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Edmonton 780-448-9498

Calgary 403-770-5625


1/2 HP Commercial / Industrial
Heavy Duty Jack Shaft Overhead Door Opener


60Hz high starting torque, continuous-duty, single phase capacitor start or 3 phase motor, open drip proof, protected againsr overload. Also available with 50Hz 220V 1 phase and 380V 3 phase motor.


First step in reduction 5L/B V-belt drive, additional steps by chain and sprockets. Input shaft is 5/8", supported by precision ball bearings. Output shaft is 1" with 1/4" keyway, supported by cast iron flanged pillow block bearings. Output shaft speed: 41 rpm.


Friction type, positioned on input shaft, easily adjustable from outside.


#50 roller chain with a 50B12 sprocket for the operator drive shaft. Door sprocket selected for a door travel of 6"/s to 12"/s.


Mechanical Brake.

Manual Operation

Hoist-a-matic self-engaging hoise (floor level engagement device is not required to operate) for manual chain operation. An electrical interlock automatically disonnects power to the motor operator when the chain hoist is engaged. Hoist on right is standard.

Electrical Enclosure

All electrical components are in a Nema 1 enclosure. Hinged electrical enclosure cover.

Limit System

Rotary-type oil-imregnated steel cams, commercial grade switches. Limit shaft is supported by self-lubricating bronze bushings for increased precision. Remains in time when there is a manual operation or after the motor has been removed.

Accu-cam Feature

Precise and quick one-handed adjustment of the limits.

Corrosion Protection

Frame and control enclosure protected by baked on, long lasting enamel finish. Polymer control box cover. All shafts protected by yellow chromate coating.


Wall, hood, or shelf mounted on the right or left side of the door.

ECB Units (BOARD 070) (OE):

24VDC relaying circuit with a 40VA class II transformer, non-volatile memory.
Features available:

Contactor Units (OO):

24VAC control circuit, 40VA class II transformer, fuse protected on output, heavy-duty across-the-line linear reversing contractor with mechanical interlock.

Control Accessories

Angled terminal strip allows for the connection of 3-button staions (one supplied with the operator), non-monitored sensing edges, non-monitored photo cells, one push-button radio control (external strip), ceiling pull switches, key switches, loop detectors, external interlocks, plug-in radio card and universal auxiliary output module. 2A fuse protected 24VAC output is available for accessory power supply. NEMA 4/12 for NEMA 4X protected monitored photo cells upgrade available.

Environmental Modifications

NEMA 4/12 and NEMA 4X enclosures. For NEMA 7/9 consult Door Surgeon at 780-448-9498.

Mechanical Accessories

Wall or hood mounting bracket, chain spreader, etc.
For more options contact Door Surgeon at 780-448-9498.

Cycles Ideal For Clearance / Side Room Required
25 cycles / hour Standard Lift 15"
(100 cycles / day) (380mm)

Operator Range and Current Consumption (Amp)

Horse Power 115V
1 HP
1 HP
3 HP
3 HP
3 HP
1/2 8.0 4.0 2.1 1.0 8.0
3/4 11.2 5.6 3.2 1.5 1.2

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