Cutting tool・tooling

NAKASEIKI

🛡️ NPC-4TTS-33M – Wedge Chuck 4-Inch
3 Fingers – Compact – Ultra-Precise – Dust-Resistant Design
The NPC-4TTS-33M is a specialized wedge-type pneumatic chuck built for high-precision clamping in harsh environments. Featuring an oil-mist sealing system, it effectively resists dust, evacuates chips, and minimizes wear—making it ideal for CNC machining lines and high-speed rotary systems.

⚙️ Optimized for Harsh Conditions
The “M” version is engineered with oil-mist compatibility to protect internal components from dust and debris. It’s the perfect solution for cutting environments, dusty workshops, and automated production lines requiring clean, reliable clamping.

🔧 Key Features
- 🔩 3 Fingers – Fast and Precise Clamping
→ Ideal for symmetrical and round components
- 💨 φ6.0 mm Through-Hole
→ Supports coolant flow, chip evacuation, or sensor integration
- 🎯 Repeatability ±0.002 mm
→ Delivers exceptional accuracy for fine machining
- 🔄 Bottom-Center Air Port
→ Clean pneumatic layout for easy integration
📊 Technical Specifications
| Specification | Value |
| Number of Fingers | 3 |
| Stroke per Finger | 3 mm |
| Repeatability | ±0.002 mm |
| Operating Pressure | 0.15 – 0.6 MPa |
| Gripping Force (@0.1 MPa) | 1161 N |
| Max Rotation Speed | 3000 RPM |
| Weight | 2580 g |
| Air Connection | FT-30 / FTB-30 / FT-30K |
| Through-Hole Diameter | φ6.0 mm |
| Dust Protection | Oil-mist compatible |
| Body Material | Steel (Fe) |

✅ Key Advantages
- Dust-resistant design with oil-mist sealing
- Compact and durable for high-speed rotary systems
- Ideal for CNC automation in cutting and dusty environments
- Reliable performance with minimal maintenance

🚀 NPC-4TTS-33M – Clean. Precise. Reliable.
When you need cleanliness, accuracy, and durability—all in one chuck.