| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device for a worm gear excellent in durability, wherein a thrust bearing is made of a resin to reduce its weight and wear volume of the thrust bearing is reduced thus hardly causing vibrations and noises.SOLUTION: In a bearing device for a worm gear, a worm 1 in the worm gear is supported by a washer-shaped thrust slide bearing 2 and a bush-shaped radial slide bearing (oil-impregnated sintered bearing) 3. The thrust slide bearing 2 of the bearing device for the worm gear is composed of a thrust slide bearing made of a resin containing a polyether ether ketone resin of 95 wt.% or more, which is an aromatic polyether ketone resin. A wear volume of the thrust slide bearing 2 is reduced and durability thereof is improved, and thus vibrations and noises of the worm gear hardly occur and durability thereof is improved. |
