FZ-60 铜+钢球 Brass material+steel ball
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FZ-61 树脂+钢球 POM material+steel ball
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FZ-62 铝+钢球 Aluminium material+steel ball
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优点与用途 Advantage and application scope
传统的具有相对运动的孔与轴是有一定间隙的,并孔与轴之间的运动摩擦系数较大,使用钢球保持圈后,使轴与孔不直接接触,而是中间通过有微量过盈的钢球,因而运动精度高,滚动摩擦代替了滑动摩擦,滚动灵活,摩擦系数小,使用寿命长、在既有转动、又有移动的场合,用无油或加油的轴套与轴相配,虽然能满足,但运动精度较低,用滚动轴承,只能满足轴相对转动的场合,而钢球保持圈,则上述二个条件均满足,目前已广泛应用于冷冲模架、高精度机床、机床附件以及要求高精度轴向或轴径向同时运动场合。 As the traditional work-craft has some grudge between bushing with posts, and the coefficient of friction is larger, now we have changed the work-ways to steel-ball directly face to face guide bushing, so the precision is machine, die machine, high precision machine which need rotation and vertical motion.
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