Symptom Rolling of the general performance of two, one bearing installation site temperature is too high, the second is bearing operation is noisy.

1. The bearing temperature

When agencies operate, install the bearing parts to allow a certain temperature, when the stroking mechanism housing should not feel hot to normal, otherwise it indicates that the bearing temperature is too high.

High bearing temperatures reasons: oil quality does not meet the requirements or deterioration, lubricating oil viscosity is too high; institutional assembly too tight (lack of space); bearing assembly too tight; bearing ring is rotated on the shaft or housing; overload big; rolling element bearing cage or fragmentation as well.

2. bearing noise

Rolling allow a slight noise at work, if the noise is too large or unusual noise or crash, then the bearing is faulty.

Rolling noise is more complex reasons, one is the bearing inner and outer rings with surface wear. Because of this wear, damage to relations with the bearing and the housing, the bearing and the shaft, leading axis deviation from the correct position, the shaft generate abnormal sound in the high-speed movement. When the bearing fatigue, its surface metal flake, but also make the bearing radial clearance increases abnormal sound. In addition, lack of bearing lubrication, the formation of dry friction, and bearing broken, etc. will have an unusual sound. Songkuang after bearing wear, loose cage damage, will produce abnormal sound.