轴采用滚珠螺杆传动精度佳，摩擦系数小。
X axis and Y axis adopt ball spiral rods with excellent precisions and low friction factors.
含特殊原料原橡胶轴承，摩擦系数小，更省电。
With special raw material (raw rubber bearing) and small friction coefficient; electricity -saving.
SBC直线导轨的摩擦系数小，具备良好的重复性。
SBC linear guides have low coefficient of friction and excellent repeatability.
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