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 1248 MA/344524

QJ 1248 MA/344524

Dimensions

d		240	mm
D		440	mm
B		85	mm
d₁	≈	316	mm
D₁	≈	364	mm
a		340	mm
r_1,2	min.	4	mm

Abutment dimensions

d_a	min.	258	mm
D_a	max.	422	mm
r_a	max.	3	mm

Calculation data

Basic dynamic load rating	C	663	kN
Basic static load rating	C₀	1220	kN
Fatigue load limit	P_u	28	kN
Limiting speed		2400	r/min
Calculation factor	e	1.34
Calculation factor	X	0.54
Calculation factor	Y₀	0.44
Calculation factor	Y₁	0.47
Calculation factor	Y₂	0.81

Mass

Mass bearing

Model Number: QJ 1248 MA/344524
Inner Diameter：240mm Outer Diameter：440mm Width：85mm
Reference speed:2400 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：2026-06-24
Application:Ball screw,electromagnetic clutch,drawing die,blood cell reagent,industrial supplies,economic mold,pump industry,food / grain / food equipment,Textile Accessories,coal,coupling type
Similar models:81248 M WS 81248 GS 81248 51248 M K 81248 M QJ 1248 MA/344524
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Model No. Inner Diameter Outer Diameter Width Type

313499 B
317
71922 CB/HCP4AL
71952 CD/HCP4AL
SSAFS 22520 TLC

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Model No.	Inner Diameter	Outer Diameter	Width	Type
313499 B
317
71922 CB/HCP4AL
71952 CD/HCP4AL
SSAFS 22520 TLC