Maximum Door Area; Operator Specifications - Chamberlain GH Installation Manual

OPERATOR SPECIFICATIONS

MECHANICAL
DRIVE REDUCTION:
Model J, H, and HJ . . . . . . . . Primary: Heavy duty (5L) V-Belt
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
OUTPUT SHAFT SPEED:
Model J, H and HJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 RPM
Model GH . . . . . . . . . . . . . . . . . . . . 38.3 for 1/2, 3/4 and 1 HP
MAXIMUM DOOR AREA (SQ. FT.)
MODELS J, H, AND HJ
24 ga.
22 ga.
Steel Steel
Alum. Alum.
Grilles
Doors
24 ga.
---
22 ga.
Steel
Fiberglass
Alum.
Doors Doors
--- ---
310 285
1/3 HP
400 350
1/2 HP
560
500
3/4 HP
640 625
1 HP
Operator specifi cations/Maximum door area - Hoist and Jackshaft
Secondary: #48 chain/sprocket;
Output: #50 chain
42:1 for 3 HP
Output: #50 chain
39.2 for 1-1/2 and 2 HP
41.1 for 3 HP
--- 16 ga.
20 ga.
Steel
18 ga.
---
Steel
---
Steel ---
---
Grilles
20 ga.
16 ga.
---
Steel Steel
---
Wood ---
---
---
Doors
24 ga. 20 ga.
---
16 ga.
Steel Steel
Steel
Insul. Insul.
Insul.
260 210 175
125
320 250
280
200
450 325
380
250
560 400
475
310
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
HAND CHAIN WHEEL: . . . . . . . . . . . . . . . . .Left or right handing
HOIST WHEEL: . . . . . . . Standard mounting on left or right side
MODEL GH
24 ga. 22 ga.
Steel
Steel
Alum.
Alum.
Grilles Doors
24 ga.
--- 22 ga.
Steel
Fiberglass Alum.
Doors
Doors
---
---
325
300
1/2 HP
480 430
3/4 HP
650
560
1 HP
--- ---
1-1/2 HP
--- ---
2 HP
--- ---
3 HP
5 HP
Call for specifications
14
Models H and HJ ONLY
Models H and HJ ONLY
--- 16 ga.
20 ga.
Steel
18 ga.
---
Steel
--- ---
Steel
---
Grilles
20 ga. 16 ga.
---
Steel Steel
---
Wood
--- ---
---
Doors
24 ga.
--- 20 ga.
16 ga.
Steel Steel
Steel
Insul.
Insul.
Insul.
275 225
250
175
390
340 275
225
500 325
430
300
680 540 425
375
--- 560
640
460
--- 875 840
620