Key Features

1. High load capacity: No pairing needed, one bearing handles radial + unidirectional axial loads
2. Compact design: Thinner than double row angular contact bearings, saves space in machinery and reduces installation complexity.
3. High resistance to tilting moment: Ideal for overhung loads, slewing rings, and spindle applications.
4. Low friction & vibration: Ensures smooth, quiet operation.
5. Excellent high-speed performance: Optimized raceways enable higher limiting speeds.

Dimensions

Inner diameter: 30mm～560mm

Outer diameter: 72mm～780mm

Width: 19mm～90mm

Application Scope

● Machine tool spindles, machining centers

● Crane slewing rings, excavator swing mechanisms

● High-precision reducers, servo motors

● Aerospace components, robot joints

● High-speed pumps, compressors, fans

Technical Parameters

Selected representative hot models from the QJ/QJF series, covering mainstream working conditions with small, medium and large bores.

Model number	Basic dimensions (mm) d	Basic dimensions (mm) D	Basic dimensions (mm) B	Rated load (kN) Cr	Rated load (kN) Cor	Limiting speed (r/min) Grease lubrication	Limiting speed (r/min) oil lubrication	Weight (kg)
QJ306MA	30	72	19	50.1	38	8000	11000	0.463
QJ307N2Q1	35	80	21	57.2	45	7100	9500	0.690
QJ208	40	80	18	56	46	6700	9000	0.445
QJ308	40	90	23	72	58	5300	8500	0.793
QJ309M	45	100	25	88.9	72	5600	7500	1.080
QJ211	55	100	21	98	71	5300	7000	0.798
QJ212M	60	110	22	92.3	87	4800	6300	0.928
QJ313M	65	140	33	158	140	3800	5300	2.340
QJ214N2Q1	70	125	24	109	109	4000	5600	1.290
QJ314M	70	150	35	185	166	3600	5000	3.280
QJ215M	75	130	25	117	123	3800	5300	1.380
QJ315N2/C9	75	160	37	212	204	3400	4800	3.830
QJ216N2	80	125	22	80	91.5	3900	5200	1.070
QJ216	80	140	26	138	146	3600	5000	2.020
QJ317N2	85	180	41	248	255	3000	4000	5.450
QJ218N2	90	160	30	167	178	3200	4300	2.870
QJ318N2	90	190	43	254	274	2800	3800	6.190
QJ219N2	95	170	32	191	204	3000	4000	3.300
QJ319N2	95	200	45	285	310	2600	3600	7.520
QJF1020	100	150	24	103	128	3200	4300	1.630
QJ220	100	180	34	216	230	2800	3800	3.810
QJ322N2Q1	110	240	50	365	440	2200	3000	11.700
QJ324Q1	120	260	55	405	515	2000	2800	14.800
QJ1026M	130	200	33	182	240	2200	3200	4.220
QJ326N2	130	280	58	425	560	1900	2600	20.100
QJF1028	140	210	33	268	273	2200	3000	3.350
QJ328N2Q1	140	300	62	470	645	1700	2400	23.300
QJF1030	150	225	35	220	298	2000	2800	5.290
QJ330M	150	320	65	540	795	1600	2200	27.400
QJF1032	160	240	38	239	335	1900	2600	6.540
QJ332N2Q1	160	340	68	540	785	1500	2000	34.400
QJF1034	170	259.5	42	292	410	1800	2400	8.820
QJ334	170	360	72	600	970	1500	2200	40.700
QJF1036	180	259.5	52	248	370	1700	2300	10.900
QJ336N2Q1	180	380	75	690	1130	1500	2000	46.200
QJF1038X1	190	289.5	46	325	490	1600	2200	11.100
QJ338	190	340	55	500	800	1400	2000	50.000
QJF1040	200	300	58	325	505	1500	2000	14.700
QJ340N2	200	360	58	515	855	1300	1800	55.300
QJF3944	220	299.5	60	265	420	1200	1600	12.700
QJ344N2Q1	220	400	78	465	1050	1100	1500	79.200
QJF1048	240	339.5	60	370	640	1100	1500	16.100
QJ248	240	360	56	430	756	1000	1400	54.000
QJF1052	260	360	46	387	676	1000	1400	15.500
QJ252	260	480	80	670	1372	900	1300	72.800
QJF2956X3	280	389.5	65	430	800	960	1000	24.100
QJ1056M	280	420	65	533	1010	960	1000	34.400
QJF1060	300	460	74	605	1224	900	1100	48.200
QJ1260	300	540	98	700	1480	800	1150	106.000
QJF1064X1	320	479.5	74	630	1330	850	1200	52.200
QJ1264	320	580	105	900	2000	850	1100	132.000
QJ1068	340	520	82	750	1635	700	950	68.400
QJ1072	360	540	82	775	1750	850	1000	71.500
QJ1272	360	650	122	1080	2500	750	1000	188.000
QJ1076	380	560	82	865	1900	700	950	74.000
QJ1276	380	680	132	1140	2900	650	950	225.000
QJ1080	400	600	90	880	5150	750	950	95.000
QJ1280	400	720	140	1245	3125	650	850	259.000
QJF1084	420	620	90	920	2250	630	900	101.000
QJ1284	420	760	150	1360	3700	550	750	320.000
QJ1088	440	650	94	975	2550	600	800	110.000
QJ1288	440	790	155	1360	3700	600	700	352.000
QJ1092	460	680	100	1010	2550	650	850	130.000
QJ1292	460	830	165	1490	4200	500	700	420.000
QJF9/560X1	560	780	60	689	1840	600	800	100.000

Hot Tags: four-point contact ball bearing, China four-point contact ball bearing manufacturers, suppliers, factory, Angular Contact Ball Bearing Matched Set, Matched Angular Contact Ball Bearing, Single Row Angular Ball Bearing with Cage, Single Row Four Point Contact Ball Bearing, Single Row Radial Angular Contact Ball Bearing, Tandem Matched Bearing

Four-Point Contact Ball Bearing

Key Features

Dimensions

Application Scope

Technical Parameters