{
 "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": "flange-block-kfl08",
 "name": "Flange block KFL08 envelope with a 608 pocket",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Motion",
 "year": null,
 "question": "What are the dimensions of a KFL08 flange bearing?",
 "tags": [
  "flange bearing",
  "kfl08",
  "bearing housing",
  "608",
  "8 mm shaft",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "kfl08 dimensions",
  "kfl08 flange bearing",
  "2 bolt flange bearing 8mm",
  "kfl08 stl"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/flange-block-kfl08/",
 "sheet_txt": "https://xemstudio.com/objects/flange-block-kfl08/sheet.txt",
 "sheet": {
  "basis": "KFL08 two-bolt flange envelope: 55 × 25 flange, M5 holes 37 apart, Ø22 pocket at the 608 OD",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A two-bolt flange 55 long × 25 wide with round ends, 9 thick, with a Ø30 boss rising to 12 overall.",
   "A Ø22 pocket (608 OD) runs through the boss and flange on the centre.",
   "Two Ø5.5 holes (M5 clearance) 37 mm apart."
  ],
  "table": {
   "columns": [
    "feature",
    "value_mm"
   ],
   "rows": [
    [
     "flange",
     "55 × 25 × 9"
    ],
    [
     "boss",
     "Ø30 × 12"
    ],
    [
     "bearing pocket",
     "Ø22 through"
    ],
    [
     "mounting holes",
     "2 × Ø5.5 at 37"
    ]
   ]
  }
 },
 "sheet_text": "Flange block KFL08 envelope with a 608 pocket — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/flange-block-kfl08/  (CC BY 4.0)\nBasis: KFL08 two-bolt flange envelope: 55 × 25 flange, M5 holes 37 apart, Ø22 pocket at the 608 OD\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A two-bolt flange 55 long × 25 wide with round ends, 9 thick, with a Ø30 boss rising to 12 overall.\n- A Ø22 pocket (608 OD) runs through the boss and flange on the centre.\n- Two Ø5.5 holes (M5 clearance) 37 mm apart.\n\nfeature  value_mm\nflange  55 × 25 × 9\nboss  Ø30 × 12\nbearing pocket  Ø22 through\nmounting holes  2 × Ø5.5 at 37\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- McMaster-Carr: Mounted bearings (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/mounted-ball-bearings/\n- McMaster-Carr: Sleeve bearings (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/sleeve-bearings/\n- OpenBuilds: Solid V wheel kit — web, STEP — OpenBuilds site [verify license at link] — https://openbuildspartstore.com/solid-v-wheel-kit/\n- Wikipedia: Plain bearing — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Plain_bearing\n- Long Earth Society: Engine and rig builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/flange-block-kfl08/index.json\nAPI: https://xemstudio.com/api/geometry?object=flange-block-kfl08\n",
 "sources": [
  {
   "publisher": "McMaster-Carr",
   "title": "Mounted bearings (free STEP per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/mounted-ball-bearings/",
   "formats": [
    "STEP",
    "PDF"
   ],
   "license": "McMaster-Carr site terms",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Sleeve bearings (free STEP per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/products/sleeve-bearings/",
   "formats": [
    "STEP",
    "PDF"
   ],
   "license": "McMaster-Carr site terms",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "OpenBuilds",
   "title": "Solid V wheel kit",
   "url": "https://openbuildspartstore.com/solid-v-wheel-kit/",
   "formats": [
    "web",
    "STEP"
   ],
   "license": "OpenBuilds site",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Wikipedia",
   "title": "Plain bearing",
   "url": "https://en.wikipedia.org/wiki/Plain_bearing",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine and rig builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "pillow-block-kp08",
  "608-bearing",
  "metric-shafts",
  "shaft-collars"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "metric-shafts",
     "why": "Ø8 shaft through the 608"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "608-bearing",
     "why": "608 OD in the Ø22 pocket"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "pillow-block-kp08",
     "why": "same 608 pocket, sits on a base"
    }
   ]
  }
 ],
 "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": [
  {
   "feature": "bearing pocket",
   "exact": "Ø22",
   "mates": "608 bearing",
   "fit": "press",
   "files": "flange-block-"
  },
  {
   "feature": "mounting holes",
   "exact": "Ø5.5",
   "mates": "M5 screw clearance",
   "fit": "designed",
   "files": "flange-block-"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What is the KFL08 bolt spacing?",
   "a": "37 mm between the two M5 holes (Ø5.5 clearance) on a 55 × 25 flange."
  },
  {
   "q": "What bearing goes in the KFL08 file?",
   "a": "A 608 (8 × 22 × 7) in the Ø22 pocket."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "flange-block-kfl08",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/flange-block-kfl08.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/flange-block-kfl08.stl",
   "note": "KFL08-envelope two-bolt flange block: Ø22 pocket for a 608 bearing, two Ø5.5 (M5 clearance) holes 37 mm apart"
  }
 ],
 "markdown": "https://xemstudio.com/objects/flange-block-kfl08/index.md"
}