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…
Designed for high production environments, electric screwdrivers with a high performance brushless motor design provides durability and reduces the standard maintenance costs for standard electric screwdrivers. Management in power tools ensures product quality, cost savings and a reduction in overall failures. Standard Electric Screwdrivers (with Brushes) These ordinary models use brushes and over time there’s…
A manufacturer of heavy-duty trailer suspensions was looking for a way they could verify torque and tension on suspension bolts used on current products and on new products that were in development. The manufacturer was experiencing quality control issues, which were causing production delays and rework expenses. Upon further investigation, the quality control manager traced…
Historical approaches to working with heavy-duty threaded fasteners have aimed at sheer torque power, using long lever arms and heavy hammers on slugging wrenches. More recently, the hydraulic wrench has been viewed as the solution to many problems that require serious torque. But hydraulic wrenches are notorious for their heavy ratchets, bulky compressors and laborious…
TSN cam-over torque wrenches are designed to provide reliable and precise torque control for bolting applications that do not tolerate over-torque conditions. Improper torque control increases manufacturing costs and delays. Using cam-over wrench removes the operator influence out of the fastening process and offers precision and repeatable torque results. A standard click wrench cannot ensure…
Any manufacturing application that requires a threaded fastener to be tightened needs torque control. The cam-over philosophy of each Mountz hand torque screwdriver prevents a fastener or bolt from being under and over tightened. These torque tools are ideal for fastening applications where over-torque conditions are not tolerated. As a quality control tool, the torque…
Deep down in a coal mine, the foreman faced lengthy and costly dilemmas for two key maintenance applications. The first maintenance application was for removing and re-tightening the bolts during the servicing process for “Mining Heads” used on the industrial machines attached to the vehicles underground. The “Mining Heads” are used to channel through rock…
Torque wrenches go out of calibration with use. Verifying the accuracy of a torque wrench is a key quality measurement that must be taken for a successful outcome. Two accepted methods may be used. Verification is a process step to validate if the wrench is in or out of calibration. This test can be conducted…
A manufacturer of large industrial gas engines had a torque application for fastening an industrial engine block in a washing chamber after the milling process. The large gas engines are designed and built for demanding applications in waste water treatment plants, power plants, oil & gas fields and other energy applications all over the world.…
Joint relaxation occurs to some extent in all fastened joints. It is caused by the surface of part(s) embedding or by “soft parts” such as gaskets, plastics or spongy material, which collapses under the clamping force created in a torque fastening condition. For correctly designed joints, relaxation is small and can be virtually ignored. However,…