WJA Spherical Roller Drum Coupling

WJA Drum Coupling is a spherical roller coupling, which is composed of jacket with connecting flange, spherical roller, semi-coupling, inner and outer cover plate and sealing system, capable of transmitting large torque and bearing radial load. The connection between the coupling and the output shaft of the reducer adopts an involute spline pair design.

Model	Nominal Torque Tn kN·m	Allowable Radial Force kN	d	L	D	D₁	D₂	D₃	nxd₁	s	l₁	l₂	l₃	r	c	Wear Scale m1	Rotational Inertia kg·m²	Quality kg
Model	Nominal Torque Tn kN·m	Allowable Radial Force kN	H7	L	D	D₁	h6	D₃	nxd₁	h9	l₁	l₂	l₃	r	c	Wear Scale m1	Rotational Inertia kg·m²	Quality kg
WJA1	5	16.5	40,42,45,48	84	250	220	160	85	10xΦ14	220	42	12	24	2	1.6	4	0.065	12.8
WJA1	5	16.5	50,55	84	250	220	160	85	10xΦ14	220	42	12	24	2	1.6	4	0.065	12.8
WJA2	7.1	18.5	45,48,50,55	84	280	250	180	90	10xΦ14	250	42	12	24	2.5	1.6	4	0.102	16.1
WJA2	7.1	18.5	60	107	280	250	180	90	10xΦ14	250	42	12	24	2.5	2	4	0.102	15.9
WJA3	9	20	48,50,55	84	320	280	200	95	10xΦ18	280	45	15	25	2.5	1.6	4	0.193	21.9
WJA3	9	20	60,65	107	320	280	200	95	10xΦ18	280	45	15	25	2.5	2	4	0.193	21.8
WJA4	14	25	60,65,70,75	107	340	300	220	130	10xΦ18	300	45	15	25	2.5	2	4	0.278	29.8
WJA4	14	25	80,85	132	340	300	220	130	10xΦ18	300	45	15	25	2.5	2	4	0.278	29.5
WJA5	18	35	60,65	107	360	320	240	150	10xΦ18	320	45	15	25	2.5	2	6	0.369	35
WJA5	18	35	80,85,90,95	132	360	320	240	150	10xΦ18	320	45	15	25	2.5	2.5	6	0.369	36.5
WJA6	22.4	38.5	80,85,90,95	132	380	340	260	160	10xΦ18	340	45	15	25	3	2.5	6	0.496	43.3
WJA6	22.4	38.5	100,110	167	380	340	260	160	10xΦ18	340	45	15	25	3	2.5	6	0.496	43.7
WJA7	28	42	80,85,90,95	132	400	360	280	170	10xΦ18	360	47	15	33	3	2.5	6	0.654	53
WJA7	28	42	100,110,120	167	400	360	280	170	10xΦ18	360	47	15	33	3	2.5	6	0.654	52
WJA8	35.5	49	100,110,120	167	420	380	310	200	10xΦ18	380	47	15	33	3	2.5	6	0.95	69
WJA8	35.5	49	130,140	202	420	380	310	200	10xΦ18	380	47	15	33	3	3	6	0.95	67
WJA9	50	70	100,110,120	167	450	400	340	230	10xΦ22	400	52	20	28	3	2.5	6	1.45	89
WJA9	50	70	130,140,150	202	450	400	340	230	10xΦ22	400	52	20	28	3	3	6	1.45	88.5
WJA10	100	120	130,140,150	202	550	500	420	280	10xΦ22	500	60	20	28	3	3	8	3.81	156
WJA10	100	120	160,170,180	242	550	500	420	280	10xΦ22	500	60	20	28	3	3	8	3.81	151
WJA11	160	140	160,170,180	242	580	530	450	300	14xΦ22	530	60	20	28	3	3	8	4.932	184
WJA11	160	140	190,200	282	580	530	450	300	14xΦ22	530	60	20	28	3	4	8	4.932	181
WJA12	224	170	190,200,220	282	650	600	530	360	14xΦ22	580	65	25	33	3	4	8	9.09	267
WJA12	224	170	240,250	330	650	600	530	360	14xΦ22	580	65	25	33	3	4	8	9.09	247
WJA13	255	300	200,220	282	680	630	560	400	26xΦ22	600	65	25	35	4	4	8	12.1	319
WJA13	255	300	240,250,260	330	680	630	560	400	26xΦ22	600	65	25	35	4	4	8	12.1	311
WJA14	500	340	240,250,260	330	710	660	600	440	26xΦ26	640	82	35	43	4	4	8	18.2	4.3
WJA14	500	340	280,300	380	710	660	600	440	26xΦ26	640	82	35	43	4	5	8	18.2	394
WJA15	630	380	240,250,260	330	780	730	670	500	26xΦ26	700	82	35	43	4	4	8	29.4	544
WJA15	630	380	280,300,320	380	780	730	670	500	26xΦ26	700	82	35	43	4	5	8	29.4	560
WJA16	710	450	280,300,320	380	850	800	730	550	26xΦ26	760	82	35	43	4	5	8	44	693
WJA16	710	450	340,360,380	450	850	800	730	550	26xΦ26	760	82	35	43	4	6	8	44	664

The WJA drum coupling is a crucial component used in transmission systems, particularly playing a significant role in the hoisting mechanism of cranes.

The WJA barrel coupling is primarily composed of an outer sleeve, spherical rollers, a half-coupling, an inner cover, and an outer cover. These components, through precise design and manufacturing, ensure that the coupling can efficiently transmit torque and withstand radial loads.

The WJA drum coupling transmits torque through spherical rollers and can withstand significant radial forces. Its unique spherical roller design enables the coupling to have an automatic self-aligning function, which can effectively compensate for the angular deviation between the reducer output shaft and the drum axis, thereby improving the stability and reliability of equipment operation.

The WJA barrel coupling offers a range of models, including WJA1, WJA2, WJA3, etc., to cater to the needs of various transmission systems. Each model features specific parameters such as nominal torque, allowable radial force, and shaft hole specifications.

WJA drum couplings are widely used in heavy-duty machinery and equipment in various industries such as metallurgy, mining, petroleum, paper making, glass, textile, packaging, printing, building materials, and chemical engineering. Especially in the connection between the reducer and the drum of the crane lifting mechanism, WJA drum couplings have become an indispensable transmission component due to their excellent performance and reliability.

Advantages and Features

Efficient transmission: Torque is transmitted through spherical rollers, achieving high transmission efficiency.
Strong bearing capacity: Capable of withstanding large radial forces and torques, suitable for heavy-duty machinery and equipment.
Self-aligning: The unique spherical roller design enables the coupling to have a self-aligning function, which can effectively compensate for angular deviations.
Good stability: It can maintain stable transmission performance under various working conditions, improving the reliability of the equipment.
Wide range of applications: It is widely used in multiple industries and fields, meeting the needs of different transmission systems.

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