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Four-point contact ball bearings

Four point contact ball bearings are radial single row angular contact ball bearings with raceways designed to support axial loads in both directions. For a given axial load, a limited radial load (load ratio) can also be supported. The bearing is separable, i.e. the outer ring with ball and cage assembly can be installed separately from the two inner ring halves.

Basic dimensions			Basic load rating		Speed ratings		Mass	Model
			dynamic	static	Reference speed	Limiting speed		Bearing No.
d [mm]	D [mm]	B [mm]	C [kN]	C0 [kN]	[r/min]	[r/min]	[kg]
180	380	75	612	990		2700	47.5	QJ 336 N2MA Bearing
190	290	46	327.6	504		3060	11.5	QJ 1038 N2MA Bearing
190	340	55	459	765		2880	23.3	QJ 238 N2MA Bearing
190	400	78	631.8	1044		2520	49	QJ 338 N2MA Bearing
200	310	51	351	558		2880	15	QJ 1040 N2MA Bearing
200	360	58	486	823.5		2700	28.5	QJ 240 N2MA Bearing
200	360	70	468	778.5		2700	32.5	QJ 1240 N2MA Bearing
220	400	78	532.8	918		2340	45.5	QJ 1244 N2MA Bearing
220	460	88	702	1260		2160	78	QJ 344 N2MA Bearing
240	440	72	585	1080		2160	53.2	QJ 248 N2MA Bearing
240	440	85	596.7	1098		2160	61	QJ 1248 MA/344524 Bearing
260	480	80	655.2	1287		1980	68	QJ 252 N2MA Bearing
260	480	90	666.9	1314		1980	78	QJ 1252 N2MA Bearing
280	420	65	526.5	1026		2160	33.5	QJ 1056 N2MA/C4 Bearing
280	500	90	655.2	1314		1800	82	QJ 1256 N2MA Bearing
300	460	74	631.8	1287		1980	]47	QJ 1060 MA Bearing
300	540	98	748.8	1584		1710	105	QJ 1260 N2MA Bearing
320	480	74	643.5	1377		1800	50	QJ 1064 MA Bearing
320	480	74	643.5	1377		1800	50	QJ 1064 N2MA Bearing
320	580	105	860.4	1872		1530	130	QJ 1264 N2MA Bearing
340	520	82	702	1530		1620	67.5	QJ 1068 N2MA Bearing
340	620	118	954	2205		1440	165	QJ 1268 MA/344524 Bearing
360	540	82	766.8	1737		1530	70.5	QJ 1072 N2MA Bearing
360	650	122	999	2340		1350	190	QJ 1272 N2MA Bearing
380	560	82	795.6	1836		1440	72.5	QJ 1076 N2MA Bearing
380	680	132	1053	2565		1260	220	QJ 1276 N2MA Bearing
400	600	90	813.6	1944		1350	95	QJ 1080 N2MA Bearing
400	720	140	1170	2925		1170	265	QJ 1280 N2MA Bearing
420	620	90	830.7	2052		1350	99.5	QJ 1084 N2MA Bearing
420	760	150	1287	3375		1170	315	QJ 1284 N2MA Bearing