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High precision angular contact ball bearings

MLECH7007CVDUJ74S - SNR

MLECH7007CVDUJ74S

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 is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter35 mm
D - External diameter62 mm
B - Bearing/Inner ring width14 mm
d1 - External diameter inner ring43,2 mm
d2 - External diameter inner ring40,9 mm
D1 - Inner diameter outer ring54,31 mm
D2 - Inner diameter outer ring56,71 mm
a - Charge load application point14 mm
α - Contact angle17 °
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1 mm
Precision classP4S
Mass0,149 kg
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PRODUCT PERFORMANCE
C - Dynamic load10,4 kN
C0 - Static load6,1 kN
Cu - Fatigue limit load0,37 kN
f0 - Coefficient7.971
Axial displacement K Factor1.32
Preload level7
Preload value0,05 kN
Axial rigidity39 N/µm
Radial rigidity198 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
N lim - Grease lubrication limit speed33000 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)8,716 Hz
BPFI - Over rolling frequency on inner (60 rpm)11,284 Hz
BSF - Over rolling frequency on rolling element (60 rpm)7,326 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,663 Hz
FTF - Rotational frequency - cage (60 rpm)0,436 Hz
ABUTMENT
da min - Min shoulder diameter IR40,5 mm
db min - Min IR shoulder diameter40,5 mm
Da max - Max shoulder diameter OR56,5 mm
Db max - Max OR shoulder diameter56,5 mm
r1a - Max fillet radius1 mm
ra max - Max shaft & housing fillet radius1,5 mm
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