双轴心直线导轨是滚轮直线导轨的一种，由于它具有高速、低摩擦等特点，又称为高速直线导轨、静音直线导轨，目前已经逐渐成为机械行业发展的主流，使得很多的小型机械设备的工作效率都有效增长。滚轮直线导轨的主要功能是将旋转运动转化成直线运动，或者可以将原件的扭矩转换成轴向反覆作用力，通常采用铁或钢制成，韧性大，适合大型机械。

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