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71912CVUJ84 - SNR

71912CVUJ84

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 60 mm
External diameter D 85 mm
Bearing/Inner ring width(B) 13 mm
External diameter inner ring d1 68,1 mm
Inner diameter outer ring D1 76,9 mm
Inner diameter outer ring D2 80,19 mm
Charge load application point a 16 mm
Contact angle α 15 °
Min fillet radius rs 1 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 16.514
Precision class P4
Mass 0,195 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load, C 19,1 kN
Static load, C0 18,7 kN
Fatigue limit load, Cu 1 kN
Axial displacement K Factor 1.17
Preload level 8
Preload value 0,3 kN
Axial rigidity 94 N/µm
Radial rigidity 472 N/µm
Min operating temperature, Tmin -30 °C
Max operating temperature, Tmax 120 °C
Nlim (oil) 24000 tr/min
Nlim (grease) 16000 tr/min
Characteristic cage frequency, FTF 0,452 Hz
Characteristic rolling element frequency, BSF 10,056 Hz
Characteristic outer ring frequency, BPF0 10,405 Hz
Characteristic inner ring frequency, BPFI 12,595 Hz

ABUTMENT

Min shoulder diameter IR da min 65,5 mm
Min IR shoulder diameter (db min) 65,5 mm
Max shoulder diameter OR Da max 79,5 mm
Max OR shoulder diameter (Db max) 79,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius ra max 1 mm
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