Maximum door area (sq. ft.), Weights and dimensions – LiftMaster J door operator User Manual
Page 14
14
HOIST AND JACKSHAFT
MAXIMUM DOOR AREA (SQ. FT.)
MODELS J, H, AND HJ
SECTIONAL
22 ga.
Steel
Alum.
Doors
24 ga.
22 ga.
Steel
Alum.
Doors
---
285
350
500
625
24 ga.
Steel
Alum.
Grilles
---
Fiberglass
Doors
---
310
400
560
640
---
---
20 ga.
Steel
Wood
Doors
24 ga.
Steel
Insul.
260
320
450
560
20 ga.
18 ga.
Steel
Steel
Grilles
---
---
---
210
280
380
475
---
---
---
---
16 ga.
Steel
Insul.
125
200
250
310
1/3 HP
1/2 HP
3/4 HP
1 HP
ROLLING
16 ga.
Steel
---
16 ga.
Steel
---
20 ga.
Steel
Insul.
175
250
325
400
MODEL GH
SECTIONAL
22 ga.
Steel
Alum.
Doors
24 ga.
22 ga.
Steel
Alum.
Doors
---
300
430
560
---
---
---
24 ga.
Steel
Alum.
Grilles
---
Fiberglass
Doors
---
325
480
650
---
---
---
---
---
20 ga.
Steel
Wood
Doors
24 ga.
Steel
Insul.
275
390
500
680
---
---
20 ga.
18 ga.
Steel
Steel
Grilles
---
---
---
250
340
430
540
640
875
---
---
---
---
16 ga.
Steel
Insul.
175
225
300
375
460
620
1/2 HP
3/4 HP
1 HP
1-1/2 HP
2 HP
3 HP
5 HP
ROLLING
16 ga.
Steel
---
16 ga.
Steel
---
20 ga.
Steel
Insul.
225
275
325
425
560
840
Call for specifications
Operator specifi cations/Maximum door area - Hoist and Jackshaft
MECHANICAL
DRIVE REDUCTION:
Model J, H, and HJ . . . . . . . . Primary: Heavy duty (5L) V-Belt
Secondary: #48 chain/sprocket;
Output: #50 chain
Model GH . . . . . . . . . . . . Primary: 45:1 for 1/2, 3/4 and 1 HP
Worm gear-in-oil bath gear reducer 44:1 for 1-1/2 and 2 HP
42:1 for 3 HP
Output: #50 chain
OUTPUT SHAFT SPEED:
Model J, H and HJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 RPM
Model GH . . . . . . . . . . . . . . . . . . . . 38.3 for 1/2, 3/4 and 1 HP
39.2 for 1-1/2 and 2 HP
41.1 for 3 HP
DOOR SPEED:
Model J, H and HJ . . . . . . . 8-9" per second depending on door
Model GH . . . . . . . . . . . . . 8-9" per second depending on door
BRAKE: . . . . . . . . . . . . . . . . . . . . . Solenoid actuated disc brake
BEARINGS . . . . . . . . . . . . . .Output Shaft: Shielded Ball Bearing
Clutch Shaft: IronCopper sintered and oil impregnated
Models H and HJ ONLY
HAND CHAIN WHEEL: . . . . . . . . . . . . . . . . .Left or right handing
Models H and HJ ONLY
HOIST WHEEL: . . . . . . . Standard mounting on left or right side
OPERATOR SPECIFICATIONS