WS WSD Cross Axle Universal Couplings with Spider

High-performance WS (double) and WSD (single) cross axle universal couplings designed for robust power transmission. Featuring a durable spider mechanism, these joints accommodate up to 45° axis angles and nominal torque from 11.2 to 1120 N.m. Available in standard and custom bore sizes to perfectly match your industrial applications.

Category: Universal Joint Couplings Tags: cross axle universal coupling, double universal joint, industrial power transmission, single universal joint, universal joint with spider

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Description

Core Product Parameters

Standard: JB/T5901-91
Coupling Types: WSD (Single Cross Axle) & WS (Double Cross Axle)
Maximum Axis Angle (β): ≤ 45°
Nominal Torque Range: 11.2 N.m to 1120 N.m
Bore Diameter Range (d H7): 8mm to 42mm
Outer Diameter Range (D): 16mm to 75mm
Connection Types: Y type (Cylindrical bore) and J1 type (Cylindrical bore with keyway)

Expert Engineering for Reliable Transmission

When engineering robust power transmission systems, selecting the right coupling is paramount to mitigating misalignment and ensuring long-term operational stability. Drawing on decades of specialized experience in industrial drive solutions, we proudly present our standard-compliant WS and WSD series cross axle universal couplings. Designed meticulously to the JB/T5901-91 standard, these couplings offer unparalleled versatility and strength for rotational systems where the two-axis angle (β) is 45 degrees or less.

The integration of a precision-machined spider (cross trunnion) allows these units to transmit significant torque—ranging from an agile 11.2 N.m for precision instrumentation up to a heavy-duty 1120 N.m for demanding industrial machinery. Whether your application requires the compact design of a single joint or the extended angular compensation of a double joint, our comprehensive lineup is engineered to deliver minimal backlash, smooth rotation, and exceptional durability under continuous cyclic loading. To understand how these fit into broader transmission networks, you can explore our complete guide on the universal joint.

Detailed View of WSD Single Cross Axle Universal Coupling

Application Scope & Design Dynamics

The primary function of the WS and WSD series is to provide a seamless mechanical linkage between two shafts that are intentionally or unavoidably misaligned.

WSD Type (Single Joint): Ideal for localized angular misalignment. The single spider design accommodates up to a 45-degree angle, making it highly effective for steering mechanisms, custom machine tools, and specialized automotive testing rigs.
WS Type (Double Joint): Incorporates a central intermediate shaft connecting two spiders. This configuration not only handles angular misalignment but successfully compensates for parallel offset. The WS type ensures a constant velocity ratio between the input and output shafts when installed correctly, drastically reducing vibration in sensitive equipment like printing presses and packaging machinery.

WS WSD series universal coupling multi-angle view

Detailed Basic Parameters and Size Specifications

The table below provides comprehensive dimensional and performance data for our standard WS and WSD product range. Please note that when the axis angle β is not zero, the allowable torque of the coupling should be calculated as [T] = Tn × cos(β). The middle axle dimension L2 for WS types can also be selected and customized based on specific project needs.

WSD Single Universal Joint Dimensional Schematic

WS Double Universal Joint Dimensional Schematic

Type	Nominal Torque Tn (N.m)	d H7	D	L0				L		L2	Weight G (kg)				Rotating inertia (I) kg.m²
				WSD Type		WS Type		Y Type	J1 Type		WSD Type		WS Type		WSD Type		WS Type
				Y Type	J1 Type	Y Type	J1 Type	Y Type	J1 Type		Y Type	J1 Type	Y Type	J1 Type	Y Type	J1 Type	Y Type	J1 Type
WS1 WSD1	11.2	8	16	60 66	- 60	80 86	- 80	20	-	20	0.23	- 0.20	0.32	- 0.29	0.06	- 0.05	0.08	- 0.07
		9						20
		10						25
WS2 WSD2	22.4	10	20	70 84	64 74	96 110	90 100	25	22	26	0.64	0.57	0.93	0.88	0.10	0.09	0.15	0.15
		11						25
		12						32
WS3 WSD3	45	12	25	90	80	122	112	32	27	32	1.45	1.30	2.10	1.95	0.17	0.15	0.24	0.22
WS3 WSD3	45	14	25	90	80	122	112	32	27	32	1.45	1.30	2.10	1.95	0.17	0.15	0.24	0.22
WS4 WSD4	71	16	32	116	82	154	130	42	30	38	5.92	4.86	8.56	0.48	0.39	0.32	0.56	0.49
WS4 WSD4	71	18	32	116	82	154	130	42	30	38	5.92	4.86	8.56	0.48	0.39	0.32	0.56	0.49
WS5 WSD5	140	19	40	144	116	192	164	42	30	48	16.3	12.9	24.0	20.6	0.72	0.59	1.04	0.91
		20						42	30
		22						52	38
WS6 WSD6	280	24	50	152	124	210	182	52	38	58	45.7	36.7	68.9	59.7	1.28	1.03	1.89	1.64
		25		152	124	210	182	52	38
		28		172	136	330	194	62	44
WS7 WSD7	560	30	60	226	182	296	252	82	60	70	148	117	207	177	2.82	2.31	3.90	3.38
		32
		35
WS8 WSD8	1120	38	75	240	196	332	288	112	84	92	396	338	585	525	5.03	4.41	7.25	6.63
		40		300	244	392	336
		42		300	244	392	336

