Types of Elevator Motors: AC, DC, Gearless & How to Choose the Right One

author: Cloe

2026-06-30

Types of elevator motor define the core structure of every elevator system, including the elevator motor, elevator traction motor, and elevator drive motor used to generate and control lifting power. In modern systems, these components are typically integrated into an elevator traction machine, which can be configured as either a gearless elevator motor system or a geared elevator motor system depending on building requirements.

Understanding the types of elevator motor is essential for selecting, replacing, or maintaining the correct drive system in different elevator applications. This guide explains the main motor types, their structure, and how they are used in modern elevator traction systems.

1. What Is an Elevator Motor?

An elevator motor is the core power unit that drives the elevator movement through a traction system. It converts electrical energy into mechanical motion to lift and lower the elevator car.

In modern systems, the motor is usually integrated into a traction machine (elevator traction motor system), which includes the motor, brake, and sheave.

2. Main Types of Elevator Motors

2.1 AC Elevator Motor (Alternating Current Motor)

The AC elevator motor is one of the most widely used motor types in modern elevator systems.

Key features:

Simple structure
Low maintenance cost
High reliability
Suitable for residential and commercial buildings

Applications:

Low-rise and mid-rise elevators
Standard passenger elevators

Most modern AC motors are paired with VVVF drives for smooth speed control.

2.2 DC Elevator Motor (Direct Current Motor)

The DC elevator motor was widely used in older elevator systems.

Key features:

High starting torque
Precise speed control
Complex maintenance requirements

Limitations:

Higher maintenance cost
Brush wear issues
Gradually replaced by AC systems

Today, DC motors are mostly found in legacy elevator systems.

2.3 Gearless Elevator Motor (PMSM Motor)

The gearless elevator motor, also known as a PMSM (Permanent Magnet Synchronous Motor), is the standard solution in modern high-efficiency elevators.

Key features:

High energy efficiency
Low noise and vibration
Compact structure
No gearbox required

Applications:

High-rise buildings
MRL (Machine Room-Less) elevators
Premium residential and commercial projects

The gearless design reduces mechanical loss and improves ride comfort significantly.

2.4 Geared Elevator Motor

The geared elevator motor includes a gearbox between the motor and the sheave.

Key features:

Lower cost compared to gearless systems
Reliable performance
Requires regular lubrication and maintenance

Applications:

Mid-rise buildings
Industrial and freight elevators

Although less efficient than gearless systems, geared motors remain widely used due to cost advantages.

3. Elevator Motor Working Principle

All elevator motors operate on the same basic principle:

Electrical power is supplied to the motor
The motor generates rotational force
The traction system converts rotation into vertical movement
Counterweight balances the load for energy efficiency

In gearless systems, the motor directly drives the sheave, improving efficiency.

4. Elevator Motor vs Elevator Traction Motor

A common confusion in the industry:

Elevator motor = the power unit
Elevator traction motor / traction machine = complete drive system

The traction machine includes:

Motor
Brake system
Sheave
(Gearbox in geared systems)

Understanding this difference is important for correct part selection and replacement.

Elevator Motor vs Elevator Traction Motor

5. How to Choose the Right Elevator Motor

Motor selection depends on building height, usage intensity, and lifecycle cost. In engineering practice, decisions are usually made based on the following rules:

For low-rise buildings (2–6 floors), priority is cost and simplicity. AC motors or geared traction motors are typically sufficient. They provide stable performance at a lower installation and maintenance cost.

For mid-rise buildings, the focus shifts to efficiency and ride quality. Geared motors with VVVF control are commonly used, while upgraded AC systems are also a practical option when smoother operation is required.

For high-rise or high-traffic buildings, gearless PMSM motors are the standard choice. They offer higher efficiency, better torque control, and stable performance under frequent starts and stops. They are also required in most MRL (machine-room-less) elevator systems.

For energy-saving or green building projects, gearless synchronous motors are preferred. The higher initial cost is offset by lower energy consumption and reduced mechanical loss over time.

For freight or heavy-duty elevators, geared motors are still widely used. They deliver higher torque and are easier to maintain in industrial environments, where noise and energy efficiency are less critical than durability.

In summary, the decision is mainly driven by three factors: building height, usage frequency, and lifecycle cost.