| 摘要 |
PROBLEM TO BE SOLVED: To lubricate bearings for a long period of time even in the case of driving a driving motor under the high load. SOLUTION: A lubrication device for an injection molding machine is provided with a casing, a rotor and bearings 51 and 52 supporting the rotor rotatably. Grease reservoirs 111 and 112 formed adjacent to the bearings 51 and 52 and grease feed openings 114 and 116 connecting the outer peripheral face of the casing with the grease reservoirs 111 and 112 are provided on the casing. The rotor is a hollow rotor shaft on which the rotor of the driving motor is fixed. Grease fed through the grease feed openings 114 and 116 and stored in the grease reservoirs 111 and 112 are fed sufficiently to the bearings 51 and 52. As the bearings 51 and 52 are lubricated sufficiently, the durability of bearings 51 and 52 can be improved.
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