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High precision angular contact ball bearings

7919UCG/GNP42U3G - NTN

7919UCG/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 diameter95 mm
D - External diameter130 mm
B - Bearing/Inner ring width18 mm
d1 - External diameter inner ring106,9 mm
d2 - External diameter inner ring104,3 mm
D1 - Inner diameter outer ring118,1 mm
D2 - Inner diameter outer ring123,5 mm
a - Charge load application point24,1 mm
α - Contact angle15 °
rs - Min fillet radius1,1 mm
r1s - Min fillet radius0,6 mm
Precision classP42
Mass0,59 kg
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PRODUCT PERFORMANCE
C - Dynamic load47 kN
C0 - Static load47,5 kN
f0 - Coefficient16.5
N lim - Oil lubrication limit speed16700 tr/min
N lim - Grease lubrication limit speed10400 tr/min
Preload levelGN
Preload value0,255 kN
Axial rigidity107 N/µm
Radial rigidity615 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR102 mm
Da max - Max shoulder diameter OR123 mm
Db max - Max OR shoulder diameter125,5 mm
r1a - Max fillet radius0,6 mm
ra max - Max shaft & housing fillet radius1 mm
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