 1.875″ | 1.5″ | Steel | 15287 lbf | 26078 lbf | 11.4 | 114.3 g |
| C364216 | Needle | 2.25″ | 2.625″ | 1″ | Steel | 13489 lbf | 25179 lbf | 7.9 | 110.1 g |
| C404616 | Needle | 2.5″ | 2.875″ | 1″ | Steel | 13938 lbf | 27202 lbf | 7.2 | 121.4 g |
| C485424 | Needle | 3″ | 3.375″ | 1.5″ | Steel | 21132 lbf | 49233 lbf | 6.1 | 216 g |
| K100X107X21 | Needle | 100 mm | 107 mm | 21 mm | Steel | 10791 lbf | 28551 lbf | 4.8 | 120 g |
| K100X108X27 | Needle | 100 mm | 108 mm | 27 mm | Steel | 12814 lbf | 32148 lbf | 4.7 | 185 g |
| K100X108X30 | Needle | 100 mm | 108 mm | 30 mm | Steel | 15961 lbf | 42264 lbf | 4.7 | 180 g |
| K105X112X21 | Needle | 105 mm | 112 mm | 21 mm | Steel | 10678 lbf | 28551 lbf | 4.5 | 129 g |
| K10X13X10-TV | Needle | 10 mm | 13 mm | 10 mm | Steel | 1068 lbf | 1236 lbf | 29.5 | 1.6 g |
| K10X13X13-TV | Needle | 10 mm | 13 mm | 13 mm | Steel | 1394 lbf | 1754 lbf | 29.5 | 2.3 g |
| K10X13X16-TV | Needle | 10 mm | 13 mm | 16 mm | Steel | 1596 lbf | 2091 lbf | 29.5 | 2.9 g |
| K10X14X10-TV | Needle | 10 mm | 14 mm | 10 mm | Steel | 1304 lbf | 1349 lbf | 29 | 2.5 g |
| K10X14X13-TV | Needle | 10 mm | 14 mm | 13 mm | Steel | 1686 lbf | 1888 lbf | 29 | 4.6 g |
| K10X16X12-TV | Needle | 10 mm | 16 mm | 12 mm | Steel | 1821 lbf | 1619 lbf | 27.5 | 5.5 g |
| K110X117X24 | Needle | 110 mm | 117 mm | 24 mm | Steel | 12589 lbf | 3552 lbf | 4.3 | 172 g |
| K110X118X30 | Needle | 110 mm | 118 mm | 30 mm | Steel | 17535 lbf | 49233 lbf | 4.3 | 217 g |
| K115X123X27 | Needle | 115 mm | 123 mm | 27 mm | Steel | 14163 lbf | 38218 lbf | 4.1 | 200 g |
| K120X127X24 | Needle | 120 mm | 127 mm | 24 mm | Steel | 13264 lbf | 39117 lbf | 4 | 165 g |
| K125X133X35 | Needle | 125 mm | 133 mm | 35 mm | Steel | 19334 lbf | 5845 lbf | 3.8 | 275 g |
| K12X15X10-TV | Needle | 12 mm | 15 mm | 10 mm | Steel | 1102 lbf | 1371 lbf | 27 | 2.9 g |
| K12X15X13-TV | Needle | 12 mm | 15 mm | 13 mm | Steel | 1439 lbf | 1911 lbf | 27 | 2.3 g |
| K12X16X13-TV | Needle | 12 mm | 16 mm | 13 mm | Steel | 1798 lbf | 2113 lbf | 26.5 | 3.6 g |
| K12X17X13-TV | Needle | 12 mm | 17 mm | 13 mm | Steel | 2158 lbf | 2338 lbf | 26.5 | 4.9 g |
| K12X18X12-TV | Needle | 12 mm | 18 mm | 12 mm | Steel | 2248 lbf | 2226 lbf | 26 | 6 g |
| K130X137X24 | Needle | 130 mm | 137 mm | 24 mm | Steel | 13713 lbf | 41814 lbf | 3.7 | 170 g |
| K135X143X35 | Needle | 135 mm | 143 mm | 35 mm | Steel | 20458 lbf | 65195 lbf | 3.6 | 300 g |
| K145X153X26 | Needle | 145 mm | 153 mm | 26 mm | Steel | 16636 lbf | 50582 lbf | 3.3 | 262 g |
| K14X18X10 | Needle | 14 mm | 18 mm | 10 mm | Steel | 1596 lbf | 1911 lbf | 25 | 4 g |
| K14X18X13 | Needle | 14 mm | 18 mm | 13 mm | Steel | 1843 lbf | 2271 lbf | 25 | 6.5 g |
| K14X18X15-TV | Needle | 14 mm | 18 mm | 15 mm | Steel | 2136 lbf | 2765 lbf | 25 | 5 g |
| K14X18X17 | Needle | 14 mm | 18 mm | 17 mm | Steel | 2428 lbf | 3237 lbf | 25 | 8 g |
| K14X20X12 | Needle | 14 mm | 20 mm | 12 mm | Steel | 2316 lbf | 2383 lbf | 24.3 | 8.5 g |
| K150X160X46 | Needle | 150 mm | 160 mm | 46 mm | Steel | 33047 lbf | 10566 lbf | 3.2 | 570 g |
| K155X163X26 | Needle | 155 mm | 163 mm | 26 mm | Steel | 16861 lbf | 53055 lbf | 3.1 | 265 g |
| K15X18X17-TV | Needle | 15 mm | 18 mm | 17 mm | Steel | 1798 lbf | 272 lbf | 24.6 | 4.6 g |
| K15X19X10 | Needle | 15 mm | 19 mm | 10 mm | Steel | 1686 lbf | 2068 lbf | 24.3 | 5 g |
