The ATRA-FLEX® M-Series flexible couplings are designed to accommodate a wide range of industrial applications, offering a torque capacity up to 3,610,000 in-lbs and can handle shaft diameters up to 16 inches. These couplings feature a unique twist-and-lock ring that eliminates the need for fasteners or special tools, facilitating easy installation and maintenance. The rugged polyurethane insert effectively absorbs torsional shock and vibration while accommodating angular, parallel, and axial misalignment, thereby enhancing equipment longevity. Additionally, the couplings operate lubrication free, have no metal-to-metal contact and can withstand temperatures ranging from -60°F to 350°F. For applications requiring corrosion resistance, options include stainless steel components or a cost-effective nitrocarburized process known as OnyxShield™, as an alternative.

HOW IT WORKS
The M-Series operates using a twist-and-lock design that secures the polyurethane insert between two hubs. This insert serves as the flexible element that transmits torque while isolating vibration and accommodating misalignment— angular, parallel, and axial. The coupling’s innovative construction allows for quick insert removal, streamlining maintenance and minimizing downtime. The insert’s flexible resilient material ensures efficient energy transfer while protecting connected equipment from damaging loads and misalignment forces.

MANUFACTURING
M-Series is manufactured in the USA. Each component is precision-machined to ensure superior fit, balance, and performance. Hubs and rings are available in a variety of materials, including carbon steel, stainless steel, and cost-effective OnyxShield™ components for enhanced wear and corrosion resistance. The polyurethane inserts are molded and tested for durability and long service life that offer resistance to almost every fluid found in industry today. ATRA-FLEX® ensures strict quality control at every stage of production, delivering a coupling that performs reliably even in the most demanding applications.

The T-Series uniquely transmits torque while accommodating misalignment without generating reactionary loads, increasing bearing life. Torque transmission capabilities up to 2,041,000 in.-lbs and shaft diameters to 20.00”. Coupling types range from close coupled to long span floating shaft couplings. The bolt on ring makes the T-Series a great fit for bidirectional and reversing applications. The T-Series has no metal to-metal contact and in the event of a lock up, the insert will shear without damaging the connected equipment. Lubrication free and access to the insert without moving the connected equipment means replacing inserts with ease in minutes vs hours compared to lubricated coupling maintenance.

HOW IT WORKS
Ring Hub, Flex Hub, lnsert, Drive Ring, and Bolt Kit. The Ring Hub and Flex Hub are installed on the shafts with the Drive lnsert is placed around the Flex Hub engaging the bottom lnsert engaging the top lobes of the lnsert. The Drive Ring is then fastened to the Ring Hub using high strength alloy steel socket head cap screws with high collar lock washers. The coupling will now transmit torque with silent, smooth, reliable, and minimal maintenance operation.

MANUFACTURING
T-Series is manufactured in the USA. Standard hubs and rings are machined from solid carbon steel rounds and tubing, maintaining tight tolerances which provides excellent coupling balance. Stainless Steel is available and cost-effective OnyxShield™ is available for corrosive environments. T-Series inserts are made from durable custom dependable, lubrication free torque transmission for your rotational equipment and come with product/technical