Juaristi TX3S

The Juaristi TX3S is a floor-type horizontal boring and milling machine built in the Basque Country of Spain, where Juaristi has been manufacturing precision boring equipment since 1941. The TX3S represents the upper end of their table-type boring mill range, featuring a W-axis spindle travel of 800 mm and a robust cast iron column that delivers the rigidity needed for heavy roughing in steel castings, large weldments, and energy sector components. With X/Y/Z travels of 3,000 x 2,000 x 1,500 mm and a 130 mm (5.1 in) spindle diameter, this machine handles the kind of large prismatic work that vertical machining centers simply cannot reach.

The TX3S runs on a Heidenhain TNC 640 or Siemens 840D SL control, both of which support full 5-axis simultaneous machining when equipped with the optional CNC rotary table and automatic head indexing. The spindle delivers 37 kW (50 hp) continuous with speeds to 3,000 rpm, which is more than adequate for boring, facing, and contouring operations in cast iron and structural steel. The quill-type spindle design provides exceptional reach into deep bores and pockets without repositioning the column, a critical advantage when holding position tolerance on large aerospace landing gear housings or power generation turbine casings.

Juaristi machines are known in European shops for their thermal stability and long-term geometric accuracy. The TX3S uses hand-scraped guideways on all linear axes, which provides superior damping characteristics compared to linear rail designs when taking heavy interrupted cuts. Automatic tool changers with 60 to 120 tool capacity are available, and the standard ATC uses a chain-type magazine with BT50 or ISO50 tooling. Probing systems from Renishaw integrate directly through the control for automated workpiece setup and in-process inspection.

Pricing for a new Juaristi TX3S typically falls between $500,000 and $800,000 depending on configuration, table size, and control options. In the North American market, Juaristi machines are less common than Union or TOS Varnsdorf boring mills, but they have a strong presence in European aerospace, energy, and heavy machinery shops. Used TX3S machines from the 2010-2018 era occasionally appear in the $250,000-$400,000 range, primarily through European dealers.