LiftMaster #50 Chain 24-Tooth Sprocket – 1″ Bore, 1/4″ Keyway
LiftMaster #50 Chain 24-Tooth Sprocket – 1″ Bore, 1/4″ Keyway
Replacement sprocket for compatible commercial garage door drive assemblies requiring #50 roller chain, 24 teeth, a 1-inch shaft bore, and a 1/4-inch keyway. It transfers rotation through the chain-drive system, with a keyed connection between the sprocket and shaft.
Specifications
| Specification | Detail |
|---|---|
| Chain size | #50 roller chain |
| Tooth count | 24 |
| Bore diameter | 1″ |
| Keyway width | 1/4″ |
| Application | Compatible commercial garage door drive systems |
Compatibility and Selection
Match all four specifications to the existing sprocket or the operator manufacturer’s parts diagram. Also verify hub length, sprocket offset, retaining hardware, and available clearance.
This version fits a 1-inch shaft. Confirm the bore measurement carefully when selecting between similar sprockets.
Keep the manufacturer-specified tooth count. Changing sprocket size can alter the drive ratio, door speed, and available torque.
Installation Notes
Inspect the chain, mating sprocket, shaft, and key for wear before installation. Align the sprockets and set chain tension according to the operator manual. Confirm the required key and retaining hardware before starting; their inclusion is not specified.
Safety Warnings
Disconnect and lock out operator power, and secure the door against movement before servicing. Keep hands, clothing, and tools clear of chain and sprocket pinch points.
Do not loosen spring-system components or shaft hardware under load. Reinstall all guards before restoring power, then test travel limits, door operation, and safety devices according to the manufacturer’s instructions.
Professional installation is recommended.
Details
Need Help With Compatibility?
Not sure if this is the correct part for your garage door, operator, gate system, or application? Contact Us before ordering — we’re happy to help.
Garage-DoorParts.com carries a large selection of residential and commercial parts, and many components can look similar while having important differences in dimensions, model numbers, voltage, mounting, or compatibility.
For the best assistance, please provide as much information as possible, including the manufacturer, model number, part number, door or operator type, dimensions, and clear photos of the existing part or equipment.
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