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The Ecoca MT-310-750 and MT-310-1000 are heavy-duty, high precision CNC turning centers designed for job shops that require robust cutting performance and operational flexibility, the company says. The machines are built from Meehanite iron with a rigid 30-degree slant-bed design. Square box ways are said to have rigidity for heavy-duty turning, allowing the machines to take advantage of their 30-hp, dual-wound, high torque spindle motors.
Hand-scraped Turcite-B is applied to all mating/sliding surfaces to ensure high rapid traverse rates and accurate positioning. To ensure precision and thermal stability, the headstock, tailstock and saddle are all mounted on the same place at a 30-degree angle. Coolant tanks are separate from the machine bases to prevent the heat transfer from the coolant to the machine casting, promoting easy cleaning and maintenance. To further ensure accuracy and precision, the double-nut ballscrews are pretensioned to eliminate thermal growth.
The MT-310’s precision spindle structure is mounted using precision, double-row roller bearings in conjunction with angular-contact ball bearings for high rigidity and accuracy. The inner and outer linings of the spindle quill are precision ground for fit with the spindle to ensure concentricity and accuracy. The spindle is driven by a 30-hp dual wound high torque motor, which provides complete power through the rpm range.
Each MT-310 model features a swing over bed of 24″ and a standard tuning diameter of 15.7″ Maximum turning diameter is 17.7″ (13.5″ with the live-tooling option). With the MT-310-750, maximum Z-axis travel is 30″, and distance between centers is 30.5″. For shops needing more Z-axis travel, the MT-310-1000 provides nearly 40″ in the Z-axis. The distance between centers is 43″.
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The machine offers flexibility and high-speed machining of both barstock and chuck parts complete in one setup.