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Single row tapered roller bearings

32018A - SNR

32018A

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 diameter90 mm
D - External diameter140 mm
B - Bearing/Inner ring width32 mm
C - Outer ring width24 mm
T - Total width32 mm
d1 - External diameter inner ring114,5 mm
a - Charge load application point30 mm
rs - Min fillet radius2 mm
r1s - Min fillet radius1,5 mm
Mass1,72 kg
ISO 355 referenceT3CC090
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PRODUCT PERFORMANCE
C - Dynamic load179 kN
A2 - Rating life coefficient1
C0 - Static load271 kN
Cu - Fatigue limit load31,7 kN
e - Coefficient0.42
Y0 - Static axial load coefficient0.78
Y2 - Upper axial load coefficient1.42
N ref - Reference thermal speed3100 tr/min
N lim - Mechanical Limit Speed4900 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)12,118 Hz
BPFI - Over rolling frequency on inner (60 rpm)14,882 Hz
BSF - Over rolling frequency on rolling element (60 rpm)9,302 Hz
BRF - Rotational frequency – rolling element (60 rpm)4,651 Hz
FTF - Rotational frequency - cage (60 rpm)0,449 Hz
ABUTMENT
da max - Max shoulder diameter IR100 mm
db min - Min IR shoulder diameter100 mm
Da min - Min shoulder diameter OR125 mm
Da max - Max shoulder diameter OR131,5 mm
Db min - Min OR shoulder diameter134 mm
Ca - Min clearance6 mm
Cb - Min clearance8 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius1,5 mm
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