| 摘要 |
The present invention relates to a ball linear guide having a retainer formed with lubricating plastic which extends a life span of a linear guide. The present invention comprises: a guide rail, a guide block included to be able to move along the guide rail, and a plurality of rolling bodies interposed between the guide rail and the guide block. The ball linear guide has characteristics comprising: the guide block formed with a block, a retainer of forming the circulation path of the rolling bodies by being included on both sides of an axial direction of the block and having a third seal insertion groove on a surface facing outside in a concave form, and a seal member; the block formed in a reversed U-shape having downward extension parts on both sides, formed as unloaded holes are penetrated in the axial direction on the downward extension parts, and has loaded grooves which are concave and extended in the axial direction on a mutual facing surface of the downward extension parts; the seal member is formed with first and second seal parts of having a rod shape, being separated from each other, and being extended in the axial direction; two third seal parts separated from each other in the axial direction and connected with the first and second seal parts on both end parts wherein the third seal parts of the seal member are inserted into the third seal insertion groove on both sides of the axial direction and the first and second seal parts extended in the axial direction; and the retainer formed with self-lubricating plastic in which oil lubricant is impregnated. |
