Selecting the right electric telescopic door requires understanding key technical parameters. This guide covers the most important specifications buyers should evaluate before making a purchase decision.
1. Opening Width
The first measurement is the clear opening width to be covered. This determines the number of door panels needed. Standard panels are approximately 0.7-0.8 meters wide per section. For a 6-meter opening, approximately 8-10 panels are typically required. Oversizing the door coverage by 1-2 meters provides flexibility for larger vehicles.
2. Motor Power
Motor power must match door weight and size. A 370W motor is sufficient for residential doors with up to 8 panels and opening widths under 10 meters. Industrial doors with 10+ panels or wind-resistant configurations require 550W or 750W motors. Underpowered motors struggle during cold weather when lubricants thicken and electrical resistance increases.
3. Panel Material and Thickness
Aluminum alloy panels are lighter and resist corrosion better but offer less impact resistance. Steel panels are stronger but heavier and require proper surface treatment to prevent rust. Panel thickness typically ranges from 0.5mm to 1.2mm for aluminum and 0.4mm to 0.8mm for steel. Thicker panels provide better rigidity but increase overall door weight and motor load.
4. Track and Ground Conditions
The track system must match ground conditions. In areas with clay soil prone to expansion, reinforced concrete foundations are necessary. For paved surfaces, surface-mounted track systems avoid excavation. In regions with hard freezes, underground tracks require proper drainage to prevent water accumulation and ice damage.
5. Control and Safety Features
Essential safety features include infrared obstacle detection, emergency stop function, and manual override in case of power failure. Optional upgrades include GSM modules for remote control, integration with building access systems, and real-time monitoring via smartphone apps. Evaluate which features are code-required in your locality versus nice-to-have additions.
This article compiles information from publicly available automatic door industry resources.