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1218 - SNR

1218

Self-aligning ball bearing, pressed steel cage, open

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter90 mm
D - External diameter160 mm
B - Bearing/Inner ring width30 mm
d1 - External diameter inner ring112,7 mm
D1 - Inner diameter outer ring138,2 mm
rs - Min fillet radius2 mm
Radial clearance classCN
Precision classP0
Mass2,5 kg
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PRODUCT PERFORMANCE
C - Dynamic load56,4 kN
C0 - Static load23,5 kN
Cu - Fatigue limit load0,96 kN
e - Coefficient0.17
Y0 - Static axial load coefficient3.93
Y1 - Lower axial load coefficient3.76
Y2 - Upper axial load coefficient5.81
N ref - Reference thermal speed4800 tr/min
N lim - Mechanical Limit Speed5400 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)8,299 Hz
BPFI - Over rolling frequency on inner (60 rpm)10,701 Hz
BSF - Over rolling frequency on rolling element (60 rpm)7,736 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,868 Hz
FTF - Rotational frequency - cage (60 rpm)0,437 Hz
ABUTMENT
da min - Min shoulder diameter IR99 mm
Da max - Max shoulder diameter OR151 mm
ra max - Max shaft & housing fillet radius2 mm
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