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Double-row self-aligning ball bearings

1218SK - NTN

1218SK

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

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter90 mm
D - External diameter160 mm
B - Bearing/Inner ring width30 mm
rs - Min fillet radius2 mm
Associated sleeve referenceH218X
Radial clearance classCN
Precision classP0
Mass2,56 kg
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PRODUCT PERFORMANCE
C - Dynamic load57,5 kN
C0 - Static load23,5 kN
Cu - Fatigue limit load0,94 kN
e - Coefficient0.17
Y0 - Static axial load coefficient3.9
Y1 - Lower axial load coefficient3.8
Y2 - Upper axial load coefficient5.8
N lim - Oil lubrication limit speed4300 tr/min
N lim - Grease lubrication limit speed3600 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR99 mm
da max - Max shoulder diameter IR111 mm
db - Min diameter for Sleeve95 mm
Ce - Min length fro Sleeve6 mm
Da max - Max shoulder diameter OR151 mm
ra max - Max shaft & housing fillet radius2 mm
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