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ML71906CVUJ74S - SNR

ML71906CVUJ74S

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 diameter30 mm
D - External diameter47 mm
B - Bearing/Inner ring width9 mm
d1 - External diameter inner ring35,1 mm
d2 - External diameter inner ring33,9 mm
D1 - Inner diameter outer ring42,15 mm
D2 - Inner diameter outer ring43,45 mm
a - Charge load application point10 mm
α - Contact angle17 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,047 kg
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PRODUCT PERFORMANCE
C - Dynamic load4,6 kN
C0 - Static load2,75 kN
Cu - Fatigue limit load0,15 kN
f0 - Coefficient8.316
Axial displacement K Factor1.44
Preload level7
Preload value0,023 kN
Axial rigidity28 N/µm
Radial rigidity139 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed57000 tr/min
Nlim - Grease lubrication limit speed42000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)9,898 Hz
BPFI - Characteristic inner ring frequency (60 rpm)12,102 Hz
FTF - Characteristic cage frequency (60 rpm)0,45 Hz
BSF - Characteristic rolling element frequency (60 rpm)9,453 Hz
ABUTMENT
da min - Min shoulder diameter IR32,5 mm
db min - Min IR shoulder diameter32,5 mm
Da max - Max shoulder diameter OR44,5 mm
Db max - Max OR shoulder diameter44,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image