{
 "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": "roller-follower-fork-rod-8",
 "name": "Roller-follower fork rod, 8 × 6 mm, for a Ø10 roller on a Ø3 pin",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What is a roller follower rod?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "roller follower rod",
  "cam follower fork",
  "vástago con rodillo",
  "Rollenstößel"
 ],
 "overall_mm": {
  "length": 14,
  "width": 75,
  "height": 10
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/roller-follower-fork-rod-8/",
 "sheet_txt": "https://xemstudio.com/objects/roller-follower-fork-rod-8/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 14,
   "width": 75,
   "height": 10
  },
  "notes": [
   "8 × 10 mm rod ending in a clevis: two 2 mm cheeks, 6 mm apart (the cam's thickness), pass above and below the cam and carry a Ø3 pin on which the Ø10 × 4 roller turns in the cam's plane.",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "rod",
     "8 × 10 mm, 60 long"
    ],
    [
     "cheeks",
     "2 mm, 6 mm apart"
    ],
    [
     "roller",
     "Ø10 × 4 (roller-follower-10)"
    ],
    [
     "pin",
     "Ø3"
    ]
   ]
  }
 },
 "sheet_text": "Roller-follower fork rod, 8 × 6 mm, for a Ø10 roller on a Ø3 pin — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/roller-follower-fork-rod-8/  (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 14.0, width 75.0, height 10.0\n- 8 × 10 mm rod ending in a clevis: two 2 mm cheeks, 6 mm apart (the cam's thickness), pass above and below the cam and carry a Ø3 pin on which the Ø10 × 4 roller turns in the cam's plane.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\nrod  8 × 10 mm, 60 long\ncheeks  2 mm, 6 mm apart\nroller  Ø10 × 4 (roller-follower-10)\npin  Ø3\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. 138: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_138.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/plate-cam-roller-follower-mechanism/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/roller-follower-fork-rod-8/index.json\nAPI: https://xemstudio.com/api/geometry?object=roller-follower-fork-rod-8\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. 138: figure, his text and an animation",
   "url": "https://507movements.com/mm_138.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/plate-cam-roller-follower-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": [
  "plate-cam-roller-follower-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 roller follower rod?",
   "a": "8 × 10 mm rod ending in a clevis: two 2 mm cheeks, 6 mm apart (the cam's thickness), pass above and below the cam and carry a Ø3 pin on which the Ø10 × 4 roller turns in the cam's plane."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "roller-follower-fork-rod-8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/roller-follower-fork-rod-8/roller-follower-fork-rod-8.step",
   "stl": "https://xemstudio.com/files/hardware/roller-follower-fork-rod-8/roller-follower-fork-rod-8.stl",
   "note": "fork rod, roller centre at y = 0"
  }
 ],
 "markdown": "https://xemstudio.com/objects/roller-follower-fork-rod-8/index.md"
}