| 摘要 |
PROBLEM TO BE SOLVED: To provide a sintered metal gear eliminating shortage of lubricating fluid at a bearing part, supplying lubricating fluid to a bearing surface without stagnation, and improving wear resistance at a tooth part. SOLUTION: The sintered metal gear 1 comprises the tooth part 3 and the bearing pat 2 which are formed in cylindrical shape out of sintered metal, and is formed by, for example, press-fitting and fixing the bearing part 2 in an inner circumference of the tooth part 3. Consequently, the bearing part 2 and the tooth part 3 are integrated under a condition where communication between an inner cavity of the tooth part 3 and an inner cavity of the bearing part 2 near a fix surface is provided. Lubricating oil is impregnated in the bearing part 2 and grease is impregnated in the tooth part 3. COPYRIGHT: (C)2009,JPO&INPIT
|
