We can provide free samples . Please contact Email for any inquiries

In order to determine whether removing balero Heller 5310 bearings can be used to check the bearings cleaned, carefully check the raceway surface, rolling surface, with the increase of the state, maintain the thrust wear, frame of angular contact ball bearing clearance with or without a loss of abnormal wound, drop size precision. Non separation of small ball bearings, inner ring with one hand supporting level, to confirm whether the smooth rotating ring.
Tapered roller bearings and other release bearing, can check on the raceway surface rolling body, the outer ring. The large-scale import bearings because they cannot rotate, pay attention to check the rolling body raceway, cage, retaining boundary surface appearance, importance of angular contact thrust ball bearings shall carefully check the higher.

Phenomenon:
1) the engine idling no sound, and the high speed a "giggle" sound (issued by the crankcase)
2) emergency refueling loosen accelerator instantaneous sound more obvious.
3) temperature has no obvious change. When the load increases, the sound increases.
4) sound more angular contact thrust ball bearing sound slow, short.
Reason.
1) bearing and shaft neck wear too much, the radial clearance is too large.
2) bearing cap bolt loosening.
3) bearing alloy ablation or fall off.
4) axis neck circle loss.
5) bearing and the bearing seat relative rotation.
Diagnosis.
1) the engine speed when excessive idle speed to medium speed sound clear, with high speed, the noise is more prominent, as the balero Heller 5310 bearing ring.
2) on a cylinder cutoff test, noise reduced or disappeared, as the cylinder bearing rings.
3) irrespective of speed and temperature are sound, and the engine vibration, cutoff test sound does not change, is the erosion of balero Heller 5310 bearing alloy.