search button

 RHX® Heavy Duty Commercial Operator 


commercial operator RHX 

The UL 325 2010 compliant RHX® heavy duty commercial operators from Overhead Door Corporation provide easy and reliable operation for the most stringent applications. This functionality comes from many innovative, state-of-the-art performance features.


A wide variety of mounting options are available to fit any application including:

Sectional doors:

Standard, side mount, and dual trolley applications. All models come standard with the DC brake system. Side mount and center mount chain couple or direct couple to the door shaft with hoist. Hoist models are left or right-hand adjustable in the field.

Rolling steel doors:

With hoist, front of hood, top of hood, bench mount and wall mount applications. Hoist models are left or right-hand adjustable in the field.


Continuous duty motor available in 1/2, 3/4, 1 and 3 horsepower, single or three-phase. Totally enclosed non-ventilated (TENV) construction and totally enclosed fan cooled (TEFC) construction units are available as options. 3 horsepower models come standard with (TEFC) construction.

On board radio receiver

This standard feature can add radio functionality to every job with no additional cost for the receiver.  Stores up to 250 CodeDodger® transmitters including the commercial dual frequency cycling versions.

Drive reduction

Primary reduction is worm gear running in oil bath. Secondary reduction is by chain and sprocket.

Mechanical brake system

24V DC disc brake. Fewer mechanical parts for improved reliability.

Clutch (standard with trolley; optional with hoist)

Adjustable disc-type helps protect door and operator from major damage should the door meet an obstruction. (Included in 14 and 26 RPM direct couple mounting kits)

Cycle counter

LCD (Liquid Crystal Display) clearly indicates the exact number of cycles logged for easy maintenance support.

Trolley rail assembly

High strength 2 inch structural angle for added strength and durability.


RHX® operator features a 2-year limited warranty.  See installation manual for complete limitations and details.

Easy limit setting with LimitLock®

An electro/mechanical limit sensor that makes it easy to set and maintain limits.

Voltage freedom with Voltamatic®

One unit for single phase voltages (115/208/230V), one unit for three phase voltages (208/230/460V) and one unit for three phase 575V.

Extra door system durability with Progressive Braking*

DC brake system brings the door to a soft stop for less wear and tear on the system.

* Patents # 6,737,823 and 6,388,412


RHX® Trolley – Sectional Door
  - standard, side mount or dual trolley

RHX® Jackshaft – Sectional Door
  - side mount, center mount, chain or direct couple

RHX® Hoist – Rolling Steel
  - front of hood, top of hood, bench mount or wall mount

All RHX® Heavy Duty models available in:

  • Single phase 115/208/230V
  • Three phase 208/230/460vV
  • Three phase 575V
  • 1/2, 3/4, and 1 HP

Direct coupling (optional on sectional doors only)

Provides fast, easy installation and prevents chain slacking.  Available as on optional kit for sectional side/center mount and hoist units. For sectional, options include:

  • 14 RPM kit
  • 26 RPM kit

Adjustable shaft

Output shaft of the optional direct coupling kits can be moved from one side to the other, providing flexible installation options.

NEMA 4/4X operators

Available for wet, dusty and corrosive environments.

New CodeDodger® commercial dual frequency cycling transmitters

Available in 1, 2, 3, 4-button and Open/Close/Stop versions. Automatically operates at both 315 and 390 Mhz every time a button is pressed.

Accessories for RHX®


interface modules

Auxiliary Output Module - this plug-in module will provide several auxiliary sets of dry contacts that are microprocessor controlled. Outputs can be configured using the on-board keypad.

To maintain compliance when using a sensing edge as a primary safety device with our X-Series commercial operators labeled UL 325 2010, you must use one of the following modules:

timer to close module

Timer to Close Module - provides auxiliary control inputs, auxiliary safety inputs, auxiliary timer hold input, and an automatic door closing feature with a user-selectable time-delay. Safety inputs can be enabled or disabled using the on-board keypad. A sensing device must be used with this module.

monitored edge interface module

Monitored Edge Interface Module – provides an interface between two-wire monitored sensing edges and our X-Series operators. This module allows for the connection of a two-wire monitored sensing edge to be connected to the ODC STB terminals. Compatible for use on Miller Edge electronic two-wire monitored edge models ME, MT and MU.


transmitter for electrical operator

The RSX® and RHX® operators feature a built-in Radio Receiver System that can store up to 250 transmitters, giving the customer the ability to identify which transmitters have been operating the door. Radio transmitters may be single-button, two-button, three-button, four-button, or Open/Close/Stop. They are easily programmed or erased using the LCD display. The patented CodeDodger® technology cycles between 315 and 390 MHz with the touch of a button.


small motor for operator RHX

The following motors are available when specified:
Totally Enclosed Non Ventilated (TENV)
Totally Enclosed Fan Cooled (TEFC)

Sensing Devices

safety stripe

Bottom Sensing Edge - stop and reverses the door upon contact with an obstruction.

safety beam

Safe-T-Beam® - senses an obstruction and signals the operator to stop or reverse the door. Commercial Photo Eye Kit® - metal enclosure further protects Safe-T-Beam® photo eyes from damage.

NEMA 4/4X photo eyes

VITECTOR® NEMA 4/4X OPTOEYE is a set of infrared transmitter and receiver safety sensors constructed of durable materials to withstand the toughest environments including commercial and industrial applications.

monitored retro-reflective photo-eye

Monitored Retro-reflective Photo-eye - This photo-eye utilizes interference reduction technology, that enables further reduction of interference from reflective surfaces.