{
  "category": "Shaft Couplings",
  "vertical": "power-transmission-and-bearings",
  "source": "https://getclaro.ai/resources/attribute-library/power-transmission-and-bearings/shaft-couplings/",
  "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": "coupling_type",
      "label": "Coupling Type",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Jaw (elastomeric insert)"
    },
    {
      "key": "coupling_size_series_designation",
      "label": "Coupling Size / Series",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Size 095"
    },
    {
      "key": "bore_dia_1",
      "label": "Bore Diameter, Hub 1",
      "group": "fit",
      "priority": "core",
      "value_type": "number",
      "unit": "in",
      "example_format": "0.625 in"
    },
    {
      "key": "bore_dia_2",
      "label": "Bore Diameter, Hub 2",
      "group": "fit",
      "priority": "core",
      "value_type": "number",
      "unit": "in",
      "example_format": "0.875 in"
    },
    {
      "key": "bore_type",
      "label": "Bore Type",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Finished bore with keyway and setscrew"
    },
    {
      "key": "keyway_size",
      "label": "Keyway Size",
      "group": "fit",
      "priority": "core",
      "value_type": "text",
      "unit": "in",
      "example_format": "3/16 x 3/32 in"
    },
    {
      "key": "nominal_rated_torque",
      "label": "Nominal (Rated) Torque",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "in-lb",
      "example_format": "194 in-lb"
    },
    {
      "key": "max_speed",
      "label": "Maximum Speed",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "rpm",
      "example_format": "9,000 rpm"
    },
    {
      "key": "manufacturer_part_number_mpn",
      "label": "Manufacturer Part Number (MPN)",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "JC-095-0625"
    },
    {
      "key": "sold_as_components_included",
      "label": "Sold As / Components Included",
      "group": "identity",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Single hub, insert sold separately"
    },
    {
      "key": "insert_element_material",
      "label": "Insert / Element Material",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "NBR (Buna-N)"
    },
    {
      "key": "hub_material",
      "label": "Hub Material",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Sintered iron"
    },
    {
      "key": "max_parallel_offset_misalignment",
      "label": "Max Parallel Misalignment",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "in",
      "example_format": "0.015 in"
    },
    {
      "key": "max_angular_misalignment",
      "label": "Max Angular Misalignment",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "°",
      "example_format": "1°"
    },
    {
      "key": "bore_keyway_standard",
      "label": "Bore & Keyway Standard",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "ANSI/AGMA 9002 (inch bores)"
    },
    {
      "key": "atex_marking",
      "label": "ATEX Marking",
      "group": "evidence",
      "priority": "channel",
      "value_type": "text",
      "unit": null,
      "example_format": "II 2G Ex h IIB T4 Gb"
    },
    {
      "key": "gtin_upc",
      "label": "GTIN / UPC",
      "group": "identity",
      "priority": "channel",
      "value_type": "identifier",
      "unit": null,
      "example_format": "081234509507"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "United States"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Coupling Type",
      "variants": [
        "Jaw",
        "Jaw Type",
        "Jaw/Spider",
        "Spider Coupling",
        "Jaw coupling w/ spider",
        "Elastomeric jaw"
      ],
      "normalized": "Jaw (elastomeric insert)"
    },
    {
      "attribute": "Bore Diameter",
      "variants": [
        "5/8",
        ".625",
        "0.625 in",
        "5/8 in",
        "15.88mm",
        "5/8\" bore"
      ],
      "normalized": "0.625 in"
    },
    {
      "attribute": "Insert / Element Material",
      "variants": [
        "NBR",
        "Buna-N",
        "Buna N",
        "Nitrile",
        "Nitrile rubber",
        "NBR spider"
      ],
      "normalized": "NBR (Buna-N)"
    }
  ]
}