The modern elevator is no longer merely a box that travels between floors. It is a precision-engineered system where every component — from the traction motor to the door operator — is designed around one guiding principle: the quality of the journey itself.
The Problem with Geared Systems
Traditional geared traction elevators rely on an intermediate worm gear between the motor and the traction sheave. While effective, this arrangement introduces:
- Mechanical friction that converts energy into heat rather than motion.
- Vibration transmission from the gear mesh through the cabin structure.
- Noise — both the operational hum and the characteristic whine of gear engagement.
- Maintenance cycles requiring regular gear oil replacement and wear inspection.
For luxury residential buildings, hospitality environments, and premium commercial spaces, these characteristics are simply incompatible with the experience expected.
The Gearless Advantage
A Permanent Magnet Synchronous Motor (PMSM) eliminates the gearbox entirely. The motor rotor is mounted directly on the sheave shaft, driven by a rotating magnetic field produced by the stator windings interacting with high-energy rare-earth permanent magnets on the rotor.
The results are measurable:
| Parameter | Geared System | Gearless PMSM | | :--- | :--- | :--- | | Energy Consumption | Baseline | 30–40% lower | | Noise Level | 60–72 dB | 45–55 dB | | Maintenance Intervals | 3 months | 12 months | | Speed Capability | Up to 1.5 m/s | Up to 4.0 m/s |
Frequency-Controlled Acceleration
A gearless drive on its own is not sufficient. The motor must be paired with a Variable Voltage Variable Frequency (VVVF) inverter drive that precisely shapes the acceleration and deceleration curves.
Rather than simply switching between full-speed travel and abrupt braking, the VVVF controller:
- Accelerates gently — ramping speed over a calculated S-curve profile.
- Maintains constant mid-travel speed with tight regulation.
- Decelerates smoothly — mirroring the acceleration curve in reverse.
- Levels precisely — creeping the final approach to within ±2mm of floor level.
This is what produces the sensation of a seamless, floating ride.
Machine Room-Less (MRL) Integration
Modern gearless motors are compact enough to be mounted inside the hoistway itself — either at the top or integrated into the wall structure. This eliminates the dedicated machine room that was once standard in every elevator installation, freeing up valuable real estate on the topmost floor of the building.
Teknix Vertix and Greentek platforms both operate on this MRL principle, with motor envelopes optimised for tight architectural integration without compromising performance.
What This Means for Your Building
When specifying an elevator for a premium development:
- Residential towers benefit from quiet, vibration-free operation that is imperceptible from adjacent apartments.
- Hospitality environments gain arrival experiences that reinforce the premium brand perception of the property.
- Commercial high-rises achieve the traffic handling capacity of faster speeds (1.5–4.0 m/s) that only gearless systems can deliver.
The choice of elevator technology is, ultimately, a decision about the quality of every journey your building will deliver over the next 20 years.
To discuss the right elevator technology for your project, contact the Teknix engineering team.