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Thrust Ball Bearings

A thrust ball bearing is a bearing specially designed to bear axial loads, consisting of washers, cages and balls. The characteristic of this bearing is that it can only bear axial loads, that is, forces in the direction parallel to the shaft, but not radial loads. Thrust ball bearings are divided into two types: flat base pad type and self-aligning spherical seat pad type. Its structure includes shaft ring, seat ring, cage and steel ball. These components can be separated, making installation and maintenance relatively simple. Thrust ball bearings manufactured by Aubearing are widely used in various mechanical devices, such as automobiles, aircraft engines, industrial machinery, gearboxes, etc., and any occasion that needs to bear axial loads may use this type of bearing. The thrust ball bearing catalog summarized by Aubearing provides complete model numbers, size tables, price inquiries and CAD drawings that can be downloaded for free.

Type: single-direction, double-direction, miniature

Thrust bearings help equipment reduce friction and carry loads, allowing its various parts to rotate or perform linear motion. Thrust ball bearings reduce a lot of friction and stress generated by the contact between metal materials, effectively preventing premature wear and degradation of metal materials. Enable the components of mechanical equipment to work properly and extend their durability and service life. According to the function of the thrust ball bearing, its types include one-direction thrust ball bearing and double-direction thrust ball bearing.

The working principle of the one-way thrust ball bearing is based on its design, which allows it to bear loads only in one specific direction. This feature makes the one-way thrust ball bearing very useful in applications where the movement of the shaft or housing in one direction needs to be limited. Since it cannot bear radial loads, when choosing to use a one-way thrust ball bearing, it is necessary to ensure that the force in the application is one-way to avoid exceeding the design limit of the bearing.

  • One-way thrust ball bearings can only bear axial loads in one direction. Due to their specific design, the limit speed of one-way thrust ball bearings is low. There are two types of one-way thrust ball bearings, one with a flat seat ring or one with a self-aligning seat ring. Bearings with self-aligning seat rings can be used with self-aligning seat washers to compensate for the angular alignment error between the support surface in the bearing seat and the shaft.
  • Double-way thrust ball bearings can bear axial loads in both positive and negative directions, have strong load capacity, and have good rigidity and stability. Compared with one-way thrust ball bearings, its structure is more complex and its size is relatively large.

Material: Chrome steel, stainless steel, ceramic mixture, plastic

Chrome steel: The most commonly used material for thrust ball bearings manufactured by Aubearing is chrome steel. ‌This material is selected based on its superior performance characteristics, including high load capacity and low noise, high and uniform hardness and wear resistance, and high elastic limit. This material is widely used in the manufacture of thrust ball bearings due to its ideal mechanical properties to ensure high performance and long life of the bearings.

Stainless steel: When the bearing needs to be rust-proof and corrosion-resistant and non-magnetic, stainless steel thrust ball bearings are an ideal option. The stainless steel materials of thrust ball bearings manufactured by Aubearing include: martensitic stainless steel 440c, austenitic stainless steel 304 and 316. It is worth noting that 304 and 316 stainless steel cannot withstand excessive loads and high speeds.

Ceramic: Ceramic thrust ball bearings have been widely used in aerospace, precision machine tools, high-speed electric spindles and other fields. Silicon nitride, zirconium oxide and silicon carbide ceramic bearings have excellent rolling contact fatigue performance due to their high hardness, high strength and excellent high temperature and corrosion resistance, which improves the reliability and service life of bearings. In addition, ceramic bearings also have a low friction coefficient and excellent lubrication ability, which further improves their operating stability under various extreme conditions. ‌

Precision grade: ABEC-1 to ABEC-9

The factors to consider when selecting ABEC grades include radial and axial clearance, inner hole and outer diameter fit, and noise. The precision grade classification of thrust ball bearings is of great significance for their application in various equipment. The precision grade mainly reflects the manufacturing accuracy and dimensional deviation of the bearing. Generally speaking, the higher the precision grade, the better the dimensional consistency, rotational accuracy and surface quality of the bearing. The product catalog shows the precision grade of thrust ball bearings manufactured by Aubearing, including the dimensional tolerances of the inner diameter and outer diameter. Usually, Aubearing manufactures thrust ball bearings with ABEC1 grade, but the industry can recommend different precision grades according to your application.

Size

Outer diameter size of thrust ball bearings manufactured by Aubearing: 2mm-210mm

Cage: stamped steel cage, solid cage

When the outer diameter of the thrust ball bearing is less than or equal to 250mm, a steel stamped steel cage is generally used; when the outer diameter of the thrust ball bearing is greater than 250mm, a solid cage is generally used.

Lubrication: grease lubrication, oil lubrication

For thrust ball bearings, lubrication is very important. Lubrication can reduce internal friction and wear of the bearing and prevent burning and adhesion. Lubrication can also extend the service life of the thrust ball bearing. Specifically, it can discharge friction heat, accelerate cooling, and prevent overheating of the bearing from causing aging of the lubricating oil. Lubrication can also prevent foreign matter from invading the thrust ball bearing, or prevent rust and corrosion. The lubrication methods of the axial ball thrust ball bearing series include grease lubrication and oil lubrication. In order for the thrust ball bearing to perform well, it is first necessary to select a lubrication method that is suitable for the conditions and purpose of use. Whether it is oil lubrication or grease lubrication, special attention should be paid to the amount of lubrication. Too little lubrication will not fully affect the life of the thrust ball bearing. Too much will produce greater resistance and affect speed.

Temperature

Ordinary chrome steel thrust ball bearings can be used at a constant temperature of 120°C or intermittent temperatures up to 150°C. Above these temperatures, the load capacity of chrome steel will be reduced. Through special heat treatment processes and the addition of high-temperature grease, we can also customize high-temperature resistant thrust ball bearings.

Selection Factors

When selecting thrust ball bearings, factors such as load size, speed, space restrictions, and installation conditions need to be considered to ensure that the bearing can effectively meet the needs of specific applications. The material of thrust ball bearings is usually bearing steel, which is widely used due to its good performance. In addition, according to special requirements, thrust ball bearings can also be made of materials such as carbon steel, stainless steel or ceramics to meet the needs of different working environments.

Typical applications include:

Thrust ball bearing series are widely used in many industries. Typical applications are as follows:

Automobiles Motors Electrical Appliances
Furniture Packaging Machinery Food Chemical Machinery
Fitness Equipment Construction Machinery Medical Instruments
Printing Machinery Machine Tools Flow Meters
Robotics Industry Gas Meters Anemometer
Crane hook Oil rig Rolling mill roll neck