Johnford - Roundtop Machinery Company DMC-900HN VERTICAL MACHINING CENTER

Technical Description

The Johnford DMC-900HN is a precision vertical machining center engineered for high-speed production and complex part manufacturing. This three-axis machine features a robust 39.4" × 33.5" work table capable of supporting workpieces up to 6,600 lbs, providing substantial capacity for mid-sized components. The spindle utilizes HSK-63A tooling, a modern standard offering superior rigidity and rapid tool changes. The machine delivers dual spindle speed options: 24,000 RPM for high-speed finishing operations or an optional 18,000 RPM configuration, with power ratings of 31 HP (standard) or 56 HP (optional) to accommodate varying cutting requirements. All three linear axes—X, Y, and Z—provide 36", 36", and 30" of travel respectively, enabling consistent rapid traverse rates of 944 ipm and cutting feedrates of 472 ipm across all axes for efficient chip removal and cycle time reduction. The automatic tool changer (ATC) accommodates 24 tools standard, with an optional 120-tool capacity magazine for extended unattended operation, minimizing downtime between job setups. The machine's design emphasizes precision and thermal stability through rigid Meehanite castings and advanced spindle technology, making it ideal for aerospace, medical device, and precision automotive applications where surface finish quality and dimensional accuracy are critical. The combination of generous workspace, powerful spindle options, and flexible tooling capacity positions the DMC-900HN as a versatile solution for both production runs and prototyping work.