| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear transmission superior in performance in supplying a lubricant to the inside of a cylindrical roller bearing.SOLUTION: A gear transmission 100 includes an internal gear 24, an external gear 20, a shaft 6 and rings 14a and 16. The external gear 20 eccentrically rotates while meshing with the internal gear 24. The shaft 6 has an eccentric body 8. The eccentric body 8 engages with a through-hole formed in the external gear 20. The shaft 6 eccentrically rotates the external gear 20. The rings 14a and 16 are coaxially attached to the shaft 6, and are adjacent to the eccentric body 8. On an outer circumferential surface of the shaft 6, grooves 30 are formed toward both ends in the axial direction of the shaft 6 by passing through the inside of the rings 14a and 16 from the eccentric body 8. |
