| 摘要 |
993,127. Bearings. M. EDA. July 21, 1961 [Aug. 23, 1960], No. 26608/61. Heading F2A. [Also in Division B3] For guiding a spindle 1 in a gear-shaping machine for rotary and reciprocating movement. a bearing 12 comprises a plurality of balls 13 located by a cylindrical retainer 14, The spindle is reciprocated by a rack-sleeve 3 prevented from rotation by balls engaging a V-groove. The ball-mounting is sealed at each end by covers 15, 16. |
