ZDG-231 Mini Air Die Grinder

The ZDG-231 Mini Air Die Grinder is a compact, lightweight, and high-speed pneumatic tool designed for precision grinding, polishing, deburring, and surface preparation. Built for professionals in automotive repair, metalworking, mold finishing, and general maintenance, this mini die grinder combines industrial durability with operator comfort. With its straight in-line design and ultra-compact body, the ZDG-231 is perfect for working in confined or hard-to-reach spaces where larger tools cannot fit. Despite its small size, it delivers powerful RPM performance, making it a versatile addition to any professional’s tool kit.

Key Features & Specifications

• Motor Power: 0.3 HP – compact but strong enough for light and medium-duty applications.

• Free Speed: 22,000 RPM – ensures fast, smooth, and precise grinding and polishing.

• Collet Size: 1/4 inch (6 mm) and 1/8 inch (3 mm) – supports a wide variety of accessories.

• Air Inlet: 1/4 inch NPT – standard pneumatic connection for easy setup.

• Average Air Consumption: 3.0 – 3.5 CFM – efficient use of compressed air.

• Exhaust System: The rear exhaust keeps air away from the work surface and the operator.

• Weight: Approx. 0.9 lbs (0.4 kg) – highly lightweight for all-day use.

• Length: 5.1 inches (130 mm) – compact size for maneuverability in tight spots.

• Design: Straight inline design for direct, controlled grinding and polishing.

Benefits of the ZDG-231

Compact & Lightweight – Ideal for one-handed operation and tight work areas.
High-Speed Performance – 22,000 RPM ensures efficiency in precision grinding tasks.
Versatile Accessory Use – Works with a wide range of mounted stones, burrs, and polishing accessories.
Ergonomic Grip – Reduces hand fatigue and enhances operator comfort.
Durable Industrial Build – Long service life under continuous professional use.

Ideal Applications

• Automotive Repair: Cylinder head porting, deburring, and gasket surface cleaning.

• Metal Fabrication: Rust removal, weld seam finishing, and surface prep.

• Mold & Die Work: Fine detail grinding and polishing.

• General Industrial Maintenance: Small part finishing and light-duty grinding.

• Woodworking & DIY: Intricate shaping, carving, and smoothing in tight areas.

Why Choose the ZDG-231?

The ZDG-231 Mini Air Die Grinder is designed for professionals who need precision, speed, and comfort in one tool. Its straight inline design offers excellent control, while the lightweight and ergonomic build reduces fatigue during extended use. Whether you’re working in automotive shops, manufacturing facilities, or precision mold finishing, the ZDG-231 delivers high-performance grinding and polishing in a compact package.

• 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.
• The ZDG-231 Mini Die Grinder is suitable for light weld grinding, porting, and polishing applications, and features a spindle concentricity of less than 0.05mm.

• Spindle Concentricity less than 0.05mm
• Ergonomic Cushion-Grip Handle
• Power/Speed Regulator
• Twin-Bearing Spindle
• Swivel Exhaust

ZDG-231K Mini Die Grinder Tool Kit

Specification:

• 1 pc Die Grinder
• 2 pcs Spanners
• 5 pcs 1/4″ Shank Grinding Stones
• 5 pcs 1/8″ Shank Grinding Stones
• 1 pc 1/8″ Collet
• 1 pc Nipple
• 1 pc Blow Case