Publicidad
Idiomas disponibles
Idiomas disponibles
Door Sprockets (JDC/JHDC Operators)
NOTE: The latest Installation Manual can be found at liftmaster.com.
SECTIONAL DOORS
Recommended Sprocket by Drum Diameter and Desired Door Speed
Drum
Diameter
(Large
end of
Conical
Tooth
Drum)
Count
4"
16-Tooth
5.25"
22-Tooth
5.75"
24-Tooth
6.375"
32-Tooth
8"
8.5"
24-Tooth
11"
32-Tooth
13.5"
42-Tooth
UNINSULATED ROLLING DOORS 20'
Sprocket
Operator
Tooth Count
50
700
1200
72
2200
82
IF YOU ARE UNSURE ON THE DRUM DIAMETER, THE BELOW TABLE HELPS IDENTIFY THE
BEST RECOMMENDATION BY OPERATOR.
Operator Series
700
700
1200
1200
2200
2200
For 12 in/sec
1 in. Bore,
1/4 in. Keyway
71-1550B16LGH
71-1550B22LGH
71-1550B24LGH
71-1550B32LGH
71-1550B24LGH
71-1550B32LGH
71-1550B42LGH
Door Weight
Up to 450 lbs
450 up to 700 lbs
700 up to 1200 lbs
1200 up to 1800 lbs
1800 up to 2200 lbs
Drum
Desired Door
Diameter
Speed
Not Sure
12"/sec
Not Sure
9"/sec
Not Sure
12"/sec
Not Sure
9"/sec
Not Sure
12"/sec
Not Sure
9"/sec
Sprocket for Desired Speed
1.25 in. Bore,
Tooth
Count
1/4 in. Keyway
71-1550B16QGH
22-Tooth
71-1550B22QGH
32-Tooth
71-1550B24QGH
34-Tooth
71-1550B32QGH
42-Tooth
71-1550B32QGH
71-1550B24QGH
34-Tooth
71-1550B32QGH
42-Tooth
71-1550B42QGH
56-Tooth
INSULATED ROLLING DOORS 20'
Operator
700
1200
2200
* Sprockets will no longer be included in the box.
Sprocket Tooth
Count
22
32
22
32
32
42
4
For 9 in/sec
1 in. Bore,
1.25 in. Bore,
1/4 in. Keyway
1/4 in. Keyway
71-1550B22LGH
71-1550B22QGH
71-1550B32LGH
71-1550B32QGH
71-1550B34LGH
71-1550B34QGH
71-1550B42LGH
71-1550B42QGH
71-1550B34LGH
71-1550B34QGH
71-1550B42LGH
71-1550B42QGH
71-1550B56LGH
71-1550B56QGH
Sprocket
Door Weight
Tooth Count
60
Up to 450 lbs
72
450 up to 900 lbs
82
900 to 1500 lbs
90
1500 up to 2000 lbs
1 in. Bore, 1/4 in.
1.25 in. Bore, 1/4
Keyway
71-1550B22LGH
71-1550B22QGH
71-1550B32LGH
71-1550B32QGH
71-1550B22LGH
71-1550B22QGH
71-1550B32LGH
71-1550B32QGH
71-1550B32LGH
71-1550B32QGH
71-1550B42LGH
71-1550B42QGH
in. Keyway
Publicidad
