Lightweight Electric Door Motor Application

For light electric doors / automatic doors / sensor doors in office buildings and internal company entrances, we provide a power solution featuring **outer rotor brushless motor 4246 + customized gearbox**, suitable for door weights of 50–300 kg, meeting high‑frequency start‑stop requirements.

This outer rotor motor boasts strong compatibility with a wide voltage design of 10–55V, making it compatible with global power grid standards including 24V, 36V and 48V systems. It has a load speed of 3700–13000rpm (adjustable under no-load conditions) and a load torque of 1000gf·cm (approximately 0.098N·m). With reduction ratios ranging from 5:1 to 50:1, the torque can be boosted to 5–49N·m to suit doors of different weights.

Suitable for glass sliding doors, light folding doors, turnstile gates and other applications in office buildings. For example:

Glass sliding doors / sensor doors for office buildings: lightweight door structure + low-torque mode (reduction ratio 5:1–10:1), low power consumption and high-frequency operation.

Automatic electric retractable doors at main entrances: high reduction ratio (above 30:1) + high torque output for smooth opening and closing.

‌Automatic turnstile gates in public areas: multi-motor linkage control, compatible with 55V high-voltage systems to improve response speed.

The key benefits of this 4246 brushless motor with gearbox are:

Flexible customization: The reduction ratio can be adjusted as required, with single-stage or multi-stage gearboxes optional, precisely matching door weight and operating speed (e.g. 0.3-1.2 m/s).

‌High efficiency and energy saving: The brushless motor has an efficiency of over 85%, supports wide voltage compatible with low-voltage DC power supply such as solar systems, and reduces energy consumption by 30% compared with traditional motors.

‌Long service life and low maintenance: The outer rotor structure provides fast heat dissipation with a service life of 100,000 hours. The gearbox gears are made of powder metallurgy or steel, featuring wear resistance and lubrication-free operation.

‌Safe and quiet: Low locked-rotor current, can be linked with infrared or radar sensors for anti-pinch stop; running noise < 50dB, meeting office environment requirements.

For customers with lightweight electric door motor requirements, online consultation is available. Professional engineers will help you select the suitable micro motor.