09/10/2026
For Sale : used Grotnes CNC 4-Axis Horizontal Concentric Spin-Forming Machine for Tube Forming – Year 2021 made in USA / REQUEST MACHINE INSPECTION
| Grotnes CNC 4-Axis Horizontal Concentric Spin-Forming Machine for Tube Forming – Year 2021 | ||
|---|---|---|
| Specification | Metric | Imperial |
| Manufacturer | GROTNES | |
| Machine Type | CNC Horizontal Concentric Spin-Forming Machine for Tube Forming | |
| Year | 2021 | |
| Number of Axes | 4-Axis | |
| CNC Control | Siemens Sinumerik CNC | |
| Power | Approx. 22.4 kW | 30 HP |
| Equipment | ||
| Induction Heating System | Ambrell 8310LI Easy-Heat | |
| Chuck | Collet Chuck | |
| Hydraulic Power Unit | Included | |
| Through Hole | Larger Through Hole | |
| Chuck Configuration | Larger Chuck | |
| Applications | ||
| Primary Application | Tube Forming / Spin Forming | |
| Tube Forming Capability | Designed for forming tube ends and middle sections | |
| End Cone Forming | Spin-forming process can eliminate the need for welded end-cone transitions and associated assembly operations | |
| Production Configuration | Suitable for standalone or fully automated production cells | |
| Supported Spin-Forming Processes | Concentric, Eccentric and Oblique Spin Forming | |
| Concentric Spin Forming | ||
| Concentric Forming Capability | Creates reduced-end profiles concentrically aligned with the tube center axis | |
| Dynamic Length Control Technology | Available on certain Grotnes concentric spin-forming machine configurations | |
| Active Tailstock | Available on Grotnes concentric spin-forming equipment | |
| EST & OST Spin-Forming Technology | ||
| EST | Eccentric Spinning Technology | |
| OST | Oblique Spinning Technology | |
| Eccentric Forming Capability | Allows reduced-end profiles to be formed eccentric to the tube center axis | |
| Oblique Forming Capability | Allows reduced-end profiles to be formed at an oblique angle to the tube center axis | |
| Part Rotation Requirement | EST / OST processes can form profiles without rotating the part | |
| Transition Angle Programming | Complex transition angles can be produced through CNC program changes | |
| Automatic End Trimming | Can be equipped with automatic trimming for shell ends | |
