This Bearing Structure

Standard Type: A ball bearing is composed of an outer and inner ring, balls, seal and a retainer.

This Bearing Cover

Compared to the open type, the shielded and sealed bearing types provide better protection from contamination and grease leakage.
They are selected based on the application type and environment.

This is 2RS double rubber sealed.

This Bearing Lubrication

One of the most important elements required for the effective function of bearing arrangements is correct lubrication.

The lubricant separates the metallic bearing surfaces and thereby reduces friction, preserves the steel parts and acts as an additional barrier against the entry of contaminations or impurities into the bearings.

This Bearing Cage

Retainers keep the balls separated and equally spaced.
Retainer types are set based on the bearing size but can be selected based on the required performance.

This is made of steel ribbon.

This Bearing Material

The most common material used to produce the load carrying components in roller bearings is 52100 chrome steel (bearing steel).

The typical surface hardness for bearing components made from this material ranges from 60- 64 on the Rockwell hardness C scale (Rc).

This Bearing Balls

Due to this usually very small contacting area ball bearings have less frictional resistance and are more suitable in high speed applications.

This is made of steel.

This Bearing Clearance

The term “clearance” is briefly described as the distance that bearing components may move relative to each other at physical extremes.

CN (C0) “normal” clearance
This clearance group is defined as the standard.
Thus CN is not marked on the bearings. Historically the standard clearance was designated as “C0“.

C2 clearance range smaller than CN
C3 clearance range larger than CN

This Bearing Grade

Executive standard:
GB/T 307.1-2005
Rolling bearings Radial bearings Tolerance

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