Formsprag Clutch

HVH Industrial Solutions is an authorized distributor of Formsprag Clutch

For more than 50 years, Formsprag Clutch has been an industry leader in designing and manufacturing overrunning clutches, backstops, bi-directional clutches, and clutch couplings. Formsprag offers the broadest range of sprag and ramp & roller-type overrunning clutches and backstops available globally.
Formsprag has dramatically reduced lead times!

  • Over 220 Clutches in the Premier Products Program Ship SAME Day
  • Over 840 FSO, HPI & FSR Products Ship in 2 to 3 Days

HVH Industrial is an authorized distributor for all Altra Motion companies and also offers brakes and clutches from Twiflex, StromagWarner ElectricMarland, MatrixSvendborg BrakesInertia Dynamics, and Stieber

At HVH, we work closely with the Formsprag engineering team to provide superior customer service and engineering support.

Formsprag Clutch Literature:

Overrunning, Indexing, Backstopping Clutches

Overrunning Clutches Application Manual

Sprag Retainer Assemblies

Application Guide Overrunning Clutches


If you have any questions, write us via live chat (one of our team members will answer your questions), call, or send us a quote request. The HVH team is always ready to help you.


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Formsprag is a leading manufacturer of industrial clutches and brakes with over 75 years of experience in the industry. The company offers a wide range of products that are designed to meet the needs of different applications. With advanced engineering and superior performance, Formsprag is the go-to solution for industrial applications.

Formsprag History

Formsprag Clutch has a storied history that can be traced back to World War II, when the company's first product, the Formsprag sprag clutch, was developed for use in aircraft engines. Following the war, the company shifted its focus to creating overrunning sprag clutches for commercial markets. The first commercial product that was created was the predecessor to the present-day FS-100, -200, and -300 series. This design was adaptable enough to be utilized in a variety of industrial applications, such as woodworking tools, industrial machinery, and even automobiles.

Formsprag's engineers have continuously innovated sprag and other clutch technologies over the years, securing many patents in the process. These advancements in sprag technology and design have enabled Formsprag's products to satisfy increasingly complicated requirements in both the industrial and aerospace sectors. 

Today, Formsprag's products can be found in numerous industrial and aerospace applications, such as aircraft engine starters, APU drives, helicopter main drives, tank turret positioning backstops, food processing machinery, gear reducers, hoists and cranes, mining machinery, machine tools, paper converting machinery, packaging machinery, and pumping equipment.

The company remained independent until it was purchased by the Dana Corporation in 1973. Formsprag became part of Dana's Warner Electric Division in 1991, and in 2000, all of Warner Electric, including Formsprag Clutch, was purchased by Colfax Corporation and became part of the Colfax Power Transmission Group. In October 2022, Warner Electric, including Formsprag, was acquired by Regal Rexnord.

Despite changes in ownership, Formsprag Clutch has maintained its unwavering commitment to excellence, value, and service. Its products continue to perform dependably in a wide range of applications, from Long Life Holdbacks in underground coal mines to Form-Lock bidirectional backstops on ships of the U.S. Navy and the International Space Station. With its rich legacy of innovation and dedication to customer satisfaction, Formsprag Clutch is in a strong position to continue serving its customers for many more years to come.

Products offered by Formsprag Clutch

The company offers a comprehensive range of products that cater to the diverse needs of various industries, including General Purpose Clutches, Special Purpose Clutches, Backstopping Clutches, Modular Building Block Clutches, Clutch Couplings, and Accessories.

General Purpose Clutches

The General Purpose Clutches offered by Formsprag are designed to provide reliable power transmission and control for a variety of industrial and automotive applications. These clutches are available in a range of sizes and torque capacities, making them suitable for use in a wide range of equipment and machinery. The General Purpose Clutches offered by Formsprag are also designed to be easy to install and maintain, which helps to minimize downtime and reduce maintenance costs.

Special Purpose Clutches

In addition to their General Purpose Clutches, Formsprag also offers a range of Special Purpose Clutches which are designed for specific applications, such as paper processing, printing, and oil drilling. These clutches are designed to withstand harsh conditions, including extreme temperatures, corrosive environments, and heavy loads. They are engineered to provide precise control, high torque capacity, and long service life.

Backstopping Clutches

Formsprag's Backstopping Clutches are designed to prevent equipment from rotating in the wrong direction, which can cause damage to equipment and even poses a safety hazard. These clutches are commonly used in conveyor systems, hoists, and other equipment where backstopping is required. Formsprag offers a range of backstopping clutches, including sprag, roller, and ramp-and-roller designs.

Modular Building Block Clutches

Formsprag's Modular Building Block Clutches are designed to provide a versatile and customizable solution for power transmission and control. These clutches can be easily combined with other Formsprag products, such as clutch couplings and accessories, to create a customized solution that meets the specific needs of a particular application.

Clutch Couplings

The Clutch Couplings offered by Formsprag are designed to provide a flexible and reliable connection between two shafts. These couplings are available in a range of sizes and configurations, making them suitable for use in a wide range of equipment and machinery.


Formsprag offers a range of accessories, including axial restraint keys, axial restraint set collars, oil reservoirs, torque arms, building block design covers, and stub shaft adapters to provide a complete solution for industrial clutches and braking systems.


In conclusion, Formsprag offers a comprehensive range of industrial clutches and braking systems to meet the diverse needs of various industries. From General Purpose Clutches to Special Purpose Clutches, Backstopping Clutches to Modular Building Block Clutches, and Clutch Couplings to Accessories, Formsprag provides reliable, high-performance solutions that are easy to install and maintain. Whether you need a standard or custom-designed solution, Formsprag has the expertise and experience to deliver a solution that meets your needs.