LiftMaster Model J

LiftMaster Model J industrial-duty jackshaft — Logic 5.0. Same industrial family as the H, without the built-in chain hoist. 1/3–1 HP · high/vertical lift sectionals, rolling doors and grilles.

Call 901-598-7979 for a commercial quote

LiftMaster commercial · Installed by Advanced Garage Door

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LiftMaster Model J jackshaft operator. Tap to enlarge.

Overview

About the LiftMaster Model J

The LiftMaster Model J is an industrial-duty jackshaft commercial door operator with Logic 5.0. It mounts beside the door (wall or hood) for high-lift or vertical-lift sectionals, and for rolling doors and grilles. Available in 1/3, 1/2, 3/4, and 1 HP — we size horsepower to the door weight and use, not a one-size-fits-all package.

J vs H in plain terms: same class of industrial jackshaft motor. The H adds a built-in floor-level chain hoist for manual operation if power fails. Most commercial jobs want that backup, so we often quote the H. Choose the J when you do not need the hoist on the operator.

Duty: 25 cycles per hour · up to 90 cycles per day (LiftMaster industrial-duty rating)
Power: 1/3 through 1 HP · single- and three-phase voltage options
How you buy it: Quoted and installed by Advanced Garage Door — Memphis-area commercial install

Specifications (LiftMaster)

	LiftMaster J
Style	Industrial-duty jackshaft
Logic board	Logic 5.0
Primary use	High/vertical-lift industrial sectionals; rolling doors and grilles (HP sized to door — 1/3 through 1 HP)
Mounting	Side mount (wall) for vertical or high-lift; wall or hood for rolling/grilles
Rated duty cycle	25 cycles per hour; up to 90 cycles per day
Horsepower options	1/3, 1/2, 3/4, and 1 HP
Voltage	Single-phase 115V / 230V · 3-phase 208V / 230V / 460V · discrete 575V models
Safety	Meets UL 325 · Security+ 2.0 · commercial photo eyes (CPS-U class)
Connectivity	myQ Smart Facility Access / myQ Dock Management (compatible packages)
Timer-to-close	Programmable 5–60 seconds (5-second steps) on Logic 5.0

Source: LiftMaster Model J product page. HP, voltage, and options are confirmed on your written quote.

Features

Logic 5.0 industrial control — programmable timer-to-close, modern commercial safety modes
UL 325 safety standards · Security+ 2.0® rolling code
Commercial photo eyes (CPS-U class) and 3-button station packages as specified
myQ Smart Facility Access — monitor and control facility openings; dock management analytics where equipped
Dual-voltage friendly packaging for job-site power requirements
HomeLink® compatible (v4.0 or higher) on supported setups

When to choose a jackshaft

Use a jackshaft when the door is high-lift or vertical-lift, or when a trolley rail above the door is not practical. For standard-lift sectionals with a ceiling track, a trolley (T) is usually the better fit. Gear-reduced heavy industrial is a step up (GH). Not sure? Call — we match style and HP to the door and building.