Cutting tool・tooling

NAKASEIKI

🔹AIR CHUCK NPC-4TT-31 – Wedge Chuck 4-Inch
3 Fingers – 1 mm Stroke – Compact & High-Precision for Delicate Components
The NPC-4TT-31 is a specialized wedge-type pneumatic chuck designed for ultra-precise clamping of thin and small-diameter parts. With a short stroke and slim body, it’s ideal for fine turning operations in tight spaces, especially on small bores and delicate materials.

⚙️ Optimized for Small Bore Turning & Thin Materials
- 🎯 Precision turning of thin-walled, small-diameter components
- 🧩 Slim body design
→ Easy access in narrow machining zones
- 🔄 Bottom-center air port
→ Clean and efficient pneumatic routing

📊 Technical Specifications
| Specification | Value |
| Number of Fingers | 3 |
| Stroke per Finger | 1 mm |
| Repeatability | ±0.002 mm |
| Operating Pressure | 0.15 – 0.6 MPa |
| Gripping Force (@0.1 MPa) | 1192 N |
| Max Rotation Speed | 3000 RPM |
| Weight | 1550 g |
| Air Connection | FT-20 / FTB-20 |
✅ Key Advantages
- Extremely compact and lightweight
→ Easy to mount on small chucks and precision setups
- High clamping accuracy
→ Short stroke enables precise force control
- Ideal for fine turning of small, delicate parts
→ Perfect for high-precision machining environments

🚀 NPC-4TT-31 – Small Stroke, Strong Grip, Absolute Precision
The perfect choice for intricate, high-accuracy components