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
(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
| Voltage | 380V | Roping | 1:1/2:1 |
| Load | 3500~5200kg | Speed | 0.5~1.5m/s |
| Sheave Diam | 640mm | Duty | S5-40% |
| IP Code | IP41 | Max. Static Load | 20000kg |
| Ins. Class | F | Weight | 260kg |
| Brake | AC220V 6x2.2A |
DIMENSIONS
SN-MDD480
| Voltage | 380V | Roping | 2:1 |
| Load | 1600~2000kg | Speed | 2.5~5.0m/s |
| Sheave Diam | 480mm | Duty | S5-40% |
| IP Code | IP41 | Max. Static Load | 20000kg |
| Ins. Class | F | Weight | 950kg |
| Brake | AC220V 2x2.2A |
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.
