{
 "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": "cam-follower-bar-roller-pin",
 "name": "Follower bar 8 × 5 with Ø3 roller pin hole (75 mm)",
 "kind": "modern",
 "category": "Hardware",
 "group": "Mechanism parts",
 "year": null,
 "question": "What is the follower bar of a face cam?",
 "tags": [
  "mechanism part",
  "507 mechanical movements"
 ],
 "aliases": [
  "follower bar",
  "face cam follower",
  "barra seguidora",
  "Stößelstange"
 ],
 "overall_mm": {
  "length": 10,
  "width": 80,
  "height": 5
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/cam-follower-bar-roller-pin/",
 "sheet_txt": "https://xemstudio.com/objects/cam-follower-bar-roller-pin/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design following Brown's figure (1868); true size, no printing allowance",
  "overall_mm": {
   "length": 10,
   "width": 80,
   "height": 5
  },
  "notes": [
   "8 × 5 mm bar, 75 mm long, with a Ø10 round end and a Ø3 hole for the roller pin: rides over the face cam, the roller below it running in the groove; the bar slides in a guide above the cam.",
   "Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "bar",
     "8 × 5 × 75 mm"
    ],
    [
     "pin hole",
     "Ø3"
    ]
   ]
  }
 },
 "sheet_text": "Follower bar 8 × 5 with Ø3 roller pin hole (75 mm) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/cam-follower-bar-roller-pin/  (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 10.0, width 80.0, height 5.0\n- 8 × 5 mm bar, 75 mm long, with a Ø10 round end and a Ø3 hole for the roller pin: rides over the face cam, the roller below it running in the groove; the bar slides in a guide above the cam.\n- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).\n\ndimension  value\nbar  8 × 5 × 75 mm\npin hole  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. 97: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_097.html\n- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/grooved-heart-cam-mechanism/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/cam-follower-bar-roller-pin/index.json\nAPI: https://xemstudio.com/api/geometry?object=cam-follower-bar-roller-pin\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. 97: figure, his text and an animation",
   "url": "https://507movements.com/mm_097.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/grooved-heart-cam-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": [
  "grooved-heart-cam-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 the follower bar of a face cam?",
   "a": "8 × 5 mm bar, 75 mm long, with a Ø10 round end and a Ø3 hole for the roller pin: rides over the face cam, the roller below it running in the groove; the bar slides in a guide above the cam."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "cam-follower-bar-roller-pin",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/cam-follower-bar-roller-pin/cam-follower-bar-roller-pin.step",
   "stl": "https://xemstudio.com/files/hardware/cam-follower-bar-roller-pin/cam-follower-bar-roller-pin.stl",
   "note": "bar, pin at origin, along +Y"
  }
 ],
 "markdown": "https://xemstudio.com/objects/cam-follower-bar-roller-pin/index.md"
}