Friction torque limiter STH Series

mechanicalsafetywith coupling

PREVENT DAMAGE AND DISCOMFORT Mach III's torque limiting coupling has been used for decades to turn the heavy-duty Milwaukee Super Hole Shooter Drill into an efficient tool for opening and closing gate valves, butterfly valves, ball valves, plug valves, mud valves, sluice gates, slide gates and other rotary actuated mechanisms. HOW IT WORKS The torque coupling is set to slip at the pound-inch or pound foot value you specify. This is the “slip torque setting” and can be set at the factory prior to shipment or can be set or adjusted in the field with a spanner wrench. The torque coupling has a #3 Morse taper shaft that connects directly to the socket of the drill. When the drill is powered on, the torque is transmitted until the slip torque setting is exceeded. It then slips until the drill is powered off, preventing excess torque from damaging the equipment or jarring the operator. No reset is required after the coupling slips. LIMITATIONS Maximum slip torque setting: 2,796 lb.in (233 lb.ft.) Consult Mach III Engineering if the intended use exceeds 1750 RPM. OPTIONS Output couplings are available for a variety of geometries and sizes; see below. If the socket size, bore size, or geometry you require is not listed, customized couplings can be manufactured. Contact Mach III Engineering to discuss your needs. HOW TO ORDER: BASE UNIT + COUPLING(S) T4X2R-STH is the base unit. Couplings attach to the face of the base unit and many are interchangeable without completely removing the bolts. Torque Setting can be done at the factory. All torque settings are +/- 10% of the specified value.