Four Point Contact Ball Bearings

PMK Four Point Contact Ball Bearings are single-row angular contact bearings designed to carry axial loads in both directions while occupying minimal space. The raceway geometry allows each ball to contact the raceways at four points, enabling bidirectional axial load support with high rigidity.

These bearings are ideal where axial loads alternate in direction and radial loads are moderate, eliminating the need for two single-row bearings.

Key benefits

Axial load capacity in both directions with compact design.
High rigidity and precise guidance under combined loads.
Reduced installation space and simplified bearing arrangement.
Low friction and stable running performance.
Cost-effective solution for reversible axial load applications.

Applications

Machine tool tables and spindles.
Rotary tables and gear reducers.
Industrial actuators and control systems.
Robotics and aerospace mechanisms.

Request Quote (RFQ)

Specifications

Boundary dimensions (mm)					Basic load ratings (kN)		Designations		Mass	Limiting speeds (r/min)
d	D	B	r_min	r_1min	C_r	C_or	Current	Original	kg	Grease	Oil
150	225	35	2.1	2.1	225	275	QJ1030	176130	5.1	1900	2800
	225	35	2.1	2.1	225	275	QJF1030	116130	5.1	1900	2800
	270	45	3	3	302	372	QJ230	176230	12.5	1700	2400
	270	45	3	3	302	372	QJF230	116230	12.5	1700	2400
	320	65	4	4	494	710	QJ330	176330	29	1600	2200
	320	65	4	4	494	710	QJF330	116330	29	1600	2200
160	240	38	2.1	2.1	260	318	QJ1032	176132	6.3	1800	2600
	240	38	2.1	2.1	260	318	QJF1032	116132	6.3	1800	2600
	290	48	3	3	352	455	QJ232	176232	14.6	1600	2200
	290	48	3	3	352	455	QJF232	116232	14.6	1600	2200
	340	68	4	4	585	865	QJ332	176332	31	1500	2000
	340	68	4	4	585	865	QJF332	116332	31	1500	2000
170	260	42	2.1	2.1	226	350	QJ1034	176134	8.5	1700	2400
	260	42	2.1	2.1	226	350	QJF1034	116134	8.5	1700	2400
	265	42	2.1	2.1	226	350	QJF1034X1	176734X1	9	1300	1600
	310	52	4	4	358	480	QJ234	176234	19.5	1600	2200
	310	52	4	4	358	480	QJF234	116234	19.5	1600	2200
	360	72	4	4	618	965	QJ334	176334	41.5	1400	1900
	360	72	4	4	618	965	QJF334	116334	41.5	1400	1900
180	280	46	2.1	2.1	335	408	QJ1036	176136	11	1600	2200
	280	46	2.1	2.1	335	408	QJF1036	116136	11	1600	2200
	320	52	4	4	392	545	QJ236	176236	20.5	1500	2000
	320	52	4	4	392	545	QJF236	116236	20.5	1500	2000
190	290	46	2.1	2.1	348	430	QJ1038	176138	11.5	1600	2200
	290	46	2.1	2.1	348	430	QJF1038	116138	11.5	1600	2200
	340	55	4	4	455	735	QJ238	176238	39	1400	2000
	340	55	4	4	455	735	QJF238	116238	39	1400	2000
200	310	51	2.1	2.1	380	498	QJ1040	176140	14.9	1500	2000
200	310	51	2.1	2.1	380	498	QJF1040	116140	14.9	1500	2000
220	340	56	3	3	462	645	QJ1044	176144	21.1	1400	1800
	340	56	3	3	462	645	QJF1044	116144	21.1	1400	1800
	400	65	4	4	595	980	QJ244	176244	39	1100	1500
	400	65	4	4	595	980	QJF244	116244	39	1100	1500
240	360	56	3	3	478	715	QJ1048	176148	22.1	1300	1700
	360	56	3	3	478	715	QJF1048	116148	22.1	1300	1700
	440	72	4	4	655	1180	QJ248	176248	53	1000	1400
	440	72	4	4	655	1180	QJF248	116248	53	1000	1400
260	400	65	4	4	585	940	QJ1052	176152	34.5	1200	1600
260	400	65	4	4	585	940	QJF1052	116152	34.5	1200	1600
280	420	65	4	4	615	1020	QJ1056	176156	36.5	1100	1500
280	420	65	4	4	615	1020	QJF1056	116156	36.5	1100	1500
300	460	74	4	4	762	1340	QJ1060	176160	52.5	1000	1400
300	460	74	4	4	762	1340	QJF1060	116160	52.5	1000	1400
320	480	74	4	4	785	1430	QJ1064	176164	54.5	950	1300
320	480	74	4	4	785	1430	QJF1064	116164	54.5	950	1300
340	520	82	5	5	885	1670	QJ1068	176168	72	850	1200
340	520	82	5	5	885	1670	QJF1068	116168	72	850	1200
360	540	82	5	5	915	1770	QJ1072	176172	75.5	850	1100
360	540	82	5	5	915	1770	QJF1072	116172	75.5	850	1100
380	560	82	5	5	930	1850	QJ1076	176176	78.5	800	1100
380	560	82	5	5	930	1850	QJF1076	116176	78.5	800	1100
400	600	90	5	5	1070	2180	QJ1080	176180	100	750	1000
400	600	90	5	5	1070	2180	QJF1080	116180	100	750	1000
440	650	94	6	6	1160	2520	QJ1088	176188	124	700	900
440	650	94	6	6	1160	2520	QJF1088	116188	124	700	900
460	680	100	6	6	936	2385	QJ1092	176192	130	600	800
460	830	165	7.5	7.5	1377	3825	QJ1292	1176292	415	530	700
480	700	100	6	6	954	2520	QJ1096	176196	135	560	750
480	870	170	7.5	7.5	1512	4275	QJ1296	1176296	470	500	670