| K15X19X13 | Needle | 15 mm | 19 mm | 13 mm | Steel | 1911 lbf | 245 lbf | 24.3 | 7 g |
| K15X19X17 | Needle | 15 mm | 19 mm | 17 mm | Steel | 254 lbf | 3507 lbf | 24.3 | 9.5 g |
| K15X20X13 | Needle | 15 mm | 20 mm | 13 mm | Steel | 2226 lbf | 2585 lbf | 23.9 | 7 g |
| K15X21X15 | Needle | 15 mm | 21 mm | 15 mm | Steel | 3215 lbf | 3687 lbf | 23.6 | 11 g |
| K15X21X21 | Needle | 15 mm | 21 mm | 21 mm | Steel | 4361 lbf | 5463 lbf | 23.6 | 17 g |
| K160X170X46 | Needle | 160 mm | 170 mm | 46 mm | Steel | 34171 lbf | 114653 lbf | 3 | 550 g |
| K165X173X26 | Needle | 165 mm | 173 mm | 26 mm | Steel | 1821 lbf | 59574 lbf | 2.9 | 320 g |
| K16X20X10 | Needle | 16 mm | 20 mm | 10 mm | Steel | 1754 lbf | 2226 lbf | 23.6 | 5.5 g |
| K16X20X13 | Needle | 16 mm | 20 mm | 13 mm | Steel | 2001 lbf | 2653 lbf | 23.6 | 7.5 g |
| K16X20X17 | Needle | 16 mm | 20 mm | 17 mm | Steel | 263 lbf | 3777 lbf | 23.6 | 10 g |
| K16X22X12 | Needle | 16 mm | 22 mm | 12 mm | Steel | 2585 lbf | 281 lbf | 22.9 | 10 g |
| K16X22X16 | Needle | 16 mm | 22 mm | 16 mm | Steel | 3327 lbf | 3934 lbf | 22.9 | 12 g |
| K16X22X20 | Needle | 16 mm | 22 mm | 20 mm | Steel | 4114 lbf | 5126 lbf | 22.9 | 17 g |
| K16X24X20 | Needle | 16 mm | 24 mm | 20 mm | Steel | 4811 lbf | 5283 lbf | 22.4 | 22 g |
| K175X183X32 | Needle | 175 mm | 183 mm | 32 mm | Steel | 22256 lbf | 78683 lbf | 2.8 | 400 g |
| K17X21X10 | Needle | 17 mm | 21 mm | 10 mm | Steel | 1821 lbf | 2383 lbf | 22.9 | 5.5 g |
| K17X21X13 | Needle | 17 mm | 21 mm | 13 mm | Steel | 2338 lbf | 3282 lbf | 22.9 | 6.5 g |
| K17X21X17 | Needle | 17 mm | 21 mm | 17 mm | Steel | 2743 lbf | 4024 lbf | 22.9 | 9.5 g |
| K185X195X37 | Needle | 185 mm | 195 mm | 37 mm | Steel | 28776 lbf | 95544 lbf | 2.6 | 607 g |
| K18X22X10 | Needle | 18 mm | 22 mm | 10 mm | Steel | 1888 lbf | 254 lbf | 22.4 | 6 g |
| K18X22X13 | Needle | 18 mm | 22 mm | 13 mm | Steel | 2068 lbf | 2855 lbf | 22.4 | 8 g |
| K18X22X17 | Needle | 18 mm | 22 mm | 17 mm | Steel | 272 lbf | 4047 lbf | 22.4 | 11 g |
| K18X24X12 | Needle | 18 mm | 24 mm | 12 mm | Steel | 2878 lbf | 335 lbf | 21.8 | 12 g |
| K18X24X13 | Needle | 18 mm | 24 mm | 13 mm | Steel | 2945 lbf | 344 lbf | 21.8 | 13 g |
| K18X24X20 | Needle | 18 mm | 24 mm | 20 mm | Steel | 4541 lbf | 607 lbf | 21.8 | 18 g |
| K18X25X22 | Needle | 18 mm | 25 mm | 22 mm | Steel | 5193 lbf | 6519 lbf | 21.6 | 23 g |
| K195X205X37 | Needle | 195 mm | 205 mm | 37 mm | Steel | 299 lbf | 101164 lbf | 2.5 | 620 g |
| K19x23x13 | Needle | 19 mm | 23 mm | 13 mm | Steel | 2136 lbf | 3035 lbf | 21.8 | 8 g |
| K19x23x17 | Needle | 19 mm | 23 mm | 17 mm | Steel | 281 lbf | 4316 lbf | 21.8 | 11 g |
| K20X24X10 | Needle | 20 mm | 24 mm | 10 mm | Steel | 2001 lbf | 2833 lbf | 21.3 | 6.5 g |
| K20X24X13 | Needle | 20 mm | 24 mm | 13 mm | Steel | 2203 lbf | 3215 lbf | 21.3 | 9 g |
| K20X24X17 | Needle | 20 mm | 24 mm | 17 mm | Steel | 29 lbf | 4586 lbf | 21.3 | 12 g |
| K20X26X12 | Needle | 20 mm | 26 mm | 12 mm | Steel | 3012 lbf | 3642 lbf | 20.9 | 11 g |
| K20X26X13 | Needle | 20 mm | 26 mm | 13 mm | Steel | 3237 lbf | 4024 lbf | 20.9 | 12 g |
| K20X26X17 | Needle | 20 mm | 26 mm | 17 mm | Steel | 4316 lbf | 5845 lbf | 20.9 | 16 g |
| K20X26X20 | Needle | 20 mm | 26 mm | 20 mm | Steel | 4743 lbf | 6519 lbf | 20.9 | 19 g |