Engineering Advantages & Manufacturing Excellence

The mechanical efficiency of our universal couplings stems from precision engineering of the spider (cross axle) and bore integration. We utilize high-strength alloy steel for the core transmission components, ensuring the couplings resist torsional fatigue even under rapid load reversals.

Precise Torque Transmission: The robust spider block minimizes power loss, delivering torque from 11.2 N.m up to a massive 1120 N.m reliably.
Customizable Connections: Our standard offerings include Y-type (round cylindrical bore) and J1-type (bore with keyway). This ensures compatibility with a vast majority of existing motor and shaft setups.
Optimized Rotational Inertia: By tightly controlling the weight and dimensions, these joints minimize added inertia to your system (e.g., the WS8 model possesses a rotational inertia of just 7.25 kg.m² while supporting huge torque), improving the dynamic response of automated machinery.

GBC Universal Joints Industrial Applications

Marking Example: If you require a WS4 double universal coupling with both ends featuring cylindrical holes (Host ending: Y type axle hole, d=16mm, D=32mm; Moving ending: J1 type, d=18mm, D=32mm), the formal designation is: WS4 coupling Y16 / J118 × 32.

Trusted by Australian Industries

★★★★★

"We integrated the WS6 double cross axle couplings into our heavy-duty agricultural conveyor systems. The ability to handle 280 N.m torque with constant velocity has significantly reduced maintenance downtime. Exceptional build quality from GBC."

— David R., Agricultural Machinery OEM, QLD

★★★★★

"Sourcing custom bore sizes is usually a headache, but GBC supplied WSD4 joints with customized J1 keyways perfectly machined to our specs. They operate flawlessly in our automation robotics under continuous 45-degree angles."

— Sarah L., Automation Solutions, NSW

★★★★★

"Fast delivery to Western Australia. The WS8 couplings we procured for our mining ventilation shafts are incredibly robust. Holding up perfectly against harsh environmental factors and high torsion."

— Mark T., Mining Equipment Supplier, WA

Frequently Asked Questions

1. What is the maximum operating angle these universal couplings can handle?

Both the WS and WSD series are designed to comfortably accommodate an axis angle (β) of up to 45 degrees. However, keep in mind that operating at higher angles naturally reduces the allowable torque, which should be calculated using the formula [T] = Tn × cos(β).

2. Can I request non-standard bore dimensions or keyways?

Absolutely. While our catalog lists standard Y (cylindrical) and J1 (cylindrical with keyway) types, we fully support custom machining. If your shafts have unique diameters or require special locking mechanisms, just send us your drawings.

3. What is the main difference between the WS and WSD models?

The WSD is a single cross axle joint, meaning it has one spider. It is great for simple angular misalignment. The WS is a double cross axle joint featuring two spiders separated by a middle section. The WS type can compensate for both angular and parallel misalignment, offering smoother, constant-velocity transmission.

4. What kind of maintenance is required for the spider mechanism?

Regular lubrication is the key to longevity. Depending on your operational environment and load cycles, the cross axle bearings should be greased periodically. We recommend inspecting the joints during routine maintenance windows to ensure no excessive play has developed.

5. Do you ship directly to project sites in Australia?

Yes! As a dedicated supplier for the Australian market, GBC handles logistics efficiently. Whether you're in Sydney, Melbourne, Perth, or remote mining sites, we coordinate reliable shipping tailored to your project timelines.

GBC: Your Premier Partner in Power Transmission

At GBC, we do more than just supply standard components; we engineer solutions. With state-of-the-art CNC machining centers and stringent quality control protocols, our manufacturing strength guarantees that every coupling meets exact tolerances. We understand that Australian industries face unique, harsh conditions, which is why we offer comprehensive non-standard customization.

Not finding the exact fit in our standard catalog? We specialize in custom-made universal couplings tailored to your specific drawings and samples. From unique materials and protective coatings to specialized bore and flange configurations, our engineering team is ready to assist.

Contact Our Engineering Team Today

Email us directly at: sales@australia-drive.com

High-performance WS (double) and WSD (single) cross axle universal couplings designed for robust power transmission. Featuring a durable spider mechanism, these joints accommodate up to 45° axis angles and nominal torque from 11.2 to 1120 N.m. Available in standard and custom bore sizes to perfectly match your industrial applications.