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ML71905CVUJ84S - SNR

ML71905CVUJ84S

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 diameter25 mm
D - External diameter42 mm
B - Bearing/Inner ring width9 mm
d1 - External diameter inner ring30,6 mm
d2 - External diameter inner ring29,4 mm
D1 - Inner diameter outer ring37,65 mm
D2 - Inner diameter outer ring38,95 mm
a - Charge load application point10 mm
α - Contact angle17 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,041 kg
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PRODUCT PERFORMANCE
C - Dynamic load4,25 kN
C0 - Static load2,33 kN
Cu - Fatigue limit load0,13 kN
f0 - Coefficient8.151
Axial displacement K Factor1.58
Preload level8
Preload value0,065 kN
Axial rigidity38 N/µm
Radial rigidity176 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed66000 tr/min
Nlim - Grease lubrication limit speed48000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)8,42 Hz
BPFI - Characteristic inner ring frequency (60 rpm)10,58 Hz
FTF - Characteristic cage frequency (60 rpm)0,443 Hz
BSF - Characteristic rolling element frequency (60 rpm)8,307 Hz
ABUTMENT
da min - Min shoulder diameter IR27,5 mm
db min - Min IR shoulder diameter27,5 mm
Da max - Max shoulder diameter OR39,5 mm
Db max - Max OR shoulder diameter39,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image