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High precision angular contact ball bearings

7002UCG/GNP42 - NTN

7002UCG/GNP42

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 diameter15 mm
D - External diameter32 mm
B - Bearing/Inner ring width9 mm
d1 - External diameter inner ring20,9 mm
d2 - External diameter inner ring19,7 mm
D1 - Inner diameter outer ring26,1 mm
D2 - Inner diameter outer ring28,7 mm
a - Charge load application point7,7 mm
α - Contact angle15 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,15 mm
Precision classP42
Mass0,03 kg
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PRODUCT PERFORMANCE
C - Dynamic load7,35 kN
C0 - Static load3,7 kN
f0 - Coefficient14.1
N lim - Oil lubrication limit speed79800 tr/min
N lim - Grease lubrication limit speed49900 tr/min
Preload levelGN
Preload value0,039 kN
Axial rigidity27,1 N/µm
Radial rigidity144,9 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR17,5 mm
Da max - Max shoulder diameter OR29,5 mm
Db max - Max OR shoulder diameter30,8 mm
r1a - Max fillet radius0,15 mm
ra max - Max shaft & housing fillet radius0,3 mm
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