Patent ID: 9556825
Date: 2017-01-31
CPC Classifications: F02M,F16K

Claim:
1. A valve device comprising: a valve that opens and closes a passage; and a cantilever bearing member that rotatably supports a rotating shaft of the valve on only one side of the passage, wherein the cantilever bearing member has a plurality of rolling-element bearings that are arranged in series in an axial direction of the rotating shaft to be directly adjacent to each other, one of the plurality of rolling-element bearings is located the closest to the passage among the plurality of rolling-element bearings, and the rolling-element bearing that is located closest to the passage has a rolling element, an inner race and an outer race between which a space is defined to receive the rolling element, and a seal portion made of rubber and steel, such that the seal portion is configured to tightly seal the space on a side adjacent to the passage, wherein the rubber contacts both the inner race and the outer race.