| K20X28X16 | Needle | 20 mm | 28 mm | 16 mm | Steel | 4451 lbf | 5036 lbf | 20.4 | 20 g |
| K20X28X20 | Needle | 20 mm | 28 mm | 20 mm | Steel | 5373 lbf | 6407 lbf | 20.4 | 27 g |
| K20X28X25 | Needle | 20 mm | 28 mm | 25 mm | Steel | 6857 lbf | 8768 lbf | 20.4 | 32 g |
| K20X30X30 | Needle | 20 mm | 30 mm | 30 mm | Steel | 7981 lbf | 933 lbf | 19.6 | 49 g |
| K210X220X42 | Needle | 210 mm | 220 mm | 42 mm | Steel | 34621 lbf | 125893 lbf | 2.3 | 740 g |
| K21X25X13 | Needle | 21 mm | 25 mm | 13 mm | Steel | 2271 lbf | 3395 lbf | 20.9 | 9 g |
| K220X230X42 | Needle | 220 mm | 230 mm | 42 mm | Steel | 3552 lbf | 132637 lbf | 2.2 | 790 g |
| K22X26X10 | Needle | 22 mm | 26 mm | 10 mm | Steel | 2046 lbf | 3012 lbf | 20.4 | 7.5 g |
| K22X26X13 | Needle | 22 mm | 26 mm | 13 mm | Steel | 2338 lbf | 3574 lbf | 20.4 | 9.5 g |
| K22X26X17 | Needle | 22 mm | 26 mm | 17 mm | Steel | 308 lbf | 5103 lbf | 20.4 | 12 g |
| K22X28X17 | Needle | 22 mm | 28 mm | 17 mm | Steel | 4361 lbf | 607 lbf | 19.6 | 18 g |
| K22X29X16 | Needle | 22 mm | 29 mm | 16 mm | Steel | 4496 lbf | 5733 lbf | 19.2 | 16 g |
| K22X30X15-TV | Needle | 22 mm | 30 mm | 15 mm | Steel | 4519 lbf | 5261 lbf | 18.8 | 18 g |
One way needle roller bearing size chart
| Part Number | Bore Dia | Outer Dia | Width | Ring Material | Dynamic Radial Load | Static Radial Load | Max Speed (X1000 rpm) | Weight |
| NA4822-XL | 110 mm | 140 mm | 30 mm | Steel | 2383 lbf | 48559 lbf | 3.9 | 1080 g |
| NA4824-XL | 120 mm | 150 mm | 30 mm | Steel | 25179 lbf | 53729 lbf | 3.6 | 1170 g |
| NA4826-XL | 130 mm | 165 mm | 35 mm | Steel | 30124 lbf | 69691 lbf | 3.3 | 1810 g |
| NA4828-XL | 140 mm | 175 mm | 35 mm | Steel | 30574 lbf | 73063 lbf | 3.1 | 1920 g |
| NA4830-XL | 150 mm | 190 mm | 40 mm | Steel | 38667 lbf | 89924 lbf | 2.9 | 2720 g |
| NA4832-XL | 160 mm | 200 mm | 40 mm | Steel | 4069 lbf | 97792 lbf | 2.7 | 2890 g |
| NA4834-XL | 170 mm | 215 mm | 45 mm | Steel | 46985 lbf | 114653 lbf | 2.6 | 3960 g |
| NA4836-XL | 180 mm | 225 mm | 45 mm | Steel | 49233 lbf | 123645 lbf | 2.4 | 4200 g |
| NA4838-XL | 190 mm | 240 mm | 50 mm | Steel | 57326 lbf | 155118 lbf | 2.3 | 5610 g |
| NA4840-XL | 200 mm | 250 mm | 50 mm | Steel | 5845 lbf | 161862 lbf | 2.2 | 5840 g |
| NA4844-XL | 220 mm | 270 mm | 50 mm | Steel | 61822 lbf | 177599 lbf | 2 | 6380 g |
| NA4848-XL | 240 mm | 300 mm | 60 mm | Steel | 89924 lbf | 242794 lbf | 1.8 | 10000 g |
| NA4852-XL | 260 mm | 320 mm | 60 mm | Steel | 93296 lbf | 260778 lbf | 1.7 | 10600 g |
| NA4856-XL | 280 mm | 350 mm | 69 mm | Steel | 114653 lbf | 292252 lbf | 1.5 | 15300 g |
| NA4860-XL | 300 mm | 380 mm | 80 mm | Steel | 157366 lbf | 397912 lbf | 1.4 | 21800 g |
| NA4864-XL | 320 mm | 400 mm | 80 mm | Steel | 159614 lbf | 415897 lbf | 1.3 | 23000 g |
| NA4868-XL | 340 mm | 420 mm | 80 mm | Steel | 164111 lbf | 436129 lbf | 1.3 | 24200 g |
| NA4872-XL | 360 mm | 440 mm | 80 mm | Steel | 166359 lbf | 454114 lbf | 1.2 | 25600 g |
| NA4876-XL | 380 mm | 480 mm | 100 mm | Steel | 254034 lbf | 651946 lbf | 1.1 | 42600 g |
| NA49/22-XL | 22 mm | 39 mm | 17 mm | Steel | 5845 lbf | 6632 lbf | 15.3 | 80 g |
| NA49/28-XL | 28 mm | 45 mm | 17 mm | Steel | 6182 lbf | 7531 lbf | 13.6 | 97.7 g |
| NA49/32-XL | 32 mm | 52 mm | 20 mm | Steel | 7756 lbf | 10678 lbf | 11.1 | 158 g |
