Sprag Products
RINGSPANN Series FRS/FRSG Freewheel Clutch
[Manufactured in the USA] The Ringspann Model FRS/FRSG Clutch is designed as a general purpose freewheel to satisfy standard duty applications.
Series FRZ
[Manufactured in the USA] The Centrifugal Lift Off Z is designed for applications that require a low driving speed and a high speed, overrunning outer race.
Series FRX
[Manufactured in the USA] The Centrifugal Lift Off X is designed for applications that require a low driving speed and a high speed overrunning inner race.
RINGSPANN Series TA Torque Arm
[Manufactured in the USA] The use of the Ringspann TA torque arms will facilitate the use of the freewheel as a backstop.
Series 10/20/60
[Manufactured in the USA] Ringspann FRXG Series freewheel clutches with #10, 20, and 60 Torque Arm Kits.
Series FRH Low-Speed Backstops
[Manufactured in the USA] FRH features axial retention, taconite seals, 7-inch bore capacity, 28,000 lb-ft torque capacity and quick-release torque arm.
RINGSPANN Series RFB Backstops
[Manufactured in the USA] RFB backstops are economical, easy to install, robust in construction, flexible in interface and maintenance-free solutions that will improve the life of existing fan-drives.
Series ZZ
ZZ Series units provide an economical solution to applications requiring a one-way clutch while accommodating radial forces and eliminating the need for a ball bearing.
Series ZZ P
ZZ Internal Freewheels are sprag freewheels with bearing support and ball bearing properties.
Series ZZ PP
ZZ Internal Freewheels are sprag freewheels with bearing support and ball bearing properties.
Series ZZ 2RS
ZZ Internal Freewheels are sprag freewheels with bearing support and ball bearing properties.
Series ZZ P2RS
ZZ Internal Freewheels are sprag freewheels with bearing support and ball bearing properties.
Series RC
[Manufactured in the USA] Series RC Clutches are shaft-mounted with a diameter matching that of the 200 Series Ball Bearing, but with no bearing characteristics.
Series RCD Backstops
[Manufactured in the USA] Series RCD Backstops are a direct replacement for the Dodge backstops in TXT (and prior) series shaft mounted reducers.
Series FXM Backstops
The FXM series is designed to be an internal element to your equipment so that the outer race is fixed, while the inner race overruns.
Series CA
[Manufactured in the USA] RINGSPANN clutch couplings are the best tool for the coupling of two in-line shafts, such as between a reducer and a pinion stand.
Metric Clutches
Ringspann freewheels are an essential design element in the machine and automotive industry as well as aviation technology.
Sprag Freewheel Elements
Components to suit a variety of applications with your Sprag Freewheel unit including freewheel chains and sprag cages.
Not sure which product to choose?
For more information on our product line or to request pricing please contact our sales team at info@ringspanncorp.com








