1980 BRIDGEPORT SERIES I VERTICAL MILLING MACHINES

Technical Description

This vertical machining center features a robust R8 spindle taper design optimized for precision machining operations. The work table measures 48 inches longitudinally by 9 inches transversely, accommodating workpieces up to 750 pounds. The three-axis configuration provides X-axis travel of 32.5 inches (expandable to 36 inches), Y-axis travel of 11.25 inches, and Z-axis travel of 5 inches, enabling comprehensive positioning for complex part geometries. The vertical spindle orientation delivers mechanical variable speeds up to 4,200 RPM with a 3 HP motor rated for continuous 30-minute operations, making it suitable for tapping, drilling, and milling applications across diverse material types. The R8 spindle taper, specified at 3.5 inches per foot with an angular measurement of approximately 16.26 degrees, accommodates both collets and solid tapered tool holders. The machine employs manual tool carrier operation with single-tool capacity, though an optional second tool station is available for improved workflow efficiency. Rigid construction with hardened and ground ways ensures dimensional stability and reduced vibration during cutting operations. This compact vertical mill excels at single-sided milling and drilling tasks, making it ideal for job shops, tool and die work, prototype development, and small-to-medium production runs requiring precision and repeatability in metalworking applications.