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We are Hebei Speed Torque Transmission Technology Co., Ltd., a manufacturer specializing in industrial transmission solutions since 2017. Our Industrial Rubber Flexible Coupling with Flange Connection has been developed to meet the needs of diesel engine and industrial power transmission systems, combining durable construction with effective vibration damping. This coupling is built to deliver stable torque transmission, reduce noise, and protect connected equipment from shock load and minor misalignment.
The flange connection design allows for fast and secure mounting without complicated assembly steps. The rubber element is strategically bonded or mounted between two flanges, providing a flexible yet resilient link that accommodates angular, parallel, and axial deviations. This makes the coupling ideal for harsh industrial environments where engines operate at variable speeds and loads.
Key Features and Benefits- High elasticity rubber element effectively absorbs vibration and dampens torsional shock, protecting the engine and driven machinery.
- Flange connection permits quick installation, easy bolt alignment, and simple replacement of the rubber element when maintenance is needed.
- Suitable for diesel engines, generators, pumps, compressors, and other industrial equipment used in continuous or intermittent duty.
- Oil-, heat- and weather-resistant rubber compound helps maintain performance in demanding working environments.
- Compact and balanced design reduces unbalanced forces and extends the life of bearings and seals.
- Can accommodate certain angular and parallel misalignment, reducing stress on adjacent components.
- Available in different bore sizes and flange patterns, with customized options upon request.
| Specification | Typical Value |
|---|---|
| Material | Natural rubber / synthetic rubber, with cast iron or steel flange |
| Connection | Flange connection with bolt holes |
| Application | Diesel engine drive, generator, pump, compressor |
| Bore diameter | Customizable to match customer shaft sizes |
| Speed range | Dependent on coupling size and operating conditions |
| Operating temperature | Varies by rubber compound; standard range can be provided on request |
| Hardness | Selectable shore hardness to match torsional stiffness needs |
| Finish | Paint or anti-corrosion coating available |
Diesel engines generate significant torsional vibration and torque peaks, especially during start-up and load changes. The flexible rubber section of this coupling acts as a low-pass filter for torsional vibrations, helping to reduce stress in the drivetrain. By isolating the engine from the driven equipment, the coupling prevents excessive wear on engine crankshafts, transmission components, and pumps. In addition, the flange connection makes it easier to align the coupling using standard dial gauges or laser alignment tools, improving installation accuracy and minimizing initial setup time.
The rubber element also provides a degree of electrical insulation between prime mover and driven equipment, which is beneficial in marine and off-highway applications where galvanic corrosion is a concern. For operators looking to reduce downtime, the coupling's simple design allows the rubber element to be inspected and replaced without disassembling the entire driveline. Spare parts and complete units are available based on the ordered coupling size.
Ideal Applications- Marine propulsion systems driven by diesel engines
- Industrial generator sets and auxiliary power units
- Irrigation pumps, fire-fighting pumps, and water transfer systems
- Compressors and blowers operating at constant or variable speed
- Mining, agricultural, and construction machinery requiring robust power take-off
Our factory can produce couplings in different bore diameters, keyway sizes, flange dimensions, and rubber hardness values to suit specific diesel engine models and driven equipment. Pilot bores are available, and final machining can be completed according to customer drawings. All units are subject to quality control procedures within our ISO9001-certified management system. The company is located in Cangzhou, Hebei, with convenient access to ports such as Shanghai, Tianjin, and Qingdao, ensuring efficient delivery to global customers.
Hebei Speed Torque Transmission Technology Co., Ltd. was established in 2017 and operates a modern factory of 3,000-5,000 square meters. Our team of 101-200 employees supports an annual export value of US$5 million to US$10 million, serving clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. We supply reliable couplings used in demanding industrial environments. Contact us today with your shaft sizes and torque requirements, and we will help you select the right rubber flexible coupling for your diesel engine system.
Frequently Asked Questions
1. What types of diesel engines can this coupling be used with?
This flange-type rubber flexible coupling can be matched with a wide range of diesel engines, from small generator sets to larger industrial and marine engines. The exact compatibility depends on torque, speed, shaft diameter, and flange bolt circle. Our team can help you confirm sizing based on your engine data.
2. Can the bore diameter and flange dimensions be customized?
Yes, bore diameter, keyway, flange bolt pattern, and overall dimensions can be customized according to your drawings or sample. Pilot bore versions are also available for final machining at your facility. Please provide your shaft and mounting requirements for a tailored quote.
3. What are the main advantages of a rubber flexible coupling over a rigid coupling?
A rubber flexible coupling absorbs torsional vibration, dampens shock loads, and tolerates minor misalignment without generating high reaction forces. This helps protect bearings, seals, and gears while extending the service life of both the engine and the driven equipment. Rigid couplings require precise alignment and provide no vibration isolation.
4. What is the service life of the rubber element?
Service life depends on operating torque, ambient temperature, speed, and alignment accuracy. Under normal conditions, the rubber element can perform for an extended period, but it should be inspected periodically for cracks or wear. Replacement rubber elements are available from our factory for convenient maintenance.
5. Does the coupling require lubrication or frequent maintenance?
No, this flexible coupling is designed as a maintenance-friendly component that does not require grease or oil. The only regular task is to check for visible wear, element deterioration, and bolt tightness. This reduces maintenance costs and downtime compared to gear couplings.
6. How should the coupling be aligned during installation?
Although the flexible rubber element can tolerate a certain amount of misalignment, it is recommended to align the coupling halves within the allowable limits using a straight edge or dial indicator. Proper alignment reduces stress on the rubber element and promotes a long service life.
7. Can the coupling handle high torque and shock loads?
Yes, the combination of a resilient rubber core and robust metal flanges allows the coupling to handle significant torque while cushioning shock peaks. The exact torque rating varies with the selected size, rubber hardness, and operating conditions. Contact us with your application details for a suitable recommendation.
8. What is the delivery lead time?
For standard sizes, we usually ship within 15-30 days after order confirmation. For customized flanges or special bore sizes, the lead time may be longer depending on the production schedule. We will confirm the exact delivery time when you place the order.
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