| 摘要 |
<p>A feed screw wherein a ball screw member (2) or a slide screw member (2a) has a driving force transmission shaft (4 or 4a), and a bearing member (6 or 6a) fitted around the driving force transmission shaft (4 or 4a), the same transmission shaft (4 or 4a) being formed of aluminum or an aluminum alloy, the bearing member (6 or 6a) being formed of any one of a synthetic resin, aluminum and an aluminum alloy, the members formed of aluminum or an aluminum alloy being surface treated and preferably further surface finished.</p> |
