Compact Extended-Reach Pneumatic Die Grinder
The ZDG-231AL 3-inch Extension Mini Air Die Grinder is engineered for professionals who need precision grinding, polishing, and finishing in confined or hard-to-reach areas. With its 3-inch extended shaft, this tool provides extra reach while maintaining excellent control and maneuverability, making it ideal for automotive repair, aerospace applications, mold finishing, and metal fabrication.
Key Features
3-Inch Extended Reach – Perfect for accessing tight or recessed spaces where standard die grinders cannot reach.
High-Speed Performance – Achieves up to 22,000 RPM for fast and precise material removal.
Dual Collet Compatibility – Equipped with 1/4 inch (6 mm) and 1/8 inch (3 mm) collets, supporting a wide range of accessories such as carbide burrs, stones, and polishing tools.
Lightweight & Ergonomic Design – Weighs only around 1.1 lbs (0.5 kg), ensuring comfort and reduced operator fatigue during extended use.
Rear Exhaust System – Keeps debris and air away from the work surface for a clean finish.
Industrial-Grade Durability – Built from premium materials to withstand heavy-duty, professional use.
Air Efficient Operation – Consumes just 3.0 – 3.5 CFM, helping reduce compressor load while delivering consistent power.
Benefits
3-inch extension allows access to recessed areas with improved control.
Compact and lightweight for excellent handling and reduced fatigue.
High-speed output (22,000 RPM) ensures efficient grinding, polishing, and finishing.
Supports multiple accessories with a dual collet system (1/4” & 1/8”).
Durable construction guarantees long service life even under daily industrial use.
Applications
Automotive Repair: Porting cylinder heads, removing gaskets, and polishing engine parts.
Aerospace & Mold Work: Precision finishing of molds, dies, and aerospace components.
Metal Fabrication: Deburring, weld grinding, and edge finishing in confined spaces.
General Industry: Maintenance, polishing, and detailed finishing in industrial workshops.
Why Choose the ZDG-231AL?
The ZDG-231AL 3-inch Extension Mini Air Die Grinder is the perfect balance of reach, control, and efficiency. Designed for professionals, it offers the extended access of a 3-inch shaft without compromising maneuverability, making it the go-to tool for precision grinding and finishing in challenging environments.
- Ergonomic cushion-grip handle-Insulates against cold temperature in the hand, helps ease user fatigue, and insulates against vibration.
- Power/Speed Regulator-Allows for easy rpm adjustment.
- Rear exhaust-Directs the exhaust away from the user and the working areas.
- Twin-Bearing Spindle – This high-quality design results in super-precise spindle concentricity, with less than 0.05mm deviation, and minimal vibration.
Specification:
- Collet Size: 1/4(6) inch(mm)
- Net Weight: 1.3(0.6) Lbs.(kg)
- Length: 8.6(220) inch(mm)
- Free Speed: 25000 rpm
- Air Inlet Size: 1/4 inch-NPT/PT
- Min. Hose Size: 3/8(10) inch(mm)
- Avg. Air Cons.: 2.6 cfm
| Model | Collet Size inch(mm) | Net Weight lbs(kgs) | Length inch(mm) | rpm | Air Inlet Size inch-NPT/PT | Minch Hose Size inch(mm) | Avg. Air Consumption cfm |
| ZDG-231 | 1/4(6) | 0.9(0.4) | 6.1(155) | 25000 | 1/4 | 3/8(10) | 3 |
| ZDG-2319 | 1/4(6) | 1.3(0.6) | 7.3(185) | 7600 | 1/4 | 3/8(10) | 3 |
| ZDG-231AL | 1/4(6) | 1.3(0.5) | 8.6(220) | 25000 | 1/4 | 3/8(10) | 2.6 |
| ZDG-231L | 1/4(6) | 1.5(0.7) | 10.1(259) | 25000 | 1/4 | 3/8(10) | 2.6 |
| ZP313 | 1/4(6) | 1.3(0.6) | 7(178) | 22000 | 1/4 | 3/8(10) | 3.7 |
| ZDG-356A | 1/4(6) | 1.5(0.7) | 7.8(200) | 2600 | 1/4 | 3/8(10) | 3.7 |
| ZDG-376A | 1/4(6) | 1.5(0.7) | 7.8(200) | 3600 | 1/4 | 3/8(10) | 3.7 |
| ZDG-376AL | 1/4(6) | 2.2(1) | 12(305) | 3600 | 1/4 | 3/8(10) | 3.5 |
| ZP314 | 1/4(6) | 1.5(0.7) | 9.4(240) | 22000 | 1/4 | 3/8(10) | 3.7 |
| ZP315 | 1/4(6) | 1.8(0.8) | 11(280) | 22000 | 1/4 | 3/8(10) | 3.7 |
