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QWL Type Ball Cage Universal Coupling

The QWL-series ball-cage universal coupling is a power transmission component that combines high precision with constant-velocity transmission characteristics. Its core advantage lies in its ability to maintain perfectly synchronous, constant-velocity rotation between the driving and driven shafts, even when there is an angular misalignment or slight displacement; this performance significantly surpasses that of standard cross-shaft universal couplings. Torque is transmitted via the pure rolling motion of precision steel balls between the cage windows and the raceways.

The series offers nominal torque ratings ranging from 180 N·m to 10,000 N·m and swing diameters between 85 mm and 275 mm, while supporting maximum angular misalignments of 14° to 18°. Thanks to its symmetrical raceway design and stable mechanical structure, the QWL coupling offers robust impact resistance while effectively eliminating speed fluctuations and vibrations during transmission. Widely used in applications requiring exceptional transmission precision—such as metallurgical rolling mill roller tables, CNC machine tool spindles, precision conveyor lines, and the slewing mechanisms of construction machinery—it serves as an ideal connection solution for achieving high-precision motion control under heavy-load operating conditions.

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Product Parameters

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TECHNICAL PARAMETERS

Type	Nominal torque Tn/N・m	Allowable maximum shaft inclination angle βmax（°）		Shaft hole diameter d （H7）	shaft hole length L		D	L0 min		Total length extension/ contraction amount ΔL0	A	D1	D2	D3	D4	Bolt Diameter d1	Moment of inertia I/kg·m2				Mass m/kg
																	L0 min		per 100 increment of L₀		L0 min		per 100 increment of L₀
		Stationary state	Operating state		Y	J		Through shaft	Welded shaft								Through shaft	Welded shaft	Through shaft	Welded shaft	Through shaft	Welded shaft	Through shaft	Welded shaft
QWL1	180	16	14	25	62	44	85	284	392	24	48	55	20	50	66	M8	0.0019	0.00216	0.0001	0.00029	3.94	4.68	0.25	0.55
				28
				30	82	60
				32
				35
QWL2	355	16	14	32	82	60	100	394	478	32	56	66	30	50	80	M8	0.00511	0.00535	0.0006	0.00029	7.21	7.92	0.56	0.55
				35
				38	112	84
				40
				45
QWL3	800	18	16	45	112	84	130	443	561	40	68	90	31.5	60	106	M10	0.01899	0.01964	0.00008	0.00052	14.69	19.02	0.61	0.68
				48
				50
				55
				56
				60	142	107
				63
				65
				70
QWL4	1400	18	16	55	112	84	150	537	643	48	80	105	44.5	76	124	M12	0.04438	0.04638	0.00029	0.00111	25.06	27.42	1.19	0.88
				56
				60	142	107
				63
				65
				70
				71
				75
QWL5	2240	18	16	63	142	107	175	574	714	54	92	120	50	89	140	M16	0.11238	0.11663	0.00048	0.00183	36.32	40.17	1.54	1.04
				65
				70
				71
				75
				80	172	132
				85
				90
QWL6	3150	18	16	71	142	107	200	675	805	54	103	140	57.5	102	159	M12	0.21635	0.2236	0.00084	0.00328	55.11	59.95	2.04	1.04
				75
				80	172	132
				85
				90
				95
				100	212	167
				110
QWL7	4500	18	16	80	172	132	220	701	840	54	110	160	63	102	180	M12	0.348	0.3555	0.00122	0.00328	72.34	77.54	2.45	1.42
				85
				90
				95
				100	212	167
				110
				120
QWL8	6300	20	18	90	172	132	245	710	910	60	124	180	76	14	197	M16	0.584	0.618	0.00257	0.01138	96.92	109.97	3.56	2.6
				95
				100	212	167
				110
				120
				125
				130	252	202
				140
QWL9	10000	20	18	100	212	167	275	842	1065	70	173	205	81	140	226	M16	1.26225	1.298	0.00331	0.01138	148.36	162.84	4.04	2.6
				110
				120
				125
				130	252	202
				140
				150
				160	302	242

Note:

1. Nominal torque at a rotational speed of n = 100 r/min. Calculated value when the shaft inclination angle is 0°.

2. The short-term overload torque generated during starting and braking (Tmax) is 3 times the normal torque (Tn), and the duration must not exceed 15 seconds.

Zhongye Heavy Industry Technology (Zhenjiang) Co., Ltd.

Zhongye Heavy Industry Technology (Zhenjiang) Co., Ltd. is located in a well-known ancient city, Zhenjiang. We are an enterprise integrating R & D, manufacturing, and sales. As a famous China Ball Cage/Retainer/Drive Coupling Manufacturers and Constant Velocity Coupling/CV Coupling Suppliers, our products are widely used in metallurgical equipment, mining equipment, water equipment, lifting equipment, paper equipment, port equipment and other industries.
Our main products are toothed coupling, elastic sleeve column pin coupling, elastic column pin coupling, gear coupling with elastic pin, a universal coupling, tire coupling, jaw coupling, star coupling, diaphragm coupling, drum coupling and grid coupling, the Oldham coupling, flange coupling, clip shell coupling, GL type roller chain coupling and a safety coupling, and so on. Our company also undertakes a variety of non-standard coupling designs and manufacturing.
New workshop covers an area of about 16463.52m². heavy workshop 5,500 M2, Precision workshop 4,600m², office building and the gymnasium 2000 M2, Dinning hall 500m², Warehouse 1000m², Roads, greening, parking areas 3563 M2.

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