Medium Duty Jackshaft


Medium-Duty Jackshaft Operator

  • For use on smaller, lighter commercial doors with mid-range duty-cycle requirements.
  • Rated duty cycle: Maximum 12 cycles per hour; Less than 50 cycles per day.
  • Floor level disconnect disengages operator manual lifting in an emergency.
  • Wall mount for high or vertical lift sectional doors or small rolling doors and grilles.

 LiftMaster Model MJ Product Guide

Business Safety and Security

Built-in 3-Channel Security+ Receiver allows you to learn/program up to 20 LiftMaster 315 MHz remote controls.

Meets UL 325 Safety Standards.

Protect people and vehicles with safety sensors and accessories that stop the door from closing on obstructions.

Integrated timer-to-close programmable from 5 to 60 seconds in 5-second increments. Allows for timed automatic door closure after the door reaches the full open position.

Commercial Power

1/2 HP, 115V single-phase motor

24V NEC Class 2 control circuit

Commercial Accessories

Single button control provides an additional input for single-button control functionality. Required for installation of any external radio receiver.

Auxiliary limit switches provide additional limit switches with dry form C contacts at the open and closed door positions to control lights, heaters and dock levelers.

Interlock switch disables the operator control circuit when door is locked, preventing damage to the door and operator.

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You don’t need to settle for a second-rate garage door repair company or attempt to tackle a challenging and dangerous project yourself. The experienced professionals at Viking Overhead can remove the burden from your shoulders. Let us prove our commitment to you and show you how we make our customers feel like a part of our family. Contact us to schedule a service call or request a free estimate today.

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