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Home >  Products > Precision Angular Contact Ball Bearing > Ultra-High Speed Angular Contact Bearings With Sealing B719 Series
Ultra-High Speed Angular Contact Bearings With Sealing B719 Series
Precision Angular Contact Ball Bearing
It is mainly used for high speed and high precision grinding for internal surface. In order to meet the requirement of electric spindle, the internal parameters of the bearing rings are optimized. CHG B719 series bearing can use ceramic balls for higher speed and longer life.
Details Specifications Comments

Ultra-High Speed Angular Contact Bearings With Sealing B719 Series 

It is mainly used for high speed and high precision grinding for internal surface. In order to meet the requirement of electric spindle, the internal parameters of the bearing rings are optimized. 


CHG provides B719 series bearing as follows:

1. Contact angle of 15°

2. Outer ring guide phenolic resin cage 

3. Rolling element guide polyamide resin cage ( Tnl ) 

4. Steel ball or ceramic ball ( HQ1 ) 

5. Precision degree: P4, P2 

6. Preload with fixed pressure

7. Contact sealing ( 2RZ ) at both end faces 

8. Can use ceramic balls for higher speed and longer life


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Bearing
Type
Size
(mm)
Basic
Load
Rating
(kN)
Steel
Balls
Limit
Speed
(r/min)
Ceramic
Balls
Limit
Speed
(r/min)
Weight
(kg)
dDBr
(min)
r1
(min)
CaCoaGrease LubricationSteel
Balls
Ceramic
Balls
B71900C-2RZ102260.30.102.11.0750001375000.0090.008
B71901C-2RZ122460.30.102.31.1670001200000.0100.009
B71902C-2RZ152870.30.103.41.7560001000000.0150.013
B71903C-2RZ173070.30.103.61.951000930000.0170.015
B71904C-2RZ203790.30.155.23.042000770000.0350.031
B71905C-2RZ254290.30.155.63.436000660000.0460.039
B71906C-2RZ304790.30.156.03.932000570000.0570.048
B71907C-2RZ3555100.60.156.96.027000480000.0740.065
B71908C-2RZ4062120.60.157.36.823000430000.1230.096
B71909C-2RZ4568120.60.1510.09.321000390000.1330.112
B71910C-2RZ5072120.60.1513.010.120000360000.1390.116