To extend lifetime and improve reliability while lubrication is kept well.

A friction roller type step-up gear comprises a low-speed side shaft 3 provided with an outre ring 32 at its one end, a high-speed side shaft 17 which is eccentric from the outer ring 32 and rotatably supported by housings 1 and 2, and a guide roller 37a and a movable roller which are rotatably supported between the outer ring 32 and the high-speed side shaft 17. An external pump (not shown in figure) forcedly guides a traction oil through an oil feeding port 81. The traction oil is supplied to a support pin 39a, a radial needle bearing 42, and a guide roller 37 (37a) from a traction oil guide path 82 of the housing 2 through a traction oil guide path 83 of the support pin 39a.