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Rolling bearing clearance and rolling bearing material knowledge
by:Waxing
2020-09-14
Effective clearance or work clearance refers to after rolling bearing installed on the host, under certain load, reaches a certain temperature stable operation condition, existing in the rolling bearing of the actual clearance.
Obviously, the effective clearance is smaller than work clearance.
The original clearance refers to the rolling bearing of rolling bearings before installed on the machine, after complete the clearance is under a state of freedom.
So the original clearance inspection clearance is often used as a substitute.
Rolling bearing ring and rolling body usually use high carbon chromium bearing steel.
Most of the bearing, using JIS SUJ2 steel grade.
Use SUJ3 large bearing.
The chemical composition of SUJ2, around the world, as the imported bearing with material has been normalized.
For example: with AISL52100 (
The United States)
DIN100Cr6 (
West Germany)
BS535A99 (
The UK)
All belong to the same steel.
Rolling bearing ring and rolling body, one side again and again under high contact pressure, accompanied by sliding of rolling contact.
Retainer, one side and on either side of the ring and rolling body, or its one side sliding contact, one side under tension and compression force.
Therefore, the bearing ring, rolling element and cage materials, properties, main requirements of imported bearing ring, rolling body materials required by the performance: rolling fatigue strength, high hardness, high resistance to friction consumption.
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