LiftMaster JDC LiftMaster MAXUM DC Commercial Door Operator FAQ s - English - Page 4

Sprocket Lists Sectional Doors - Recommended Drum/Sprocket Configuration for 12"/second Door Speed Operator 700 1200 2200 Door Type Standard Hi Lift Standard Vertical Standard Hi Lift Hi Lift Standard Vertical Hi Lift Standard Hi Lift Vertical Drum* D400-96 D400-54 D400-144 D850-132 D5250-18 D525-54 D575-120 D525-216 D1100-216 D6375-164 D800-384 D800-120 D1350-336 Sprocket** 16 22 32 42 *maximum height depending on drum choice/max 32 feet **number of teeth Uninsulated Rolling Doors Operator Sprocket Door Weight 700 1200 2200 50 Up to 450 lbs. 450 up to 700 lbs. 72 700 up to 1200 lbs. 1200 up to 1800 lbs. 82 1800 up to 2200 lbs. Insulated Rolling Doors Operator 700 1200 2200 Sprocket 60 72 82 Door Weight Up to 450 lbs. 450 up to 900 lbs. 900 up to 2200 lbs.