LiftMaster Model J
Industrial-duty jackshaft for high-lift and vertical-lift sectionals, rolling doors, and grilles.
Call 901-314-4465 for a commercial quote.
Pick this when…
- You need a side-mount jackshaft — not a ceiling trolley (that is T).
- You do not need a floor-level chain hoist — that is H.
- The door can be lifted by hand in an emergency or power outage (sell sheet).
- Industrial Logic 5.0 class — not a medium-duty MJ / MH.
- Logic 5.0 industrial family — see the Logic 5.0 family sheet.
At a glance
- Duty: up to 25 cycles/hour · 80–90/day (J sell sheet)
- Motor: 1/3, 1/2, 3/4, and 1 HP · single- or three-phase
- Voltage: 115/230V single-phase · 208/230/460V three-phase · 575V discrete
- Logic 5.0: MyQ monitor/control · Security+ 2.0 · UL 325
- Battery: None in the operator — door must be balanced for hand lift
Specs
| Style | Jackshaft — attaches to the door shaft |
|---|---|
| Duty | Up to 25/hour · 80–90/day |
| Motor | Continuous-duty · 1/3–1 HP |
| Voltage | Selectable within phase (115/230 1PH · 208/230/460 3PH) · 575V discrete |
| Control | Factory C2 · 7 wiring types including timer-to-close · 5V DC Class 2 |
| Radio | On-board Security+ 2.0 · up to 90 single-button or 30 three-button remotes |
| Drive | 5L V-belt first stage · #48 chain · #50 output |
| Brake | Standard on 3/4 and 1 HP (optional 1/2 · not on 1/3) |
| Disconnect | Floor-level disconnect for manual lift |
| Warranty | Two years (manufacturer) |