Cutting tool・tooling

NAKASEIKI

🟨 NPC-3RS-28 – Wedge-Type Chuck with Extended Stroke
Versatile 2-Finger Chuck for Square Parts with Diameter Variability
The NPC-3RS-28 is a 2-finger wedge-style pneumatic chuck designed for gripping square or variable-diameter components. With a long jaw stroke and robust aluminum body, it offers excellent adaptability for stationary setups and robotic integration.

✨ Key Features
- ✅ Wedge-Type Mechanism – 2 Fingers
→ Ideal for gripping square workpieces with stable force
- ✅ Long Stroke – φ8 mm per finger
→ Accommodates a wide range of diameters for flexible applications
- ✅ Dual Side Air Ports
→ Simplifies pneumatic routing and installation
- ✅ High Repeatability – ±0.01 mm
→ Ensures consistent precision in automated cycles
- ✅ Aluminum Body – 1280 g
→ Durable and lightweight for fixed or robotic setups
⚙️ Technical Specifications
| Item | Value |
| Model | NPC-3RS-28 |
| Chuck Type | Wedge, 2 fingers |
| Chuck Size | 3 inch |
| Jaw Stroke per Finger | φ8 mm |
| Repeatability Accuracy | ±0.01 mm |
| Operating Pressure | 0.15 – 0.6 MPa |
| Clamping Force (Outer Grip) | 226 N @ 0.1 MPa |
| Material | Aluminum (Al) |
| Weight | 1280 g |
| Mounting Hole Pitch | P.C.D 70 |
| Top Mounting Bolts | M5 × 4 |
| Bottom Fit Dimensions | φ50 +0.05/0 × 2 mm |
| Working Fluid | Compressed Air |
| Max Rotation Speed | Not specified |

🔧 Applications
- ✔ Gripping square components with varying diameters
- ✔ Suitable for stationary setups or robotic arms
- ✔ Ideal for automated systems requiring long-stroke flexibility

🟨 NPC-3RS-28 – A long-stroke wedge chuck built for gripping square parts with precision and adaptability.