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7003UCG/GNP42U3G - NTN

7003UCG/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-SNR is getting under ranges dedicated to requirements of speed, sealing, specific greasing, etc.

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Technical datasheet

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Specs

PRODUCT DEFINITION

d - Internal diameter 17 mm
D - External diameter 35 mm
B - Bearing/Inner ring width 10 mm
d1 - External diameter inner ring 23 mm
d2 - External diameter inner ring 21,6 mm
D1 - Inner diameter outer ring 29 mm
D2 - Inner diameter outer ring 32 mm
a - Charge load application point 8,5 mm
α - Contact angle 15 °
rs - Min fillet radius 0,3 mm
r1s - Min fillet radius 0,15 mm
Precision class P42
Mass 0,037 kg
Brand NTN
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PRODUCT PERFORMANCE

C0 - Static load 4,55 kN
f0 - Coefficient 13.8
Nlim - Oil lubrication limit speed 72100 tr/min
Nlim - Grease lubrication limit speed 45100 tr/min
Preload level GN
Preload value 0,049 kN
Axial rigidity 29 N/µm
Radial rigidity 155,1 N/µm
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C
FTF - Characteristic cage frequency 0,397 Hz
BSF - Characteristic rolling element frequency 4,482 Hz
BPFO - Characteristic outer ring frequency 4,365 Hz
BPFI - Characteristic inner ring frequency 6,635 Hz

ABUTMENT

da min - Min shoulder diameter IR 19,5 mm
Da max - Max shoulder diameter OR 32,5 mm
Db max - Max OR shoulder diameter 33,8 mm
r1a - Max fillet radius 0,15 mm
ra max - Max shaft & housing fillet radius 0,3 mm
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