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Critical Rotor Assembly Nut for Helicopter Tightened with a Hand Torque Multiplier

A helicopter manufacturer had a critical torque application during the routine maintenance process of their aircraft. The rotor of the helicopter requires servicing after every 20 hours of flight. Some of these aircraft are serviced in very remote locations, where air or power is not readily available or reliable. Ensuring proper torque control is achieved for the rotor assembly nut is a critical element for maintaining the continuous safe operation of the helicopter.

The director of maintenance contacted Mountz Inc. and explained the application requirements. He inquired about cost effective torque control options that were available to ensure the quality and safety needs of their critical fastening application were satisfied.

The impact wrench lacks torque control and is destructive by nature with its "hammering" design. These tools are not ergonomically friendly for a technician and require a high maintenance budget. Also with some locations being remote, access to power would not be possible. Therefore, an impact wrench was not an option.

Hydraulic wrenches are notorious for their heavy ratchets, bulky compressors and laborious operation. Hydraulic tools operate through a hydraulic ram that extends and retracts, ratcheting the head. This is a long and tedious process that requires the technician to activate and stand by the pump with a hand-held controller. Again with some locations being remote, access to power would not be possible. Therefore, a hydraulic wrench was not an option.

After discussing it with his team of technicians, the director of maintenance selected the Mountz hand torque multiplier as the only option to resolve their critical maintenance application issue. Loosening and retightening the rotor assembly nut during the maintenance process of the helicopter's rotor.

The Mountz hand torque multiplier provides precision tightening and loosening of all heavy duty fastening connections. That was a critical element for the helicopter manufacturer to ensure proper torque control would be met during servicing of the helicopter's rotor. These dependable torque multipliers are the ideal tools for applications where air and electricity aren't easily accessible, which satisfied another requirement. The gearing design of the hand torque multiplier allows for a high torque output with minimal input.

Only Mountz torque multipliers provide precision torque control, making it easier and often safer to assemble and service-threaded fasteners while reducing application problems and tool costs.