Genuine LiftMaster 71-1550B10LGH 10-tooth operator sprocket kit, 1 in. bore x 1/4 in. keyway, replaces the 12-tooth drive sprocket to reduce door speed about 20% for the Maxum industrial DC operators.
Fitment: LiftMaster Maxum JDC, RJDC and JHDC operators.
Replaces the 12-tooth drive sprocket to reduce door speed about 20%, or to run a smaller door sprocket at the same speed.
Ordering the right part depends on the full model number, which is printed on the operator label. Call GateHouse Supplies if you are not sure — we service these units every day.
