OKUMA & HOWA MILLAC-550H HORIZONTAL MACHINING CENTER

Technical Description

The OKUMA & HOWA MILLAC-550H is a robust 4-axis horizontal machining center designed for high-precision and efficient machining. It features X, Y, and Z-axis travels of 31.5" (800 mm), 31.5" (800 mm), and 27.6" (700 mm) respectively, providing a substantial working envelope suitable for diverse machining applications. The machine is equipped with a powerful 40 HP AC spindle capable of speeds up to 10,000 RPM, with a CAT-50 or BT50 taper spindle nose supporting a wide range of tooling. The spindle delivers high torque and speed stability for precise material removal and finishing operations. This machining center incorporates a 60-tool carousel magazine, enabling extended unmanned operation with rapid tool changes averaging 5-6 seconds chip-to-chip, and supports tools weighing up to 40 lbs. The pallet system supports dual pallets of 21.65" x 21.65" (550 mm x 550 mm) size and can handle workpieces up to 1,764 lbs (approximately 800 kg), optimizing production efficiency. The full 4-axis capability includes a rotary A-axis capable of 360 degrees, enhancing machining versatility for complex parts. Control is managed via a Fanuc 16i-M CNC system with a 10.4" color screen, supporting advanced features such as linear and circular interpolation, helical interpolation, rigid tapping, and tool compensation for high-accuracy machining. The machine’s overall weight is approximately 33,000 lbs, reflecting its stable structure and precision engineering. Additional equipment includes a coolant pump and tank, manual pulse generator, and RS-232 communications port for program transfer and monitoring.