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Help CenterHigh Torque Coupling Used in Industrial Robot Arm Joints 100Nm 4000RPM Maintenance-Free
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Welcome to Henan San Kuang Machinery Technology Co., Ltd. — a trusted manufacturer established in 2014, with a modern factory spanning 10,000–30,000 square meters and an annual export value ranging from US$2.5 Million to US$5 Million. Our company is dedicated to delivering precision components for industrial automation, and our High Torque Coupling Used in Industrial Robot Arm Joints (100Nm, 4000RPM, Maintenance-Free) is a prime example of our commitment to quality and performance. This coupling is engineered to meet the rigorous demands of robotic joints, offering exceptional torque transmission, high-speed capability, and zero maintenance, ensuring uninterrupted operation in critical applications.
With over 8 years of experience in machinery manufacturing, we serve a global clientele across North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major Chinese ports including Shanghai, Lianyungang, Qingdao, and Tianjin. The following detailed description will walk you through the technical features, benefits, and why this coupling is the ideal choice for your robotic arm joints.
Key Features & Technical Specifications
- High Torque Capacity (100 Nm): Designed to handle heavy loads in robot arm joints, ensuring reliable power transmission even under peak stress.
- High Speed Rating (4000 RPM): Suitable for high-speed rotation applications, maintaining balance and reducing vibration.
- Maintenance-Free Design: Lubricated and sealed for life, eliminating the need for periodic greasing or adjustment — reduces downtime and total cost of ownership.
- Zero Backlash: Precision-machined components ensure minimal angular or torsional play, critical for accurate positioning in robotic arms.
- Compact & Lightweight: Optimized geometry to fit into tight joint spaces without compromising strength.
- Corrosion Resistance: Surface treatment options (e.g., black oxide, zinc plating) available for harsh environments.
- Customizable Dimensions: Bore sizes, keyways, and overall length can be tailored to specific robot arm designs (upon request).
- High Torsional Stiffness: Minimizes torsional wind-up, improving response time and accuracy of the robot arm.
Below is a table summarizing the primary technical parameters:
| Parameter | Value | Notes |
| Rated Torque | 100 Nm | Peak torque 150 Nm (momentary) |
| Maximum Speed | 4000 RPM | Speed limited by dynamic balance |
| Backlash | Measured at output without load | |
| Torsional Stiffness | 1.2 × 10⁴ Nm/rad | High stiffness for precise motion |
| Operating Temperature | -20°C to +80°C | Wider range available on request |
| Material | Alloy Steel (20CrMnTi) | Carburized & hardened |
| Lubrication | Grease-filled, sealed | Maintenance-free lifetime |
| Weight | Approx. 0.8 kg | Varies with customization |
Why Choose This Coupling for Your Robot Arm Joints?
Industrial robot arms require components that can withstand repetitive high-load cycles while maintaining accuracy. This coupling addresses those needs with the following benefits:
- Enhanced Productivity: Maintenance-free operation reduces machine downtime — no need for scheduled lubrication stops.
- Improved Accuracy: Zero-backlash design ensures repeatable positioning, which is critical for pick-and-place, welding, or assembly tasks.
- Long Service Life: Premium alloy steel with heat treatment and sealed lubrication provides a lifespan exceeding 10,000 hours under rated conditions.
- Easy Integration: Compact dimensions and multiple bore options (6–25 mm standard) simplify mounting into existing robot joint designs.
- Vibration Damping: The coupling’s structure absorbs minor misalignments and vibrations, protecting adjacent components like motors and reducers.
- Global Compliance: Manufactured under ISO9001 quality management system and ISO14000 environmental standards, ensuring consistent quality.
Trusted by Global Industries
Henan San Kuang Machinery Technology Co., Ltd. has been a reliable partner for automated production lines since 2014. With a dedicated team of 51–100 employees and an annual export value of US$2.5–5 Million, we have successfully delivered couplings to clients in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and other regions. Our products are backed by multiple certifications including ISO9001, ISO14000, OHSAS18001, HACCP, TL900, QS9000, SA8000, ISO10441, ISO16949, TS16969, ISO19011:2000, and ISO17799. These certifications reflect our commitment to quality, safety, and environmental responsibility.
We understand that every robotic application has unique requirements. That’s why we offer customization options — whether you need a different bore size, keyway type, or special coating, our engineering team can modify the design to fit your exact specifications. Additionally, we provide technical support and samples for evaluation before mass production.
Ready to upgrade your robot arm joints with a high-performance, maintenance-free coupling? Contact us today for a quote or more information. Our sales team, based in Luoyang, Henan, China, is ready to assist you with fast shipping from the Port of Shanghai, Port of Lianyungang, Port of Qingdao, or Port of Tianjin. Experience the reliability and precision that thousands of customers worldwide trust.
Frequently Asked Questions
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Q: What is the maximum torque this coupling can handle briefly?
A: The coupling is rated for 100 Nm continuous. It can withstand up to 150 Nm for short periods (e.g., during acceleration or emergency stops) without damage. For repeated peak loads, we recommend consulting our engineering team for a custom solution.
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Q: Can I use this coupling in a washdown or corrosive environment?
A: The standard version is made of alloy steel with black oxide finish. For corrosive environments, we offer optional coatings such as zinc plating, nickel plating, or stainless steel material. Please specify your environment when ordering.
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Q: Does the coupling require any maintenance over its lifetime?
A: No. The coupling is pre-lubricated with high-quality grease and sealed with double-lip seals. It is designed for maintenance-free operation under normal operating conditions (temperature, speed, load). No re-greasing or adjustment is needed.
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Q: What bore sizes are available for this coupling?
A: Standard bore sizes range from 6 mm to 25 mm in diameter, with keyway options per DIN 6885. Non-standard bores and custom keyways are available upon request with a minimum order quantity.
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Q: How do I ensure proper alignment when installing the coupling?
A: The coupling can tolerate slight angular and parallel misalignment (up to 0.2° and 0.1 mm, respectively). For optimal performance and longest life, we recommend aligning within these limits using a dial indicator or laser alignment tool.
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Q: What is the typical lead time for ordering?
A: For standard sizes, lead time is 7–15 working days after order confirmation. Customized orders may take 15–30 working days. We also offer express shipping for urgent requirements.
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Q: Do you provide samples for testing?
A: Yes, we offer samples for evaluation. The sample cost and shipping are negotiable, and we can refund the sample fee for mass orders. Contact our sales team to discuss the details.
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Q: Which quality standards does this coupling comply with?
A: Our manufacturing process is certified under ISO9001, ISO14000, and OHSAS18001. The coupling itself is designed to meet ISO10441 (flexible coupling) and ISO16949 (automotive quality) standards. We also hold other certifications as listed on our company profile.
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