Dunkermotoren Brushed DC motor GR 63x55 30V for ES200 Automatic Doors
Dunkermotoren - Ametek Germany develops and produces precision motors for over 50 years. Their motors are well-known for its powerful and durable. By years' experience, we trust their quality and only use original Dunkermotoren motors as the driving units on our automatic door operators.
The motors on ES200 automatic sliding door opener/operator are Dunkermotoren's brushed DC motors convince with low cogging torque, rugged design and low moments of inertia. It is the same as Dorma ES200 automatic door motor.




Module combination: Motor GR 63x55 30V, Worm Gearbox SG80, Encoder RE20
- Operation in both directions of rotation
- Ball bearing at motor output shaft is standard
- A Optionally with deviant shaft length and diameter, shaft on both sides, special and high voltage winding, higher protection class up to IP 65
- Nominal voltage V 30
- Nominal power W 100
- Nominal speed rpm 3350
- N.W. 1.7 kgs (Motor only, plus gearbox & encoder and driving wheel total N.W. 2.5 kgs)
Dunkermotoren is located in Bonndorf im Schwarzwald (Baden-Württemberg), where Dunkermotoren is the city-wide largest employer. The motors supplying China market are manufactured by Dunkermotoren Taicang, China. All Dunkermotoren motors purchased from China should be labeled as “Made in China”, instead of “Bonndorf Germany”
LOCATIONS: Taicang, China
Proof Letter from Dunkermotoren – Ametek
Frequently Asked Questions
Q: Is this the correct replacement for my Dorma ES200 motor?
A: If your current motor label shows GR 63×55 30V or your system documentation specifies these parameters, this motor is a direct replacement. The assembly includes the exact SG80K gearbox and RE20S encoder used in original ES200 installations.
Q: What's the difference between Doordynamic's motor and cheaper sliding door motors?
A: The Dunkermotoren GR 63×55 from Doordynamic offers superior longevity (3-5x longer service life), smoother operation (ultra-low cogging torque), and better energy efficiency. While generic motors may cost less initially, they typically require replacement every 1-2 years in commercial applications, making Dunker's motor more economical long-term.
Q: Why does it say "Made in China" on a German motor?
A: Dunkermotoren operates manufacturing facilities in both Germany and China. China facility under identical quality standards and ISO certifications as their German production.
Q: What if my system uses 24V instead of 30V?
A: Voltage must match your controller output. Using a 30V motor on a 24V system will result in reduced torque and speed. Contact us for the correct 24V variant if needed.
Shipping & Warranty Information
Shipping: Doordynamic ships worldwide via DHL Express. Typical delivery time is 7 business days to most destinations. All motors are carefully packaged to prevent shipping damage.
Warranty: Doordynamic provides a 1-year warranty against manufacturing defects under normal commercial use. Warranty covers the motor, gearbox, and encoder assembly. Does not cover damage from improper installation, voltage mismatch, or excessive environmental exposure.