Cutting tool・tooling

NAKASEIKI

🔩 NPC-4FSS-33 – Sensor-Ready Pneumatic Chuck for Inspection & Machining
Precision Meets Intelligence. Designed for Smart Inspection Systems.
The NPC-4FSS-33 is a wedge-type pneumatic chuck equipped with a φ6 mm through-hole, allowing sensor insertion for advanced inspection and monitoring. With a 3 mm jaw stroke and 2 μm repeatability, it’s ideal for use in inspection jigs, coolant systems, and chip removal setups. This model combines mechanical precision with smart integration capabilities.

⚙️ Key Features
- 🧩 Wedge Mechanism – 4 inch / 3 fingers
→ Ensures stable and synchronized gripping
- 📏 Jaw Stroke – φ3 mm
→ Suitable for precision clamping with added flexibility
- 🎯 Repeatability Accuracy – 0.002 mm (2 μm)
→ Guarantees consistent performance in inspection environments
- 🛠️ φ6 mm Through-Hole
→ Enables sensor insertion for seat detection, coolant flow, or chip evacuation
- 🌬️ Dual Side Air Port Configuration
→ Simplifies pneumatic setup and system integration

📐 Technical Specifications
| Item | Value |
| Model | NPC-4FSS-33 |
| Repeatability Accuracy | ±0.002 mm |
| Number of Fingers | 3 |
| Jaw Stroke | φ3 mm |
| Mounting Hole Pitch | P.C.D 89 mm |
| Front Mounting Bolts | M5 × 6 positions |
| Body Mounting Fit (ID × Depth) | φ60 H7 × 2 mm |
| Operating Medium | Compressed Air |
| Operating Pressure | 0.15 – 0.6 MPa |
| Body Material | Steel (Fe) |
| Weight | 3030 g |
| Max Allowable RPM | – |
| External Gripping Force (Calc.) | 697 N @ 0.1 MPa |

🧰 Integration Benefits
- ✅ Ideal for inspection jigs and smart automation setups
- ✅ Sensor-compatible design for advanced monitoring
- ✅ High repeatability for precision-critical tasks
- ✅ Supports coolant flow and chip removal
- ✅ CAD and PDF documentation available for download

✨ NPC-4FSS-33 – A smart pneumatic chuck engineered for precision, sensor integration, and intelligent inspection systems.