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Help CenterFlexible Standard Mechanical Jaw Coupling for Paper Industry Applications
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Hebei Speed Torque Transmission Technology Co., Ltd., established in 2017 with a factory spanning 3,000–5,000 square meters and a team of 101–200 experienced professionals, has been dedicated to manufacturing high-performance transmission components for global markets. Our Flexible Standard Mechanical Jaw Coupling for Paper Industry Applications is engineered to meet the rigorous demands of continuous paper production lines, where reliability, misalignment compensation, and vibration damping are critical. With an annual export value exceeding US$5 million, we supply this coupling to customers across North America, South America, Europe, and Asia, ensuring consistent quality and on-time delivery. This jaw coupling combines a standard mechanical design with flexible elastomeric spider elements, providing a cost-effective solution for connecting motors and driven equipment in paper mills, converting machines, and pulp handling systems.
Key Features & Technical Specifications
- Flexible spider insert – Absorbs shock loads, dampens vibration, and compensates for angular, parallel, and axial misalignment up to 1°–3° (angular) and 0.5–1.5 mm (parallel), protecting connected equipment from premature wear.
- Standard mechanical design – Complies with industry-standard dimensions (e.g., DIN 116, ISO 1462), allowing easy interchangeability with other jaw couplings of similar size.
- High torque capacity – Available in multiple sizes with torque ratings from 50 Nm to 5000 Nm, suitable for typical paper machine drives, rollers, and conveyors.
- Customizable bore and keyway – Bore diameters can be machined from 10 mm to 100 mm (or larger upon request), with keyway options per customer specifications.
- Wide operating temperature range – Standard spider material (polyurethane) works from -30°C to +80°C; optional Hytrel or NBR spiders extend range to -40°C to +120°C.
- Maintenance-friendly – The spider insert can be replaced without moving the hubs, reducing downtime during service.
| Parameter | Value |
|---|---|
| Material (Hub) | 45# steel (high-strength), Cast iron (optional) |
| Spider Hardness | Shore A 80–95 (standard), Shore A 60–75 (soft, for high damping) |
| Max. Speed | Up to 6000 rpm (depending on size and balance grade) |
| Misalignment Compensation | Angular: ≤3°, Parallel: ≤1.5 mm, Axial: ≤0.5 mm |
| Balance Grade | G6.3 (standard), G2.5 (optional for high-speed applications) |
| Certification | ISO9001:2015 |
Advantages for Paper Industry Applications
- Minimizes vibration transmission to sensitive paper rolls and dryer drums, improving product quality and reducing web breaks.
- Handles the frequent start-stop cycles and torque spikes common in paper machine helper drives without fatigue failure.
- Resists moisture, paper dust, and mild chemical exposure (spider material dependent), ensuring long service life in harsh mill environments.
- Easy to install with standard bolt-on hubs; no special tools required for assembly.
Why Choose Hebei Speed Torque?
With over 7 years of experience in power transmission manufacturing, we operate a 3,000–5,000 m² factory equipped with CNC machining centers and dynamic balancing machines. Our team of 101–200 skilled workers ensures each coupling is inspected for dimensional accuracy and hardness. We export to 14+ markets worldwide, with annual export value reaching US$5–10 million. Our ISO9001:2015 certification guarantees consistent quality management from raw material sourcing to final packaging. All products are shipped from the ports of Shanghai, Tianjin, or Qingdao with professional packing for ocean freight. We welcome OEM/ODM orders and are ready to provide custom sizes, special coatings, or alternative spider materials to meet your exact requirements. Contact us today for a quote or technical consultation – your paper production lines deserve reliable coupling solutions.
Frequently Asked Questions
-
Q: What is the maximum misalignment this coupling can handle?
A: The standard flexible jaw coupling compensates for angular misalignment up to 3°, parallel misalignment up to 1.5 mm, and axial displacement up to 0.5 mm. For larger misalignment requirements, we can recommend a different coupling type or special spider material. -
Q: Can I replace the spider insert without removing the hubs?
A: Yes, the design allows you to axially slide the hubs apart to access the spider. This minimizes downtime during maintenance. -
Q: Is this coupling suitable for high-speed paper machine rolls?
A: Yes, our coupling can operate at speeds up to 6000 rpm. For high-speed applications, we recommend choosing a dynamically balanced version (G2.5 grade). -
Q: What spider materials are available?
A: Standard is polyurethane (Shore A 80–95). Optional: NBR (oil-resistant, -20°C to +100°C), Hytrel (high temperature, -40°C to +120°C), and soft polyurethane for extra damping. Contact us for other materials. -
Q: Do you offer custom bore sizes and keyways?
A: Absolutely. We can machine bores from 10 mm to 100 mm (or larger) and keyways per your drawing. Minimum order quantity may apply for custom sizes. -
Q: What is the typical lead time for standard couplings?
A: For standard sizes, lead time is 7–15 working days. Custom orders usually take 15–25 working days. Expedited shipping is available upon request. -
Q: Does the coupling require lubrication?
A: No, the jaw coupling is a maintenance-free, dry-running design. The spider insert acts as a lubricated element, but no grease or oil is needed. -
Q: Can this coupling be used in wet or humid environments like paper mills?
A: Yes, the steel hubs can be supplied with a corrosion-resistant coating (e.g., zinc plating, black oxide) upon request. The polyurethane spider is naturally resistant to moisture and many chemicals.
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