Let’s learn about Martin Martin Flexible Couplings Quadra-Flex® with Dai Hong Phat through the following article!
1. About Dai Hong Phat Corp- Martin USA
– Dai Hong Phat Corp is the official authorized representative of Martin USA in Vietnam. We provide genuine transmission shaft coupling solutions that meet international standards, helping to optimize the performance and durability of machinery systems.
– Martin Sprocket & Gear, founded in 1951 in the US, specializes in providing transmission solutions and industrial equipment. Martin stands out with its products on HRC couplings, pulleys, tapered bushings… becoming a prestigious name in the industry.
– Martin Quadra-Flex® Flexible Couplings supplied by Dai Hong Phat are 100% genuine imports, with full CO/CQ, meeting international quality standards.
View more: Other Martin flexible couplings
2. Characteristic of Martin Flexible Couplings Quadra-Flex®
– Manufacturer brand: Martin/USA.
– 4-Way Flexing Design
– Quadra-Flex shaft couplings can simultaneously compensate for parallel misalignment, angular misalignment, torsional vibration, and axial displacement, ensuring stable drive system operation and extending bearing and equipment lifespan.
+ Parallel misalignment compensation from 0.015″ to 0.062″ depending on size.
+ Angular misalignment tolerance up to 1°.
+ Allows axial displacement of approximately 0.125″.
+ Effectively absorbs vibrations and shock loads thanks to the elastic element.
-Martin Flexible Couplings Quadra-Flex® use polymer elastic elements, so lubrication is not required, reducing periodic maintenance costs and minimizing downtime.
– Quadra-Flex shaft couplings use various types of sleeves (toothed washers) to optimize performance in different operating environments:
+ TPR: Operating temperature from -46°C to +135°C, elastic torsion of 15°.
+ EPDM: Operating from -34°C to +135°C, suitable for high-temperature environments.
+ Neoprene: Better oil resistance than EPDM, temperature from -18°C to +93°C.
+ Hytrel: Designed for heavy loads, transmitting approximately 4 times more power than TPR, EPDM, or Neoprene; operating from -54°C to +121°C.
See Additional information: Martin Quadra-Flex Sleeves
– Martin Flexible Couplings Quadra-Flex® offers various flange types including J, S, B, and SC Spacer, suitable for many different installation standards. The SC Spacer version allows for spacer removal without moving the motor or pump, significantly reducing equipment maintenance time.
– With its flange and elastic sleeve design and similar drive principle, the Martin USA Quadra-Flex shaft coupling is an equivalent replacement for TB Woods’ Sure-Flex (Sureflex) series in many industrial applications. Replacement requires precise matching of size, torque, rotational speed, shaft bore size, and sleeve material to ensure equivalent performance.

Martin Quadra-Flex® Coupling Selection Guide
| FOR ANY INQUIRIES OR QUOTATION REQUESTS, PLEASE CONTACT: SALES DEPARTMENT HOTLINE: (+84) 0906 955 057 – EMAIL: INFO@DHP-CORP.COM.VN |
3. Applications of Martin Flexible Couplings Quadra-Flex®
– Martin offers 13 sizes of Martin Flexible Couplings Quadra-Flex® with torque transmission capabilities up to 72,000 in-lbs (≈ 8,135 Nm), meeting the needs of light to heavy load applications in pumps, fans, conveyors, crushers, and many other industrial drive systems.
4. Technical specifications of Martin Flexible Couplings Quadra-Flex®
| Catalogue Khớp nối Martin Quadra-Flex® |
Installation Khớp nối Martin Quadra-Flex® |

| Size | Sleeve | Rated Torque (in-lbs) | Max RPM |
| 3 | TPR | 78 | 9,2 |
| 4 | TPR | 156 | 7,6 |
| 5 | TPR | 312 | 7,6 |
| 6 | TPR / Hytrel | 585 / 1,800 | 6 |
| 7 | TPR / Hytrel | 940 / 2,875 | 5,25 |
| 8 | TPR / Hytrel | 1,475 / 4,530 | 4,5 |
| 9 | TPR / Hytrel | 2,340 / 7,200 | 3,75 |
| 10 | TPR / Hytrel | 3,735 / 11,350 | 3,6 |
| 11 | TPR / Hytrel | 5,890 / 18,000 | 3,6 |
| 12 | TPR / Hytrel | 9,360 / 31,500 | 2,8 |
| 13 | EPDM / Hytrel | 14,750 / 47,268 | 2,4 |
| 14 | EPDM / Hytrel | 23,400 / 72,480 | 2,2 |
| 16 | EPDM | 47,25 | 1,5 |
5. Why choose Dai Hong Phat Corp?
– 100% genuine products imported directly from Martin USA.
– Protect customers from counterfeit goods and always provide full CO/CQ documents.
– Goods in stock, fast delivery nationwide 24/7.
– Free technical consultation and support for drawings, catalogs.
– Refined processing workshop to meet individual requirements.
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– Hotline: +84906.955.057 | – Email: info@dhp-corp.com.vn
– Website: https://en.daihongphat.asia/ – https://khopnoitruc.com/ – https://ringfeder.com.vn/






