Citizen Miyano ABX-65SYY

The Citizen Miyano ABX-65SYY is a large-bore, multi-axis CNC lathe with twin Y-axis capability, designed for complex part processing on components up to 65mm bar diameter. The ABX series represents the pinnacle of Citizen's Miyano fixed-headstock lineup—machines built for shops that need maximum multi-tasking capability without stepping up to a full mill-turn platform. The 'SYY' designation indicates sub-spindle with dual Y-axis (Y1 and Y2), enabling off-centerline machining on both the main and sub-spindle simultaneously.

The ABX-65SYY features a main spindle and sub-spindle both equipped with independent Y-axis travel, providing true dual-channel multi-tasking capability. While the upper turret machines features on the main spindle side using X1, Z1, Y1, and C1 axes, the lower turret can simultaneously perform milling, drilling, or tapping on the sub-spindle side using X2, Z2, Y2, and C2 axes. This dual-channel processing dramatically reduces cycle times on parts that require extensive work on both ends.

The 65mm bar capacity and powerful spindle motor handle the full range of industrial materials at production-worthy cutting parameters. The main spindle reaches 4,500 RPM with up to 15 kW of power, providing sufficient torque for aggressive turning in steel, stainless steel, and alloy materials. Live tooling on both turrets spins at up to 6,000 RPM for efficient milling and drilling operations.

Citizen's rigid box-way construction and thermally symmetric design are critical at this capability level—with two turrets cutting simultaneously, the machine must absorb and dissipate significant cutting forces and heat without dimensional drift. The Miyano approach to thermal management ensures parts maintain tolerance from the first piece to the last in a production run, even under sustained dual-cutting conditions.

The ABX-65SYY is positioned for shops that have maximized the capability of single-turret machines and need the next level of productivity. Automotive powertrain components, aerospace fittings, hydraulic manifold bodies, and complex medical devices are typical applications where the dual Y-axis capability eliminates secondary operations that would otherwise require separate machine setups.