The LiftMaster K08-11012 Bevel Gear (5/8 in ID) is an OEM replacement component used in the gear train of select LiftMaster commercial door operators. This bevel gear transfers drive power at a 90-degree angle between intersecting shafts, helping restore smooth, dependable motion in jackshaft, hoist, or trolley-style operator assemblies commonly used on commercial and industrial doors. Identified by part number K08-11012, it features a 5/8 in bore to mount on a matching shaft and is engineered for a factory-accurate fit and alignment with compatible LiftMaster systems.
Use this genuine LiftMaster replacement gear to remedy wear, slippage, or noise in the operator’s drivetrain. Installation typically involves disassembling the gear housing, aligning the new gear with its mating component to achieve correct mesh and backlash, and reapplying manufacturer-approved lubricant; no programming is required since this is a mechanical part. For safety, disconnect power and follow lockout/tagout procedures, and have service performed by a qualified technician. Verify compatibility by referencing your operator’s parts diagram or service manual and matching the K08-11012 part number and 5/8 in ID specification to your unit.