| 摘要 |
An anti-friction nut for engagement with an elongate shaft-like member having a groove with opposed walls. The nut body has an axial bore which is adapted to receive the shaft-like member, and a radial bore communicating with the axial bore. The radial bore carries an anti-friction roller mounted by means of two back-to-back ball bearing assemblages. A nose portion of the roller extends into the axial bore and engages one wall of the groove of the shaft-like member. There is a spring in the radial bore which engages the outer race of the inner ball bearing assemblage, and effectively biases the roller in a radially outward direction, away from the shaft-like member. A threaded adjustment plug in the bore engages the outer race of the outer-most ball bearing assemblage, to effect adjustable movement of the roller in radial directions, against the action of the spring. Reduced looseness and backlash are realized.
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