| NA4900-2RSR-XL | 10 mm | 22 mm | 14 mm | Steel | 1731 lbf | 1551 lbf | 14.8 | 24.5 g |
| NA4900-RSR-XL | 10 mm | 22 mm | 14 mm | Steel | 1731 lbf | 1551 lbf | 14.8 | 24.5 g |
| NA4900-XL | 10 mm | 22 mm | 13 mm | Steel | 2158 lbf | 2068 lbf | 24.6 | 23 g |
| NA4901-2RSR-XL | 12 mm | 24 mm | 14 mm | Steel | 1933 lbf | 1866 lbf | 13.9 | 27.5 g |
| NA4901-RSR-XL | 12 mm | 24 mm | 14 mm | Steel | 1933 lbf | 1866 lbf | 13.9 | 27.5 g |
| NA4901-XL | 12 mm | 24 mm | 13 mm | Steel | 2383 lbf | 245 lbf | 23.2 | 26 g |
| NA4902-2RSR-XL | 15 mm | 28 mm | 14 mm | Steel | 2181 lbf | 2316 lbf | 12.6 | 37 g |
| NA4902-RSR-XL | 15 mm | 28 mm | 14 mm | Steel | 2181 lbf | 2316 lbf | 12.6 | 37 g |
| NA4902-XL | 15 mm | 28 mm | 13 mm | Steel | 2698 lbf | 3057 lbf | 21.1 | 34 g |
| NA4903-2RSR-XL | 17 mm | 30 mm | 14 mm | Steel | 2248 lbf | 2473 lbf | 12 | 40 g |
| NA4903-RSR-XL | 17 mm | 30 mm | 14 mm | Steel | 2248 lbf | 2473 lbf | 12 | 40 g |
| NA4903-XL | 17 mm | 30 mm | 13 mm | Steel | 2788 lbf | 3282 lbf | 20 | 37 g |
| NA4904-2RSR-XL | 20 mm | 37 mm | 18 mm | Steel | 4384 lbf | 4474 lbf | 10.1 | 80 g |
| NA4904-RSR-XL | 20 mm | 37 mm | 18 mm | Steel | 4384 lbf | 4474 lbf | 10.1 | 80 g |
| NA4904-XL | 20 mm | 37 mm | 17 mm | Steel | 5328 lbf | 5733 lbf | 16.9 | 75.2 g |
| NA4905-2RSR-XL | 25 mm | 42 mm | 18 mm | Steel | 4901 lbf | 544 lbf | 8.6 | 89.5 g |
| NA4905-RSR-XL | 25 mm | 42 mm | 18 mm | Steel | 4901 lbf | 544 lbf | 8.6 | 89.5 g |
| NA4905-XL | 25 mm | 42 mm | 17 mm | Steel | 5957 lbf | 7081 lbf | 14.4 | 88 g |
| NA4906-2RSR-XL | 30 mm | 47 mm | 18 mm | Steel | 5373 lbf | 6407 lbf | 7.5 | 104 g |
| NA4906-RSR-XL | 30 mm | 47 mm | 18 mm | Steel | 5373 lbf | 6407 lbf | 7.5 | 104 g |
| NA4906-XL | 30 mm | 47 mm | 17 mm | Steel | 6407 lbf | 7981 lbf | 12.6 | 101 g |
| NA4907-2RSR-XL | 35 mm | 55 mm | 21 mm | Steel | 6632 lbf | 888 lbf | 6.4 | 175 g |
| NA4907-RSR-XL | 35 mm | 55 mm | 21 mm | Steel | 6632 lbf | 888 lbf | 6.4 | 175 g |
| NA4907-XL | 35 mm | 55 mm | 20 mm | Steel | 7981 lbf | 1124 lbf | 10.7 | 170 g |
| NA4908-2RSR-XL | 40 mm | 62 mm | 23 mm | Steel | 9217 lbf | 11915 lbf | 5.5 | 252 g |
| NA4908-RSR-XL | 40 mm | 62 mm | 23 mm | Steel | 9217 lbf | 11915 lbf | 5.5 | 252 g |
| NA4908-XL | 40 mm | 62 mm | 22 mm | Steel | 10903 lbf | 15062 lbf | 9.2 | 230 g |
| NA4909-2RSR-XL | 45 mm | 68 mm | 23 mm | Steel | 9667 lbf | 13264 lbf | 5.2 | 290 g |
| NA4909-RSR-XL | 45 mm | 68 mm | 23 mm | Steel | 9667 lbf | 13264 lbf | 5.2 | 290 g |
| NA4909-XL | 45 mm | 68 mm | 22 mm | Steel | 11465 lbf | 16411 lbf | 8.6 | 271 g |
| NA4910-2RSR-XL | 50 mm | 72 mm | 23 mm | Steel | 10116 lbf | 14388 lbf | 4.7 | 295 g |
| NA4910-RSR-XL | 50 mm | 72 mm | 23 mm | Steel | 10116 lbf | 14388 lbf | 4.7 | 295 g |
| NA4910-XL | 50 mm | 72 mm | 22 mm | Steel | 11915 lbf | 17985 lbf | 7.8 | 274 g |
| NA4911-XL | 55 mm | 80 mm | 25 mm | Steel | 14613 lbf | 22481 lbf | 7.2 | 393 g |
| NA4912-XL | 60 mm | 85 mm | 25 mm | Steel | 15287 lbf | 24279 lbf | 6.7 | 426 g |
| NA4913-XL | 65 mm | 90 mm | 25 mm | Steel | 15512 lbf | 25179 lbf | 6.3 | 456 g |
| NA4914-XL | 70 mm | 100 mm | 30 mm | Steel | 21357 lbf | 3507 lbf | 5.7 | 728 g |
| NA4915-XL | 75 mm | 105 mm | 30 mm | Steel | 21806 lbf | 36419 lbf | 5.4 | 775 g |
| NA4916-XL | 80 mm | 110 mm | 30 mm | Steel | 22706 lbf | 39117 lbf | 5.1 | 878 g |
