A compact metal gearmotor designed for space-constrained and weight-sensitive robotics and educational prototypes combines a high-speed DC motor with a small metal gearbox. The assembly is intended to deliver reliable rotational output while increasing torque for miniature mobile platforms and experimental motion mechanisms.
Product overview
The unit is built around a brushed DC motor and a metal reduction gearbox, packaged in a small form factor suited to precision robot builds and teaching platforms. Its output stage is configured to trade motor speed for added torque, allowing small wheels and linkages to move under load without a large drivetrain footprint.
Key features
The motor’s mechanical details are tailored to miniature applications where secure coupling and stable mounting are critical.
- D-shaped output shaft: A metal D-shaft measuring 0.365 inch (9.27 mm) provides a flat surface that resists slipping between the shaft and wheel hub, helping maintain torque transfer during acceleration and steering.
- Compatible interface: The shaft diameter and geometry are intended to fit common micro-robot wheels, including 42 x 19 mm and 32 x 7 mm sizes.
- Mounting system: A brass faceplate carries two M1.6 threaded holes (1.6 mm diameter, 0.35 mm pitch), allowing direct attachment to custom chassis plates or brackets.
Technical specifications
The principal mechanical specifications are listed below.
| Parameter | Specification |
|---|---|
| Shaft type | D-shaped metal shaft |
| Shaft length | 0.365 inch (9.27 mm) |
| Mounting hole specification | M1.6 (0.35 mm pitch) |
| Faceplate material | Brass |
Typical applications
The gearmotor is used in projects that require compact packaging and controlled torque output.
- Educational robotics: Small classroom robot experiment platforms.
- Micro mobile platforms: Line-following cars and miniature rovers where size is a primary constraint.
- Precision motion control: Experimental mechanical linkages that need stable output.
Design and integration notes
The D-shaft and threaded faceplate are intended to simplify integration with custom chassis and wheel assemblies. The flat on the output shaft provides a mechanical engagement point for set screws or matching hubs, while the brass faceplate offers durable threads for repeated assembly.
Because the mounting holes are small, builders should use matching M1.6 hardware and avoid over-tightening, which can damage the threads. The motor can be paired with standard or extended gearmotor brackets when additional structural support is needed.