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 248 N2MA

QJ 248 N2MA

Dimensions

d		240	mm
D		440	mm
B		72	mm
d₁	≈	315	mm
D₁	≈	365	mm
a		238	mm
h		12.5	mm
b		15	mm
r₀		2.5	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	650	kN
Basic static load rating	C₀	1200	kN
Fatigue load limit	P_u	27.5	kN
Limiting speed		2400	r/min
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

53.2

Model Number: QJ 248 N2MA
Inner Diameter：240mm Outer Diameter：440mm Width：72mm
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：2025-12-09
Application:transportation equipment,,Generator,security equipment,sleep monitoring,respirator,EEG,Textile Industry Accessories and Accessories,storage and transportation equipment,Vertical pull,floor industry
Similar models:BD-22248 CCK/W33-OH 3148 H 32248 SNL 3248 G 248/800 CAK30MA/W20 NUH 2248 ECMH/PEX HM 218248/210 QJ 1248 MA/344524 WS 81248 BD-23248 CCK/W33-OH 2348 H 23248 CC/W33
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Model No.	Inner Diameter	Outer Diameter	Width	Type
18818	47.625	76.2	7.95	Seals
18924	47.625	88.8	11.13	Seals
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85074	-	-	25.4	Seals
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BEAM 020068-2RZ	20	68	28	Bearings, units and housings
NJ 2310 ECPH	50	110	40	Bearings, units and housings

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