Gearless Traction Machines – Frequently Asked Questions
What are the key technical advantages of gearless traction machines over geared machines?
Gearless permanent magnet synchronous motors (PMSMs) offer several significant advantages: energy efficiency typically 30–50% better than geared systems; quieter operation due to elimination of the gearbox; compact form factor enabling machine-room-less (MRL) installation; higher ride quality and positioning accuracy due to direct drive without transmission losses; lower maintenance requirements as there is no gearbox oil to change; and longer service life with reduced mechanical wear. Turkish manufacturers typically achieve motor efficiency ratings of IE3 to IE4.
What encoder and brake specifications are standard on Turkish gearless machines?
Turkish gearless machines are typically supplied with high-resolution incremental or absolute encoders (1024 PPR to 4096 PPR range), compatible with all major elevator frequency inverter brands. Dual electromagnetic brakes meeting EN 81-20 safety requirements (each capable of independently stopping and holding the loaded car) are standard. Brake release monitoring contacts and manual brake release mechanisms for emergency evacuation are fitted as standard, compliant with EN 81-20 Section 12.
What load capacities and speeds are available from Turkish gearless machine manufacturers?
Turkish manufacturers cover the full commercial range: 320 kg to 2500 kg rated load, with speeds from 1.0 m/s to 3.5 m/s as standard catalog items. Custom specifications beyond these ranges can be engineered for high-rise, hospital, or heavy goods applications. Both 4-pole and 6-pole winding configurations are available, with motor voltage ratings matching standard 3-phase 380V–480V supply systems globally.
How do Turkish gearless machines compare for MRL (machine-room-less) applications?
Turkish gearless machines are specifically designed with slim, space-optimized profiles suitable for overhead MRL installation in the hoistway headspace or side-mounted in the top floor landing. Drive sheave diameters are engineered to match standard 8 mm and 10 mm steel rope configurations, and mounting bracket systems with adjustable bedplates are available to accommodate various guide rail spacings and hoistway dimensions common in European and GCC construction standards.