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Double-row self-aligning ball bearings

1308SK - NTN

1308SK

Self-aligning ball bearing, pressed steel cage, tapered bore, open

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter40 mm
D - External diameter90 mm
B - Bearing/Inner ring width23 mm
rs - Min fillet radius1,5 mm
Associated sleeve referenceH308X
Radial clearance classCN
Precision classP0
Mass0,727 kg
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PRODUCT PERFORMANCE
C - Dynamic load29,8 kN
C0 - Static load9,7 kN
Cu - Fatigue limit load0,3 kN
e - Coefficient0.24
Y0 - Static axial load coefficient2.7
Y1 - Lower axial load coefficient2.6
Y2 - Upper axial load coefficient4
N lim - Oil lubrication limit speed8500 tr/min
N lim - Grease lubrication limit speed6700 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR48 mm
da max - Max shoulder diameter IR56 mm
db - Min diameter for Sleeve44 mm
Ce - Min length fro Sleeve5 mm
Da max - Max shoulder diameter OR82 mm
ra max - Max shaft & housing fillet radius1,5 mm
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