LiftMaster 72-Tooth Sprocket for #50 Chain – 1" Bore, 1/4" Keyway
LiftMaster 72-Tooth Sprocket for #50 Chain – 1" Bore, 1/4" Keyway
Replace a worn door-drive sprocket with this LiftMaster 72-tooth sprocket. It accepts #50 roller chain and fits a 1" shaft with a 1/4" keyway.
Specifications:
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Tooth count: 72
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Chain size: #50
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Shaft bore: 1"
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Keyway: 1/4"
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Brand: LiftMaster
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Included mounting hardware: Two set screws
This sprocket is listed for specified LiftMaster MAXUM JDC and JHDC commercial operator configurations. The appropriate sprocket depends on the operator series, door type, door weight, drum arrangement, and desired operating speed.
Verify the complete manufacturer specification before purchasing. This 1" bore version is different from the comparable 1-1/4" bore model. A different tooth count should not be substituted simply because the sprocket fits the shaft.
Have a qualified technician install the sprocket with operator power disconnected and locked out. Inspect the chain and mating sprocket, confirm alignment, adjust chain tension, and complete the manufacturer’s operational checks.
Order this 72-tooth sprocket when your approved configuration requires #50 chain, a 1" bore, and a 1/4" keyway.
LiftMaster 72-Tooth #50 Chain Sprocket – 1" Bore
Shop the LiftMaster 72-tooth sprocket with a 1" bore and 1/4" keyway for compatible MAXUM commercial door systems.
Details
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