Product Name: 1/8" Pneumatic Pencil Die Grinder
Product Overview
This high speed, lightweight pneumatic pencil die grinder is designed for precision work such as deburring, mold polishing, weld cleanup, brake caliper grinding, and engraving. With its compact structure and air powered drive, it's ideal for professionals in metalworking, automotive repair, and toolmaking.
Technical Specifications
Product Name: Pneumatic Pencil Die Grinder
Power Source: Pneumatic (External Air Compressor Required)
Max Speed: 56, 000 RPM (No Load)
Operating Pressure: 90 PSI (6.2 bar)
Air Consumption: 4.0 CFM (113 L/min)
Collet Size: 1/8 inch (3.175 mm)
Air Inlet: 1/4"" NPT Quick Connect
Tool Length: 5.4 inches (137 mm)
Total Length: 60 inches (with air hose)
Net Weight: Approx. 300 g
Construction: CNC Aluminum Body + Brass Fitting
Noise Level: 73–75 db
Installation Steps
1. Ensure the air compressor delivers ≥90 PSI and ≥4.0 CFM.
2. Add 2–3 drops of pneumatic tool oil into the air inlet before each use.
3. Connect the included or compatible air hose to the 1/4"" NPT fitting securely.
4. Insert a 1/8"" bit into the collet and tighten it with the provided wrenches.
5. Slowly open the air supply and test for smooth operation and acceptable vibration.
Proper Usage Instructions
Hold the tool gently like a pen. Avoid applying excessive pressure. Select proper grinding bits according to the work material (e. G. , grinding stones, wool wheels, carbide burrs).
Maintain even tool movement to avoid overheating and ensure consistent finish.
Safety Precautions
1. Always wear protective gear: safety glasses, gloves, and earplugs.
2. Do not operate the tool above 120 PSI.
3. Disconnect air supply and remove accessories after use.
"