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 N2MA

QJ 308 N2MA

SKF Explorer

Dimensions

d		40	mm
D		90	mm
B		23	mm
d₁	≈	52	mm
D₁	≈	72.5	mm
a		46	mm
h		4	mm
b		5.5	mm
r₀		0.5	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 N2MA
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：2026-08-20
Application:key lock,plastic molding,Anesthetic Equipment,Display Devices,Pest Monitoring,gantry processing,hydraulic connector,metallurgy,supporting facilities,Dental Equipment,hinge industry
Similar models:1308 ETN9 51308 GEZ 308 ES-2RS YSA 208-2FK + H 2308 BD-BS2-2208-2RSK/VT143-H 2308 E NU 308 ECPH SNL 3080 ATURT HE 308 1308 EKTN9 H 2308
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Model No. Inner Diameter Outer Diameter Width Type

19733
4262
7307 ACCBM
NATV 5
W 6002-2RS1/VP311

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Model No.	Inner Diameter	Outer Diameter	Width	Type
19733
4262
7307 ACCBM
NATV 5
W 6002-2RS1/VP311