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SKF Bearing Cross Reference Chart and Interchange Guide
In regular industrial production and mechanical equipment maintenance, bearing selection and replacement is a crucial part. As the world’s most well-known bearing manufacturer, SKF’s products are widely used in various industries and are known for their high quality and reliability. . Since different brands of bearings have differences in structure, size, materials, etc., understanding the cross-reference chart and interchange methods of SKF bearings can help technicians maintain equipment efficiently and reduce operating costs. This article will delve into the cross-reference and interchange methods between SKF bearings and other brands of bearings, and provide a practical reference guide based on specific cases and technical details.
Bearing cross-referencing refers to the process of finding bearings with the same or similar specifications and functions between different brands and models to achieve replacement and interchange. It helps you find equivalent models of bearings of different brands, ensuring that during the replacement or procurement process, new bearings can seamlessly replace the original bearings and ensure the normal operation of the equipment.
Unified standards
Different regions and industries may use different brands of bearings. These bearings may differ in standards and specifications, but they usually follow some common international standards, such as ISO (International Organization for Standardization) standards. Therefore, mastering the cross-reference method of SKF bearings and other brands of bearings can help companies purchase and replace bearings flexibly on a global scale, reduce inventory costs, and improve equipment maintenance efficiency.
Applicability and compatibility
The main purpose of bearing cross-reference is to find alternative products with equivalent performance and size. In actual applications, technicians need to ensure that the size, load capacity, accuracy grade, etc. of the replacement bearing meet the requirements of the original equipment. This can avoid equipment failure or performance degradation caused by mismatch.
SKF bearing cross-reference
SKF provides a variety of online cross-reference tools, such as the SKF cross-reference web page and mobile application. These tools allow users to quickly find the corresponding SKF model by entering the bearing model of other brands. For example, by visiting the SKF official website, users can enter the bearing model of brands such as NSK, FAG, etc. and obtain the corresponding products of SKF. This tool greatly simplifies the cross-reference process and provides a convenient and fast solution.
Manual cross-reference process
In the absence of online tools, manual cross-reference can be performed by consulting technical manuals and bearing catalogs. The steps are as follows:
Identify the bearing type: determine the type of bearing that needs to be replaced, such as deep groove ball bearings, tapered roller bearings, etc.
Measure key dimensions: measure key dimensions such as the inner diameter, outer diameter and width of the bearing.
Find the SKF catalog: Find the corresponding model in the SKF bearing catalog based on the measured dimensions.
SKF Ball Bearings Cross reference
| Description | Interchange | |||||
|---|---|---|---|---|---|---|
| SKF | FAG | NSK | NTN | TIMKEN | ||
| Deep groove ball bearings Part Number | Thin section | 618xx | 618xx | 68xx | 68xx | 618xx |
| 619xx | 619xx | 69xx | 69xx | 619xx | ||
| Standard | 60xx | 60xx | 60xx | 60xx | 60xx | |
| 62xx | 62xx | 62xx | 62xx | 62xx | ||
| 63xx | 63xx | 63xx | 63xx | 63xx | ||
| 64xx | 64xx | 64xx | 64xx | 64xx | ||
| Narrow | 16xxx | 16xxx | 16xxx | 16xxx | 16xxx | |
| Extra small | 6xx | 6xx | 6xx | 6xx | 6xx | |
| Inch | Rxx | Rxx | Rxx | Rxx | ||
| With filling slots | 2xx | 2xx 3xx | BL2xx BL3xx | BL2xx BL3xx | 2xxW 3xxW | |
| Deep groove ball bearings Part Number Suffix | Contact seal, on one or both sides | RS1, 2RS1 | RSR, 2RSR | DU, DDU | LU, LLU | RS, 2RS |
