#50 Chain Sprocket – 24 Teeth – 1-1/4″ Bore – 1/4″ Keyway
#50 Chain Sprocket – 24 Teeth – 1-1/4″ Bore – 1/4″ Keyway
Replacement chain sprocket for compatible commercial garage door drive systems requiring a 24-tooth sprocket with a 1-1/4-inch bore and 1/4-inch keyway. The sprocket engages #50 roller chain to transfer rotation through the door’s drive system.
Specifications
| Specification | Detail |
|---|---|
| Chain size | #50 roller chain |
| Tooth count | 24 |
| Bore diameter | 1-1/4″ |
| Keyway width | 1/4″ |
| Application | Compatible commercial garage door chain-drive systems |
Compatibility and Selection
Match the chain size, tooth count, shaft diameter, and keyway to the existing assembly or manufacturer’s parts diagram. Also confirm hub dimensions, sprocket offset, and clearance before ordering.
A sprocket with a 1-inch bore will not fit a 1-1/4-inch shaft. Changing the tooth count can alter the drive ratio and door speed; use the size specified for your installation.
Installation Notes
Inspect the chain, mating sprocket, shaft, and key for wear before installation. Align the sprockets and adjust chain tension according to the operator manual. Verify which key and retaining hardware are required; their inclusion is not confirmed.
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. Reinstall all guards before restoring power, then test door travel, limits, and safety devices.
Professional installation is recommended. Do not loosen spring-system components or shaft hardware under load.
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.
Our goal is to help you identify the correct product before you order and reduce the possibility of ordering an incompatible part.
Contact Us with your product questions and compatibility information, and we’ll do our best to point you in the right direction.
Shipping & Returns
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