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ML71904CVUJ84S - SNR

ML71904CVUJ84S

High precision angular contact ball bearing, high speed series ML, 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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Technical datasheet

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Specs

PRODUCT DIMENSIONS

Internal diameter (d) 20 mm
External diameter (D) 37 mm
Bearing/Inner ring width (B) 9 mm
External diameter inner ring d1 25,1 mm
External diameter inner ring (d2) 23,9 mm
Inner diameter outer ring (D1) 32,15 mm
Inner diameter outer ring D2 33,45 mm
Charge load application point a 9 mm
Contact angle α 17 °
Min fillet radius (rs) 0,3 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 7.879
Precision class P4S
Mass 0,036 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load (C) 3,85 kN
Static load (C0) 1,9 kN
Fatigue limit load (Cu) 0,11 kN
Axial displacement K Factor 1.77
Preload level 8
Preload value 60000 kN
Axial rigidity 33 N/µm
Radial rigidity 153 N/µm
Min operating temperature (Tmin) -30 °C
Max operating temperature (Tmax) 120 °C
Nlim (oil) 77000 tr/min
Nlim (grease) 56000 tr/min
Characteristic cage frequency, FTF 0,432 Hz
Characteristic rolling element frequency, BSF 6,899 Hz
Characteristic outer ring frequency, BPF0 6,912 Hz
Characteristic inner ring frequency, BPFI 9,088 Hz

ABUTMENT

Min shoulder diameter IR (da min) 22,5 mm
Min IR shoulder diameter (db min) 22,5 mm
Max shoulder diameter OR (Da max) 34,5 mm
Max OR shoulder diameter (Db max) 34,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius (ra max) 0,3 mm
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