Patent ID: 8684848

Claim:
A shaft coupling apparatus in which a leading end of a first shaft and a leading end of a second shaft face each other and are coupled together such that rotational transmission is possible, the shaft coupling apparatus comprising: a first leading end surface of the leading end of the first shaft, the first leading end surface forming a cylindrically-shaped first hole, the first hole having a central axis that is different from a rotational central axis of the first shaft; a second leading end surface of the leading end of the second shaft, the second leading end surface forming a cylindrically-shaped second hole, the second hole having a central axis that is different from a rotational central axis of the second shaft; a pin that is inserted through the first hole and the second hole respectively, portions of the pin that are inserted through the first hole and the second hole having a cross-sectionally circular shape that corresponds to an inner diameter of the first hole and of the second hole, and the pin being pressure fitted with respect to the first hole and loosely fitted with respect to the second hole; and both the leading end of the first shaft and the leading end of the second shaft being disposed inside a bearing that commonly supports the first and second shafts, the bearing including a rolling element interposed between the inner race and the outer race.