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High precision angular contact ball bearings

7900UADG/GLP42U3G - NTN

7900UADG/GLP42U3G

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 diameter10 mm
D - External diameter22 mm
B - Bearing/Inner ring width6 mm
d1 - External diameter inner ring14,3 mm
d2 - External diameter inner ring13,5 mm
D1 - Inner diameter outer ring17,7 mm
D2 - Inner diameter outer ring19,4 mm
a - Charge load application point6,8 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,15 mm
Precision classP42
Mass0,01 kg
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PRODUCT PERFORMANCE
C - Dynamic load3,4 kN
C0 - Static load1,58 kN
f0 - Coefficient14.5
N lim - Oil lubrication limit speed102500 tr/min
N lim - Grease lubrication limit speed63400 tr/min
Preload levelGL
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR12,5 mm
Da max - Max shoulder diameter OR19,5 mm
Db max - Max OR shoulder diameter20,8 mm
r1a - Max fillet radius0,15 mm
ra max - Max shaft & housing fillet radius0,3 mm
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