# How Long Do Automatic Door Motors Last? | GW GeWalt

> A quality BLDC automatic door motor runs for many years and millions of cycles. See how duty cycle and maintenance affect lifespan.

URL: https://gwgewalt.com/guide/automatic-sliding-door-motor-lifespan/
Last-Modified: 2026-07-10

# How Long Do Automatic Sliding Door Motors Last?

A quality BLDC automatic door motor runs for many years and millions of cycles. See how duty cycle and maintenance affect lifespan.

Published 10 July 2026 · 4 min read

![Technician inspecting an automatic door BLDC motor in a header cabinet](/images/featured/technician-inspecting-an-automatic-door-bldc-motor.webp)

## The Honest Numbers on Motor Life

Motor lifespan is where automatic door quality shows itself most clearly. A brushless DC (BLDC) motor on a properly maintained door routinely delivers 10 to 15 years of daily commercial service — millions of open-close cycles. The brushed DC motors in budget systems tell a different story: carbon brushes wear, heat builds, and 3 to 5 years is a common life in Malaysian high-traffic use.

That gap is why 

automatic sliding doors

[/automatic-sliding-doors/ →](/automatic-sliding-doors/)

 from GW GeWalt run a 100W BLDC motor as standard. No brushes means no brush wear, cooler running and consistent torque across the motor’s whole life. Our guide on 

how automatic sliding doors work

[/guide/how-do-automatic-sliding-doors-work/ →](/guide/how-do-automatic-sliding-doors-work/)

 shows where the motor sits in the drive chain.

![Close-up of a brushless DC door motor unit](/images/content/close-up-of-a-brushless-dc-door-motor-unit-with-wo.webp)

## Duty Cycle: The Spec Most Buyers Never Check

Duty cycle describes how much of the time a motor can run without overheating. A 15% duty-cycle motor is built for occasional residential use; run it at a busy shopfront and it cooks itself within a couple of years. Continuous-duty (100%) motors are engineered to cycle all day, every day, without a thermal ceiling.

> **Ask this before you sign any quotation**
> 
> “What is the motor’s duty cycle, and what is its per-leaf weight rating?” Any supplier of serious equipment answers instantly. Hesitation usually means a residential-grade motor is being quoted for commercial work.

Weight rating matters for the same reason. A motor rated to 200kg per leaf, driving 120kg leaves, spends its life loafing. A 100kg-rated motor driving the same leaves spends its life at redline. Headroom is longevity.

## What Actually Shortens Motor Life

In our repair work across the Klang Valley, motors rarely die of old age. They die of overload, and the overload almost always starts elsewhere:

-   **Worn rollers** drop the leaf onto the track, and the motor drags it instead of gliding it
-   **Misaligned or dirty tracks** add friction on every cycle
-   **Loose belts** slip and shock-load the drive
-   **Skipped servicing** lets all three of the above compound quietly

This is why motor life and maintenance are the same conversation. A door serviced on the right 

service schedule

[/guide/how-often-should-automatic-doors-be-serviced/ →](/guide/how-often-should-automatic-doors-be-serviced/)

 keeps its rollers, track and belt within spec, and the motor never sees the loads that kill it.

The warning signs of a motor nearing the end are audible and visible: laboured or slowing opening, a hot header cabinet, humming without movement, or intermittent stalls on hot afternoons. Any of these deserves a diagnosis visit before the failure strands your entrance shut.

If your door’s motor is fading — or you want the duty-cycle question answered for a new installation — send us the details on WhatsApp. Diagnosis is on-site, quotations are free, and a motor replacement is far cheaper than a jammed doorway on a busy morning.

## Frequently Asked Questions

How many years does an automatic door motor last?

A well-maintained BLDC motor typically serves many years of daily commercial use — often 10 to 15 years and millions of cycles. Brushed motors on budget systems commonly fail in 3 to 5 years.

What kills a door motor early?

Overload from dragging leaves, skipped servicing and misaligned tracks. When worn rollers force the motor to pull a dragging door, its working load can double and heat shortens its life fast.

Can a worn motor be replaced without a new door?

Yes. If the leaves, track and frame are sound, a motor swap restores the system without replacing the whole entrance.

## Learn more about Automatic Sliding Doors

See how we spec, supply and install automatic sliding doors — or send us your questions for a free quotation.

Automatic Sliding Doors

[/automatic-sliding-doors/ →](/automatic-sliding-doors/)

 

Get a Free Quotation

[https://wa.me/60192404794?text=Hi%2C%20I%27d%20like%20a%20free%20quotation%20for%20a%20door%20or%20glass%20system. →](https://wa.me/60192404794?text=Hi%2C%20I%27d%20like%20a%20free%20quotation%20for%20a%20door%20or%20glass%20system.)