LiftMaster Replacement Motors

All Security Equipment carries LiftMaster replacement motors and motor service kits for LiftMaster commercial door operators and sliding gate operators. The range covers commercial door operator motors from 1/3 to 3 HP in single-phase and 3-phase versions, slide gate motors for SL585 and SL595 models, and motor, gearbox and encoder service kits for J/JH and T operators. Installers, facility managers and gate technicians can match a LiftMaster motor to the operator already in place.

Start with the model and part number on the existing operator, then compare horsepower, voltage, phase and enclosure type. Most product names list the operator model or the motor's ratings, so the match can be confirmed before ordering.

What is a LiftMaster replacement motor?

A LiftMaster replacement motor is the drive motor for a specific LiftMaster door or gate operator, sold as a separate part so the operator can be repaired instead of replaced. Some listings are the motor alone; others are service kits that pair the motor with the gearbox and encoder for one operator model. Each motor is rated for a set horsepower, voltage and phase, so the replacement has to match the operator it goes into.

LiftMaster motors for commercial doors and sliding gates

Commercial and industrial door operator motors

Most of this collection covers motors for LiftMaster commercial and industrial door operators. Options run from 1/3 to 3 HP, in 115/230V single-phase and 230/460V or 575V 3-phase versions, with totally enclosed fan-cooled (TEFC), NEMA 4X (N4X) and explosion-proof (EP) enclosures. For jackshaft operators, the LiftMaster Motor, 1/2HP, 120V, MGJ fits the MGJ operator. For 3-phase installations, the LiftMaster MOTOR, 1HP, 230/460V, 3PH, BM is one of the 1 HP options.

Electrical motors are also listed for LiftMaster LM1600, LM2000, LM2800 and LM3600 models, such as the LiftMaster Motor, Electrical, 120VAC, LM2000.

LiftMaster sliding gate operator motors

For LiftMaster sliding gate operators, the collection includes model-specific motors such as the LiftMaster Motor for SL585501U and the LiftMaster Motor for SL595101U Models. Motors for INSL24UL and IHSL24UL operators, the LiftMaster 24V Motor and DC motors rated at 12VDC are also available. The operator model on the unit decides which motor fits.

LiftMaster motor, gearbox and encoder service kits

Service kits replace the motor together with the gearbox and encoder on LiftMaster J/JH and T operators. Kits are listed by operator version and shaft type: the LiftMaster Motor, Gearbox & Encoder Service Kit (J/JH 700 non-3in Shaft), the LiftMaster Motor, Gearbox & Encoder Service Kit (J/JH 1200 non-3in Shaft) and the LiftMaster Motor, Gearbox & Encoder Service Kit (T 1200). The operator version and shaft type on the existing unit decide which kit fits.

How to choose the right LiftMaster replacement motor

Operator model and part number: Find the model on the operator's label and match it to the product name, such as SL595101U or MGJ. If the original part number is on the motor, compare it with the SKU on the product page.
Horsepower: Choose the same rating as the original motor. A 1/2 HP motor such as the LiftMaster 1/2HP Motor, 120V replaces another 1/2 HP motor.
Voltage and phase: Check whether the operator runs on 115/230V single-phase or 230/460V or 575V 3-phase power, and match it exactly.
Enclosure: TEFC, NEMA 4X and explosion-proof versions are listed separately. Pick the one that matches the original motor and the site.
Motor only or service kit: For J/JH and T operators, decide whether to replace the motor alone or the motor, gearbox and encoder together.
Other operator parts: For control boards, batteries and other parts, browse gate opener and operator parts or commercial door operator parts.

How much does a LiftMaster motor cost?

LiftMaster motor price depends on the operator, the horsepower and whether the listing is a motor or a full service kit. As examples at All Security Equipment, the LiftMaster Motor, Electrical, 120VAC, LM2000 is about $174, the LiftMaster 1/2HP Motor, 120V about $299, the LiftMaster MOTOR, 1HP, 230/460V, 3PH, BM about $493 and the LiftMaster Motor for SL595101U Models about $952. Motor, gearbox and encoder service kits run from about $868 to about $1,577.

Budget separately for installation labor and any other parts the repair needs. Check each product page for current pricing and what the listing includes.

Why buy your LiftMaster replacement motor from All Security Equipment

All Security Equipment carries LiftMaster motors for commercial door operators and sliding gate operators in one place, along with the operators themselves in the LiftMaster collection. For help matching a motor, contact our customer service and technical support team with the operator model, the original motor's part number and the site voltage.

Frequently asked questions

How much does it cost to replace a LiftMaster motor?

LiftMaster replacement motors at All Security Equipment range from about $144 to about $3,391, depending on horsepower, voltage, phase and enclosure, and motor, gearbox and encoder service kits run from about $868 to about $1,577. Installation labor is extra, and each product page shows current pricing.

Can you replace just the motor on a LiftMaster operator?

Yes, when a replacement motor is listed for the operator model, such as the SL585501U or SL595101U. For LiftMaster J/JH and T operators, the motor is also sold in service kits that include the gearbox and encoder.

Which LiftMaster replacement motor fits my operator?

Match the model on the operator's label to the model in the product name, then confirm horsepower, voltage, phase and enclosure against the original motor. If the match isn't clear, contact All Security Equipment with the model and the motor's part number.