How to Measure the Clearance of Dalian Rolling Bearing

The radial clearance shall be checked as follows:

1、 Sensory method

1. Rotate the bearing by hand, and the bearing shall be stable and flexible without jamming.

2. Shake the outer ring of the bearing by hand. Even if the radial clearance is only 0.01 mm, the axial movement of a point on the bearing is 0.10~0.15 mm. This method is specially used for single row radial ball bearings.

2、 Measurement method

1. Check with a feeler gauge to confirm the part with large load of the rolling bearing. Insert a feeler gauge between the 180 ° rolling body and the outer (inner) ring. The thickness of the feeler gauge with appropriate tightness is the radial clearance of the bearing. This method is widely used in self-aligning bearings and cylindrical roller bearings.

2. Check with a dial indicator. Adjust the dial indicator to zero first, and then jack up the outer ring of the rolling bearing. The reading of the dial indicator is the radial clearance of the bearing.

The inspection method of axial clearance is as follows:

1. Sensory method

Check the axial clearance of rolling bearing with fingers. This method is applied to the situation where the shaft end is exposed. When the shaft end is closed or cannot be checked with fingers due to other reasons, check whether the shaft can rotate flexibly.

2. Measurement method

(1) Use a feeler gauge to check the radial clearance in the same way as the feeler gauge, but the axial clearance should be

c= λ/ (2sin β)

Where, c - axial clearance, mm;

λ—— Thickness of feeler gauge, mm;

β—— Bearing cone angle, (°).

(2) Check with a dial indicator. When the shaft is shifted at both ends with a crowbar, the difference between the readings of the dial indicator is the axial clearance of the bearing. However, the force applied to the crowbar shall not be too large, otherwise the shell will undergo elastic deformation, even if the deformation is small, it will affect the accuracy of the measured axial clearance.