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Help CenterCombined Spline Telescopic Universal Coupling Welded Cross-Axis Joint for Heavy Machinery
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Hebei Speed Torque Transmission Technology Co., Ltd. proudly presents our premium Combined Spline Telescopic Universal Coupling Welded Cross-Axis Joint – a robust transmission solution engineered for the most demanding heavy machinery applications. With our factory spanning 3,000–5,000 square meters and a dedicated team of 101–200 professionals, we have been manufacturing high-performance mechanical power transmission components since 2017. Our ISO9001 certified production process ensures every coupling delivers exceptional durability, precise torque transmission, and easy maintenance. Whether you are in mining, metallurgy, shipbuilding, or large-scale industrial equipment, this universal coupling is built to handle extreme loads and misalignment with outstanding reliability.
The core design of this coupling integrates a spline telescopic shaft with a welded cross-axis joint, providing both axial compensation and angular flexibility. The spline section allows for smooth length adjustment during operation, while the welded cross-axis joint (universal joint) accommodates angular misalignment up to 25° (customizable). This combination significantly reduces stress on connected equipment, prolongs service life, and simplifies installation in confined spaces.
Key Features & Technical Specifications
- High Torque Capacity: Manufactured from selected alloy steel, heat-treated for maximum strength and wear resistance. Torque rating can be tailored from 500 Nm up to 50,000 Nm or higher upon request.
- Telescopic Spline Design: Provides axial displacement compensation (typically 50–300 mm) without affecting torque transmission. The spline teeth are precision machined to ensure smooth sliding and minimal backlash.
- Welded Cross-Axis Joint: Heavy-duty forged cross journal with needle bearings, sealed for life or relubricable options. The welded connections (to flanges or shafts) offer a permanent, rigid assembly that withstands shock loads.
- Versatile Configurations: Available with different connection types – flange, keyed shaft, or splined shaft ends – to match your equipment interface. Both single and double universal joint versions are possible.
- Customizable Dimensions: Overall length, spline travel, flange hole patterns, and cross journal size can all be adapted to your specific heavy machinery requirements.
- Surface Protection: Standard phosphating or industrial paint (color can be specified). Optional anti-corrosion coating for harsh environments.
| Parameter | Value Range |
| Max Angular Misalignment | ≤25° (customizable) |
| Telescopic Travel | 50 – 500 mm (as per design) |
| Torque Rating | 500 – 50000 Nm (higher possible) |
| Material Grade | 40Cr / 42CrMo / 20CrMnTi (or equivalent) |
| Surface Hardness | HRC 58–62 (spline teeth) |
| Operating Temperature | -20°C ~ +80°C (extended range optional) |
Benefits for Your Heavy Machinery
- Reduced Downtime: The spline telescopic feature allows easy installation and maintenance without removing adjacent equipment.
- Enhanced Equipment Life: By effectively absorbing shock loads and misalignments, the coupling protects bearings, seals, and gearboxes from premature failure.
- Energy Efficiency: Low friction needle bearings in the cross joint minimize power loss, improving overall drive efficiency.
- Versatile Adaptation: Our design team can quickly modify dimensions and connection types to retrofit existing machinery – no need to redesign your whole drive train.
Why Choose Hebei Speed Torque?
Since our establishment in 2017, we have grown into a reliable export supplier with an annual export value of US$5–10 million, serving clients across North America, South America, Europe, Asia, Africa, and Oceania. Our factory occupies 3,000–5,000 square meters and is equipped with advanced CNC machining centers, heat treatment lines, and testing facilities. All our products are manufactured under rigorous ISO9001 quality management, ensuring consistent performance and traceability. With a team of 101–200 skilled workers and engineers, we are capable of delivering large orders on time. We welcome OEM/ODM inquiries and offer free technical consultation to help you select the optimal coupling for your application.
Frequently Asked Questions
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Q: What is the maximum angular misalignment this coupling can handle?
A: The standard welded cross-axis joint can accommodate up to 25° of angular misalignment. For extreme angles, custom designs are available upon request. -
Q: Can the telescopic spline be locked at a fixed length?
A: Yes, we can provide optional locking mechanisms (e.g., set screws or clamping collars) if the application does not require continuous axial movement. -
Q: What lubricant is used in the cross joint?
A: The cross joint comes pre-packed with high-temperature lithium grease. For continuous operation, we recommend relubrication intervals based on load and speed – detailed in our maintenance guide. -
Q: Are these couplings suitable for reversing operations?
A: Yes, the spline and cross joint design are fully reversible. Needle bearings are capable of handling alternating loads. -
Q: Can you provide a coupling with a specific flange pattern?
A: Absolutely. We can machine the flange bolt holes according to your drawing or sample. Just share your interface specifications. -
Q: What is the typical lead time for a standard order?
A: For non-custom units, lead time is around 15–20 days. For fully customized couplings, it may extend to 30 days depending on complexity. We always keep a safety stock of common sizes. -
Q: Do you offer a warranty?
A: Yes, we provide a 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are available for bulk or loyal customers. -
Q: How do I choose the right size coupling for my machinery?
A: Please provide the required torque, RPM, shaft diameters, and misalignment data. Our engineering team will recommend the optimal model. You can also use our online selection tool (contact us for access).
Contact us today for a competitive quotation or technical discussion. Our experienced team is ready to support your heavy machinery transmission needs.
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