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There are dozens of cars bearing Thrust ball bearings, large and small, including almost all common types of bearings, thrust ball bearings so hit and damage is also more common. Since two-way thrust ball bearings are generally installed in the house, so the inconvenience visual inspection can only be based fault phenomenon first make rough judgment, and then remove checks.
Thrust ball bearing is to reduce the proper use of bearing failure, a reliable guarantee extend bearing life, which includes the correct installation and reasonable lubrication.
The following were the first volume of two-way thrust ball bearings use requirements and common faults, damage.
A, two-way thrust ball bearings used correctly
1 bearing disassembly
Bearings should be cleaned before installation. Installation, use special tools to auxiliary bearing pressure uniformly straight forward, do not hand hammer percussion, specifically prohibits direct bearing on percussion. When the bearing ring and housing bore with loose, they shall repair or replace the bearing seat hole, do not use to play in the bearing mating surface pitting or pad method of perverting the use of copper. Bearing Demolition should use the appropriate bearing puller will pull, do not use chisels, hammers and other hand percussion bearings.
2 bearing lubrication
Thrust ball bearings are commonly used lubricant oil and grease two kinds. When the shaft is smaller than the circumferential speed of 4-5m / s, or when the car can not use lubricating parts are lubricated with grease. Grease seal structure has the advantage of simple, easy to drain grease, not affected by temperature, plus a grease can be used longer.
Use grease to pay attention to two questions, first, according to automotive specification requirements, choose the appropriate grade of grease. For example, it should not be optional automotive water pump bearing grease Kea, because of poor water resistance. The second is added to the bearing grease to moderate, generally filling the bearing cavity 1/2-l/3 appropriate, too much is not only useless, but also increase the bearing running resistance, making it hotter. Special attention to the automotive wheel bearings, to promote "empty hub lubrication", that is, only on the bearing can be coated with the right amount of grease, otherwise, not only waste and improper cooling, heat will make the grease spills may affect the braking performance.
Lubricating the advantage of friction is small, and can heat, mainly for high-speed and high ambient temperature bearings. Automotive lubricants grades according to requirements of the specification, and connect to the car maintenance cycle promptly replaced, after release of the old oil after washing for institutions coupled with new oil, oil should be added to the marking requirements, or flush with filler (depending on car specific structure, requirements may be), do not pay more.
B, two-way thrust ball bearings common faults
Thrust ball bearing failure phenomenon generally manifests itself in two, high temperature bearing mounting parts, bearings running in noise.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7218A NSK | 90 | 160 | 30 |
| 7018C NSK | 90 | 140 | 24 |