Manual screwdrivers work on the same principle by providing a slipping sensation when the specified torque is reached. Electric or pneumatic screwdrivers can be incorporated into workstations to speed up production and reduce repetitive motion injuries and carpal tunnel syndrome. For large fasteners in industrial applications, and powered torque multipliers are often used to replace impact wrenches. Torque multipliers are available that can deliver over 100,000 ft. pounds of torque, with precision, if necessary. Another variable to be considered is whether torque will be applied statically or dynamically.
Static torque is applied by hand and occurs relatively slowly.
Dynamic torque is applied with a power tool at a high rate of speed. The proper selection of dynamic torque tolls helped improve worker comfort and productivity as well as assure product quality for Quickie Designs, a custom manufacturer of motorized and manual wheelchairs, that are produced to meet stringent construction standards. This requires that we meet Good Manufacturing Procedure standards by providing them with torque specs for critical components of the chair. One of the most critical applications on the chair is its wheel lock assemblies. These wheel locks act like parking brakes and permit the user to transfer in and out of the chair without its rolling away.