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BUB E CNC
The CNC grinder BUB E CNC is a fully CNC‑controlled grinding machine with three controlled axes X, Z and C. It is designed for precise longitudinal and plunge grinding of external cylindrical and conical surfaces, including profile and transition grinding. Robust cast‑iron construction, ball screws and servomotors ensure high accuracy, stability and repeatable machining of workpieces up to 500 kg.
CNC Grinder BUB E CNC – Universal cylindrical grinding machine with full CNC control
The CNC grinder BUB E CNC is a fully CNC‑controlled grinding machine equipped with three controlled axes: X axis (grinding wheel head infeed), Z axis (longitudinal table movement) and C axis (work head rotation). The machine is primarily designed for precise grinding of external cylindrical and conical surfaces, using both longitudinal grinding and plunge grinding methods.
The BUB E CNC grinder also enables profile grinding, grinding of various transition radii and shape‑related surfaces. Depending on the configuration, workpieces can be ground between centers, clamped in a chuck, or mounted on a magnetic table. Swivelling of the work headstock, grinding spindle and upper table allows accurate cone grinding and complex contour machining.
Both the grinding wheel head infeed and table feed are driven by ball screws and servomotors, ensuring smooth motion, high positioning accuracy and excellent repeatability. CNC control allows simple programming of grinding cycles and their efficient reuse in production.
Machine bed and tables
The machine bed as well as the lower and upper tables are made from high‑quality grey cast iron. After casting, all parts undergo an artificial ageing process to eliminate internal stresses. A key factor for precise machine geometry is manual scraping of the guideways, which ensures optimal sliding properties and precise guidance of moving components.
Grinding wheel head
The grinding wheel head is mounted on high‑precision angular contact bearings with increased rigidity, ensuring excellent radial and axial stiffness. The design allows grinding wheel peripheral speeds of 10–50 m/s and provides long service life with minimal maintenance requirements. Grinding wheel runout is kept below 2 µm.
Additional equipment and capabilities
The machine is equipped with a precision work headstock, tailstock with high clamping force, high‑accuracy ball screws in the X and Z axes and a centralized pressurized lubrication system. The coolant filtration system can be configured according to the machined material, with options including magnetic separators, paper filters or combined systems.
The BUB E CNC grinder enables machining of workpieces weighing up to 500 kg, making it suitable for single‑piece, small‑batch and repetitive production requiring stable accuracy and reliable grinding performance.
