OTBH

Heavy-Duty Commercial Trolley Operator With Solenoid Brake

25 CYCLES/HOUR 80 CYCLES/DAY

The OTBH is a low headroom trolley operator designed for use on industrial standard lift sectional doors. It incorporates a drum-band type solenoid brake.The operator is available with the new Electronic Control Board (BOARD 070) with or without the option of electrical control for MONITORED external entrapment protection devices (UL325-2010 compliant).


STANDARD FEATURES

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

Reduction:
First step in reduction 5L/B V-belt drive, additional step by #41 chain and sprockets. Input shaft is 5/8", supported by precision ball bearings. Output shaft is 1", supported by ball bearings. Output shaft speed: 120 rpm for a door travel of 12"/s.

Drive and Trolley Assembly:
#48 (#410) full roller chain drive on 1/2 HP and #41 full roller chain drive on 3/4, 1 HP. Dual, 12 gauge, pre-drilled galvanized tracks provided for doors up to 12Ft in height standard. Additional track lengths are available (max. door height acceptable for the operator limit system is 30Ft). Track spacers 3/4" steel shaft. Trolley made of cast aluminum alloy with chain tension adjustment device.

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

Brake:
Electrically activated drum-band type solenoid brake.

Manual Operation:
Quick release disconnect arm for manual push-up operation.

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

Limit System:
Rotary-type oil-impregnated 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. All shafts protected by yellow chromate coating.

Mounting (Low Headroom Design):
Ceiling-mounted with only 6.25" headroom clearance required below the tracks. For indoor use only.

Dimensions:
Back Room: door height + 4'5" (1350 mm)
Head Room For Tracks: 5.625" (143 mm) above the highest point of door travel
For more details, please consult our Dimensions Drawing.

Shipping Weight:
Approx. 73 Lbs - 33 Kg + tracks.

Warranty:

2 Years, per section 6 of our Terms and Conditions of Sale.

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