Libreng Engineering Tool #053

Bearing Speed Factor n×dm Calculator

Kalkulahin ang n×dm speed factor at ihambing sa mga limitadong halaga para sa grasa at langis na lubrication ayon sa uri ng bearing.

n × dmGrease LimitOil Limit
Quick presets

Results

Speed Factor n × dm
Grease Limit
Oil Limit
Assessment
Mean Diameter dm

Speed Factor Formula

Limiting n×dm Values (typical, ×10³)

Bearing TypeGrease LimitOil Limit
Deep groove ball (DGBB)500,000700,000
Angular contact ball (ACBB)450,000650,000
Cylindrical roller (CRB)350,000550,000
Tapered roller (TRB)250,000400,000
Spherical roller (SRB)200,000350,000
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