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ML7009HVUJ74S - SNR

ML7009HVUJ74S

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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Specs

PRODUCT DIMENSIONS

Internal diameter (d) 45 mm
External diameter (D) 75 mm
Bearing/Inner ring width (B) 16 mm
External diameter inner ring d1 54,7 mm
External diameter inner ring (d2) 52,4 mm
Inner diameter outer ring (D1) 66,31 mm
Inner diameter outer ring D2 68,46 mm
Charge load application point a 22 mm
Contact angle α 25 °
Min fillet radius (rs) 1 mm
Min fillet radius r1s 0,6 mm
Coefficient f0 8.344
Precision class P4S
Mass 0,238 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load (C) 10,3 kN
Static load (C0) 6,7 kN
Fatigue limit load (Cu) 0,4 kN
Axial displacement K Factor 0.68
Preload level 7
Preload value 0,09 kN
Axial rigidity 92 N/µm
Radial rigidity 205 N/µm
Min operating temperature (Tmin) -30 °C
Max operating temperature (Tmax) 120 °C
Nlim (oil) 33000 tr/min
Nlim (grease) 23000 tr/min
Characteristic cage frequency, FTF 0,451 Hz
Characteristic rolling element frequency, BSF 9,171 Hz
Characteristic outer ring frequency, BPF0 9,923 Hz
Characteristic inner ring frequency, BPFI 12,077 Hz

ABUTMENT

Min shoulder diameter IR (da min) 50,5 mm
Min IR shoulder diameter (db min) 50,5 mm
Max shoulder diameter OR (Da max) 69,5 mm
Max OR shoulder diameter (Db max) 69,5 mm
Maxi fillet radius r1a 0,6 mm
Max shaft & housing fillet radius (ra max) 1 mm
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