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ML71910HVUJ84S - SNR

ML71910HVUJ84S

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 diameter50 mm
D - External diameter72 mm
B - Bearing/Inner ring width12 mm
d1 - External diameter inner ring56,8 mm
d2 - External diameter inner ring54,7 mm
D1 - Inner diameter outer ring66,01 mm
D2 - Inner diameter outer ring67,51 mm
a - Charge load application point20 mm
α - Contact angle25 °
rs - Min fillet radius0,6 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,129 kg
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PRODUCT PERFORMANCE
C - Dynamic load7,1 kN
C0 - Static load5,3 kN
Cu - Fatigue limit load0,34 kN
f0 - Coefficient8.658
Axial displacement K Factor0.61
Preload level8
Preload value0,18 kN
Axial rigidity132 N/µm
Radial rigidity286 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed32000 tr/min
Nlim - Grease lubrication limit speed22000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)13,916 Hz
BPFI - Characteristic inner ring frequency (60 rpm)16,084 Hz
FTF - Characteristic cage frequency (60 rpm)0,464 Hz
BSF - Characteristic rolling element frequency (60 rpm)12,471 Hz
ABUTMENT
da min - Min shoulder diameter IR54,5 mm
db min - Min IR shoulder diameter54,5 mm
Da max - Max shoulder diameter OR67,5 mm
Db max - Max OR shoulder diameter67,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,6 mm
Product classification image
Calcul factors image