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High precision angular contact ball bearings

7922UCG/GNP42U3G - NTN

7922UCG/GNP42U3G

High precision angular contact ball bearing, moulded polyamide cage centred on balls

In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter110 mm
D - External diameter150 mm
B - Bearing/Inner ring width20 mm
d1 - External diameter inner ring123,6 mm
d2 - External diameter inner ring120,5 mm
D1 - Inner diameter outer ring136,4 mm
D2 - Inner diameter outer ring142,7 mm
a - Charge load application point27,5 mm
α - Contact angle15 °
rs - Min fillet radius1,1 mm
r1s - Min fillet radius0,6 mm
Precision classP42
Mass0,87 kg
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PRODUCT PERFORMANCE
C - Dynamic load62 kN
C0 - Static load65,5 kN
f0 - Coefficient16.5
N lim - Oil lubrication limit speed14400 tr/min
N lim - Grease lubrication limit speed9000 tr/min
Preload levelGN
Preload value0,335 kN
Axial rigidity124,9 N/µm
Radial rigidity720 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR117 mm
Da max - Max shoulder diameter OR143 mm
Db max - Max OR shoulder diameter145,5 mm
r1a - Max fillet radius0,6 mm
ra max - Max shaft & housing fillet radius1 mm
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