Back

7004UCG/GNP42U3G - NTN

7004UCG/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.

Downloads

3D file

Technical datasheet

PLEASE LOGIN to add products to your basket
Contact us
Specs

PRODUCT DEFINITION

d - Internal diameter 20 mm
D - External diameter 42 mm
B - Bearing/Inner ring width 12 mm
d1 - External diameter inner ring 28,1 mm
d2 - External diameter inner ring 26,4 mm
D1 - Inner diameter outer ring 34,9 mm
D2 - Inner diameter outer ring 38,4 mm
a - Charge load application point 10,3 mm
α - Contact angle 15 °
rs - Min fillet radius 0,6 mm
r1s - Min fillet radius 0,3 mm
Precision class P42
Mass 0,067 kg
Brand NTN
Product classification image

PRODUCT PERFORMANCE

C0 - Static load 6,6 kN
f0 - Coefficient 14.1
Nlim - Oil lubrication limit speed 59500 tr/min
Nlim - Grease lubrication limit speed 37200 tr/min
Preload level GN
Preload value 0,069 kN
Axial rigidity 35,9 N/µm
Radial rigidity 192,2 N/µm
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C
FTF - Characteristic cage frequency 0,403 Hz
BSF - Characteristic rolling element frequency 4,774 Hz
BPFO - Characteristic outer ring frequency 4,832 Hz
BPFI - Characteristic inner ring frequency 7,168 Hz

ABUTMENT

da min - Min shoulder diameter IR 24,5 mm
Da max - Max shoulder diameter OR 37,5 mm
Db max - Max OR shoulder diameter 39,5 mm
r1a - Max fillet radius 0,3 mm
ra max - Max shaft & housing fillet radius 0,6 mm
Product classification image
Calcul factors image