Bearings, units and housings -- Ball bearings -- Angular contact ball bearings -- Four-point contact ball bearings -- Angular contact ball bearings, four-point contact ball bearings SKF QJ 308 MA

QJ 308 MA

SKF Explorer

Dimensions

d		40	mm
D		90	mm
B		23	mm
d₁	≈	52	mm
D₁	≈	72.5	mm
a		46	mm
r_1,2	min.	1.5	mm

Abutment dimensions

d_a	min.	49	mm
D_a	max.	81	mm
r_a	max.	1.5	mm

Calculation data

Basic dynamic load rating	C	78	kN
Basic static load rating	C₀	64	kN
Fatigue load limit	P_u	2.7	kN
Limiting speed		14000	r/min
Calculation factor	A	11.177
Calculation factor	e	0.95
Calculation factor	X	0.6
Calculation factor	Y₀	0.58
Calculation factor	Y₁	0.66
Calculation factor	Y₂	1.07

Mass

Mass bearing

0.78

Model Number: QJ 308 MA
Inner Diameter：40mm Outer Diameter：90mm Width：23mm
Reference speed:14000 r/min Limiting speed:-
Type：Bearings, units and housings Ball bearings Angular contact ball bearings Four-point contact ball bearings
Details： Four-point contact ball bearings Angular contact ball bearings, four-point contact ball bearings
Update date：2026-04-16
Application:car instrument,transportation equipment,industrial fans,horizontal processing,electronic materials,gear type,sheet industry,construction machinery and equipment,printing equipment,Doppler,non-ferrous metal alloy
Similar models:NCF 3080 CV BD-C 3084 KM-OH 3084 H GEZ 308 ES-2RS N 308 ECP SNP 3088x16.1/2 32308 B BD-C 3088 KMB-AOHX 3088 G NUP 308 ECP 89308 TN 7308 BEGBM
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