Most customers would like to know the expected rigidity and bearing life before finally choosing TPI bearings. For such circumstances, TPI provides a unique application to evaluate customer' s needs.
1. Temperature Rise Test
Bearing Arrangement：DTBT (<< >>)
Rotating Speed：10000 RPM
Result：TPI bearings had lower temperature rise rather than the other competitors.
Bearing Arrangement：DBT/DB (<>> / <>)
Rotating Speed：5000 RPM
Phenomenon：Noise was found at 4000RPM during running-in test.
Spindle Type：Spindle of honing machine
Bearing Arrangement：DB/DB (<> / <>)
Rotating Speed：6000 RPM
Phenomenon：Temp. rise became over high during running-in test in factory.
- Solid contaminants can be introduced into a bearing via the seals or lubricant.
- Grease isolate the O/R、I/R and ball after uniform distribution in the bearing, but under some circumstance electric potential difference would cumulative, the current force to pass O/R and I/R instantaneous when it reach critical value, cause the spark inside the bearing, make the surface of raceway and rolling elements into molten state, it is electrical pitting.
- A special wear process that occurs at the contact area between raceways and balls under load or impact and in the presence of repeated relative surface motion load, resulting in lubricant failed (as shown below).