| NA4917-XL | 85 mm | 120 mm | 35 mm | Steel | 28101 lbf | 5328 lbf | 4.6 | 1250 g |
| NA4918-XL | 90 mm | 125 mm | 35 mm | Steel | 29 lbf | 56202 lbf | 4.4 | 1312 g |
| NA4919-XL | 95 mm | 130 mm | 35 mm | Steel | 2945 lbf | 5845 lbf | 4.2 | 1371 g |
| NA4920-XL | 100 mm | 140 mm | 40 mm | Steel | 32372 lbf | 60698 lbf | 4 | 1900 g |
| NA4922-XL | 110 mm | 150 mm | 40 mm | Steel | 33497 lbf | 65195 lbf | 3.7 | 2070 g |
| NA4924-XL | 120 mm | 165 mm | 45 mm | Steel | 46086 lbf | 87675 lbf | 3.4 | 2860 g |
| NA4926-XL | 130 mm | 180 mm | 50 mm | Steel | 51481 lbf | 10566 lbf | 3.1 | 3900 g |
| NA4928-XL | 140 mm | 190 mm | 50 mm | Steel | 5328 lbf | 112404 lbf | 2.9 | 4150 g |
| NA69/22-XL | 22 mm | 39 mm | 30 mm | Steel | 9442 lbf | 12364 lbf | 15.3 | 150 g |
| NA69/28-XL | 28 mm | 45 mm | 30 mm | Steel | 10229 lbf | 14163 lbf | 13.6 | 182 g |
| NA69/32-ZW-XL | 32 mm | 52 mm | 36 mm | Steel | 11915 lbf | 18434 lbf | 11.1 | 288 g |
| NA6901-XL | 12 mm | 24 mm | 22 mm | Steel | 4069 lbf | 4856 lbf | 23.2 | 46 g |
| NA6902-XL | 15 mm | 28 mm | 23 mm | Steel | 4384 lbf | 5733 lbf | 21.1 | 63.6 g |
| NA6903-XL | 17 mm | 30 mm | 23 mm | Steel | 4743 lbf | 6519 lbf | 20 | 72 g |
| NA6904-XL | 20 mm | 37 mm | 30 mm | Steel | 9105 lbf | 11465 lbf | 16.9 | 141 g |
| NA6905-XL | 25 mm | 42 mm | 30 mm | Steel | 9892 lbf | 13264 lbf | 14.4 | 161 g |
| NA6906-XL | 30 mm | 47 mm | 30 mm | Steel | 11016 lbf | 15961 lbf | 12.6 | 192 g |
| NA6907-ZW-XL | 35 mm | 55 mm | 36 mm | Steel | 1214 lbf | 19334 lbf | 10.7 | 310 g |
| NA6908-ZW-XL | 40 mm | 62 mm | 40 mm | Steel | 16636 lbf | 26078 lbf | 9.2 | 430 g |
| NA6909-ZW-XL | 45 mm | 68 mm | 40 mm | Steel | 1776 lbf | 28551 lbf | 8.6 | 495 g |
| NA6910-ZW-XL | 50 mm | 72 mm | 40 mm | Steel | 18434 lbf | 31248 lbf | 7.8 | 515 g |
| NA6911-ZW-XL | 55 mm | 80 mm | 45 mm | Steel | 22931 lbf | 39566 lbf | 7.2 | 780 g |
| NA6912-ZW-XL | 60 mm | 85 mm | 45 mm | Steel | 2383 lbf | 42939 lbf | 6.7 | 808 g |
| NA6913-ZW-XL | 65 mm | 90 mm | 45 mm | Steel | 24279 lbf | 44512 lbf | 6.3 | 833 g |
| NA6914-ZW-XL | 70 mm | 100 mm | 54 mm | Steel | 32597 lbf | 59574 lbf | 5.7 | 1340 g |
| NA6915-ZW-XL | 75 mm | 105 mm | 54 mm | Steel | 33047 lbf | 61822 lbf | 5.4 | 1450 g |
| NA6916-ZW-XL | 80 mm | 110 mm | 54 mm | Steel | 34396 lbf | 67443 lbf | 5.1 | 1522 g |
| NA6917-ZW-XL | 85 mm | 120 mm | 63 mm | Steel | 42264 lbf | 89924 lbf | 4.6 | 2200 g |
| NA6918-ZW-XL | 90 mm | 125 mm | 63 mm | Steel | 43838 lbf | 95544 lbf | 4.4 | 2310 g |
| NA6919-ZW-XL | 95 mm | 130 mm | 63 mm | Steel | 44287 lbf | 98916 lbf | 4.2 | 2500 g |
| NAO12X24X13-XL | 12 mm | 24 mm | 13 mm | Steel | 2271 lbf | 2653 lbf | 23.6 | 30 g |
| NAO12X28X12-IS1-XL | 12 mm | 28 mm | 12 mm | Steel | 2923 lbf | 281 lbf | 22.9 | 40 g |
| NAO15X28X13-XL | 15 mm | 28 mm | 13 mm | Steel | 2495 lbf | 3215 lbf | 21.3 | 29 g |
| NAO15X32X12-IS1-XL | 15 mm | 32 mm | 12 mm | Steel | 3395 lbf | 3642 lbf | 20.9 | 50 g |
| NAO17X30X13-XL | 17 mm | 30 mm | 13 mm | Steel | 2653 lbf | 3574 lbf | 20.4 | 42 g |
| NAO17X35X16-XL | 17 mm | 35 mm | 16 mm | Steel | 5081 lbf | 5733 lbf | 19.2 | 78 g |
| NAO20X35X17-XL | 20 mm | 35 mm | 17 mm | Steel | 3777 lbf | 5845 lbf | 18.1 | 76 g |
| NAO20X37X16-XL | 20 mm | 37 mm | 16 mm | Steel | 5283 lbf | 6182 lbf | 17.2 | 82 g |
| NAO25X40X17-XL | 25 mm | 40 mm | 17 mm | Steel | 4968 lbf | 7644 lbf | 15.1 | 88 g |
