{
  "$type": "site.standard.document",
  "description": "In a wheel rolling bearing device, where a pitch diameter of the inner-row ball (50) set is D1 and a pitch diameter of the outer-row ball set (51) is D2, D1 and D2 are set so as to satisfy the relationship \"D1 < D2\". Where an angle of a raceway circular arc from an intersection point (P1) of each…",
  "path": "/patents/999952",
  "publishedAt": "2012-07-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B27/0005",
    "JTEKT CORP [JP]"
  ],
  "textContent": "In a wheel rolling bearing device, where a pitch diameter of the inner-row ball (50) set is D1 and a pitch diameter of the outer-row ball set (51) is D2, D1 and D2 are set so as to satisfy the relationship \"D1 < D2\". Where an angle of a raceway circular arc from an intersection point (P1) of each inner-row ball (50) with the inner-side outer ring raceway surface (40) at a contact angle to a boundary portion of an inner-side raceway shoulder (41) is ¸1 and an angle of a raceway circular arc from an intersection point (P2) of each outer-row ball (51) with the outer-side outer ring raceway surface (45) at a contact angle to a boundary portion of an outer-side raceway shoulder (46) is ¸2, ¸1 and ¸2 are set so as to satisfy the relationship \"¸1 < ¸2\".",
  "title": "Wheel rolling bearing device"
}