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Double-row self-aligning ball bearings

1220SK - NTN

1220SK

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

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter100 mm
D - External diameter180 mm
B - Bearing/Inner ring width34 mm
rs - Min fillet radius2,1 mm
Associated sleeve referenceH220X
Radial clearance classCN
Precision classP0
Mass3,74 kg
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PRODUCT PERFORMANCE
C - Dynamic load69,5 kN
C0 - Static load29,7 kN
Cu - Fatigue limit load1,2 kN
e - Coefficient0.17
Y0 - Static axial load coefficient3.8
Y1 - Lower axial load coefficient3.6
Y2 - Upper axial load coefficient5.6
N lim - Oil lubrication limit speed3800 tr/min
N lim - Grease lubrication limit speed3200 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR111 mm
da max - Max shoulder diameter IR125 mm
db - Min diameter for Sleeve106 mm
Ce - Min length fro Sleeve7 mm
Da max - Max shoulder diameter OR169 mm
ra max - Max shaft & housing fillet radius2 mm
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