MIYANO BNA-42S2 CNC LATHES

Technical Description

This is a 5-inch CNC lathe chuck engineered for high-precision workholding in modern turning centers and CNC lathes. The chuck features a bar capacity of 1.65 inches, making it suitable for processing small to medium-diameter round stock, bars, and similar cylindrical workpieces. Rated for maximum speeds up to 6,000 RPM, this chuck delivers reliable performance in high-speed machining operations while maintaining concentricity and minimizing vibration. As a power-operated three-jaw self-centering chuck, it provides automatic workpiece centering with a large clamping range and fast clamping speed. The self-centering design eliminates the need for manual jaw adjustment, reducing setup time and improving productivity in CNC machining environments. The compact, low-inertia construction positively influences spindle dynamics, enabling smoother operation and reduced wear on the machine tool. The CNC control integration allows for automated chuck operation within your machining workflow, enhancing efficiency and repeatability across multiple production cycles. The chuck accommodates various jaw configurations—hard jaws for unfinished surfaces requiring maximum clamping force, or soft jaws for finished workpieces demanding higher precision. Depending on workpiece geometry and processing requirements, this chuck can handle round, hex, or square stock within its specified capacity range. This versatile chuck is ideal for precision production runs, prototype machining, and applications requiring consistent part quality. Proper workpiece overhang management—typically not exceeding 3-4 times the workpiece diameter—ensures minimal deformation and vibration during machining operations.