{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "mangle-pinion-9t-for-pins-r40",
 "name": "Mangle-wheel pinion, 9 teeth, for Ø4 pins on R40 (cut for both sides of the pin row)",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What shape are the teeth of a mangle pinion?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "mangle pinion",
  "pin gear pinion",
  "piñón de mangle",
  "Mangelritzel"
 ],
 "overall_mm": {
  "length": 28.18,
  "width": 28.53,
  "height": 8
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/mangle-pinion-9t-for-pins-r40/",
 "sheet_txt": "https://xemstudio.com/objects/mangle-pinion-9t-for-pins-r40/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 28.18,
   "width": 28.53,
   "height": 8
  },
  "notes": [
   "8 mm pinion, pitch radius 12 mm (9 teeth to the wheel's 30 pin positions), Ø6 bore. Its tooth spaces are the envelope of the Ø4 pins as it rolls both outside the pin circle (centres 52 mm apart) and inside it (28 mm), so it clears the pins in either mesh.",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "teeth",
     "9"
    ],
    [
     "pitch radius",
     "12 mm"
    ],
    [
     "tip Ø",
     "28.6 mm"
    ],
    [
     "bore",
     "Ø6"
    ],
    [
     "thickness",
     "8 mm"
    ]
   ]
  }
 },
 "sheet_text": "Mangle-wheel pinion, 9 teeth, for Ø4 pins on R40 (cut for both sides of the pin row) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/mangle-pinion-9t-for-pins-r40/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Xem Studio design following Brown's figure (1868); true size, no printing allowance\nCatalog version: 2026-10-20\n\nOverall (mm): length 28.18, width 28.53, height 8.0\n- 8 mm pinion, pitch radius 12 mm (9 teeth to the wheel's 30 pin positions), Ø6 bore. Its tooth spaces are the envelope of the Ø4 pins as it rolls both outside the pin circle (centres 52 mm apart) and inside it (28 mm), so it clears the pins in either mesh.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\nteeth  9\npitch radius  12 mm\ntip Ø  28.6 mm\nbore  Ø6\nthickness  8 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. 36: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_036.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/mangle-wheel-and-pinion-mechanism/\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/mangle-pinion-9t-for-pins-r40/index.json\nAPI: https://xemstudio.com/api/geometry?object=mangle-pinion-9t-for-pins-r40\n",
 "sources": [
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   "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. 36: figure, his text and an animation",
   "url": "https://507movements.com/mm_036.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/mangle-wheel-and-pinion-mechanism/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
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 "xem": {
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  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "mangle-wheel-and-pinion-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 shape are the teeth of a mangle pinion?",
   "a": "8 mm pinion, pitch radius 12 mm (9 teeth to the wheel's 30 pin positions), Ø6 bore. Its tooth spaces are the envelope of the Ø4 pins as it rolls both outside the pin circle (centres 52 mm apart) and inside it (28 mm), so it clears the pins in either mesh."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "mangle-pinion-9t-for-pins-r40",
   "formats": [
    "step",
    "stl"
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   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/mangle-pinion-9t-for-pins-r40/mangle-pinion-9t-for-pins-r40.step",
   "stl": "https://xemstudio.com/files/hardware/mangle-pinion-9t-for-pins-r40/mangle-pinion-9t-for-pins-r40.stl",
   "note": "pinion, axis Z, z 0..8, a space centred on -X"
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 "markdown": "https://xemstudio.com/objects/mangle-pinion-9t-for-pins-r40/index.md"
}