FORMSPRAG

Formsprag Clutch, together with its sister company Stieber Clutch in Germany, is the world’s leading designer and manufacturer of Overrunning Clutches and Backstops for use in numerous Industrial Power Transmission applications including Conveyor & Conveying Equipment, Food Processing Machinery, Gear Reducers, Hoists & Cranes, Mining Machinery, Machine Tools, Paper Converting Machinery, Packaging Machinery, Pumping Equipment, and many other types of Specialty Machinery.

All Formsprag/Stieber clutches are basically overrunning clutches which means they will drive in one direction but overrun (freewheel) in the other direction. Formsprag Clutch and Stieber Clutch offers a wide variety of designs in both Sprag and Ramp & Roller Designs to ensure virtually the ability to meet any application where this function is required.

Indexing Clutches are also offered in a variety of designs to meet the needs of any application where reciprocating motion applied to the driving race is transformed into intermittent motion in only one direction at the driven race.

Formsprag Clutch also offers Special Design Backstop clutches which can be used, where reverse rotation must be positively prevented. Available in six sizes, the Formsprag RL Clutch is a sprag type no-back which permits transmission of driving torque from input to output shaft in both directions of rotation, but restrains any feedback torque of the driven load from rotating the output shaft in either direction.

Formsprag offers four different sizes of Rollerway linear bearings used for supporting and guiding heavy duty machine elements with low friction. In addition, Formsprag offers an extensive line of standard accessories to assist you in customizing the fit of our clutches into your application.

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Description

Formsprag Clutch, together with its sister company Stieber Clutch in Germany, is the world’s leading designer and manufacturer of Overrunning Clutches and Backstops for use in numerous Industrial Power Transmission applications including Conveyor & Conveying Equipment, Food Processing Machinery, Gear Reducers, Hoists & Cranes, Mining Machinery, Machine Tools, Paper Converting Machinery, Packaging Machinery, Pumping Equipment, and many other types of Specialty Machinery.

All Formsprag/Stieber clutches are basically overrunning clutches which means they will drive in one direction but overrun (freewheel) in the other direction. Formsprag Clutch and Stieber Clutch offers a wide variety of designs in both Sprag and Ramp & Roller Designs to ensure virtually the ability to meet any application where this function is required.

Indexing Clutches are also offered in a variety of designs to meet the needs of any application where reciprocating motion applied to the driving race is transformed into intermittent motion in only one direction at the driven race.

Formsprag Clutch also offers Special Design Backstop clutches which can be used, where reverse rotation must be positively prevented. Available in six sizes, the Formsprag RL Clutch is a sprag type no-back which permits transmission of driving torque from input to output shaft in both directions of rotation, but restrains any feedback torque of the driven load from rotating the output shaft in either direction.

Formsprag offers four different sizes of Rollerway linear bearings used for supporting and guiding heavy duty machine elements with low friction. In addition, Formsprag offers an extensive line of standard accessories to assist you in customizing the fit of our clutches into your application.

Following Formsprag Cluctches offer:

  • FHB Backstopping Clutches

The Formsprag FHB backstopping clutch is completely maintenance free. It engages instantaneously and automatically to prevent any reverse shaft rotation. These clutches are directly interchangeable with FALK Model BIF external high-speed backstops.

  • FSO Overrunning Clutches

Formsprag model FSO overrunning clutches are through-shaft mounted, with the inner race driven by a key. They are suitable for overrunning, backstopping, and light to medium-duty indexing applications. Wash-down duty options are available if necessary.

  • FSR Overrunning Clutches

FSR series overrunning clutches from Formsprag are sleave bearing supported and suitable for general purpose overrunning, indexing, and backstopping applications. A keyseat and snap-ring groove are provided to secure attached parts to the hub.

  • FW Clutch Couplings

Formsprag FW clutch couplings consist of an FSO clutch paired with a Form-Flex disc coupling. This allows the clutch coupling to accommodate misalignment for shaft-to-shaft in-line mounting. FW clutch couplings accommodate angular and parallel misalignment, are torsionally stiff, and can couple shafts of different sizes.

  • GFR Modular Clutches

Formsprag’s GFR modular clutch is an excellent low speed backstop. The outer race of this clutch is designed to support and center any component bored to H7 tolerance. When used in an indexing application, indexes should not exceed 350 per minute

  • HPI Indexing Clutches

Formsprag’s HPI indexing clutches are designed for medium to heavy-duty indexing applications. They are used to convert reciprocating linear motion into incremental, uniform rotary motion. Washdown options are available. Formsprag clutches are designed for long and dependable life.

  • LLH Holdbacks

Formsprag Long Life Holdbacks (LLH) overrun in one direction, allowing rotation, while rotation in the opposite direction is prevented. This is accomplished by a one-piece, quickly detached torque arm fixed to one race. As the name implies, these are designed for long life and are sealed to protect against airborne contaminants.

  • RL Overrunning Clutches

The Formsprag RL clutch permits transmission of driving torque in both directions, but restrains any feedback torque from the driven load from rotating the output shaft. The outer race diameter is the same size as standard bearing dimensions for easy mounting. This clutch operates with no backlash.

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