Overview
The Dunkermotoren GR 63X55 is a compact brushed DC servo motor designed for precision automation, industrial door systems, and motion control applications. Manufactured by Dunkermotoren, a German motor specialist, the GR 63X55 combines reliable performance with low cogging torque and low moments of inertia, making it ideal for applications requiring smooth, efficient operation over extended duty cycles. This surplus unit is in new, open box condition and ready for immediate deployment.
Key Features
- Brushed DC motor design with consistent, predictable performance characteristics
- Low cogging torque and low rotor inertia for smooth acceleration and precise positioning
- Available in multiple voltage configurations (24V, 30V, 40V, 55V) to match system requirements
- Rated for continuous duty operation with high starting torque capability
- Compatible with optional gearheads (SG80K, PLG52, PLG70) for increased output torque
- Compact 63mm x 55mm form factor suitable for space-constrained installations
Technical Specifications
The Dunkermotoren GR 63X55 is available in multiple configurations. Standard specifications for the 40V variant include:
- Voltage: 24V, 30V, 40V, or 55V DC (verify your specific configuration)
- Continuous Rated Speed: 3350–3450 rpm (voltage-dependent)
- Continuous Rated Torque: 27 N·cm
- Continuous Rated Current: 2.2–3.0 A (voltage-dependent)
- Starting Torque: 210 N·cm
- Starting Current: 15–28.6 A (voltage-dependent)
- No-Load Speed: 3600 rpm
- Power Output: 100 W (nominal, at rated speed)
- Weight: 1.7 kg (motor only); 4.3 kg (with gearbox assembly)
- Rotor Inertia: 750 g·cm²
- Shaft Diameter: 1/2″
- Class F insulation; premium ball bearings
Typical Applications
- Automatic sliding door operators and access control systems
- Industrial conveyor and material handling drive motors
- Robotic joint actuation and precision positioning
- HVAC damper and valve actuation
- Mobile platform and equipment drive systems
- OEM equipment replacement and retrofit projects
Compatibility & Replacements
Compatible With
- Dunkermotoren gearheads: SG80K, SG80, PLG52, PLG70
- Dunkermotoren encoder modules: RE20, ME52 magnetic encoder
- Standard 24–55 VDC power supplies
- Industrial motor controllers and PWM drives
- Dorma ES200 automatic door systems (OEM equivalent)
Replaces / Drop-In Replacement For
- Dorma ES200 automatic door motor (equivalent)
- Direct replacements for OEM Dunkermotoren assemblies: GR 63X55 (all voltage variants)
- Verify compatibility with your system integrator before ordering.
Works With
- PWM speed controllers and industrial motion controllers
- Brushed DC motor power supplies (24–55 VDC)
- Gearbox and encoder modules (mechanical integration)
- Standard industrial automation platforms requiring DC servo actuation
