The Techno AT3170K Micro Air Die Grinder Kit is a compact, high-speed pneumatic precision grinding tool designed for detailed grinding, polishing, deburring, engraving and finishing operations. The tool uses a 3mm (1/8-inch) collet and delivers an exceptionally high 54,000 RPM free speed, making it particularly suitable for precision work where a small abrasive or rotary accessory needs to operate at high speed. Techno's current price list identifies the AT3170K as a round-housing grinder kit with 54,000 RPM.
The AT3170K is powered by compressed air and uses a 1/4-inch PT air inlet with a 3/8-inch ID air hose. Published specifications specify a 90 PSI (6.3 bar) working pressure. The Techno specification also lists 5.7 SCFM average air consumption for the kit.
Its compact round-housing design makes it comfortable to hold like a pen during precision operations. The 3mm collet capacity allows the use of compatible small-diameter grinding, polishing and rotary accessories, making the tool useful for intricate work on metal and other suitable materials.
Product Features
- 54,000 RPM High-Speed Performance: Extremely high free speed makes the tool suitable for detailed and precision grinding applications.
- 3mm / 1/8-Inch Collet: Designed to accept compatible 3mm rotary accessories.
- Micro Die Grinder Design: Compact construction allows improved control for intricate finishing work.
- Round Housing: Pen-style round body provides a comfortable grip for precision operations.
- Pneumatic Operation: Uses compressed air instead of an electric motor, making it suitable for workshops equipped with an air compressor.
- 1/4-Inch PT Air Inlet: Standard pneumatic connection for suitable compressed-air systems.
- 3/8-Inch Air Hose Compatibility: Designed for use with a 3/8-inch internal-diameter air hose.
- 90 PSI / 6.3 Bar Working Pressure: Designed to operate at the specified pneumatic pressure.
- 5.7 SCFM Air Consumption: The published Techno specification lists approximately 5.7 SCFM average air consumption.
- Precision Grinding: Suitable for controlled material removal in small or detailed areas.
- Polishing & Finishing: Can be used with suitable accessories for polishing and surface finishing.
- Deburring: Useful for removing burrs and sharp edges from suitable metal components.
- Engraving & Detailing: Suitable for fine rotary work when used with appropriate accessories.
- Lightweight Handheld Format: Designed for easy one-handed operation during precision tasks.
- Professional Pneumatic Tool: Suitable for workshops, fabrication units, engineering applications and maintenance work.
Product Specifications
- Brand: Techno
- Product Type: Micro Air Die Grinder Kit
- Model Number: AT3170K
- Tool Type: Pneumatic Micro Die Grinder
- Housing: Round Housing
- Collet Capacity: 3mm / 1/8 Inch
- Free Speed: 54,000 RPM
- Air Inlet: 1/4 Inch PT
- Recommended Air Hose: 3/8 Inch ID
- Average Air Consumption: 5.7 SCFM
- Working Pressure: 90 PSI / 6.3 Bar
- Power Source: Compressed Air
- Drive Type: Pneumatic
- Application: Grinding, polishing, deburring, engraving and precision finishing
- Accessory Compatibility: Suitable 3mm / 1/8-inch rotary grinding and finishing accessories










