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Help CenterCustomized Jmb Type Double Diaphragm Coupling, Disc Coupling
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Hebei Speed Torque Transmission Technology Co., Ltd. proudly presents our Customized Jmb Type Double Diaphragm Coupling – a high-quality disc coupling designed for demanding industrial applications. With over 7 years of manufacturing experience, a factory spanning 3,000–5,000 square meters, and an annual export value of US$5–10 million, we deliver precision coupling solutions to over 50 countries worldwide. This coupling combines the advantages of a double diaphragm structure with the flexibility of a disc design, offering exceptional misalignment compensation and torque transmission without lubrication. Whether you need standard sizes or fully custom bores, keyways, and flanges, our engineering team ensures every unit meets your exact requirements.
Key Features and Technical Advantages
Double Diaphragm Design: Two stainless steel diaphragms provide high torsional stiffness while accommodating angular, parallel, and axial misalignments. This reduces bearing loads and extends equipment life.
Disc Coupling Flexibility: The disc pack allows for minor misalignments without generating reaction forces, ideal for high-speed and high-precision applications.
Zero Backlash: Precision-machined components ensure vibration-free operation and accurate torque transmission, critical for servo drives and positioning systems.
Maintenance-Free Operation: No lubrication or wear parts – simply install and forget. This lowers total cost of ownership.
Customizable Interface: Bores, keyways, set screws, pilot bores, and flange connections can be tailored to your specific shaft dimensions. Surface treatments include phosphating, zinc plating, or polishing.
High Torque Capacity: Standard torque values range from 50 Nm to 50,000 Nm, with options for higher ratings upon request.
Technical Specifications (Standard JMB Series)
| Parameter | Value Range | Customizable |
|---|---|---|
| Nominal Torque | 50 – 50,000 Nm | Yes (up to 100,000 Nm) |
| Maximum Speed | 4,000 – 10,000 RPM | Depends on balance grade |
| Bore Diameter | 10 – 150 mm | Up to 300 mm (special order) |
| Angular Misalignment | ≤ 0.5° | Can be increased with custom disc pack |
| Parallel Misalignment | ≤ 0.2 mm | Customizable for specific needs |
| Axial Misalignment | ≤ 1.5 mm | Adjustable via intermediate shaft length |
| Material | Stainless Steel (1.4301) or Alloy Steel (42CrMo4) | Alternative materials available |
| Temperature Range | -40°C to +200°C | High-temperature versions for 300°C |
Why Choose Our Disc Coupling for Your Application?
Extended Equipment Life: By absorbing misalignments and dampening vibrations, the coupling reduces stress on bearings and seals, prolonging pump, motor, and gearbox service intervals.
Energy Efficiency: High torsional stiffness and zero-backlash prevent power loss during torque transmission, improving overall system efficiency.
Quiet Operation: The metal diaphragm design operates silently compared to elastomeric couplings, making it suitable for noise-sensitive environments.
Broad Application Range: Ideal for pumps, compressors, fans, generators, conveyors, marine propulsion, textile machinery, and industrial robots.
Global Logistics Support: We ship from Port of Shanghai, Port of Tianjin, and Port of Qingdao, ensuring fast delivery to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East.
Trusted Quality with ISO9001 Certification
At Hebei Speed Torque Transmission Technology Co., Ltd., every coupling undergoes rigorous dimensional inspection and dynamic balancing before shipment. Our ISO9001:2015 certified quality management system ensures consistent product reliability. With a dedicated team of 101–200 employees and an export network spanning over 15 major markets, we have delivered thousands of custom coupling solutions to satisfied customers worldwide. Our annual export value exceeding US$5 million reflects the trust engineers place in our products.
Certificate
Ready to optimize your power transmission system? Contact us today with your shaft details and performance requirements – our technical team will provide a customized JMB type double diaphragm coupling that fits perfectly and performs reliably for years to come. Experience the Speed Torque difference in precision, durability, and service.
Frequently Asked Questions
Q: What is the typical lead time for a customized coupling?
A: Standard customization (bore, keyway) takes 7–15 working days after drawing approval. For complex flange designs, please allow 15–25 days. We provide expedited delivery for urgent orders.Q: Can the coupling be used in explosive environments?
A: Our standard diaphragm coupling is made of stainless steel which is spark-proof. For ATEX or IECEx certified versions, please contact our sales team for specific material and design options.Q: How do I choose the right size for my motor and pump?
A: Provide us with the shaft diameters, distances between shaft ends, torque requirements, and RPM. Our engineers will select the appropriate JMB size or design a custom intermediate length.Q: Is the coupling maintenance-free?
A: Yes. The double diaphragm disc coupling has no wearing parts and requires no lubrication. Periodic visual inspection is recommended every 6 months.Q: What materials are available for the diaphragms?
A: Standard diaphragms are made of stainless steel (1.4301). For higher strength or corrosion resistance, we offer duplex stainless steel or Hastelloy alloys (custom).Q: Can the coupling compensate for large misalignment?
A: This design is optimized for moderate misalignments. If your application has extreme shaft displacement, a double-flex diaphragm coupling with a spacer can be designed. Please specify.Q: What is the warranty period?
A: We provide a 12-month warranty from the date of shipment against manufacturing defects. Extended warranty is available upon request.
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