Torque-Limiting Screwdriver Prevents Over-Torque

Built with a cam-over design, Mountz's TLS is a pre-set torque screwdriver that prevents fasteners and bolts from being over-torqued. The design action of the torque screwdriver is such that when the tool reaches its pre-set torque value, the mechanism disengages from the drive, thus limiting the torque applied. The Mountz TLS torque screwdriver is suitable for use in a variety of industries, including aerospace, automotive, electronics, energy, medical and packaging.

It is pre-set to the required torque value of the application, and then the tool signals the operator when torque is achieved. The design action of the torque-limiting screwdrivers is such that when the tool reaches its set torque value the mechanism disengages from the drive, thus limiting the torque applied. Inside the screwdriver, a precision radial ball clutch 'slips-free' when the set torque is reached, preventing over-torquing. Also, the thrust bearings ensure that the torque setting is independent of any end load applied by the operator.

Designed and manufactured to meet the accuracy and repeatability requirements of ISO6789: 2003, Mountz offers various TLS torque screwdriver models that range from 0.7ozf.in to 120lbf.in. Featuring a tamper-proof internal adjustment, the torque screwdrivers have no external adjustment scale and must be preset using a torque tester. Mountz also offers the TLS torque screwdrivers in clean-room configuration. The clean room screwdrivers are manufactured to comply with Class 100 Clean Room standards and are polished and sealed with a PTFE-impregnated anodised coating, creating a tool claimed to be nearly 40 times as clean as off-the-shelf torque tools.

Controlling torque is essential for companies to ensure their product's quality, safety and reliability isn't compromised. Fasteners that are insufficiently fastened can vibrate loose and excessive torque can strip threaded fasteners. The cam-over philosophy of each Mountz torque screwdriver prevents operators from influencing the torque output when tightening fasteners.

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