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Help CenterFlexible Shaft Coupling Membrane Steel Laminae Single Disc Diaphragm High Temperature Resistant for Pump
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Hebei Speed Torque Transmission Technology Co., Ltd. (established in 2017) proudly presents our Flexible Shaft Coupling Membrane Steel Laminae Single Disc Diaphragm High Temperature Resistant for Pump. Designed for demanding industrial applications, this coupling excels in high-temperature environments while providing reliable torque transmission and misalignment compensation. Manufactured in our 3,000-5,000 m² facility by an experienced team of 101-200 professionals, each coupling undergoes strict quality control to ensure consistent performance. With an annual export value of $5-10 million, we serve global markets including North America, Europe, Asia, and Oceania, shipping from Shanghai, Tianjin, and Qingdao ports.
Key Features & Technical Specifications
High Temperature Resistance: Utilizes specially treated steel laminae and single disc diaphragm, capable of operating continuously at up to 300°C without performance degradation.
Excellent Misalignment Compensation: Accommodates angular misalignment up to 1°, parallel misalignment up to 0.5 mm, and axial movement up to ±2 mm, protecting connected equipment from excessive forces.
Zero Backlash: The rigid yet flexible diaphragm design ensures no mechanical play, maintaining precision in pump and compressor drivelines.
Maintenance-Free Operation: No lubrication required; the all-metal construction eliminates wear from friction, reducing downtime and maintenance costs.
High Torque Density: Compact design delivers high torque capacity relative to size, ideal for space-constrained pump installations.
Customizable Fit: Bores, keyways, and overall dimensions can be tailored per customer requirements; surface treatments such as phosphating or black oxide are optional.
| Parameter | Value / Range |
|---|---|
| Material | Steel Laminae (AISI 301/304) + Stainless Steel Diaphragm (optional Inconel) |
| Torque Range | 50 Nm – 5000 Nm (multiple sizes available) |
| Bore Diameter | 10 mm – 100 mm (customizable up to 150 mm) |
| Maximum Operating Temperature | 280°C (standard); 350°C (optional with special coating) |
| Misalignment (Angular) | ≤ 1.0° |
| Misalignment (Parallel) | ≤ 0.5 mm |
| Axial Travel | ± 2 mm |
| Weight (typical for 100 Nm model) | 1.2 kg |
Benefits for Pump Applications: The single disc diaphragm design reduces axial and torsional vibrations, extending pump seal life and reducing cavitation risks. High temperature resistance makes it suitable for hot oil, steam, and chemical pump drives. Our couplings are widely used in centrifugal pumps, positive displacement pumps, and boiler feed pumps across industries like oil & gas, petrochemical, power generation, and water treatment.
Why Choose Hebei Speed Torque?
ISO9001:2015 Certified Quality Management System – ensuring consistent product excellence from raw material procurement to final inspection.
Skilled Workforce – Over 100 employees with years of experience in coupling manufacturing and precision machining.
Global Logistics – Convenient access to major Chinese ports (Shanghai, Tianjin, Qingdao) for timely international delivery.
Custom Engineering Support – Our R&D team can modify designs for special bore sizes, keyway configurations, or non-standard dimensions.
Competitive Lead Times – Standard models ship within 15-20 working days; custom orders typically 25-30 working days.
Backed by strong export volume (US$5-10 million annually) and a broad market presence across six continents, Hebei Speed Torque Transmission Technology Co., Ltd. has earned the trust of pump manufacturers and industrial end-users worldwide. We are committed to delivering couplings that reduce downtime, lower total cost of ownership, and withstand the toughest thermal and mechanical loads.
Contact us today to discuss your specific pump coupling requirements. We welcome inquiries for OEM, ODM, or standard orders. Let our high-temperature resistant single disc diaphragm coupling become the reliable link in your rotating equipment.
Certificate
Frequently Asked Questions (FAQ)
Q: What makes this coupling “high temperature resistant”?
A: The diaphragm and laminae are made from special stainless steel alloys with heat treatment that maintains mechanical properties up to 300°C. Optional coatings enable even higher limits.Q: Can I use this coupling for a vertical pump?
A: Yes, the single disc diaphragm design performs equally well in vertical and horizontal orientations. Please specify orientation when ordering for optimal balancing.Q: What is the typical service life?
A: Under normal operating conditions (within rated torque and temperature), the coupling can last over 5 years without maintenance, as no wearing parts exist.Q: Do you offer different stiffness options?
A: Yes, we provide standard, soft, and stiff diaphragm stacks to suit different vibration damping needs. Contact our engineers for selection assistance.Q: Is this coupling suitable for high-speed pumps (over 3000 RPM)?
A: Absolutely. Our couplings are dynamically balanced and tested for speeds up to 10,000 RPM. Balancing grade is G6.3 or better as standard.Q: How do I determine the correct size for my pump?
A: You need to provide shaft diameters (driver and driven), torque requirements, maximum operating speed, and available space. Our technical team can calculate the ideal model.Q: What surface treatment is best for corrosive environments?
A: For chemical or marine applications, we recommend stainless steel diaphragm with zinc-nickel plating on steel parts. Epoxy coating is also optional.Q: Can you supply a complete coupling with hubs already bored?
A: Yes, we manufacture hubs with finished bores and keyways per your drawings. Pre-bored couplings are ready for installation upon receipt.
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