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7000UCG/GNP42 - NTN

7000UCG/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-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 10 mm
D - External diameter 26 mm
B - Bearing/Inner ring width 8 mm
d1 - External diameter inner ring 15,2 mm
d2 - External diameter inner ring 14 mm
D1 - Inner diameter outer ring 20,4 mm
D2 - Inner diameter outer ring 22,9 mm
a - Charge load application point 6,4 mm
α - Contact angle 15 °
rs - Min fillet radius 0,3 mm
r1s - Min fillet radius 0,15 mm
Precision class P42
Mass 0,019 kg
Brand NTN
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PRODUCT PERFORMANCE

C0 - Static load 2,48 kN
f0 - Coefficient 12.6
Nlim - Oil lubrication limit speed 105300 tr/min
Nlim - Grease lubrication limit speed 65800 tr/min
Preload level GN
Preload value 0,029 kN
Axial rigidity 20,3 N/µm
Radial rigidity 108,5 N/µm
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C
FTF - Characteristic cage frequency 0,371 Hz
BSF - Characteristic rolling element frequency 3,49 Hz
BPFO - Characteristic outer ring frequency 3,338 Hz
BPFI - Characteristic inner ring frequency 5,662 Hz

ABUTMENT

da min - Min shoulder diameter IR 12,5 mm
Da max - Max shoulder diameter OR 23,5 mm
Db max - Max OR shoulder diameter 24,8 mm
r1a - Max fillet radius 0,15 mm
ra max - Max shaft & housing fillet radius 0,3 mm
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