Used TOS Horizontal Boring Mills for Sale 148

For heavy fabrications, gearbox housings, and weldment machining, a horizontal boring mill is the working tool, and TOS Varnsdorf machines deliver that capability at the most accessible prices in the class. The WHN 13 (130 mm spindle, tables commonly 1,800 × 2,200 mm) is the volume model, surrounded by the smaller WHN 110/W 100 class and larger WHN 15 machines. The fleet on the used market spans everything from original 1980s units with conventional controls through factory CNC machines to professionally retrofitted examples carrying Heidenhain TNC controls and digital drives.

Geography is part of the value: Exapro's roots in Czechia put it at the centre of the densest TOS installed base, and listings from Czech, Slovak, Polish, and Hungarian sellers are common, often at prices well below equivalent Western-built borers like Union or Pama. Retrofit economics favour TOS too, since the castings justify new controls and several specialist firms rebuild these machines as a standing business.

Buying a used TOS horizontal boring mills: what to check

Spindle and quill condition decide everything: measure spindle runout, check quill extension for droop and play across full travel, and inspect the clamping system. Test the facing head if fitted. On the table, verify rotation indexing accuracy and check for wear patterns from decades of heavy loading; measure backlash on all axes.

Distinguish original machines from retrofits and judge them differently: for retrofits, ask who performed the work, what was replaced (ballscrews, drives, scales), and whether documentation and geometry protocols exist. For original machines, factor realistic retrofit costs into your offer. Confirm power and foundation requirements, as these machines commonly exceed 20 tonnes. Inspect the spindle quill for play at full extension and check facing head function where fitted, as these wear items define a boring mill's real accuracy.

On Exapro, used TOS boring mill listings show spindle diameter, table size, control, photos, and location, with strong availability across Central Europe. Compare machines and submit an enquiry through the listing page on Exapro to request geometry reports and inspection.