NEW JOHNFORD ST-40H

Johnford ST Series horizontal turning centers feature a one piece, 60˚ slant-bed torque tube design. The torque tube, or hole cast through the center of the slant bed, maximizes rigidity and dissipates heat. For optimum strength and accuracy, the machines are cast from rigid Meehanite iron.

Square box ways provide rigidity for heavy turning, and hand-scraped sliding surfaces are coated with Turcite B to enable high rapid traverse rates and accurate positioning. Double-nut ballscrews are pre-tensioned to minimize thermal growth.

To ensure precision and thermal stability, the headstock, tailstock and saddle all are mounted on the same plane at a 60˚ angle. The coolant tank is separate from the machine base to prevent heat transfer from the coolant to the machine casting, minimizing the effect of changing temperatures and facilitating cleanout and maintenance.