| 摘要 |
PROBLEM TO BE SOLVED: To provide a revolving member-supporting unit, inhibiting the softening of grease enclosed in its inside to prevent the grease from leaking to its outside, also keeping its lubrication state well and capable of keeping the rotation of the revolving member by a regular rotary accuracy stably for a long period of time. SOLUTION: This revolving member-supporting unit U1 is equipped with a main shaft 8, erected extending in a prescribed direction; a multiple number of rotary bearings 2, 4 for supporting the main shaft rotatably, a set of gears G1, G2 installed at each of the one end side of a driving shaft and the main shaft and meshed with each other for transmitting the rotary power of the driving shaft 38 rotated by a driving device 34; a revolving member 32 attached at another end side of the main shaft; and a case 40 for housing the main shaft, rotary bearings and gears. In the unit, a lubricant Ga for lubricating the gears is enclosed, and in the lubricant, carbon black is incorporated. COPYRIGHT: (C)2009,JPO&INPIT
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