Precision Bearings Application Case Study (1)
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.
2. Investigation and Research
Directly operated the spindle at 6000RPM after bearing replacement
7008C side temp. rise went up to 18℃, as shown in fig. 1.
Fig. 1 7008C side temp. rise
Increase the rotating speed by stages till 6000RPM
7008C side temp. rise was lowered to 4℃, as shown in fig 2.
Fig. 2 7008C side temp. rise
Operating spindles with newly replaced bearings may encounter abnormal temp. rise
phenomenon. Increasing the rotating speed by stages can spread out the grease within
bearing and increase bearing life.