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Single row tapered roller bearings

32021A - SNR

32021A

Tapered roller bearing, pressed steel cage

The single row tapered roller bearing is available in metric dimensions (ISO 355 and JIS B 1512 standards) and in inches (ABMA standard, metric series including J). The single row in tapered roller bearing range, is the most widely used and is generally mounted in opposition.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter105 mm
D - External diameter160 mm
B - Bearing/Inner ring width35 mm
C - Outer ring width26 mm
T - Total width35 mm
d1 - External diameter inner ring133,3 mm
a - Charge load application point34,6 mm
rs - Min fillet radius2,5 mm
r1s - Min fillet radius2 mm
Mass2,365 kg
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PRODUCT PERFORMANCE
C - Dynamic load210 kN
A2 - Rating life coefficient1
C0 - Static load327 kN
Cu - Fatigue limit load36,7 kN
e - Coefficient0.44
Y0 - Static axial load coefficient0.74
Y2 - Upper axial load coefficient1.35
N ref - Reference thermal speed2800 tr/min
N lim - Mechanical Limit Speed4200 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)12,642 Hz
BPFI - Over rolling frequency on inner (60 rpm)15,358 Hz
BSF - Over rolling frequency on rolling element (60 rpm)9,791 Hz
BRF - Rotational frequency – rolling element (60 rpm)4,896 Hz
FTF - Rotational frequency - cage (60 rpm)0,451 Hz
ABUTMENT
da max - Max shoulder diameter IR116 mm
db min - Min IR shoulder diameter115 mm
Da min - Min shoulder diameter OR143 mm
Da max - Max shoulder diameter OR150 mm
Db min - Min OR shoulder diameter154 mm
Ca - Min clearance6 mm
Cb - Min clearance9 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius2 mm
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