| 摘要 |
The rotatable fork-plate of a fork lift truck is mounted to a large-diameter stewing gear, and the stewing bearing fits inside. In place of the usual ball bearin g, a plastic strip is curved around into a circle, and placed between the stewing gear an d the stator frame. The circle is not complete, in that a circumferential gap is left between the ends. The rotor and stator are formed with suitable faces for supporting journal forces, and thrust forces both ways, via the plastic stri p. The preferred profile of the strip is channel-shaped. The strip floats circumferentially between the rotor and the stator. The plastic strip being corrosion free, no seals are provided on the bearing, even for operation near sea-water. |
