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50B12 12-Tooth #50 Roller Chain Sprocket – 1" Bore, 1/4" Keyway -
4L310 V-Belt – 1/2" x 31" FHP Drive Belt -
LiftMaster #50 Chain 50-Tooth Sprocket – 1-1/4" Bore, 1/4" Keyway -
LIFTMASTER 50 CHAIN 16 TOOTH SPROCKET 1-1/4" BORE, 1/4" KEYWAY -
4L250 V-Belt – 1/2" x 25" -
5L300 V-Belt – 5/8-Inch Wide x 30-Inch Outside Length -
50B30 30-Tooth #50 Roller Chain Sprocket – 1" Bore, 1/4" Keyway -
V-Belt 3L210 - 3/8" x 21" -
LiftMaster #50 Chain 16-Tooth Sprocket – 1" Bore with 1/4" Keyway -
3L310 V-Belt – 3/8-Inch Wide x 31-Inch Outside Length for Commercial Garage Door Operators -
LiftMaster 711550B32QGH 32-Tooth #50 Chain Sprocket – 1-1/4" Bore, 1/4" Keyway
Commercial Garage Door Operator Repair Parts
Shop replacement repair parts for commercial garage door operators, rolling steel door operators, and industrial overhead door systems. This collection includes drive sprockets, roller chain components, V-belts, pulleys, gears, shafts, bearings, brake components, electrical parts, and other service items used to repair and maintain commercial operators.
Available parts include multiple sprocket sizes, bore diameters, keyway configurations, belt lengths, and chain types for different operator assemblies. These components are commonly used to replace worn, damaged, slipping, or broken drive-system parts and restore proper operator movement.
Commercial operator repair parts may be used in warehouses, loading docks, automotive facilities, storage buildings, fire stations, commercial garages, and other high-cycle door applications.
Before ordering, verify the operator manufacturer and model, original part number, sprocket tooth count, chain size, shaft bore, keyway size, belt width, belt length, voltage, and mounting configuration. Parts with a similar appearance may have different dimensions and may not be interchangeable.
Commercial garage door operators contain high-tension, heavy, and electrically powered components. Installation and repairs should be completed by a qualified commercial door technician.