The LiftMaster 716125 Tensioner Chain 1-1/4" Adjustable w/ Bearing is an OEM chain-tensioning assembly engineered to keep drive chain slack under control on LiftMaster commercial door operators. The adjustable design lets a technician set proper chain tension to help reduce vibration, noise, and premature wear across sprockets and drive components. A built-in bearing supports smooth idler movement and consistent chain tracking, contributing to reliable operation on heavy-duty overhead door and jackshaft systems commonly found in warehouse, industrial, and commercial facilities.
As a genuine LiftMaster replacement part, 716125 is intended for use on compatible LiftMaster commercial operators that specify this exact part number in their parts diagram or service manual. Installation should be performed by qualified personnel; always disconnect power, relieve chain load, and follow the operator’s maintenance and safety procedures when adjusting chain tension. For best results, verify compatibility by cross-referencing your operator’s documentation with part 716125 before ordering or replacing. This component supports routine maintenance and repair tasks for chain-driven LiftMaster commercial door operators where an adjustable, bearing-equipped chain tensioner is required.