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ML71908CVUJ74S - SNR

ML71908CVUJ74S

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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PRODUCT DEFINITION
BrandSNR
d - Internal diameter40 mm
D - External diameter62 mm
B - Bearing/Inner ring width12 mm
d1 - External diameter inner ring46,8 mm
d2 - External diameter inner ring44,7 mm
D1 - Inner diameter outer ring55,91 mm
D2 - Inner diameter outer ring57,41 mm
a - Charge load application point14 mm
α - Contact angle17 °
rs - Min fillet radius0,6 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,109 kg
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PRODUCT PERFORMANCE
C - Dynamic load6,9 kN
C0 - Static load4,55 kN
Cu - Fatigue limit load0,29 kN
f0 - Coefficient8.42
Axial displacement K Factor1.24
Preload level7
Preload value0,035 kN
Axial rigidity37 N/µm
Radial rigidity186 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed43000 tr/min
Nlim - Grease lubrication limit speed31000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)11,355 Hz
BPFI - Characteristic inner ring frequency (60 rpm)13,645 Hz
FTF - Characteristic cage frequency (60 rpm)0,454 Hz
BSF - Characteristic rolling element frequency (60 rpm)10,349 Hz
ABUTMENT
da min - Min shoulder diameter IR44,5 mm
db min - Min IR shoulder diameter44,5 mm
Da max - Max shoulder diameter OR57,5 mm
Db max - Max OR shoulder diameter57,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,6 mm
Product classification image
Calcul factors image