The LiftMaster 15-48B10GXX is an OEM drive sprocket used in the chain transmission of select LiftMaster commercial door operators. Identified as 48B10T with a 3/4-inch bore, it provides positive engagement between the operator output shaft and drive chain to move sectional or rolling doors smoothly and reliably. As a genuine LiftMaster replacement part, this 10-tooth sprocket is engineered to restore proper chain tracking and torque transfer when the original component becomes worn or damaged.
This sprocket is intended for commercial and industrial chain-drive applications where the 15-48B10GXX part number is specified by the operator’s parts list or service manual. The 3/4-inch bore and 10-tooth configuration should match the existing drive components on the unit; verify the tooth count and chain/pitch designation (48B10T) against your operator documentation before ordering. For safe installation, disconnect power, secure the door, align the sprocket to the mating chain, and set chain tension per LiftMaster service procedures. Using the correct LiftMaster sprocket helps maintain reliable opener performance in demanding environments.