Overview
The Dunkermotoren GR 63X55 is a compact brushed DC motor manufactured by Dunkermotoren, a division of AMETEK Germany with over 50 years of precision motor development. This motor is designed for applications requiring reliable, low-cogging torque operation, including industrial automation equipment and commercial sliding door systems. The GR 63X55 is available in multiple voltage configurations, with a standard base power rating of approximately 100 watts.
Key Features
- Brushed DC motor with low cogging torque and smooth operation
- Bidirectional rotation capability for flexible control
- Rugged construction with sealed ball bearings
- Modular design compatible with optional SG80K worm gearbox and magnetic encoders
- Compact form factor optimized for space-constrained installations
- Available in multiple voltage ratings and custom configurations
Technical Specifications
The Dunkermotoren GR 63X55 specifications vary by configuration. Reference specifications listed below are for common base motor configurations:
- Motor Type: Brushed DC
- Nominal Power (typical): 100 W
- Speed Range: 3000–3600 RPM (no-load, voltage dependent)
- Continuous Rated Torque (typical 12V config): 24 N·cm
- Continuous Rated Torque (typical 40V config): 27 N·cm
- Rotor Inertia: 750 g·cm²
- Ball Bearings: Standard on motor output shaft
- Protection Class: Up to IP 65 (higher ratings available)
- Motor Weight: Approximately 1.7 kg (motor only)
- Custom Options: Shaft length/diameter variations, dual-sided shafts, high-voltage windings, encoder integration
Typical Applications
- Automatic sliding door operators (e.g., Dorma ES200 systems)
- Industrial automation and motion control
- Precision positioning systems requiring bidirectional operation
- Commercial and retail entrance systems
- Equipment requiring low-noise, low-vibration drive
Compatibility & Replacements
Compatible With
- Dorma ES200 automatic sliding door systems (with matching gearbox/encoder)
- Automatic door controllers with matching electrical specifications
- Worm gearboxes: SG80K (standard, 10:1 and 15:1 ratios available)
- Magnetic encoders: RE20S, ME52 series
- Custom control systems supporting brushed DC motor operation
Replaces / Drop-In Replacement For
- Note: This unit directly replaces GR 63×55 motor assemblies with matching voltage and gearbox configuration. Verify your original motor nameplate (voltage, gear ratio, encoder type) before ordering.
- Dorma ES200 original equipment motors (with compatible gearbox and encoder)
- OEM Dunkermotoren GR 63×55 units in active door operator systems
Works With
- Brushed DC motor controllers and variable frequency drives
- Automatic door operator control panels
- Encoder feedback systems for position sensing
- Standard 24 VDC, 30 VDC, 40 VDC, and higher voltage power supplies (voltage-dependent)
- Magnetic encoder readers and feedback circuits
