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ML71907HVUJ74S - SNR

ML71907HVUJ74S

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 diameter35 mm
D - External diameter55 mm
B - Bearing/Inner ring width10 mm
d1 - External diameter inner ring41,4 mm
d2 - External diameter inner ring40,2 mm
D1 - Inner diameter outer ring48,75 mm
D2 - Inner diameter outer ring50,05 mm
a - Charge load application point15 mm
α - Contact angle25 °
rs - Min fillet radius0,6 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,075 kg
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PRODUCT PERFORMANCE
C - Dynamic load4,8 kN
C0 - Static load3,15 kN
Cu - Fatigue limit load0,18 kN
f0 - Coefficient8.547
Axial displacement K Factor0.71
Preload level7
Preload value0,04 kN
Axial rigidity67 N/µm
Radial rigidity150 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed43000 tr/min
Nlim - Grease lubrication limit speed30000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)11,944 Hz
BPFI - Characteristic inner ring frequency (60 rpm)14,056 Hz
FTF - Characteristic cage frequency (60 rpm)0,459 Hz
BSF - Characteristic rolling element frequency (60 rpm)11,088 Hz
ABUTMENT
da min - Min shoulder diameter IR39,5 mm
db min - Min IR shoulder diameter39,5 mm
Da max - Max shoulder diameter OR50,5 mm
Db max - Max OR shoulder diameter50,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,6 mm
Product classification image
Calcul factors image