Cutting tool・tooling

NAKASEIKI

🔩 NPC-4FS-31 – Precision Pneumatic Chuck for Machining & Inspection
Ultra-Precise. Durable. Ideal for High-Accuracy Applications.
The NPC-4FS-31 is a wedge-type pneumatic chuck designed for machining, part transfer, and precision measurement tasks. With a repeatability of just 2 microns, it delivers exceptional accuracy for demanding industrial applications. Its robust construction and compact stroke make it ideal for high-precision setups.

⚙️ Key Features
- 🧩 Wedge Mechanism – 4 inch / 3 fingers
→ Ensures synchronized gripping with high stability
- 📏 Jaw Stroke – φ1 mm
→ Designed for ultra-precise clamping of small or delicate components
- 🎯 Repeatability Accuracy – 0.002 mm (2 μm)
→ Ideal for inspection systems and precision machining
- 🌬️ Dual Side Air Port Configuration
→ Simplifies pneumatic integration and setup

📐 Technical Specifications
| Item | Value |
| Model | NPC-4FS-31 |
| Repeatability Accuracy | ±0.002 mm |
| Number of Fingers | 3 |
| Jaw Stroke | φ1 mm |
| Mounting Hole Pitch | P.C.D 89 mm |
| Front Mounting Bolts | M5 × 6 positions |
| Body Mounting Fit (ID × Depth) | φ75 H7 × 3 mm |
| Operating Medium | Compressed Air |
| Operating Pressure | 0.15 – 0.6 MPa |
| Body Material | Steel (Fe) |
| Weight | 1860 g |
| Max Allowable RPM | – |
| External Gripping Force (Calc.) | 1192 N @ 0.1 MPa |

🧰 Integration Benefits
- ✅ Suitable for machining, transport, and high-precision measurement
- ✅ High repeatability ensures consistent quality
- ✅ Durable steel body for long-term industrial use
- ✅ CAD and PDF documentation available for download

✨ NPC-4FS-31 – A high-precision pneumatic chuck built for accuracy-critical applications in modern manufacturing.