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11/30/2018

Tightening of Large Counter Weights on Equipment with Torque Wrench

Synopsis


Details

A product support engineer from a medical manufacturer needed to develop a process that would assure system installation contractors could tighten large bolts on a 4000 lb rotating counterweight to a torque specification of 750 lbf ft. Accessibility to fasteners was limited and precluded the use of pneumatic or hydraulic torque multipliers. It was imperative that contractors properly torqued the fasteners to prevent potential liability that could result if counterweight came free and injured a patient.


The solution for the engineer was a click wrench with two special custom wrench heads designed by Mountz Engineering. The engineer chose the wrench because it is a lightweight with a high torque range capacity. The weight of the click wrench was a key component in the product selection because the heads that were to be used with the wrench added significant weight to the overall tool.


Length dependency was also an important consideration for additional fasteners that were not going to be used with the Special Heads. Accessibility to fasteners was limited and they could not assure contractors would be able to pull the wrench from a proper location on the handle.


The wrench will assure proper torque is achieved regardless of where the contractor technician positioned the pull on the wrench handle. The engineer's problem was solved with the solution that Mountz provided him, which eliminated the potential liability that could result if the counterweight came free and injured a patient.

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