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 344 N2MA

QJ 344 N2MA

Dimensions

d		220	mm
D		460	mm
B		88	mm
d₁	≈	308	mm
D₁	≈	372	mm
a		238	mm
h		15	mm
b		12.5	mm
r₀		2.5	mm
r_1,2	min.	5	mm

Abutment dimensions

d_a	min.	242	mm
D_a	max.	438	mm
r_a	max.	4	mm

Calculation data

Basic dynamic load rating	C	780	kN
Basic static load rating	C₀	1400	kN
Fatigue load limit	P_u	32	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

Model Number: QJ 344 N2MA
Inner Diameter：220mm Outer Diameter：460mm Width：88mm
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:car and accessories,nail products,fabric products,Rolling mill,survey accessories,relay,Generator,Broadcasting System,historical instruments,PVC,Die
Similar models:NJ 344 M NCF 2344 ECJB 34306/34478 NU 2344 ECMA QJ 1248 MA/344524 BD-22344 CCK/W33-OH 2344 H NJG 2344 VH NU 344 M HJ 344 BD-22344-2CS5K/VT143-OH 2344 H
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Hot number： 12369 239/950 CA/W33 30216 61972 MA 7211 ACD/HCP4A 7221 BECBM C 2228 K G 40x47x4 GB 4932 N 1008 KTN/SP NUP 215 ECJ NX 30 Z PCM 12012560 E PL 72 SIQG 100 ES