Thrust needle roller bearing size chart
| Part Number | Bore Dia | Outer Dia | Thickness | Needle Material | Dynamic Thrust Load | Static Thrust Load | Max Speed (X1000 rpm) |
| AXK0414-TV | 4 mm | 14 mm | 2 mm | Steel | 989 lbf | 1798 lbf | 21.5 |
| AXK0515-TV | 5 mm | 15 mm | 2 mm | Steel | 1068 lbf | 2068 lbf | 20.6 |
| AXK0619-TV | 6 mm | 19 mm | 2 mm | Steel | 1529 lbf | 3485 lbf | 18.9 |
| AXK0821-TV | 8 mm | 21 mm | 2 mm | Steel | 1754 lbf | 4361 lbf | 17.8 |
| AXK100135 | 100 mm | 135 mm | 4 mm | Steel | 20458 lbf | 125893 lbf | 2.4 |
| AXK1024 | 10 mm | 24 mm | 2 mm | Steel | 2068 lbf | 5733 lbf | 16.9 |
| AXK110145 | 110 mm | 145 mm | 4 mm | Steel | 21806 lbf | 139382 lbf | 2.2 |
| AXK120155 | 120 mm | 155 mm | 4 mm | Steel | 22931 lbf | 15287 lbf | 2.1 |
| AXK1226 | 12 mm | 26 mm | 2 mm | Steel | 2226 lbf | 6519 lbf | 15.2 |
| AXK130170 | 130 mm | 170 mm | 5 mm | Steel | 299 lbf | 18884 lbf | 1.9 |
| AXK140180 | 140 mm | 180 mm | 5 mm | Steel | 31024 lbf | 202328 lbf | 1.8 |
| AXK150190 | 150 mm | 190 mm | 5 mm | Steel | 32148 lbf | 215817 lbf | 1.7 |
| AXK1528 | 15 mm | 28 mm | 2 mm | Steel | 254 lbf | 8093 lbf | 13.2 |
| AXK160200 | 160 mm | 200 mm | 5 mm | Steel | 33272 lbf | 229305 lbf | 1.6 |
| AXK1730 | 17 mm | 30 mm | 2 mm | Steel | 2675 lbf | 888 lbf | 12.1 |
| AXK2035 | 20 mm | 35 mm | 2 mm | Steel | 2945 lbf | 10454 lbf | 10.5 |
| AXK2542 | 25 mm | 42 mm | 2 mm | Steel | 3305 lbf | 13039 lbf | 8.4 |
| AXK3047 | 30 mm | 47 mm | 2 mm | Steel | 3664 lbf | 15737 lbf | 7.3 |
| AXK3552 | 35 mm | 52 mm | 2 mm | Steel | 4002 lbf | 1821 lbf | 6.5 |
| AXK4060 | 40 mm | 60 mm | 3 mm | Steel | 6295 lbf | 25628 lbf | 5.6 |
| AXK4565 | 45 mm | 65 mm | 3 mm | Steel | 6744 lbf | 28776 lbf | 5.1 |
| AXK5070 | 50 mm | 70 mm | 3 mm | Steel | 7194 lbf | 32148 lbf | 4.7 |
| AXK5578 | 55 mm | 78 mm | 3 mm | Steel | 8543 lbf | 41814 lbf | 4.3 |
| AXK6085 | 60 mm | 85 mm | 3 mm | Steel | 10004 lbf | 52605 lbf | 3.9 |
| AXK6590 | 65 mm | 90 mm | 3 mm | Steel | 10454 lbf | 57326 lbf | 3.7 |
| AXK7095 | 70 mm | 95 mm | 4 mm | Steel | 1214 lbf | 57326 lbf | 3.5 |
| AXK75100 | 75 mm | 100 mm | 4 mm | Steel | 12364 lbf | 59574 lbf | 3.3 |
| AXK80105 | 80 mm | 105 mm | 4 mm | Steel | 12589 lbf | 62947 lbf | 3.1 |
| AXK85110 | 85 mm | 110 mm | 4 mm | Steel | 13039 lbf | 65195 lbf | 3 |
| AXK90120 | 90 mm | 120 mm | 4 mm | Steel | 16411 lbf | 91048 lbf | 2.7 |
| AXW10 | 10 mm | 27 mm | 3.2 mm | Steel | 2068 lbf | 5733 lbf | 16.9 |
| AXW12 | 12 mm | 29 mm | 3.2 mm | Steel | 2226 lbf | 6519 lbf | 15.2 |
| AXW15 | 15 mm | 31 mm | 3.2 mm | Steel | 254 lbf | 8093 lbf | 13.2 |
| AXW17 | 17 mm | 33 mm | 3.2 mm | Steel | 2675 lbf | 888 lbf | 12.1 |
| AXW20 | 20 mm | 38 mm | 3.2 mm | Steel | 2945 lbf | 10454 lbf | 10.5 |
| AXW25 | 25 mm | 45 mm | 3.2 mm | Steel | 3305 lbf | 13039 lbf | 8.4 |
| AXW30 | 30 mm | 50 mm | 3.2 mm | Steel | 3664 lbf | 15737 lbf | 7.3 |
| AXW35 | 35 mm | 55 mm | 3.2 mm | Steel | 4002 lbf | 1821 lbf | 6.5 |
| AXW40 | 40 mm | 63 mm | 4.2 mm | Steel | 6295 lbf | 25628 lbf | 5.6 |
| AXW45 | 45 mm | 68 mm | 4.2 mm | Steel | 6744 lbf | 28776 lbf | 5.1 |
| AXW50 | 50 mm | 73 mm | 4.2 mm | Steel | 7194 lbf | 32148 lbf | 4.7 |
| TC1018 | 0.625″ | 1.125″ | 0.078″ | Steel | 2158 lbf | 6632 lbf | 13 |
| TC1220 | 0.75″ | 1.25″ | 0.078″ | Steel | 2405 lbf | 7981 lbf | 11.3 |
