Torque Multipler with Planetary-gear Mechanism with Max Output 1200 ft lbs - Williams

The Williams TM‑391 Torque Multiplier is engineered for heavy‑duty industrial applications where high torque is required to loosen or tighten stubborn fasteners. Built with a precision planetary‑gear mechanism, it delivers smooth, efficient torque multiplication while maintaining durability and reliability in demanding environments.

With a maximum output of 1,200 ft‑lbs, the TM‑391 gives technicians the power they need using only a fraction of the input force—perfect for HVAC, industrial maintenance, mechanical repair, utilities, and field service.

Key Features

• Max Output: 1,200 ft‑lbs of torque for demanding fastening applications.
• Planetary‑Gear Mechanism: Provides smooth, efficient torque multiplication and longer tool life.
• Safe, Controlled Operation:
  • Input and output rotate in the same direction for predictable performance.
  • Reaction bar rotates opposite to the input and must rest securely against a rigid object to manage reaction forces.
• Service-Friendly Design:
  • Head assembly can be disassembled by removing four screws for cleaning and lubrication.
• High‑Efficiency Construction: Needle‑bearing design improves performance and reduces wear during high‑torque operation.
• Versatile Power Source Compatibility: Can be used with standard torque wrenches or air‑driven (non‑impact) tools.

This torque multiplier is ideal for technicians who need a compact, mechanical solution for high‑torque jobs without switching to hydraulic systems.