Juaristi MX

The Juaristi MX is a moving-column floor-type horizontal boring and milling machine designed for the largest class of workpieces in heavy industry. Where the TX-series uses a table-type configuration, the MX puts the workpiece on a stationary floor plate or rotary table while the column traverses along the X-axis on floor-mounted guideways. This architecture means workpiece weight is essentially unlimited by the machine — you are limited only by your floor plate and crane capacity. X-axis travels start at 4,000 mm and extend well beyond 10,000 mm in custom configurations, making the MX the go-to platform for power generation, shipbuilding, and large structural fabrication.

The MX features a 150 mm (5.9 in) diameter spindle boring bar with 1,000 mm of W-axis quill extension, giving operators exceptional reach for deep-bore work in turbine casings, large valve bodies, and marine diesel engine blocks. Spindle power ranges from 45 to 60 kW (60-80 hp) depending on configuration, with speeds to 2,500 rpm. The machine accepts both ISO 50 and Capto C8 tooling through the automatic tool changer, which typically carries 60 to 100 tools in a chain or rack magazine.

Juaristi builds the MX column and base from heavily ribbed Meehanite cast iron, stress-relieved and hand-scraped on all bearing surfaces. The moving column rides on hardened and ground box ways with turcite-coated bearing surfaces, providing the vibration damping and load-carrying capacity that linear rail systems cannot match at this scale. Axis positioning uses direct-reading linear scales from Heidenhain, and the standard control is either Heidenhain TNC 640 or Siemens 840D SL with full 5-axis capability when paired with Juaristi's automatic universal head.

New Juaristi MX machines are custom-quoted and typically fall in the $800,000 to $1,500,000 range depending on travel lengths, head configuration, and accessories. The MX competes with Pama Speedram, Innse Berardi, and Skoda HCW series machines in the large floor-type boring mill segment. Used MX machines are rare on the secondary market but when available typically trade between $350,000 and $700,000 depending on age and condition.