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：2026-04-16
Application:Wire grinder,Optical Instruments,organic raw materials,cooling system,Oral Image,textile machinery,machine tool spindle,Garment Accessories,SPA equipment,vertical processing,wheel lathe
Similar models:1304 ETN9 SAFS 23044 KAT x 7.7/8 NJ 304 ECP SSAFS 23044 KATLC x 8 NCF 3040 CV SSAFS 23040 KA x 7.1/4 RNU 2304 ECP AOH 3048 SNL 3040 TURT PBM 304045 M1G1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
10034	25.4	45.24	11.91	Seals
13661	34.925	53.98	7.95	Seals
12355	31.75	44.5008	9.9314	Seals
45x68x10 HMSA10 V	45	68	10	Seals
7205 BEGBY	25	52	15	Bearings, units and housings
99450	114.3	124.46	25.4	Seals
FY 1.15/16 TF/VA228	49.213	-	60.6	Bearings, units and housings
N 1015 KPHA/HC5SP	75	115	20	Bearings, units and housings
NUP 2208 ECJ	40	80	23	Bearings, units and housings
NUP 316 ECP	80	170	39	Bearings, units and housings
RNAO 25x35x26	25	35	26	Bearings, units and housings
SAF 1617 x 3 T	76.2	-	-	Bearings, units and housings

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Hot number： 12371 22226 E 99198 IR 12X16X12 IS1 HJ 1076 K 89322 M NNF 5034 ADA-2LSV PL 530 QJ 240 N2MA S71919 CE/HCP4A SALKAC 10 M W 6008 SI 17 ES SSAFS 23028 KA x 4.7/8 SYE 3 1/2