| TC1423 | 0.875″ | 1.438″ | 0.078″ | Steel | 2878 lbf | 10454 lbf | 9.8 |
| TC1427 | 0.875″ | 1.688″ | 0.078″ | Steel | 4406 lbf | 18659 lbf | 8.9 |
| TC1625 | 1″ | 1.563″ | 0.078″ | Steel | 3125 lbf | 1214 lbf | 8.9 |
| TC1726 | 1.0625″ | 1.625″ | 0.078″ | Steel | 3395 lbf | 13713 lbf | 8.4 |
| TC1828 | 1.125″ | 1.75″ | 0.078″ | Steel | 3844 lbf | 16411 lbf | 7.9 |
| TC2031 | 1.25″ | 1.938″ | 0.078″ | Steel | 4474 lbf | 20458 lbf | 7.1 |
| TC2233 | 1.375″ | 2.063″ | 0.078″ | Steel | 4564 lbf | 21582 lbf | 6.6 |
| TC2435 | 1.5″ | 2.188″ | 0.078″ | Steel | 4833 lbf | 2383 lbf | 6.1 |
| TC2840 | 1.75″ | 2.5″ | 0.078″ | Steel | 5598 lbf | 30124 lbf | 5.2 |
| TC3244 | 2″ | 2.75″ | 0.078″ | Steel | 562 lbf | 32597 lbf | 4.1 |
| TC3648 | 2.25″ | 3″ | 0.078″ | Steel | 607 lbf | 3507 lbf | 4.4 |
| TC4052 | 2.5″ | 3.25″ | 0.078″ | Steel | 6182 lbf | 37768 lbf | 4 |
| TC411 | 0.25″ | 0.688″ | 0.078″ | Steel | 1371 lbf | 299 lbf | 19.2 |
| TC4860 | 3″ | 3.75″ | 0.078″ | Steel | 6632 lbf | 42714 lbf | 3.4 |
| TC512 | 0.3125″ | 0.75″ | 0.078″ | Steel | 1551 lbf | 3642 lbf | 18 |
| TC5266 | 3.25″ | 4.125″ | 0.126″ | Steel | 10903 lbf | 60698 lbf | 2.6 |
| TC613 | 0.375″ | 0.813″ | 0.078″ | Steel | 1596 lbf | 3979 lbf | 17.4 |
| TC815 | 0.5″ | 0.938″ | 0.078″ | Steel | 1911 lbf | 5305 lbf | 15.8 |
The Needle Roller Bearing Size Chart is a comprehensive reference guide that provides important information about the different types and sizes of needle roller bearings. It usually includes key parameters such as bore diameter, outer diameter, width and load-bearing capacity. Dimension charts can also provide additional details such as maximum speeds, tolerance classes, and available variations in cage design and materials. Needle roller bearing size charts accurately identify the appropriate bearing size required for a specific application. By referring to the chart, engineers and technicians can match the required size and load capacity to available needle bearing options.
Guide to selecting needle roller bearings
Needle roller bearings are generally not suitable for static loads. Such loads may damage the roller elements. This includes slow oscillating applications where the bearings rotate at less than 10 rpm. It is critical to re-examine and determine load and speed requirements before selecting the correct bearing type. This helps in selecting a suitable needle bearing that meets the specific requirements of the system and ensures proper functionality, longevity and efficiency. For example, high-speed applications require needle roller bearings that can handle high rotational speeds without excessive heat generation or wear. Likewise, heavily loaded applications will require larger needle bearings to support the weight without premature failure.
Operating temperature: Operating temperature is the temperature range in which the bearing can be used. In low temperature environments, lubricant viscosity increases, requiring higher minimum loads. The reference speed is the rotational speed at which heat dissipation and heat generation are balanced.
Maximum speed: The maximum speed is the highest speed at which the bearing is designed to operate. This is determined by the following factors: the strength of the bearing cage, the quality of lubrication, centrifugal and rotational forces, the precision of bearing manufacturing and the characteristics of the lubricant.
