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ML71901HVUJ84S - SNR

ML71901HVUJ84S

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 diameter12 mm
D - External diameter24 mm
B - Bearing/Inner ring width6 mm
d1 - External diameter inner ring15,4 mm
d2 - External diameter inner ring14,5 mm
D1 - Inner diameter outer ring20,05 mm
D2 - Inner diameter outer ring20,75 mm
a - Charge load application point7 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,011 kg
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PRODUCT PERFORMANCE
C - Dynamic load1,41 kN
C0 - Static load0,62 kN
Cu - Fatigue limit load0,07 kN
f0 - Coefficient8.007
Axial displacement K Factor1.21
Preload level8
Preload value0,035 kN
Axial rigidity39 N/µm
Radial rigidity82 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed108000 tr/min
Nlim - Grease lubrication limit speed75000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)6,559 Hz
BPFI - Characteristic inner ring frequency (60 rpm)8,441 Hz
FTF - Characteristic cage frequency (60 rpm)0,437 Hz
BSF - Characteristic rolling element frequency (60 rpm)7,11 Hz
ABUTMENT
da min - Min shoulder diameter IR14,5 mm
db min - Min IR shoulder diameter14,5 mm
Da max - Max shoulder diameter OR21,5 mm
Db max - Max OR shoulder diameter21,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image