This type of bearings is separable bearings. Their contact angles are same as 35°. When received no load or pure radial load, the steel balls of the ball bearing contact with the four points of the rings. When it is received a pure axial load, the steel balls perform a two-point contact with the ring. In addition, besides the axial load from both directions, this kindly of bearing can take torque-load as well. 

Angular contact ball bearings have a contact angle so that they can sustain significant axial loads in one direction together with radial loads. Furthermore, since an axial component is generated when a radial load is applied, these bearings are generally used in pairs, triplex sets, quadruplex sets, or multiplex sets

 

Four-point contact ball bearings extensively used in: 

 Machine tool main shafts

 Mill grinding wheel shafts

 Internal-combustion engine liquid gear boxes

 Worm reduction gears

 Electric drillers

 Centrifugal machines

 Pressure boosters

Designation	Principal dimensions			Mass
	d	D	B	Kgs
QJF1017M	85	130	22
QJF1018M	90	140	24
QJF1020M	100	150	24	1.63
QJF1022M	110	170	28
QJF1024M	120	180	28
QJF1026M	130	200	33	4.53
QJF1028M	140	210	33	5.26
QJF1030M	150	225	35	6.22
QJF1032M	160	240	38	7.8
QJF1034M	170	260	42	9
QJF1036M	180	280	46	10.7
QJF1038M	190	290	46	11.5
QJF1040M	200	310	51	15
QJF1042M
QJF1044M	220	340	50	18
QJF1048M	240	360	56	21
QJF1052M	260	400	65	27.7
QJF1056M	280	420	65	33
QJF1060M	300	460	74	44
QJF1064M	320	480	74	50
QJF1068H	340	520	82	68
QJF1072M	360	540	82	68.8
QJF220M	100	180	34
QJF222M	110	200	38	5.5
QJF224M	120	215	40
QJF226M	130	230	40
QJF228M	140	250	42	10.4
QJF230M	150	270	45
QJF232M	160	290	48
QJF234M	170	310	52
QJF236M	180	320	52	18
QJF238M	190	340	55	23.2
QJF240M	200	360	58	27.3
QJF312M	60	130	31	2.75
QJF318M	90	190	43
QJF320M	100	215	47
QJF322M	110	240	50
QJF324M	120	260	55	14.6
QJF326M	130	280	58	21
QJF328M	140	300	62
QJF330M	150	320	65	28.9
QJF332M	160	340	68
QJF334M	170	360	72
QJF1020X1M	100	149.5	24
QJF1022X1M	110	169.5	28
QJF1024X1M	120	179.5	28
QJF1026X1M	130	199.5	33
QJF1028X1M	140	209.5	33
QJF1030X1M	150	224.5	35
QJF1032X1M	160	239.5	38
QJF1034X1M	170	259.5	42
QJF3936X1M	180	259.5	52	8.7
QJF3938X1M	190	289.5	46
QJF3940X3M	200	289.5	58
QJF3944X1M	220	309.5	60	15
QJF3948X1M	240	329.5	60	13.8
QJF3948X1M  1	240	329.5	60	13.8
QJF3952X2M	260	400	60	20.8
QJF1056X1	280	419.5	65
QJF29/321X2M	320	440	65
QJFO/530X2	530	780	60
QJF9/560X2	560	720	36	40.3
QJF9/560X1	560	780	60	103
QJF6/700	700	900	36	66
QJF1930X3M	150	225	35
QJF1936X3M	180	249.5	33	5.04
QJF1940X3M	200	280	51
QJF1944X3M	220	300	60
3924-2KDCM	120	165	34	2.51
3932-2KDCM	160	220	45	5.44
3934-2KDCM	170	230	45	5.9
3944-2KDCM	200	300	60	13.1
QJ1017M	85	130	22	1.11
QJ1018M	90	140	24	1.4
QJ1020M	100	150	24	1.6
QJ1022M	110	170	28	2.5
QJ1024M	120	180	28	2.7
QJ1026M	130	200	33	4.53
QJ1028M	140	210	33	4.28
QJ1030M	150	225	35	4.6
QJ1032M,	160	240	38	6.6
QJ1034M	170	260	42	8.3
QJ1034N2Q1/So	170	260	42	8.3
QJ1036M	180	280	46	10.7
QJ1038M	190	290	46	11.5
QJ1038 N2Q1/So	190	290	46	11.5
QJ1040M	200	310	51	15
QJ1044M	220	340	56	17.9
QJ1044 N2Q1/So	220	340	56	17.9
QJ1048M	240	360	56	21
QJ1048 N2Q1/So	340	360	56	21
QJ1052M	260	400	65	27.5
QJ1056M	280	420	65	33
QJ1060M	300	460	74	44
QJ1064M	320	480	74	50
QJ1068M	340	520	82	68
QJ1072M	360	540	82	68.8
QJ208M	40	80	18	0.441
QJ212M	60	110	22	1.03
QJ215M	75	130	25	1.42
QJ219M	95	170	32	2.6
QJ220M	100	180	34	3.9
QJ220Q1/So	100	180	34	3.9
QJ222M	110	200	38	5.5
QJ222Q1/So	110	200	38	5.58
QJ224M	120	215	40	6.93
QJ224Q1/So	120	215	40	6.5
QJ226M	130	230	40	8.2
QJ226Q1/So	130	230	40
QJ228M	140	250	42	10.4
QJ228 N2Q1/So	140	250	42	10.4
QJ230M	150	270	45	11.8
QJ230 N2Q1/So	150	270	45	11.8
QJ232M	160	290	48	14.7
QJ232Q1/So	160	290	48	14.7
QJ234M	170	310	52	18.1
QJ234 Q1/So	170	310	52	18.1
QJ236M	180	320	52	10
QJ238M	190	340	55	22
QJ240M	200	360	58	27.3
QJ230 Q1/S0306	30	72	19	0.84
QJ307M	35	80	21	0.42
QJ312M	60	130	31	6.5
QJ307N2Q1/So	35	80	21	0.42
QJ313Q1/So	65	140	33	2.09
QJ314M	70	150	35	3.39
QJ315M/S	75	160	37	3.83
QJ317M	85	180	41	5.45
QJ318M	90	190	43	6.21
QJ318N2M	90	190	43	6.21
QJ318N2M/So	90	190	43	6.21
QJ318N2 Q1So	90	190	43	6.21
QJ3176318Q/So	90	190	43	6.2
QJ319M	95	200	45	7.44
QJ319N2M	95	200	45	7.44
QJ320M	100	215	47	8.78
QJ320N2M	100	215	47	8.78
QJ322M	110	240	50	12.4
QJ322Q	110	240	50	12.4
QJ322 N2 Q1/So	110	240	50	11.4
QJ324M	120	260	55	15.3
QJ324 N2 Q1/So	120	260	55	14.8
QJ326M	130	280	58	20.1
QJ326 N2M	130	280	58	20.1
QJ328M	140	300	62	22.4
QJ328 N2 Q/So	140	300	62	22.9
QJ328 N2 Q1/C2So	140	300	62	22.9