SE 820 Numeric service

SE 820 Numeric service is provided for the CNC universal center lathe originally manufactured by TOS / TRENS Trenčín, designed for machining large rotational components in technologically demanding production environments. The SE 820 NUMERIC enables precise and stable machining of heavy workpieces where high requirements are placed on machine rigidity, operational safety and long‑term machining accuracy.

Although production of the SE 820 NUMERIC has been discontinued, we continue to provide complete service, spare parts supply, technical support and modernization options to ensure reliable long‑term operation under modern manufacturing conditions.

Characteristics of the SE 820 NUMERIC Lathe

The SE 820 NUMERIC belongs to the category of CNC universal center lathes and is designed for turning external and internal cylindrical, conical and complex contoured surfaces, including all common thread types. In combination with drilling and milling operations, the machine allows machining of complex workpieces made from bar stock, forgings and cut material.

Thanks to its technical parameters, the SE 820 NUMERIC is widely used in mechanical engineering and in the gas, oil and water management industries, where large and heavy rotational parts must be machined with high demands on quality, safety and process reliability.

Machine Design for Large Diameters

The foundation of the SE 820 NUMERIC is its robust machine structure specifically designed for heavy‑duty machining. The spindle headstock with a two‑stage gearbox enables efficient machining of large‑diameter workpieces while maintaining high torque.

Key machine components are stress‑relieved by annealing, ensuring long‑term geometric stability and accuracy throughout the entire service life. Bearings with lifetime grease lubrication contribute to low operating costs and high operational reliability.

Accuracy, Measuring Systems and Machining Stability

The machine is equipped with direct spindle position measurement, providing high accuracy especially during eccentric machining of large diameters. The overall machine design and drive systems ensure a stable cutting process even under high mechanical loads.

The SE 820 NUMERIC is well suited for continuous long‑term operation in demanding industrial environments where repeatability, stability and safe machining of large components are essential.

Operation, Safety and Configuration Flexibility

The SE 820 NUMERIC is an ideal solution for users transitioning from a conventional universal center lathe to CNC technology. It offers simple and comfortable operation combined with a high level of production flexibility.

The machine is equipped with protective enclosures featuring reinforced safety zones, ensuring excellent operator protection. Thanks to a wide range of configuration options, the lathe can be adapted to specific technological requirements, including:

hydraulic workpiece clamping,
hydraulically operated tailstock,
driven tools,
tilting C‑axis,
wide range of turning lengths,
extensive selection of steadies and clamping plates.

SE 820 Numeric Service and Spare Parts

Even though the SE 820 NUMERIC is no longer in production, we provide comprehensive SE 820 Numeric service, including:

service of mechanical, electrical and CNC components,
supply of SE 820 NUMERIC spare parts,
repair and overhaul of headstocks, gearboxes and drive systems,
service of measuring systems,
fault diagnostics and technical audits,
preventive and scheduled maintenance.

If original components are no longer available, we propose technically equivalent replacement solutions with a strong focus on safety, accuracy and long service life.