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How to Choose Bearing Clearance CN C3 C4 for Heavy Duty Application

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Bearing clearance directly affects running noise, temperature rise and service life.

CN clearance is standard clearance, suitable for normal temperature and general load equipment. 

C3 clearance is larger than standard, commonly used for high-speed, high-temperature and heavy-load equipment to prevent bearing clamping caused by thermal expansion.

C4 extra large clearance is applied in severe working conditions with heavy impact load and high temperature rise.

Reasonable clearance selection avoids overheating, jamming and premature wear of industrial bearings.

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