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Oldham Couplings Manufacturers

An Oldham coupling is a compact, three-piece mechanical connector for parallel shafts, featuring two outer hubs with slots and a central floating disc with perpendicular tongues that slide in these slots, allowing it to transmit torque while absorbing significant lateral (parallel) misalignment without backlash, commonly used in printing, packaging, and semiconductor machines for smooth, backlash-free power transfer. 

How it works:

Three Parts: It has two end hubs (connected to shafts) and a middle floating disc (coupler).

Tongue & Groove: Each hub has a slot; the center disc has a tongue on one side fitting into a slot on one hub, and another tongue on the opposite side fitting into the other hub's slot, with the tongues at 90 degrees.

Sliding Motion: As shafts rotate, the tongues slide within their respective slots, allowing the center disc to move laterally (sideways), accommodating misalignment.

Power Transmission: Power is transmitted through the sliding action, ensuring smooth, constant-velocity power transfer even with parallel shaft offset. 

Key Features:

High Misalignment: Excellent for significant parallel (lateral) misalignment.

Zero Backlash: Provides backlash-free, precise motion, crucial for accurate positioning.

Compact & Easy: Simple design, easy to assemble, and compact.

Wear Element: The center disc is a wear part, requiring periodic replacement in high-use applications. 

Common Uses:

Automation & Robotics

Printing & Packaging Machines

Semiconductor Manufacturing

Scroll Compressors (to prevent orbiting scroll rotation). 

About Rokang
Jiangsu Rokang Heavy Industry Technology Co., Ltd.
Jiangsu Rokang Heavy Industry Technology Co., Ltd. has fixed assets of more than 80 million yuan, and has a team of professional talents in mechanical design, precision manufacturing, heat treatment, welding, etc.; the company has a one-stop complete set of processing facilities and a series of quality inspection systems such as measurement, physical and chemical, and dynamic testing, and has a comprehensive mechanical processing capability. Oldham Couplings Manufacturers and Oldham Couplings Factory in China. For many years, the company has been committed to the research and development and manufacturing of ball cage type constant velocity universal couplings, cross shaft type universal couplings, and drum gear couplings. It has carried out close industry-university-research cooperation with military and local scientific research institutes and Power Engineering Department of PLA Naval Academy, and has continuously expanded into the fields of precision, heavy load and high speed. The products have successfully replaced foreign famous brand products with excellent performance, and the process technology has reached the international advanced level. It has been widely used in lifting and transportation, metallurgical machinery, metal rolling, engineering machinery, mining machinery, petrochemical, textile machinery, military ships, armored vehicles, railway locomotives, special vehicles and other fields. The product quality and service have been recognized and praised by the majority of users, and are exported to Europe, America, Russia, the Middle East, India and other countries and regions. In recent years, the company has been committed to the in-depth research and development of ball cage constant velocity universal couplings, and has successively developed ball cage constant velocity universal couplings for screw pumps, ball spline ball cage constant velocity universal couplings, coaxial double-speed, and double-way ball cage constant velocity universal couplings. Custom Oldham Couplings. It fundamentally solves the new problems that users currently encounter during use. The company has always adhered to the business purpose of "quality first, honest management, and customer first". We are willing to work with you with excellent products, preferential prices and thoughtful services to create a brilliant career!

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Industry knowledge

Overview of Oldham Couplings

An Oldham coupling is a compact mechanical connector used to transmit torque between parallel shafts while accommodating significant lateral misalignment. Its unique three-piece design—two end hubs and a central floating disc—enables smooth, constant-velocity torque transfer without backlash, making it ideal for precision machinery in industries such as printing, packaging, and semiconductor manufacturing.

How Oldham Couplings Work

The coupling consists of three components: two outer hubs connected to the shafts and a central floating disc. Each hub has a slot, while the center disc has perpendicular tongues that fit into the hub slots. As the shafts rotate, these tongues slide within their respective slots, allowing the disc to move laterally and absorb parallel shaft misalignment.

Key Features

  • High Misalignment Compensation: Can handle substantial parallel shaft offset without stress.
  • Zero Backlash: Ensures precise, backlash-free motion.
  • Compact and Simple: Easy to assemble, maintain, and integrate into machines.
  • Replaceable Wear Element: The center disc protects other components and can be periodically replaced.

Applications of Oldham Couplings

Oldham couplings are widely used in industries requiring precise and reliable power transmission. Typical applications include:

  • Automation and robotics
  • Printing and packaging machines
  • Semiconductor manufacturing equipment
  • Scroll compressors to prevent orbiting scroll rotation

Technical Advantages

Oldham couplings provide several technical benefits that make them indispensable in precision machinery:

Feature Benefit
Lateral Misalignment Tolerance Reduces stress on shafts and bearings, extending machinery life
Backlash-Free Motion Supports precise positioning and accurate control
Replaceable Center Disc Cost-effective maintenance and longevity of the coupling
Compact Design Easy integration into constrained mechanical assemblies

About Jiangsu Rokang Heavy Industry Technology Co., Ltd.

Jiangsu Rokang Heavy Industry Technology Co., Ltd. is a leading manufacturer of Oldham couplings and other precision couplings in China. With fixed assets exceeding 80 million yuan, the company has a professional team skilled in mechanical design, precision manufacturing, heat treatment, welding, and more. Equipped with a complete set of processing facilities and advanced quality inspection systems—including measurement, physical and chemical, and dynamic testing—Rokang offers comprehensive mechanical processing capabilities.

For many years, Rokang has focused on the research, development, and production of ball cage type constant velocity universal couplings, cross shaft type universal couplings, drum gear couplings, and custom Oldham couplings. The company collaborates closely with military and local research institutes, as well as the Power Engineering Department of the PLA Naval Academy, advancing into precision, heavy-load, and high-speed applications.

Rokang’s products have successfully replaced foreign brands with internationally advanced performance standards. They are widely used in lifting and transportation, metallurgical machinery, engineering and mining equipment, petrochemical and textile machinery, military vehicles, railway locomotives, and more. The company exports its products to Europe, America, Russia, the Middle East, India, and other regions.

In recent years, Rokang has developed innovations such as ball cage constant velocity couplings for screw pumps, ball spline couplings, coaxial double-speed couplings, and double-way ball cage couplings, addressing modern user challenges. The company operates under the principles of quality first, honest management, and customer priority, providing excellent products, competitive pricing, and dedicated service to clients worldwide.