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Welcome to Hebei Speed Torque Transmission Technology Co., Ltd. – your reliable partner in precision power transmission solutions. Since 2017, we have specialized in manufacturing high-performance couplings, serving clients across North America, Europe, Southeast Asia, and beyond. Our High-Precision Flexible Mechanical Pinion Gear Coupling with Nylon Sleeve is engineered to deliver exceptional torque transmission while compensating for minor misalignments, reducing vibration, and extending equipment life. With a factory spanning 3,000–5,000 square meters and ISO9001 certification, every coupling is produced under strict quality control to ensure durability and consistency.
This coupling combines a robust steel pinion gear design with a high-strength nylon sleeve, providing both flexibility and longevity. The precision-machined gear teeth ensure backlash-free operation, while the nylon sleeve accommodates angular, parallel, and axial misalignments without sacrificing torque capacity. Ideal for use in conveyors, pumps, compressors, and general industrial machinery, this coupling is a cost-effective solution for applications requiring reliable power transmission under dynamic loads.
Key Features & Benefits
- High Precision: Gear teeth are cut with tight tolerances (ISO 6-7 grade) to minimize rotational play and ensure accurate positioning.
- Flexible Design: The nylon sleeve acts as a flexible element, absorbing shock loads and damping vibration, reducing stress on connected components.
- Easy Installation: Two-piece split hub design allows quick assembly without moving the connected equipment. No special tools required.
- Maintenance-Free: Nylon sleeve requires no lubrication, reducing downtime and maintenance costs.
- Corrosion Resistant: Surface treatment options (black oxide, zinc plating, or custom coating) protect against harsh environments.
- Compact & Lightweight: Compared to traditional all-metal couplings, the nylon sleeve reduces overall weight by up to 30%, making it suitable for high-speed applications.
- Customizable: Available in various bore sizes, keyways, and overall dimensions to match your specific shaft configurations.
Technical Specifications
| Parameter | Value Range |
|---|---|
| Material (Hub) | Carbon Steel / Alloy Steel (optional stainless steel) |
| Material (Sleeve) | Nylon 6 / Nylon 66 (PA6/PA66) |
| Bore Diameter | 10 mm – 80 mm (custom up to 120 mm) |
| Maximum Torque | 50 Nm – 5000 Nm (depending on size) |
| Maximum Speed | 6000 RPM (with dynamic balancing optional) |
| Misalignment Capacity | Angular: ≤ 2° Parallel: ≤ 0.5 mm Axial: ≤ ±1.5 mm |
| Temperature Range | -20°C to +80°C (higher temperature nylon available) |
| Backlash | ≤ 0.1° (zero-backlash option available upon request) |
Why Choose Our Coupling?
The high-precision flexible pinion gear coupling with nylon sleeve offers a unique balance of accuracy and flexibility. Traditional all-metal couplings transmit vibration and require precise alignment; our design dampens shock loads and tolerates typical installation misalignments, reducing wear on bearings and seals. The nylon sleeve also acts as an electrical insulator, preventing galvanic corrosion between dissimilar metal shafts.
Compared to elastomeric jaw couplings, our gear coupling provides higher torque density and longer service life under continuous operation. The pinion teeth are hardened to HRC 45-50 for wear resistance, while the nylon sleeve is reinforced with glass fiber for enhanced strength and dimensional stability. This combination makes it ideal for servo drives, printing presses, packaging machinery, and conveyor systems.
Company Trust & Quality Assurance
At Hebei Speed Torque Transmission Technology Co., Ltd., quality is our priority. With annual export value exceeding US$5 million and a team of 101–200 skilled employees, we have supplied couplings to over 40 countries including Germany, USA, Brazil, and Australia. Our factory is ISO9001 certified, and every coupling undergoes 100% dimensional inspection and torque testing before shipment. We also offer flexible logistics via Shanghai, Tianjin, or Qingdao ports, ensuring fast delivery to any global destination.
Our experienced engineers can help you select the right size and custom options (bore size, keyway, special coating) for your application. We provide a 12-month warranty against manufacturing defects and free technical support throughout the product lifecycle. Contact us today to request a quote or sample – let us be your trusted partner in power transmission.
Frequently Asked Questions (FAQ)
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1. What is the maximum misalignment this coupling can handle?
The coupling accommodates angular misalignment up to 2°, parallel offset up to 0.5 mm, and axial movement up to ±1.5 mm. For larger misalignments, please contact our engineering team for a custom solution. -
2. Does the nylon sleeve wear out over time?
The nylon sleeve is designed for long life under normal operating conditions. It is resistant to fatigue and can be replaced separately if needed, extending the overall coupling life. -
3. Can this coupling be used in high-temperature environments?
Standard nylon sleeve operates from -20°C to +80°C. For applications up to 150°C, we offer a special high-temperature nylon or optional polyimide sleeve. -
4. Is lubrication required?
No, the nylon sleeve is self-lubricating and maintenance-free. However, the steel gear teeth may benefit from initial grease lubrication in heavy-duty applications – optional grease fittings can be added. -
5. What bore sizes and keyways are available?
Standard bore range is 10 mm to 80 mm with metric or inch keyways. Custom bores up to 120 mm and splined hubs are available upon request. -
6. How do I ensure the coupling is properly aligned during installation?
A simple alignment procedure using a straightedge and feeler gauge is recommended. For high-speed applications, laser alignment is advised. We provide installation instructions with every order. -
7. What is the warranty period?
We offer a standard 12-month warranty from the date of shipment against material and workmanship defects. -
8. Can I get a sample before bulk order?
Yes, sample orders are welcome. Lead time for samples is typically 7–15 working days, and mass production lead time is 15–30 days depending on quantity and customization.
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