Torque Multiplier with Planetary-gear Mechanism with Max Output - J.H. Williams

The J.H. Williams JHWTM-290 Torque Multiplier with Planetary-gear Mechanism is engineered for professional technicians and mechanics who require precise, high-output torque in demanding automotive and industrial environments. This robust, power-free tool employs a precision planetary gear system to efficiently amplify input torque, providing an effective solution for heavy-duty fastening and breakaway tasks where conventional large torque wrenches or impact tools might be impractical or unavailable.

Key Features

• High Torque Multiplication: Delivers up to 750 ft-lb (1016 Nm) of output torque with a 4:1 gear ratio, requiring only 227 ft-lb input, making heavy-duty fastening and loosening tasks manageable with less manual effort.
• Industrial-Grade Durability: Constructed from robust industrial-grade steel and other resilient materials, ensuring it withstands frequent, rigorous use in challenging fleet maintenance, heavy equipment repair, and industrial plant operations.
• Power-Independent Operation: Functions without external power, making it an essential tool for mobile service trucks, roadside repairs, remote job sites, and situations lacking air or electrical access.
• Optimized for Access: Its compact design, featuring an 8.5-inch overall length and 2-13/16-inch head diameter, significantly improves access in confined spaces around chassis components, suspension hardware, and tight wheel wells.
• Enhanced Fastener Integrity: Facilitates consistent tightening and breakaway torque, which helps minimize the risk of damage to studs, nuts, or mating components, thereby enhancing joint integrity and repeatability in critical assemblies.

Applications

The JHWTM-290 is commonly applied to wheel lugs, hub assemblies, and large fasteners on Class 6–8 trucks, buses, trailers, and heavy-duty agricultural and construction equipment. It is also well-suited for industrial maintenance tasks involving flanges, structural bolting, and large machinery where high torque is required but clearances are limited. Technicians utilize this torque multiplier to safely break free rusted, seized, or over-torqued fasteners and to apply controlled, accurate torque in critical assemblies.

Specifications

• Max Output Torque: 750 ft-lb (1016 Nm)
• Input Capacity: 227 ft-lb
• Gear Ratio: 4:1
• Input Square Drive: 1/2 inch
• Output Square Drive: 3/4 inch
• Overall Length: 8.5 inches
• Head Diameter: 2-13/16 inches
• Head Height: 3-1/4 inches
• Weight: 4.74 lbs