Different features of special bearings and plain bearing vibration
Most favorable price : sales@hellerbearings.com
Special bearings vibration:
A. roller diameter, the length of the scroll.
B. cage by the outer rim guide roller, reduce the forces for roller.
C. the inner ring guard guide roller, improve roller run.
D. cylindrical roller bearing cage, the integral structure strength greatly increased.
E. self-aligning bearing outside diameter design with sump oil holes, lubrication effect is good.
Normal bearing:
A. roller diameter and length of the scroll are small.
B. cage guide roller or inner circle.
C. cylindrical roller bearing cage structure of rivets, easy to loose and fall guy.
D. self-aligning bearing outside diameter without sump oil hole, the lubrication effect is poor.
2. Choose the material
Special bearings vibration:
A. inside and outside the ring and rolling body adopts vacuum degassed bearing steel, fatigue resistance performance is good.
B. keep frame adopts aluminum iron manganese bronze material, high strength, good elasticity, wear-resisting performance is better.
Normal bearing:
A. inside and outside the circle and using the ordinary bearing steel roller.
B. keep using zinc brass material, low strength, poor elasticity.
3. Heat treatment
Special bearings vibration:
A. inside and outside the circle of the bay - horse mixed hardening or martensite high temperature quenching + tempering, uniform hardness, small internal stress; Good toughness and resistance to impact and vibration.
B. work within 150 c temperature, good stability.
Normal bearing:
Inside and outside the circle using common quenching way, poor toughness, impact and vibration resistance is poor, thermal stability is not good.
4. Tolerance and manufacturing process
Special bearings vibration:
A. strictly according to standard grade P6 accuracy, especially within the diameter tolerance degree is small.
B. the rolling body size difference of 0.002 or less to each other
C. cylindrical roller diameter has a crown, avoid stress concentration.
D. rolling surface ultra precision processing, high degree of finish.
Normal bearing:
A. PO common grade precision tolerance grade (partial P6 standard) manufacturing.
B. roller group 0.005 or less.
C. cylindrical roller crown practice.
D. part of the race for polishing processing, only finish low.
5. Internal clearance
Special bearings vibration:
Clearance according to the requirements of vibration machinery production, the scope of control in a small range, good consistency.
Normal bearing:
Clearance generally according to the standard or C3 group production, clearance or small, or large range, large discreteness.
6. Use effect
Special bearings vibration:
Low noise, small temperature, good stability, long service life, no early fatigue phenomenon.
Normal bearing:
Big noise, high temperature, stability is bad, life is short, there are early fatigue phenomenon.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
We can provide free samples . Please contact Email for any inquiries
1. Design structureSpecial bearings vibration:
A. roller diameter, the length of the scroll.
B. cage by the outer rim guide roller, reduce the forces for roller.
C. the inner ring guard guide roller, improve roller run.
D. cylindrical roller bearing cage, the integral structure strength greatly increased.
E. self-aligning bearing outside diameter design with sump oil holes, lubrication effect is good.
Normal bearing:
A. roller diameter and length of the scroll are small.
B. cage guide roller or inner circle.
C. cylindrical roller bearing cage structure of rivets, easy to loose and fall guy.
D. self-aligning bearing outside diameter without sump oil hole, the lubrication effect is poor.
2. Choose the material
Special bearings vibration:
A. inside and outside the ring and rolling body adopts vacuum degassed bearing steel, fatigue resistance performance is good.
B. keep frame adopts aluminum iron manganese bronze material, high strength, good elasticity, wear-resisting performance is better.
Normal bearing:
A. inside and outside the circle and using the ordinary bearing steel roller.
B. keep using zinc brass material, low strength, poor elasticity.
3. Heat treatment
Special bearings vibration:
A. inside and outside the circle of the bay - horse mixed hardening or martensite high temperature quenching + tempering, uniform hardness, small internal stress; Good toughness and resistance to impact and vibration.
B. work within 150 c temperature, good stability.
Normal bearing:
Inside and outside the circle using common quenching way, poor toughness, impact and vibration resistance is poor, thermal stability is not good.
4. Tolerance and manufacturing process
Special bearings vibration:
A. strictly according to standard grade P6 accuracy, especially within the diameter tolerance degree is small.
B. the rolling body size difference of 0.002 or less to each other
C. cylindrical roller diameter has a crown, avoid stress concentration.
D. rolling surface ultra precision processing, high degree of finish.
Normal bearing:
A. PO common grade precision tolerance grade (partial P6 standard) manufacturing.
B. roller group 0.005 or less.
C. cylindrical roller crown practice.
D. part of the race for polishing processing, only finish low.
5. Internal clearance
Special bearings vibration:
Clearance according to the requirements of vibration machinery production, the scope of control in a small range, good consistency.
Normal bearing:
Clearance generally according to the standard or C3 group production, clearance or small, or large range, large discreteness.
6. Use effect
Special bearings vibration:
Low noise, small temperature, good stability, long service life, no early fatigue phenomenon.
Normal bearing:
Big noise, high temperature, stability is bad, life is short, there are early fatigue phenomenon.
