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：2026-06-24
Application:machine tool spindle,Internal thread type,Forging machine,machining,machine lathe,test laboratory equipment and accessories,metering pump,screen filter,light therapy instrument,Grinding and polishing equipment,standing experimental equipment
Similar models:SSAFS 23040 KATLC x 7.3/16 SSAFS 23044 KA x 7.13/16 6304-2Z/VA208 SNL 3048 ATURT HME 3048 SSAFS 23040 KAT x 7.1/8 7304 BECBPH SAF 23040 KA x 7.1/8 23048 CCK/W33 W 6304-2RZ
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Model No. Inner Diameter Outer Diameter Width Type

20x32x7 HMS5 V
407254
71901 CE/HCP4A
PCZ 0303 E
S7002 ACD/P4A

Purchase the SKF QJ 304 MA Angular contact ball bearings, four-point contact ball bearings Please fill in the following

Hot number： 21265 238020 28276 708 CD/P4AH 99356 AS 0515 FSAF 1615 GEZ 012 ES HJ 422 NCF 3010 CV NN 3028 K/SPW33 NU 207 ECJ SY 45 WDW SY 5/8 TF W 61912-2Z

Model No.	Inner Diameter	Outer Diameter	Width	Type
20x32x7 HMS5 V
407254
71901 CE/HCP4A
PCZ 0303 E
S7002 ACD/P4A