one of the reasons
Bearing lack of oil or grease, oil deterioration or dry grease, too much oil or too much grease
1. Inspection method
(1) Observe the oil level from the bearing frame or bearing body
(2) Check whether the oil has deteriorated
(2) Disassemble the bearing gland to check the amount of grease and the quality of grease
2. State Characteristics
(1) The oil is lower than the oil level requirement
(2) Oil deterioration
(3) Excessive grease
(4) The oil is dry or deteriorated
3. Treatment method
(1) Replenish oil to the oil level requirement
(2) Change oil or grease
(3) Open the bearing gland and take out part of the grease, so that there is 1/2 to 2/3 grease in the bearing
Reason two:
Bearing is rusty or has iron filings and dirt
1. Inspection method
(1) Check the bearing removal
(2) Use a special measuring rod or screwdriver to listen to the running sound of the bearing at the bearing position
2. State characteristics
(1) There is rust or iron filings in the bearing roller or raceway
(2) The bearing is noisy and generates heat during operation
3. Treatment method
(1) Clean the bearing
(2) Replace with new bearings
Reason three:
The outer circle of the roller or the inner ring of the roller or the outer circle of the outer ring, the hardness is low
1. Inspection method
(1) Observe the movement traces of the rollers, rollers and inner and outer surfaces of the inner and outer rings of the bearing;
(2) The hardness of the bearing tested by the hardness tester is less than RC60.
2. State characteristics
(1) There are fish-scale patterns on the inner and outer surfaces of the roller or roller, inner ring, and outer ring;
(2) The hardness measured by a hardness tester is less than RC60;
(3) The sound of the bearing heats up
3. Treatment method: replace the bearing
Reason four:
Bearing accuracy is low, unqualified
1. Inspection method:
Wash the bearing, put your finger in the hole, use the other hand to rotate the outer ring of the bearing, or send it to the bearing inspection machine for testing.
2. State characteristics:
(1) Rotating the outer ring by hand, a rustling sound is made, and the fingers feel uneven;
(2) Bearing noise and heat generation
3. Treatment method: replace with new bearings
