SEIWA SAN-20 CNC Hob Sharpening Machine – Year 1999
SEIWA SAN-20 CNC Hob Sharpening Machine
Machine Type: CNC Hob Sharpening Machine
Model: SAN-20
Manufacturer: SEIWA
Country of Origin: Japan
Machine Overview
The SAN-20 is a high-precision CNC hob sharpening machine designed for sharpening gear hobs using both vitrified and CBN grinding wheels.
Spiral gash hob sharpening can be performed fully automatically under CNC control, ensuring consistent accuracy up to Class AA.
Main Technical Specifications
| Maximum Hob Diameter | 220 mm |
| Maximum Hob Length | 270 mm |
| Maximum Hob Module | M16 |
| Minimum Hob Lead | 2600 mm (500 mm) |
| Grinding Spindle Speed | 2300 / 3000 rpm |
| NC Controller | Fanuc 0M |
| Floor Space Required | 2870 × 1620 mm |
| Machine Weight | 5200 kg |
Key Advantages
- Supports vitrified and CBN grinding wheels
- Fully automatic CNC-controlled spiral gash sharpening
- High precision suitable for Class AA hobs
- Rigid construction for stable grinding performance
- Reliable Fanuc CNC control system
Application: Precision sharpening of gear hobs for automotive, industrial gearbox, and high-accuracy gear production.
