{
  "category": "Linear Bearings",
  "vertical": "power-transmission-and-bearings",
  "source": "https://getclaro.ai/resources/attribute-library/power-transmission-and-bearings/linear-bearings/",
  "status": "editorial-draft",
  "note": "Editorial reference template. Example values show format only and do not describe a real SKU. Not an official ETIM or ECLASS class.",
  "groups": [
    {
      "key": "identity",
      "name": "Identity",
      "check": "Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking."
    },
    {
      "key": "technical",
      "name": "Technical specifications",
      "check": "Store the number and unit separately. Convert only when the source unit and test conditions are known."
    },
    {
      "key": "selection",
      "name": "Selection attributes",
      "check": "Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to."
    },
    {
      "key": "fit",
      "name": "Fit & compatibility",
      "check": "Keep model and series qualifiers. A similar-looking part is not a verified fit until a source says so."
    },
    {
      "key": "evidence",
      "name": "Evidence & compliance",
      "check": "Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU."
    }
  ],
  "fields": [
    {
      "key": "bearing_type",
      "label": "Bearing Type",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Recirculating linear ball bushing"
    },
    {
      "key": "nominal_shaft_diameter_bore_d",
      "label": "Nominal Shaft Diameter (d)",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "25 mm"
    },
    {
      "key": "outside_diameter_d",
      "label": "Outside Diameter (D)",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "40 mm"
    },
    {
      "key": "overall_length_l",
      "label": "Overall Length (L)",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "mm",
      "example_format": "58 mm"
    },
    {
      "key": "dimension_series_interchange_standard",
      "label": "Dimension Series",
      "group": "fit",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "LME (European metric series)"
    },
    {
      "key": "body_configuration",
      "label": "Body Configuration",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Closed"
    },
    {
      "key": "mounting_style",
      "label": "Mounting Style",
      "group": "fit",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Cylindrical, retaining ring grooves"
    },
    {
      "key": "seal_wiper_configuration",
      "label": "Seal / Wiper Configuration",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Sealed both ends"
    },
    {
      "key": "manufacturer_part_number",
      "label": "Manufacturer Part Number",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "LB-LME25-2S"
    },
    {
      "key": "basic_dynamic_load_rating_c",
      "label": "Basic Dynamic Load Rating (C)",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "N",
      "example_format": "1,560 N"
    },
    {
      "key": "basic_static_load_rating_c0",
      "label": "Basic Static Load Rating (C0)",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "N",
      "example_format": "2,740 N"
    },
    {
      "key": "rated_travel_life_basis",
      "label": "Rated Travel Life Basis",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "100 km"
    },
    {
      "key": "self_aligning",
      "label": "Self-Aligning",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Yes"
    },
    {
      "key": "sleeve_ball_material",
      "label": "Sleeve & Ball Material",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Bearing steel sleeve, steel balls"
    },
    {
      "key": "recommended_shaft_tolerance_hardness",
      "label": "Recommended Shaft Tolerance & Hardness",
      "group": "fit",
      "priority": "differentiating",
      "value_type": "text",
      "unit": null,
      "example_format": "h6, 60 HRC minimum"
    },
    {
      "key": "gtin_13_upc_a",
      "label": "GTIN",
      "group": "identity",
      "priority": "channel",
      "value_type": "identifier",
      "unit": null,
      "example_format": "4812345025015"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "TW"
    },
    {
      "key": "rohs_status",
      "label": "RoHS Status",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Compliant (per supplier declaration)"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Dimension Series",
      "variants": [
        "LME",
        "LME series",
        "Euro series",
        "European metric",
        "LME-UU",
        "Metric (Euro)"
      ],
      "normalized": "LME (European metric series)"
    },
    {
      "attribute": "Basic Dynamic Load Rating (C)",
      "variants": [
        "640 N",
        "0.64 kN",
        "65 kgf",
        "144 lbf",
        "65.2 kp",
        "640"
      ],
      "normalized": "640 N"
    },
    {
      "attribute": "Seal / Wiper Configuration",
      "variants": [
        "UU",
        "2S",
        "-DD",
        "Double side seals",
        "Seals both ends",
        "Sealed 2 sides"
      ],
      "normalized": "Sealed both ends"
    }
  ]
}