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Single row tapered roller bearings

32008A - SNR

32008A

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 diameter40 mm
D - External diameter68 mm
B - Bearing/Inner ring width19 mm
C - Outer ring width14,5 mm
T - Total width19 mm
d1 - External diameter inner ring54,8 mm
a - Charge load application point15 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,271 kg
ISO 355 referenceT3CD040
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PRODUCT PERFORMANCE
C - Dynamic load54,2 kN
A2 - Rating life coefficient1
C0 - Static load71,1 kN
Cu - Fatigue limit load8,7 kN
e - Coefficient0.38
Y0 - Static axial load coefficient0.87
Y2 - Upper axial load coefficient1.58
N ref - Reference thermal speed6200 tr/min
N lim - Mechanical Limit Speed10000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)10,171 Hz
BPFI - Over rolling frequency on inner (60 rpm)12,829 Hz
BSF - Over rolling frequency on rolling element (60 rpm)8,275 Hz
BRF - Rotational frequency – rolling element (60 rpm)4,138 Hz
FTF - Rotational frequency - cage (60 rpm)0,442 Hz
ABUTMENT
da max - Max shoulder diameter IR46 mm
db min - Min IR shoulder diameter45,5 mm
Da min - Min shoulder diameter OR60 mm
Da max - Max shoulder diameter OR62,5 mm
Db min - Min OR shoulder diameter65 mm
Ca - Min clearance4 mm
Cb - Min clearance4,5 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
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