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Spherical roller bearings

21310V - SNR

21310V

Spherical roller bearing, pressed steel cage

The spherical roller bearing withstands significant loads and misalignments. This type of roller bearing is well adapted to harsh operating conditions: impacts or vibrations (crushers, vibrating screens, heavy handling, etc.). With the ULTAGE design, NTN offers as standard, unsurpassed endurance and longevity.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter50 mm
D - External diameter110 mm
B - Bearing/Inner ring width27 mm
d2 - External diameter inner ring66,8 mm
D1 - Inner diameter outer ring92,4 mm
rs - Min fillet radius2 mm
Number of lubrication holes0
b - Groove width0 mm
k - Hole diameter0 mm
Radial clearance classCN
Mass1,251 kg
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PRODUCT PERFORMANCE
C - Dynamic load142 kN
C0 - Static load134 kN
Cu - Fatigue limit load16,3 kN
e - Coefficient0.25
Y0 - Static axial load coefficient2.65
Y1 - Lower axial load coefficient2.71
Y2 - Upper axial load coefficient4.04
N ref - Reference thermal speed5400 tr/min
N lim - Mechanical Limit Speed7600 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature200 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)6,271 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,729 Hz
BSF - Over rolling frequency on rolling element (60 rpm)5,861 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,931 Hz
FTF - Rotational frequency - cage (60 rpm)0,418 Hz
ABUTMENT
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR61 mm
Da max - Max shoulder diameter OR99 mm
ra max - Max shaft & housing fillet radius2 mm
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