SWC-WD Non-Telescopic Short Universal Joint Coupling – Integral Fork Head, 12.5-1000 kN·m for Heavy Industry

Factory Direct | 42CrMo / 40Cr Alloy Steel | Integral Forged Fork Head | 12.5-1000 kN·m Nominal Torque | 15-25° Axis Angle | Short Non-Telescopic Welding Type | Flange Connection | Painting Finish | OEM Customizable

The Apexcoupling SWC-WD series is a non-telescopic short type universal joint coupling (cardan shaft) designed for reliable power transmission in heavy industrial applications where axial space is limited and telescopic stroke is not required. Featuring an integral forged fork head without bolt connections, this coupling delivers superior structural strength, reliability, and extended service life. With 15-25° angle compensation capability, high transmission efficiency (98-99.8%), and robust alloy steel construction (42CrMo / 40Cr), the SWC-WD is the ideal solution for steel rolling mills, mining equipment, conveyors, paper machinery, crushers, ship drives, and general industrial drives.

The WD type (non-telescopic short type) is specifically designed for installations where axial space is at a premium and no telescopic movement is required. The short, compact design reduces weight by approximately 15% compared to telescopic models while maintaining full torque capacity. The SWC-WD series is manufactured to JB/T5513-1991 / JB/T5513-2006 standards.

✅ Integral forged fork head – no bolt connections, eliminates bolt loosening and breakage. Short, non-telescopic design – compact and lightweight, ideal for space-constrained installations. 15-25° axis angle compensation – accommodates significant misalignment. 98-99.8% transmission efficiency – energy-saving operation. Flange connection – secure and reliable mounting. JB/T5513-1991 / JB/T5513-2006 compliant. Premium forged steel construction – superior strength and durability.

SWC-WD Series – Key Technical Specifications (JB/T5513-1991 / JB/T5513-2006)

📐 Additional sizes (SWC680WD, SWC720WD, SWC800WD) and custom dimensions available upon request. Contact our engineering team for custom sizing.

SWC-WD Series – Available Models

📐 Non-standard sizes available upon request. Contact our engineering team for custom sizing.

Product Structure & Components

1. Integral Forged Fork Head – One-piece construction without bolt connections – eliminates bolt loosening and breakage, the most common failure point in traditional universal joints. The SWC series uses an integral fork structure where bearings are fixed without bolts, avoiding loose bolt breakage and simplifying maintenance. This design offers 30-50% longer service life than bolt-connected designs.

2. Cross Shaft Assembly (Spider) – Precision cross shaft with multi-row needle roller bearings for high wear resistance and strength. Equipped with grease fittings for easy lubrication.

3. Short Non-Telescopic Shaft – The WD type is a short, non-telescopic design with no axial stroke. Compared to telescopic models, it reduces weight by approximately 15% while maintaining full torque capacity, making it ideal for space-constrained installations.

4. Flange Connection – Standard flange mounting with bolt holes as specified in the table above.

5. Alloy Steel Construction – 42CrMo or 40Cr with quenching process – high strength and durability. Raw blanks are refined via quenching and tempering, while spline shafts undergo intensive induction hardening.

💡 How it works: The SWC-WD cardan shaft uses an integral fork head design that eliminates the weak link of bolt compression bearing seats, completely avoiding common malignant damage caused by bolt loosening or breaking. Torque is transmitted through the cross shaft assembly, while the short non-telescopic design provides a compact solution for installations with limited axial space. The flange connection provides secure mounting to driven equipment. The SWC type offers greater angle compensation capability (15-25°) compared to SWP type (~10°).

SWC-WD vs Other SWC Types – Quick Comparison

💡 WD (Non-Telescopic Short Type) is the ideal choice for applications where axial space is limited and no telescopic stroke is required. The short, compact design reduces weight by approximately 15% compared to telescopic models while delivering the same torque capacity.

Key Features & Advantages

Applications

The SWC-WD non-telescopic short cardan shaft is widely used across heavy industrial sectors where compact design and high torque capacity are required:

• Steel Rolling Mills – Main drive and auxiliary transmissions where axial space is limited

• Mining Equipment – Conveyors, crushers, feeders

• Paper Machinery – Paper production and finishing

• Ship Drives – Marine propulsion auxiliary systems

• Cranes & Hoists – Heavy-duty lifting and material handling

• Construction Machinery – Heavy equipment drives

• Metallurgical Equipment – Continuous casting lines

• Agricultural Machinery – Farm equipment and harvesters

• Petroleum Equipment – Oil and gas machinery

• Pump Equipment – Large-scale industrial fluid pumps

• Rubber Machinery – Rubber processing equipment

• Heavy-Duty Conveyor Systems – Material handling in demanding environments

Why Choose Apex Coupling for SWC-WD Cardan Shafts?

Customization Options

FAQ

Q: What is an SWC-WD cardan shaft?
A: The SWC-WD is a non-telescopic short type universal joint drive shaft with an integral fork head design. It transmits torque between shafts that are not collinear, with angle compensation up to 25°. The “WD” designation indicates non-telescopic short type – a compact design with no axial stroke, ideal for space-constrained installations.

Q: What is the advantage of the integral fork head design?
A: The integral fork head eliminates bolt connections, which are a common failure point in traditional universal joints. This significantly improves structural strength, reliability, and service life by approximately 30%.

Q: What is the advantage of the short non-telescopic design?
A: The WD type is a short, compact design with no telescopic stroke. Compared to telescopic models, it reduces weight by approximately 15% while maintaining full torque capacity, making it ideal for installations where axial space is limited.

Q: What is the maximum operating angle?
A: The SWC-WD offers 15-25° axis angle compensation – significantly larger than the SWP type (~10°). For continuous operation, we recommend ≤15° for optimal bearing life.

Q: What is the transmission efficiency?
A: The transmission efficiency reaches 98-99.8% – providing significant energy savings for high-power transmission applications.

Q: What materials are used?
A: The coupling is manufactured from 42CrMo or 40Cr alloy steel with a quenching process for high strength and durability. All blanks undergo quenching and tempering, with spline shafts induction-hardened.

Q: What is the torque and speed range?
A: Nominal torque ranges from 12.5 kN·m to 1000 kN·m depending on the model. Maximum speed is up to 4000 RPM. Speeds above 1000 RPM require dynamic balancing.

Q: What standard is this coupling manufactured to?
A: The SWC-WD series is manufactured to JB/T5513-1991 / JB/T5513-2006 standards.

Q: What industries is this coupling suitable for?
A: Steel rolling mills, mining, conveyors, paper machinery, ship drives, crushers, construction machinery, agricultural equipment, petroleum machinery, and general industrial applications.

Q: Does the coupling require balancing?
A: For high-speed applications (above normal operating speeds), dynamic balancing is recommended. Please specify when ordering.

Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom lengths, telescopic strokes, flange interfaces, materials, and finishes.

Q: What is the warranty?
A: 1 Year – quality assured.

Request a Quote

Send us your required specifications (model, length, flange interface), quantity, and any customization requirements. Our engineers will provide a quotation within 24 hours.