3500kg Elevator Lift Gearless Traction Machine Elevator Spare Part For Sale

1. Introduction

The Gearless Traction Machine (GTM) is a high-performance drive system used in modern elevators, replacing traditional geared traction systems. By eliminating the need for a gearbox, it offers superior energy efficiency, reduced maintenance, and smoother operation, making it the preferred choice for high-rise buildings, smart elevators, and sustainable architecture.

2. Working Principle

The gearless traction machine operates using a permanent magnet synchronous motor (PMSM) or an asynchronous motor in some designs. The key components include:

• Stator: Electromagnetic coils generate a rotating magnetic field when powered.

• Rotor: Permanent magnets (in PMSM) or induced currents (in asynchronous motors) interact with the stator’s field to produce torque.

• Traction Sheave: Directly drives the elevator ropes without intermediate gears.

Since there is no gear reduction, the motor runs at the same speed as the elevator’s movement, improving efficiency and responsiveness.

3. Key Advantages

(1) High Energy Efficiency (90-95%)

• Eliminates gear friction losses, reducing energy consumption by 30-50% compared to geared systems.

• Supports regenerative braking, converting kinetic energy into electricity and feeding it back into the building’s power grid.

(2) Compact & Space-Saving Design

• No bulky gearbox allows for machine-room-less (MRL) elevators, freeing up valuable building space.

• Ideal for retrofitting older buildings where space is limited.

(3) Smooth & Quiet Operation

• Reduced mechanical vibration and noise enhance passenger comfort.

• Precise speed control ensures a jerk-free ride experience.

(4) Low Maintenance & High Reliability

• Fewer moving parts (no gears, oil, or belts) minimize wear and extend lifespan.

• Reduced downtime and maintenance costs compared to geared systems.

SN-MDD640

DIMENSIONS

SN-MDD480

DIMENSIONS

FAQ
1. Are the elevator wire ropes durable?
The elevator wire rope has special provisions and requirements. Configuration is not only for wire rope and rated load, but also considered the size of the traction, as a result, the tensile strength of wire rope is greater than the weight of the lift. The safety factor is equipped with more than four wire rope. So it won’t break at the same time.
2. Is it dangerous for power failure suddenly during the elevator running?
If it occurs, the elevator will automatically stop due to the electrical and mechanical safety device. In case of power failure,elevator brakes will automatically taken. In addition, the power supply departments such as planned outage, prior notice are also operating.
3. Will us be hurt when it closed suddenly?
In the closing process, if people touch the hall door, the door of elevator will automatically restart without any danger. With anti clamping switch, once the gate touched, this switching action make the elevator unable to be closed and even reopened. In addition, closing force is also available here.
4. How the elevator running?
Elevators are operated with a counterweight wire rope through the (tractor) traction drive, making ups and downs on the guide rail.
5. Is the escalator installation complicated?
We believe the functions of an escalator are not necessarily proportional to the operation complexity. Therefore, escalators designed by us apply an integrated structure, so that the equipment is more precise and more efficient and allows easier and more convenient commissioning.
6. Do you have any cerifications?
Yes, we do with ISO9001 / CCC / CE Certificates for u.