C.R. Onsrud Inc. 241G18R - ROLLER HOLD-DOWN SERIES VERTICAL MACHINING CENTER

This CNC vertical machining center features a **large 96" x 48" worktable** designed for heavy-duty machining without integrated support rotary or index tables. It offers **3-axis movement** with travels of 241" (X), 60" (Y), and 11" (Z), capable of a **max feed rate of 2,500 ipm** and rapid traverse speeds up to 3,000 ipm, ensuring fast, precise material engagement. The spindle is vertically oriented with an **HSK 63F taper**, delivering a high rotational speed up to **24,000 RPM** coupled with a **30-minute rated power of 18 HP**, enabling high-speed machining with excellent rigidity and thermal stability. Tooling is managed via a 12-station **Automatic Tool Changer (ATC)**, enhancing productivity through quick tool swaps, although no pallet changer is available. The spindle’s HSK 63F interface supports high-speed operation and precise runout, suitable for light to medium cutting tasks typically performed in aerospace, automotive, and mold industries. The machine’s configuration lacks a U axis and rotary table support, focusing on robust three-axis milling and drilling operations. With these specifications, it supports efficient processing of large parts requiring extended X-axis travel and precision machining at high spindle speeds and horsepower, suitable for diverse materials including aluminum and composites. The high feed and rapid traverse rates optimize cycle times, making this center ideal for demanding production environments requiring a balance of speed, power, and accuracy.