High-precision N55-BT40 spindle head unit with through-spindle coolant lubrication for extended tool life. Features automatic tool change and BT40 taper compatibility for seamless CNC machining. Durable alloy steel construction with advanced heat dissipation for heavy-duty operations. Ideal for high-speed milling, drilling, and tapping in aerospace and automotive manufacturing. Oil lubricating system ensures smooth performance under continuous operation. Precision-ground components with micron-level tolerances for vibration-free cutting. Compatible with most CNC vertical machining centers for versatile workshop integration. Maintenance-friendly design with easy-access lubrication points for reduced downtime.