{
 "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": "flat-face-follower-40",
 "name": "Flat-faced cam follower, 40 mm face, 8 mm stem",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What is a flat-faced follower?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "flat faced follower",
  "flat follower",
  "seguidor de cara plana",
  "Flachstößel"
 ],
 "overall_mm": {
  "length": 40,
  "width": 60,
  "height": 6
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/flat-face-follower-40/",
 "sheet_txt": "https://xemstudio.com/objects/flat-face-follower-40/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 40,
   "width": 60,
   "height": 6
  },
  "notes": [
   "Follower with a 40 × 4 mm flat face square to its 8 × 6 mm stem (60 long): contact moves across the face by ds/dθ, so the face must be wider than twice the largest ds/dθ (here 2 × 11.5 mm).",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "face",
     "40 × 4 mm"
    ],
    [
     "stem",
     "8 × 6 mm"
    ],
    [
     "length",
     "60 mm"
    ]
   ]
  }
 },
 "sheet_text": "Flat-faced cam follower, 40 mm face, 8 mm stem — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/flat-face-follower-40/  (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 40.0, width 60.0, height 6.0\n- Follower with a 40 × 4 mm flat face square to its 8 × 6 mm stem (60 long): contact moves across the face by ds/dθ, so the face must be wider than twice the largest ds/dθ (here 2 × 11.5 mm).\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\nface  40 × 4 mm\nstem  8 × 6 mm\nlength  60 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. 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-flat-follower-mechanism/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/flat-face-follower-40/index.json\nAPI: https://xemstudio.com/api/geometry?object=flat-face-follower-40\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-flat-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-flat-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 flat-faced follower?",
   "a": "Follower with a 40 × 4 mm flat face square to its 8 × 6 mm stem (60 long): contact moves across the face by ds/dθ, so the face must be wider than twice the largest ds/dθ (here 2 × 11.5 mm)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "flat-face-follower-40",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/flat-face-follower-40/flat-face-follower-40.step",
   "stl": "https://xemstudio.com/files/hardware/flat-face-follower-40/flat-face-follower-40.stl",
   "note": "follower, face at y = 0"
  }
 ],
 "markdown": "https://xemstudio.com/objects/flat-face-follower-40/index.md"
}