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7203HG1UJ74 - SNR

7203HG1UJ74

High precision angular contact ball bearing, laminated resin cage centred on outer ring

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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Specs

PRODUCT DIMENSIONS

Internal diameter d 17 mm
External diameter D 40 mm
Bearing/Inner ring width(B) 12 mm
External diameter inner ring d1 24,1 mm
Inner diameter outer ring D1 32,95 mm
Inner diameter outer ring D2 35,98 mm
Charge load application point a 13 mm
Contact angle α 25 °
Min fillet radius rs 0,6 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 13.221
Precision class P4
Mass 0,065 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load, C 10,9 kN
Static load, C0 6 kN
Fatigue limit load, Cu 0,35 kN
Axial displacement K Factor 0.94
Preload level 7
Preload value 0,09 kN
Axial rigidity 68 N/µm
Radial rigidity 145 N/µm
Min operating temperature, Tmin -30 °C
Max operating temperature, Tmax 120 °C
Nlim (oil) 51000 tr/min
Nlim (grease) 33000 tr/min
Characteristic cage frequency, FTF 0,393 Hz
Characteristic rolling element frequency, BSF 4,03 Hz
Characteristic outer ring frequency, BPF0 4,32 Hz
Characteristic inner ring frequency, BPFI 6,68 Hz

ABUTMENT

Min shoulder diameter IR da min 21,5 mm
Min IR shoulder diameter (db min) 21,5 mm
Max shoulder diameter OR Da max 35,5 mm
Max OR shoulder diameter (Db max) 35,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius ra max 0,6 mm
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