| Contact seal, on one or both sides | RSH, 2RSH | RSR, 2RSR | DU, DDU | LU, LLU | RS, 2RS | |
| Low-friction seal, on one or both sides | RSL, 2RSL | LH, LLH | ||||
| Non-contact seal, on one or both sides | RZ, 2RZ | BRS, 2BRS | V, VV | LB, LLB | RZ, 2RZ | |
| Shield on one or both sides | Z, 2Z | Z, 2Z | Z, ZZ | Z, ZZ | Z, ZZ | |
| Snap ring groove | N | N | N | N | N | |
| Snap ring | NR | NR | NR | NR | NR | |
SKF Angular Contact Ball Bearings Interchange
| Description | Interchange | |||||
|---|---|---|---|---|---|---|
| SKF | FAG | NSK | NTN | TIMKEN | ||
| Single row angular contact ball bearings | Light | 72xxB | 72xxB | 72xxB | 72xxB | 72xxWN |
| Medium | 73xxB | 73xxB | 73xxB | 73xxB | 73xxWN | |
| Heavy | 74xxB | 74xxB | 74xxB | 74xxB | 74xxWN | |
| Double row angular contact ball bearings | Light | 32xxA | 32xx | 52xx | 52xx | 52xx |
| Medium | 33xxA | 33xx | 53xx | 53xx | 53xx | |
| Part Number Suffix | 40° contact angle | B | B | B | B | WN |
| 30° contact angle | A | A | A | |||
| 25° contact angle | AC | A5 | ||||
| Non-contact seal | -2RZ | 2RS | LLM | |||
| Contact seal | -2RS1 | 2RSR | LLD | |||
| Shield on both sides | -2Z | 2Z | ZZ | DD | ||
SKF Self-aligning Ball Bearings Interchange
| Description | Interchange | ||||
|---|---|---|---|---|---|
| SKF | FAG | NSK | NTN | ||
| Part number | Extra narrow | 12xx | 12xx | 12xx | 12xxS |
| Narrow | 13xx | 13xx | 13xx | 13xxS | |
| Wide | 22xx | 22xx | 22xx | 22xxS | |
| Extra wide | 23xx | 23xx | 23xx | 23xxS | |
| Part Number Suffix | Tapered bore | K | K | K | K |
| Contact seal | -2RS1 | 2RS | |||
SKF Roller Bearings Cross Reference
| Description | Interchange | ||||
|---|---|---|---|---|---|
| SKF | FAG/INA | NSK | TIMKEN | ||
| Cylindrical roller bearings Prefix | have two integral flanges on the outer ring and no flanges on the inner ring | NU | NU | NU | NU |
| have two integral flanges on the inner ring and no flanges on the outer ring | N | N | N | N | |
| have two integral flanges on the outer ring and one on the inner ring | NJ | NJ | NJ | NJ | |
| have two integral flanges on the outer ring and one integral flange and one non-integral flange | NUP | NUP | NUP | NUP | |
| Inch bearings | CRL CRM | ||||
| High-capacity | NCF | SL18 | NCF | ||
| High-capacity | NJG | SL19 | |||
| Double row | NNU | NNU | NNU | ||
| Double row | NN | NN | NN | ||
| Double row | NNUP | ||||
| Double row, full complement | NNCL | SL02 | |||
| Double row, full complement | NNCF | SL1850 | |||
| Double row, full complement | NNC | SL0148 SL0149 | |||
| Double row, full complement | NNF | SL0450 | |||
SKF Spherical Roller Bearings Interchange
| Description | Interchange | ||||
|---|---|---|---|---|---|
| SKF | FAG | NSK | TIMKEN | ||
| Part Number | Very light | 239xx | 239xx | 239xx | 239xx |
| Light | 230xx | 230xx | 230xx | 230xx | |
| 240xx | 240xx | 240xx | 240xx | ||
| Medium | 231xx | 231xx | 231xx | 231xx | |
| 241xx | 241xx | 241xx | 241xx | ||
| Heavy | 222xx | 222xx | 222xx | 222xx | |
| 232xx | 232xx | 232xx | 232xx | ||
| Extra heavy | 213xx | 213xx | 213xx | 213xx | |
| 223xx | 223xx | 223xx | 223xx | ||
| Part Number Suffix | Retaining flanges on the inner ring, guide ring centred on the inner ring, machined brass cage | CA, CAC | M | CAM | YM |
| Flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages | CC(J), CJ | C, CD | CJ | ||
| Optimized internal design for increased load carrying capacity | E | E1 | EA | ||
| Tapered bore, taper 1:12 | K | K | K | K | |
| Tapered bore, taper 1:30 | K30 | K30 | K30 | K | |
| Annular groove and three lubrication holes in the outer ring | W33 | S | E4 | W33 | |
| Bearing for vibratory applications, surface-hardened stamped steel cages | VA405 | T41A | C4U15-VS | W800C4 | |
| Same as VA405, but PTFE coated cylindrical inner ring bore | VA406 | ||||
Comparison of Bearing Technical Parameters
When performing bearing swaps, technicians need to compare the following key technical parameters in detail:
Bearing type and size: including inner diameter, outer diameter, width, rolling element type, etc.
