Hardinge Bridgeport Series I CNC

The Hardinge Bridgeport Series I CNC is the CNC-equipped evolution of the iconic Bridgeport Series I knee mill, one of the most widely recognized manual machine tools in the history of metalworking. Hardinge acquired the Bridgeport brand and continues to produce CNC variants of the Series I that retain the recognizable vertical knee mill form factor while adding CNC control of the quill (Z-axis) and X/Y table axes for repeatable, programmable machining without the footprint or cost of a full machining center.

The Series I CNC maintains the classic J-head with a 1.5 hp (Vari-Speed) or 2 hp spindle motor, R8 spindle taper, and the variable-speed belt drive that made the Bridgeport a shop-floor standard for decades. The CNC conversion adds servo drives and a modern control to the knee table and quill, enabling programmed contouring, drilling cycles, pocket milling, and engraving operations. The knee adjustment remains manual, preserving the traditional setup method while automating the productive machining axes.

For shops that already operate Bridgeport Series I manual mills, the Series I CNC offers a familiar upgrade path: the same tooling (R8 arbors and collets), the same work envelope (9 x 42 or 9 x 49 inch table), and the same footprint, but with CNC repeatability for production runs and complex geometry. The machine is particularly valued in tool and die shops, educational institutions, prototype shops, and small manufacturers who need CNC capability without the capital investment of a full VMC.

Hardinge positions the Series I CNC as both a training platform and a light-duty production machine. Its heritage in machine tool education gives it a unique place in the market, and many manufacturing programs use Bridgeport Series I CNC machines to teach CNC fundamentals before students progress to vertical machining centers.