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LiftMaster Commercial Operator · Installation & Repair

MT Medium-Duty Trolley Operator — Installation & Repair

Ceiling-mount trolley for standard-lift sectional doors with mid-range duty cycles — South Florida service

The LiftMaster MT is a medium-duty trolley operator for standard-lift sectional overhead doors with mid-range duty-cycle requirements — suspended from the ceiling, directly attached to the door, and rated at 12 cycles per hour. Joe’s Doors installs and services the MT throughout Miami-Dade, Broward, Palm Beach, Collier and Lee counties.

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LiftMaster MT Medium-Duty Trolley Operator
12/hr · <50/dayDuty Cycle
SectionalDoor Type
Ceiling TrolleyInstallation
Disconnect TrolleyManual Backup
Standard LiftDoor Style
120VSingle Phase
About This Operator

The Everyday Commercial Trolley

The MT is the straightforward answer for standard-lift sectional doors in auto shops, firehouses, small warehouses, and municipal buildings: a ceiling-suspended trolley operator that directly attaches to and controls the door, rated for 12 cycles per hour and under 50 cycles per day. Its trolley disconnect disengages the operator for manual lifting in an emergency, and it accepts standard commercial control stations, photo eyes, and safety accessories. View full specs on LiftMaster.com ↗
LiftMaster MH Medium-Duty Hoist Operator
LiftMaster MT ready for professional installation
Professional Installation

MT Installation in Miami & Broward

We hang the MT with proper ceiling suspension, align the rail to the door’s travel, verify balance before automation, and commission photo eyes and controls — a tidy, code-compliant trolley install, typically in one visit.
  • Engineered ceiling suspension & rail alignment
  • Door balance verified before automation
  • Photo eyes & control stations wired
  • Trolley disconnect tested for emergency release
Schedule Installation
Repair & Service

MT Repair You Can Count On

MT stalling on the rail, chain slapping, or reversing at the floor? We repair medium-duty trolleys same-day where possible — rail, trolley, motor, and control repairs with parts on the truck.
  • Rail & trolley repairs
  • Chain / belt tensioning & replacement
  • Motor & control service
  • Preventive maintenance plans
Call for Same-Day Repair
LiftMaster MGJ Medium-Duty Gear-Reduced Jackshaft
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Good to Know

MT — Common Questions

What doors does the MT run?Standard-lift sectional overhead doors with mid-range duty needs — the classic ceiling-trolley setup for shops and small commercial buildings.
How do we open the door if power fails?Pull the trolley disconnect to disengage the operator and lift the door manually; re-engage when power returns.
What duty cycle is it rated for?A maximum of 12 cycles per hour and fewer than 50 cycles per day. Heavier traffic calls for the GT gearhead trolley.
Can you replace my old trolley operator with an MT?Yes — MT retrofits onto most existing standard-lift sectional doors in a single visit. Call 954-799-9787 to schedule.