1 Appearance Features
Vibration special bearing:
A. rolling element diameter increased the rolling body length increase.
B. holder guide roller by the outer ring wall, and reduce the biasing force of the roller.
C. inner ring rib guide roller to improve roller operation.
D. cylindrical roller bearing cage overall structure, greatly improving strength.
E. tone heart bearing outside diameter design a sump hole, lubricating effect.
Plain bearing:
A. roller body diameter and rolling body length.
B. maintain the rack roller or inner guidance.
C. cylindrical roller bearing cage rivet structure, easy to loose off the cover.
D.-aligning bearing outside diameter sump hole, poor lubrication.
Selection of materials
Vibration special bearing:
A. inside and outside the ring and rolling element bearing steel, vacuum degassing good fatigue resistance.
B. cage aluminum iron and manganese bronze material, high strength, good elasticity, abrasion resistance better.
Plain bearing:
A. inner and outer rings and rolling plain bearing steel.
B. cage zinc brass material, low strength, poor flexibility.
3 heat treatment
Vibration special bearing:
A. inside and outside the ring Pui - Ma mixed quenching Markov quenching + tempering, uniform hardness, internal stress; toughness, and resistance to shock and vibration.
B. work less than 150C temperature stability.
Plain bearing plain bearing:
Inside and outside the ring ordinary quenching, poor toughness, shock and vibration performance, good thermal stability.
Tolerances and manufacturing process.
Vibration special bearing:
A. strictly in accordance with the P6 class accuracy standard manufacturing, especially in the inner and outer diameter tolerances very small.
B. rolling body size mutual difference ≤ 0.002
C. Cylindrical roller diameter convexity practice to avoid stress concentration.
D. rolling surface processing of ultra-fine, smooth finish.
Plain bearing:
A. Ordinary the PO level precision tolerances (part of the P6-class standard) manufacturing.
B. rolling body packet ≤ 0.005.
C. Cylindrical roller convexity practice.
D. part only for the raceway polished finish low.
5 internal clearance
Vibration special bearing:
The clearance requirements vibration mechanical, scope of control in a very small range of good consistency.
Plain bearing:
Clearance is generally based on the standard group or C3 group production, clearance, or small or large range of discrete large.
6. Use effects
Vibration special bearing:
Low noise, small temperature rise, good stability, long service life, early fatigue.
Plain bearing:
Noise, temperature rise, poor stability and short life, early fatigue.
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