The Chamberlain 41A7276 Wear Pads for Square Rail are OEM replacement glide pads designed for Chamberlain garage door openers that use a square (T-rail) rail assembly. Supplied as a set of four, these pads refresh the contact surfaces between the opener trolley and the rail to help reduce friction and operational noise, prevent premature rail wear, and restore smooth door travel. They are a direct-fit service part for maintaining reliable performance on compatible Chamberlain systems and are a practical fix when the original pads are worn or missing.
This replacement part is intended for Chamberlain openers equipped with square/T-rail assemblies and is also commonly found on select LiftMaster and Craftsman models built by Chamberlain that use the same style rail. Always verify compatibility by checking your opener’s owner’s manual or parts list for part number 41A7276. Installation is a mechanical service task only: disconnect power to the opener, place the door in the disengaged position, relieve chain/belt tension as needed, and install the pads at the locations specified by the manufacturer before retensioning and testing travel. No programming changes are required after replacement; complete a standard safety reversal test and apply manufacturer-recommended rail maintenance as directed in your manual.