Johnford - Roundtop Machinery Company SV-48HN VERTICAL MACHINING CENTER

This vertical machining center features a robust table measuring 51.2" x 28", with a maximum workpiece load capacity of 3,300 lbs, supporting heavy-duty machining operations. It employs a high-speed vertical spindle with an HSK-63A taper, delivering up to 24,000 RPM and powered by a 31 HP (30-minute rating) motor, providing high-performance milling capability. The spindle supports automated tool changes via a 24-station arm-type automatic tool changer (ATC), with an optional expansion to 120 tools, enabling extended, unattended machining runs. Tool change chip time is effectively instantaneous (0.00 seconds), enhancing cycle efficiency. The machine supports optional pallet changing with up to two pallets, allowing quick workpiece swaps to maximize throughput. It has three controlled linear axes (X, Y, Z) with travels of 48", 28", and 25" respectively, each capable of rapid traverse speeds up to 944 inches per minute for fast repositioning. A 360° rotary B axis is included for enhanced machining flexibility, enabling complex angular operations. The system optionally supports a fourth linear axis to extend versatility. This configuration ensures high rigidity and accuracy, suitable for heavy and large parts machining with precise multi-axis control. The use of HSK-63A taper tooling supports excellent spindle-tool connection stiffness and high-speed capability, vital for demanding milling and finishing tasks. Overall, this vertical machining center is designed for high productivity, accommodating large loads and advanced tooling automation in industrial manufacturing environments.