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WHN Series
TOS WHN 13 CNC Horizontal Boring Mill
Description
The TOS WHN 13 CNC is widely considered the “gold standard” for heavy-duty horizontal boring mills. Manufactured by TOS Varnsdorf in the Czech Republic, this machine is engineered specifically for the precision machining of large, heavy prismatic parts—think engine blocks, large gearbox housings, and industrial molds.
Technical Machine Profile
| Feature | Specification (Standard WHN 13) |
| Spindle Diameter | 130 mm (5.1″) |
| Spindle Travel (W-Axis) | 800 mm (31.5″) |
| Table Load Capacity | Up to 12,000 kg (26,455 lbs) |
| Spindle Speed | 10 – 3,000 RPM (High-torque geared head) |
| Tool Changer | 40 to 60 positions (Automatic) |
| Control System | Typically Heidenhain TNC or FANUC |
Core Engineering Advantages
1. High-Rigidity Column Design
The WHN 13 features a massive, thermally stable cast-iron column. Unlike lighter milling centers, this machine is designed to absorb the intense vibrations of large-diameter boring and heavy face-milling. This makes it ideal for hardened steel and cast-iron components where surface finish is critical.
2. The Extendable Spindle (W-Axis)
The 130 mm nitrided spindle is the heart of the machine. Its 800 mm travel allows it to reach deep inside large workpieces while maintaining high concentricity. This is a game-changer for boring deep holes that must stay perfectly straight over long distances.
3. Precision Rotary Table
The CNC-controlled rotary table allows for 4-axis machining in a single setup. With its high-precision positioning (often 0.001°), Mudar-M clients can machine all four sides of a massive part with extreme geometric accuracy, reducing setup errors and labor costs.
4. Versatility for Industrial Markets
The WHN 13 is a “multi-tasking” powerhouse. It can perform:
Heavy-duty milling with high metal removal rates.
Precision boring for bearing seats.
Complex drilling and tapping patterns on oversized parts.
Core Engineering Advantages
1. High-Rigidity Column Design
The WHN 13 features a massive, thermally stable cast-iron column. Unlike lighter milling centers, this machine is designed to absorb the intense vibrations of large-diameter boring and heavy face-milling. This makes it ideal for hardened steel and cast-iron components where surface finish is critical.
2. The Extendable Spindle (W-Axis)
The 130 mm nitrided spindle is the heart of the machine. Its 800 mm travel allows it to reach deep inside large workpieces while maintaining high concentricity. This is a game-changer for boring deep holes that must stay perfectly straight over long distances.
3. Precision Rotary Table
The CNC-controlled rotary table allows for 4-axis machining in a single setup. With its high-precision positioning (often 0.001°), Mudar-M clients can machine all four sides of a massive part with extreme geometric accuracy, reducing setup errors and labor costs.
4. Versatility for Industrial Markets
The WHN 13 is a “multi-tasking” powerhouse. It can perform:
Heavy-duty milling with high metal removal rates.
Precision boring for bearing seats.
Complex drilling and tapping patterns on oversized parts.