Inspection and testing

Bearing clearance and residual magnetic detection

Product Description

Bearing clearance refers to the internal clearance of bearing products after assembly, and its numerical value should be able to match the various use requirements on the host (various parts), which is one of the main quality indicators of bearings. The bearing manufacturer provides different sizes of options according to the different requirements of the user (there is a special mark on the outer packaging of the bearing). Unqualified or wrong selection of bearing clearance will directly lead to the operation of the host failure or seriously affect the service life.

Bearing clearance in international standards (ISO) and national standards (GB,DIN,ANSI,JIS,Г OCT, etc.) have clear requirements, inspection can be based on the relevant standards for qualification evaluation.

Bearing residual magnetism refers to the residual magnetic induction intensity on the bearing when the bearing is in the finished state (the bearing has a magnetizing and demagnetizing process during production and processing), which is one of the important quality indicators of the bearing. The large residual magnetic field of the bearing has a great impact on the service life of the bearing. Not only is it not easy to clean the metal chips remaining on the parts during processing when the bearing finished product leaves the factory, but it is also easy to remove the metal wear around the bearing end of the host when in use. The debris is sucked into the bearing raceway, thereby accelerating the wear of the bearing and causing the bearing to be damaged in advance. The residual magnetic index of the bearing is clearly required in the relevant national standards, and the inspection can be evaluated according to the standards.