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ML71902HVUJ84S - SNR

ML71902HVUJ84S

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 diameter15 mm
D - External diameter28 mm
B - Bearing/Inner ring width7 mm
d1 - External diameter inner ring18,7 mm
d2 - External diameter inner ring17,75 mm
D1 - Inner diameter outer ring24,35 mm
D2 - Inner diameter outer ring24,95 mm
a - Charge load application point8 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,015 kg
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PRODUCT PERFORMANCE
C - Dynamic load1,92 kN
C0 - Static load0,89 kN
Cu - Fatigue limit load0,07 kN
f0 - Coefficient7.995
Axial displacement K Factor1.11
Preload level8
Preload value0,05 kN
Axial rigidity48 N/µm
Radial rigidity102 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed91000 tr/min
Nlim - Grease lubrication limit speed63000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)7,041 Hz
BPFI - Characteristic inner ring frequency (60 rpm)8,959 Hz
FTF - Characteristic cage frequency (60 rpm)0,44 Hz
BSF - Characteristic rolling element frequency (60 rpm)7,451 Hz
ABUTMENT
da min - Min shoulder diameter IR17,5 mm
db min - Min IR shoulder diameter17,5 mm
Da max - Max shoulder diameter OR25,5 mm
Db max - Max OR shoulder diameter25,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image