{
  "$type": "site.standard.document",
  "description": "With regard to the rolling bearing unit for supporting a vehicle wheel, the traveling performance represented by acceleration performance and fuel consumption performance is improved by reducing the rotational torque of a hub rotating together with a wheel. An opening at an inside end of a space…",
  "path": "/patents/1081513",
  "publishedAt": "2004-12-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B27/02",
    "NSK LTD [JP]"
  ],
  "textContent": "With regard to the rolling bearing unit for supporting a vehicle wheel, the traveling performance represented by acceleration performance and fuel consumption performance is improved by reducing the rotational torque of a hub rotating together with a wheel. An opening at an inside end of a space where balls 14 are placed is closed by a cap 17a, and another opening at an outside end thereof is sealed by a seal ring 16c having three seal lips. The rotational resistance of the seal ring 16c is limited within a range of 0.03 to 0.2 N.m resulting from the friction between the respective seal lips and the counterpart surfaces.",
  "title": "ROLLING BEARING UNIT FOR SUPPORTING WHEEL"
}