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Formsprag Model FL Bi-Directional Backstopping Clutch for Artillery Gun
Formsprag Clutch was selected to provide a clutch solution for use on the U.S. Army
towed howitzer artillery piece. Operated by a 5-man crew, the gun utilizes a digital
fire control system that provides navigation, pointing and self-location. The gun can
accurately fire a 155mm GPS-guided munition at a range of up to 25 miles (40 km)
Form-Lock (FL) bi-directional clutches were chosen to meet the challenging gun drive
system application requirements. These clutches, also known as “No-Backs,” provide
a holding brake and allow for accurate positioning of the gun’s elevation and azimuth
drives. The clutch is used to smoothly and quickly position the gun barrel in the presence
of the overhauling forces of gravity, providing precise movements.
Built to withstand tough battlefield and industrial environments, Form-Lock clutches are
available with torque ratings up to 4800 in.lb. (542 Nm).
- Bi-Directional clutch
- Torque ratings up to
4800 in.lb. (542 Nm)