FZ型直线轴承 FZ BALL RETAINER SERIES
产品简述:
FZH（铜基）；FZL（铝基）；FZP（树脂基）钢球保持圈，分别以铜合金、硬铝合金、POM树脂为基体，并在其外圆表面上，加工出排列有序、大小适当，形状特殊的孔穴，在其孔穴中镶入滚动轴承钢球。孔口采用最新的沟槽圆周锁球工艺，有效地解决了传统点式锁球和压痕锁球不能完全防止钢球脱落的难题。孔底加工出90º止口使钢球在孔内自由转动而不脱落。由于钢球的直径大于保持圈的壁厚，所以在使用时钢球高出保持圈内、外圆表面，直接与相配的孔和轴接触，使基体（保持圈）浮于中间，并且相配的孔与轴半径之差小于钢球直径，即钢球与之配合为过盈配合，配合精度高，轴与孔相对运动灵活。是保持圈的更新换代产品。
PRODUCT BRIEF:
FZH.FZL.FZP.BALL RETAINER ARE AS COPPER,ALUMINIUM,POM BASE.THEY ARE MACHINED SOME REGULAR HOLES AND EMBEDDED THE STEEL-BALL INTO.THE NEW WORK-CRAFT WILL PREVENT THE BALL GETTING OUT OF AS OLD.AS THE BALL DIAMETER IS LARGER THAN THE RETAINER'S THICKNESS,SO IT WILL FACE TO FACE DIRECTLY WITH GUIDE BUSHING, THAT WILL BRING HIGHPRECISION MATCH.NOW THE BALL RETAINER SERIES ARE DESIGNED TO ROTATE ON THE POST,AS WELL AS MAINTAIN ITS VERTICAL MOTION.WE BELIEVE THIS WILL GIVE YOU THE BENEFIT OF INCREASING ACCURACY.
优点与用途:
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磨擦系数较大，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，滚动磨擦代替了滑动磨擦，滚动灵活，磨擦系数小，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的相配，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，则上述二个条件均能满足，目前已广泛应用于冷冲模滚动模架、高精度机床、机床附件以及要求高精度轴向径向同时运动场合。
ADVANTAGES AND APPLICATION SCOPE:
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 IMPROVED.IT COMPOSES OF BOTH ACTIVE ROLL AND LOWER FRICTION COEFFICIENT,NOW THEY HAVE BEEN WIDELY USED IN PUNCHING MACHINE,DIE MACHINE,HIGH PRECISION MACHINE WHICH NEED ROTATION AND VERTICAL MOTION.
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