The machine’s construction is built on a high-rigidity casting iron frame, featuring heavy walls and reinforced ribs to provide excellent damping and stability. It includes an enlarged column and base, increasing stability and rigidity while offering an ample distance of up to 19.3 inches from the table surface to the spindle centerline.

For superior grinding performance, the SUPRA 618II is equipped with a high-precision cartridge spindle supported by four preloaded, high-precision angular contact ball bearings and driven by a V3 class motor. The machine ensures long-term accuracy and anti-wear protection for its guideways:

• The saddle rests on hand-scraped double V ways coated with Turcite-B.
• The table rests on precision ball rolling ways.

Both guideway systems are equipped with an automatic lubrication system to prevent premature wear and are meticulously hand scraped or hardened and ground to a tolerance of 1/10,000 inch per 12 inches.

For handfeed models, the table movement uses a cable with high tensile steel cores for smooth movement and longevity, and the table handwheel can be indexed to nine positions without backlash for convenient operation. The 618AH II model features a hydraulic table drive.

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