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 304 N2MA

QJ 304 N2MA

SKF Explorer

Dimensions

d		20	mm
D		52	mm
B		15	mm
d₁	≈	27.5	mm
D₁	≈	40.8	mm
a		25	mm
h		3.5	mm
b		4.5	mm
r₀		0.5	mm
r_1,2	min.	1.1	mm

Abutment dimensions

d_a	min.	27	mm
D_a	max.	45	mm
r_a	max.	1	mm

Calculation data

Basic dynamic load rating	C	32	kN
Basic static load rating	C₀	21.6	kN
Fatigue load limit	P_u	0.93	kN
Limiting speed		24000	r/min
Calculation factor	A	1.428
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

0.18

Model Number: QJ 304 N2MA
Inner Diameter：20mm Outer Diameter：52mm Width：15mm
Reference speed:24000 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:storage shelves,lifting equipment Hoisting hoist,stirrer,reducer,instrumentation instrument,test equipment,defogging and degreasing,expectoration machine,education model Instruments,building decoration raw materials and accessories,wall industry
Similar models:GEZ 304 ES SAFS 23048 KA x 9 SSAFS 23048 KAT x 8.7/16 23044 CCK/W33 + AOH 3044 G SSAFS 23044 KA x 7.15/16 GEZH 304 ES BD-23048 CCK/W33-OH 3048 H SAF 23040 KA x 7.3/16 SNL 3048 TURT NN 3044 K/SPW33
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Model No. Inner Diameter Outer Diameter Width Type

220 VA V
585 VRME R
BEAS 020052-2RZ/PE
D/W RW166 R
NU 1015 M/C3VL0241

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Hot number： 23138 CC/W33 266x310x20 HS8 R 28760 35x52x8 CRWA1 P 45x68x10 HMS5 V 46208 7022 CE/HCP4A 90139 FYJ 1.3/4 TF FYTWK 1.1/4 YTA PSM 162216 A51 PSMF 253516 A51 SAF 23034 KAT x 5.13/16 W 638/2 XR-2Z Z 200 F

Model No.	Inner Diameter	Outer Diameter	Width	Type
220 VA V
585 VRME R
BEAS 020052-2RZ/PE
D/W RW166 R
NU 1015 M/C3VL0241