{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "slotted-crank-arm-30",
 "name": "Slotted crank arm, Ø5 hub, 3 mm slot from 6 to 19 mm",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What is a slotted crank arm?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "slotted crank",
  "slotted arm",
  "manivela ranurada",
  "Schlitzkurbel"
 ],
 "overall_mm": {
  "length": 37,
  "width": 14,
  "height": 5
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/slotted-crank-arm-30/",
 "sheet_txt": "https://xemstudio.com/objects/slotted-crank-arm-30/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 37,
   "width": 14,
   "height": 5
  },
  "notes": [
   "Arm on a Ø14 hub (Ø5 bore) with a 3 mm wide slot whose centre line runs from 6 to 19 mm out: a Ø3 pin from another crank slides in it and drives it round.",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "hub",
     "Ø14, Ø5 bore"
    ],
    [
     "slot",
     "3 × 13 mm (centres 6–19 mm)"
    ],
    [
     "thickness",
     "5 mm"
    ]
   ]
  }
 },
 "sheet_text": "Slotted crank arm, Ø5 hub, 3 mm slot from 6 to 19 mm — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/slotted-crank-arm-30/  (CC BY 4.0)\nBasis: Xem Studio design following Brown's figure (1868); true size, no printing allowance\nCatalog version: 2026-10-20\n\nOverall (mm): length 37.0, width 14.0, height 5.0\n- Arm on a Ø14 hub (Ø5 bore) with a 3 mm wide slot whose centre line runs from 6 to 19 mm out: a Ø3 pin from another crank slides in it and drives it round.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\nhub  Ø14, Ø5 bore\nslot  3 × 13 mm (centres 6–19 mm)\nthickness  5 mm\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala\n- 507movements.com: Brown's movement No. 220: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_220.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/offset-slotted-crank-mechanism/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/slotted-crank-arm-30/index.json\nAPI: https://xemstudio.com/api/geometry?object=slotted-crank-arm-30\n",
 "sources": [
  {
   "publisher": "Henry T. Brown (1868, public domain)",
   "title": "Five Hundred and Seven Mechanical Movements — scan on archive.org",
   "url": "https://archive.org/details/fivehundredseven00browiala",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "507movements.com",
   "title": "Brown's movement No. 220: figure, his text and an animation",
   "url": "https://507movements.com/mm_220.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Xem Studio",
   "title": "drawing",
   "url": "https://xemstudio.com/objects/offset-slotted-crank-mechanism/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "offset-slotted-crank-mechanism"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "What is a slotted crank arm?",
   "a": "Arm on a Ø14 hub (Ø5 bore) with a 3 mm wide slot whose centre line runs from 6 to 19 mm out: a Ø3 pin from another crank slides in it and drives it round."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "slotted-crank-arm-30",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/slotted-crank-arm-30/slotted-crank-arm-30.step",
   "stl": "https://xemstudio.com/files/hardware/slotted-crank-arm-30/slotted-crank-arm-30.stl",
   "note": "arm, z 0..5, slot on +X"
  }
 ],
 "markdown": "https://xemstudio.com/objects/slotted-crank-arm-30/index.md"
}