Proxxon Industrial MICRO-Combispeeder 23139, variable speed micro motor for precision work

Proxxon Industrial MICRO-Combispeeder 23139 is a compact variable-speed micro motor designed for precision tasks such as model making, fine machining, polishing and engraving. The handheld or bench-mountable unit provides a controllable rotational speed range suited to small-diameter tool bits and delicate materials, enabling careful removal of material, fine surface finishing and detailed shaping. Its compact form factor and straightforward controls make it suitable for continuous small-scale work where steadiness and speed control are important.

Advantages

The MICRO-Combispeeder offers adjustable speed control allowing precise matching of rotational speed to task and material, reducing the risk of damage to delicate parts. Compact size and low weight support comfortable handheld operation and easy storage. The design supports a variety of small rotary tools for cutting, grinding, polishing and engraving, providing versatility for model making and light-detail industrial tasks. Stable performance and simple controls help maintain consistent results during extended use.

Suitable for

• Model making and scale modelling details
• Fine mechanical machining and deburring of small parts
• Precision polishing, buffing and surface finishing
• Engraving, carving and detailed shaping of soft materials
• Jewellery making, restoration and repair of small items

Key specifications

• Variable speed control for precise rotational adjustment
• Compact, lightweight micro motor housing for handheld or bench use
• Compatibility with small-diameter tool bits for detailed work
• Suitable for fine machining, polishing and engraving tasks

How to use

Mount the appropriate small rotary bit for the intended operation and ensure it is secured according to the tool-holder instructions. Position the unit for handheld use or fix it on a stable bench mount if available. Start at a low rotational speed and increase gradually while observing the workpiece response; use slower speeds for delicate materials and finer detail, and higher speeds for light cutting or polishing as material and bit specifications permit. Apply light, steady pressure—avoid forcing the tool—to maintain control and prevent damage to the bit or the workpiece. Follow standard workshop safety procedures, such as eye protection and dust extraction where necessary.

Usage recommendations

Use suitable small-diameter bits rated for the chosen speed range and inspect bits for wear before each use. For best results on delicate surfaces, test settings on a scrap piece first and adjust speed and pressure incrementally. Allow the motor to run up to speed before engaging the workpiece and avoid prolonged heavy loads to extend tool life.