{
  "$type": "site.standard.document",
  "description": "Provided is a preload inspection method for a wheel bearing device enabling more accurate checking of preload. The invention comprises: a press-fitting step S02 for press-fitting an inner ring 4 to a small-diameter stepped part 3a; a first bearing preload value calculation step S03 for calculating…",
  "path": "/patents/1414155",
  "publishedAt": "2023-11-08T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B27/0089",
    "NTN TOYO BEARING CO LTD [JP]"
  ],
  "textContent": "Provided is a preload inspection method for a wheel bearing device enabling more accurate checking of preload. The invention comprises: a press-fitting step S02 for press-fitting an inner ring 4 to a small-diameter stepped part 3a; a first bearing preload value calculation step S03 for calculating a first bearing preload value P1 on the basis of a first axial direction negative clearance G1; a first rotating torque measurement step S05 for measuring a first rotating torque Ta after the press-fitting step; a swaging step S06 for swaging the small-diameter stepped part to the inner ring after the first rotating torque measurement step; a second bearing preload value calculation step S07 for calculating a second bearing preload value P2 on the basis of a second axial direction negative clearance G2; a second rotating torque measurement step S08 for measuring a second rotating torque Tb after the swaging step; a third bearing preload value calculation step S09 for calculating a third bearing preload value P3 by adding, to the first bearing preload value, a preload change amount ΔP based on a differential torque ΔT between the first rotating torque and the second rotating torque; and a determination step S10 for determining the suitability of the preload from the second bearing preload value and the third bearing preload value.",
  "title": "PRELOAD INSPECTION METHOD AND ASSEMBLY METHOD FOR BEARING DEVICE FOR VEHICLE WHEEL"
}