Needle Roller Bearing Life: Needle roller bearings are subjected to constant compression forces that will eventually cause spalling no matter how well maintained the bearing is. Bearing life is usually estimated based on the number of revolutions experienced before operation. Before determining the expected service life of a needle roller bearing, its basic load rating must first be calculated.
Measuring Needle Roller Bearing Sizes: Once you know your load and speed requirements, you need to size your bearings. The quickest way to determine the correct type is to use the reference number. Most needle bearings have these numbers engraved on them, but over time they can become difficult to read or completely erase. In these cases, you will need to measure the bearings yourself to get an accurate fit.
Accurate Measurement of Needle Roller Bearings: To measure a needle roller bearing in a good way, you need to determine its width (W), inner diameter (ID), and outer diameter (OD). To get accurate readings, measure OD at the widest point, ID at the narrowest point, and measure W between the two bearing rings. You can do this using vernier calipers or a ruler to ensure accurate measurements. Once you have these measurements, you can search for bearings by size using our bearing search tool.
Choosing the Right Needle Roller Bearing Type: There are many needle roller bearing types to choose. Each type is designed for a specific application, so it’s important to choose the type that suits your needs. Once you have measured your needle bearing, you can use our search to find the corresponding bearing type. This is called a suffix in the bearing reference.
For example, inner diameter: 12 mm; outer diameter: 18 mm; width: 16 mm
– Bearing type: HK1216
But that’s not all – needle roller bearings also have a suffix indicating the presence of a seal.
For example 2RS= 2 rubber seals = double seal
Needle Roller Bearing Clearance: Another important suffix to consider is the bearing clearance value. This determines the amount of space between the bearing races and can affect how the bearing performs under certain conditions. This clearance is necessary to accommodate any thermal expansion that may occur during operation and ensures that the bearing operates smoothly and efficiently. For example, if the bearing is likely to get hot, a larger gap may be needed to allow for thermal expansion.
C2 = Clearance smaller than international standard
No mark = standard clearance
C3 = Clearance larger than international standard
C4 = gap larger than C3
It is important to select the correct clearance for needle roller bearings based on the application requirements. Too much clearance can cause excessive vibration in a needle bearing, while too little clearance can cause the bearing to overheat and fail prematurely.
If you’re still not sure how to choose the right needle roller bearing and choose the perfect bearing type, feel free to consult a bearing expert. A bearing supplier or manufacturer can assist you with your specific requirements. At Aubearing, we are committed to providing the best bearing services. Contact us today to learn about how we can serve your needle roller bearing needs.