Load capacity: including dynamic load and static load, to ensure that the new bearing can withstand the same or greater load.
Operating speed: Different bearings have different adaptability to speed, and bearings suitable for the operating speed of the equipment must be selected.
Accuracy grade: Determine the accuracy grade of the bearing, such as P0, P6, P5, etc., to meet the operating requirements of the equipment.
SKF Bearing Interchange Case
Automobile transmission system bearing replacement. A company found that the original FAG brand tapered roller bearings were worn and needed to be replaced during the maintenance of its automobile transmission system. Due to the superiority of SKF bearings in durability and performance, they decided to use SKF bearings for replacement.
Original bearing model: FAG 32008-X
SKF replacement model: SKF 32008 X/Q
Parameter | FAG 32210A | SKF 32210 J2/Q |
Inner Diameter (mm) | 50 | 50 |
Outer Diameter (mm) | 90 | 90 |
Width (mm) | 23.25 | 23.25 |
Dynamic Load (kN) | 121 | 125 |
After cross-reference and technical parameter comparison, it was found that the size and load capacity of SKF 32008 X/Q bearings are fully compatible with FAG 32008-X. After the replacement, the equipment runs stably and the bearing life is significantly extended.
Notes on bearing interchange
Load matching
When choosing a replacement bearing, you must ensure that the load capacity of the new bearing matches or exceeds the original bearing. The technical specification table provided by SKF lists the dynamic and static load capacity of each model in detail. You need to choose the appropriate bearing according to the actual working conditions of the equipment.
Accuracy grade and clearance
Different applications have different requirements for bearing accuracy. During the interchange process, you must ensure that the accuracy grade of the new bearing meets or exceeds the requirements of the equipment. SKF bearings provide multiple accuracy grade options, such as P0, P6, P5, etc. You can choose the appropriate model according to the specific application.
Lubrication and sealing
SKF bearings have a variety of options for lubrication and sealing. During the replacement process, it is necessary to select the appropriate lubrication method (such as oil lubrication or grease lubrication) and sealing type (such as open type, sealed type, etc.) according to the use environment and requirements of the equipment to ensure the long life and high performance of the bearing in the working environment.
Temperature adaptability
SKF bearings can maintain stable performance in both high and low temperature environments. When selecting a replacement bearing, the temperature adaptability of the bearing should be considered to ensure that it can operate stably within the operating temperature range of the equipment.
Installation and maintenance
Proper installation and maintenance are essential to the service life of the bearing. During the replacement process, the SKF installation and maintenance manual should be strictly followed to avoid bearing damage or equipment failure caused by improper installation or insufficient maintenance.
Conclusion
SKF bearings have become the first choice for equipment maintenance and replacement in various industries with their high quality and diverse product lines. By mastering the cross-reference and interchange methods of SKF bearings, technicians can manage equipment maintenance and replacement efficiently, improve production efficiency, and reduce operating costs. This article provides a complete technical guide by introducing the cross-reference tool, manual reference method and practical application cases of SKF bearings in detail, helping users to better replace and maintain bearings in practical applications.
References:
SKF Group. (n.d.). Bearing Selection Process. Retrieved from https://www.skf.com
ISO 15:2017. (2017). Rolling Bearings – Radial Bearings – Boundary Dimensions, General Plan. International Organization for Standardization.
NSK Bearing Catalogue. (n.d.). NSK Ltd. Retrieved from https://www.nsk.com
FAG Bearing Catalogue. (n.d.). Schaeffler Technologies AG & Co. KG. Retrieved from https://www.schaeffler.com
SKF Bearing Interchange Tool. (n.d.). Retrieved from https://www.skf.com/services/product-services/bearing-interchange