The vertical milling spindle is made of SCM4 with the sleeve plated with HCr.The worm gears and various copper parts are made of phosphor bronze with strictly accurate grinding.

• 立铣头主轴材质采SCM4，主轴套管镀硬烙，经严谨精密研磨加工处理制造、主轴轴承经间隙消除调整组装，确保主轴稳固精度。