Nmt group provides hold-back [back-stop]devices. These hold-back devices are mainly used as overrunning clutches, where the shaft overruns at high speeds. These units have individually spring-loaded, centrifugally lift-off sprags, housed in a cage by means of pins connected with rotating inner ring having driving contact with outer ring. Constructional specification includes that bore diameter is up to 220 mm. These devices have permissible wide radial run-out, wear free & long life, easy assembly, no special lubrication required and are maintenance free. These hold-back devices find applications in inclined conveyors, elevators, pumps, blowers, fans, gearboxes, electric motors, geared motors, pumps & compressors, ball mills, engine starter, etc.