Citizen Miyano BNE-65 THLMY

The Citizen Miyano BNE-65 THLMY is a large, high-capability multi-tasking turning center in Citizen Miyano's BNE series, configured for maximum versatility at 65mm bar capacity with twin spindles, Y-axis on both spindle sides, and live tooling—a THLMY configuration that enables complete machining of large, complex precision components from bar or chuck in a single setup. The BNE-65 series occupies the top tier of Citizen Miyano's turning center lineup, designed for the part families in aerospace, energy, and industrial precision manufacturing where 65mm bar capacity, substantial spindle power, and multi-axis milling capability all come together in one machine.

The THLMY designation unpacks Citizen Miyano's configuration nomenclature: T (twin spindle/sub-spindle), H (high-power spindle option), L (live tooling with driven tools), M (milling capability), Y (Y-axis). In practice, this means the BNE-65 THLMY runs two synchronized spindles—main and sub—with Y-axis and full live tooling on both sides, high-power main spindle for productive cuts in difficult materials, and comprehensive milling capability for off-center features, keyways, flats, and contoured surfaces directly on the turning center without secondary VMC operations.

The main spindle on the BNE-65 THLMY is rated at 4,500 RPM (appropriate for 65mm diameter turning) with a high-power option reaching 18.5/22 kW continuous/peak, delivering the substantial torque needed for aggressive turning passes in Inconel, titanium, and stainless steel at 65mm diameter. The sub-spindle operates at 5,000 RPM with 7.5/11 kW—more powerful than sub-spindles on smaller turning centers, reflecting the secondary machining demands of large, complex parts. Y-axis travel on both sides covers ±52mm, enabling off-center features and milling at a scale matched to 65mm diameter workpieces.

The 12-station bi-directional turret accommodates up to 12 driven tool positions with VDI 40 or BMT tooling, providing the rigidity and capacity needed for milling operations on large-diameter parts. Rapid traverse rates of 30 m/min (X, Z) and 15 m/min (Y) minimize non-cutting time on programs with extensive axis motion. Maximum turning length extends to 300mm on the main spindle, covering many large-diameter shaft and component geometries.

The Mitsubishi M80 control with Citizen's Miyano-specific software manages the complex multi-axis coordination including main/sub-spindle synchronization, dual Y-axis management, and live tooling speed control. Machine weight reaches approximately 6,500 kg, reflecting the substantial structure required for stability during high-power cuts in difficult materials at 65mm diameter. For aerospace fittings, energy sector components, and large-format medical implant structures, the BNE-65 THLMY represents the most capable Citizen Miyano turning center configuration.