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Traction Drive for Positioning Paint Removal Device

Traction Drive for Positioning Paint Removal Device

Application: Traction drive used for removing paint from the suspension wires on the Tacoma Narrows Bridge.
Customer: Washington Department of Transportation
Location: Tacoma, Washington
Line Pull: 750 pounds
Line Speed: 16 feet per minute
Power Source: 115 VAC / Single Phase / 60 Hz

Why  APPI:  Washington Department of Transportation (WSDOT) required a traction drive hoist system to remove paint from the suspension wires on the Tacoma Narrows Bridge. After struggling to make an existing twin winch system work properly when raising and lowering a paint stripping tool, WSDOT site supervisors turned to APPI for help.

Allied Power Products, Inc. (APPI) went to work and designed a custom traction drive hoist system for this project.

Specifically, WSDOT wanted to end the practice of cutting the wire ropes on the hoists each time they moved to a new suspension wire and, at the same time, make it easier and safer for workers to make each move. After reviewing the application, APPI produced a purpose-built traction drive hoist that uses a single, continuous loop of wire rope to make moving it quick and easy.

Weighing 70 lbs and with overall dimensions of 22″ X 23″ X 14″ high, the prior problems with getting set up to work on a new suspension wire have been eliminated.

Equipped with a ¾ HP AC motor, the unit provides a maximum of 750 pounds of line pull at a speed of 16 feet per minute, with a handheld pendant provided for operator convenience.

Please contact us if you would like more information about this particular traction drive system or any of our other products and services.


Allied Power Products, Inc. has specialized in providing winches, hoists, capstans, and cranes to meet our customers’ specific application requirements for more than 30 years.

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