产品特性：
·全新的齿轮箱变速结构，通过拨档齿轮啮合来变换主轴转速，操作便捷，换速可靠
·相对于皮带换速，不需要拆装挂轮罩，节省了操作者的工作时间，提高了工作效率
·具有传动安全可靠，传动精度高等优点
Product characteristics:
·Adopt brand-new gear-box transmission structure and change the spindle speed through the shift gear engagement which is more convenient by operation and more reliable when change the speed
·Compared to speed change by belt,no need to disassembly and assembly the change-gear cover which can save the working time of operator and also improve the working efficiency
·More safety and reliable by transmission,and higher transmission accuracy
