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71910HVUJ84 - SNR

71910HVUJ84

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) 50 mm
External diameter (D) 72 mm
Bearing/Inner ring width (B) 12 mm
External diameter inner ring d1 56,8 mm
Inner diameter outer ring (D1) 65,2 mm
Inner diameter outer ring D2 68,02 mm
Charge load application point a 20 mm
Contact angle α 25 °
Min fillet radius (rs) 0,6 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 16.534
Precision class P4
Mass 0,129 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load (C) 14 kN
Static load (C0) 12,7 kN
Fatigue limit load (Cu) 0,72 kN
Axial displacement K Factor 0.6
Preload level 8
Preload value 370000 kN
Axial rigidity 179 N/µm
Radial rigidity 355 N/µm
Min operating temperature (Tmin) -30 °C
Max operating temperature (Tmax) 120 °C
Nlim (oil) 26000 tr/min
Nlim (grease) 17000 tr/min
Characteristic cage frequency, FTF 0,453 Hz
Characteristic rolling element frequency, BSF 9,521 Hz
Characteristic outer ring frequency, BPF0 9,509 Hz
Characteristic inner ring frequency, BPFI 11,491 Hz

ABUTMENT

Min shoulder diameter IR (da min) 54,5 mm
Min IR shoulder diameter (db min) 54,5 mm
Max shoulder diameter OR (Da max) 67,5 mm
Max OR shoulder diameter (Db max) 67,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius (ra max) 0,6 mm
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