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 MA

QJ 304 MA

SKF Explorer

Dimensions

d		20	mm
D		52	mm
B		15	mm
d₁	≈	27.5	mm
D₁	≈	40.8	mm
a		25	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 MA
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：2025-12-09
Application:Medical room equipment,metallurgical mold,Vacuum generator,van,pipe fittings Steel industry,Optical Instruments,lifting equipment Hoisting hoist,wheel lathe,storage and transportation equipment,shaft milling machine,Handling machinery and various industrial machinery
Similar models:SAF 23040 KAT x 7.1/8 SNLN 3048 332304 A BD-C 3048 K-AOH 3048 SAF 23044 KAT x 7.15/16 SAF 23048 KATLC x 9 SNP 3048x8.15/16 PCM 030403 E/VB055 SAF 23044 KA x 7.7/8 BD-C 3044 K-AOH 3044 G
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PCM 161825 E	16	18	25	Bearings, units and housings
PCM 556030 M	55	60	30	Bearings, units and housings

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