LiftMaster Sprocket Kit w/ 42-Tooth 1" x 1/4" Keyway - 71-1550B42LGH

Details

LiftMaster Sprocket Kit w/ 42-Tooth 1" x 1/4" Keyway - 71-1550B42LGH

The LiftMaster 71-1550B42LGH is a 42-tooth sprocket kit with a 1-inch bore and 1/4-inch keyway, compatible with #50 chain setups. It serves as a door sprocket in Maxum Standard and Extended Duty JDC/JHDC units, as well as Logic 4.0 and 5.0 commercial operators. This kit includes the shaft key and is intended for installations requiring slower or more controlled door movement. Always refer to the sprocket selection tables in your operator's manual for proper sizing.

Specifications

• Tooth Count: 42
• Bore: 1 inch
• Keyway: 1/4 inch
• Chain Size: #50
• Compatibility: Maxum JDC/JHDC, Logic 4.0/5.0
• Includes: Shaft key