{
 "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": "slide-block-sc8uu",
 "name": "SC8UU slide block for an LM8UU",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Motion",
 "year": null,
 "question": "What are the dimensions of an SC8UU linear bearing block?",
 "tags": [
  "slide block",
  "sc8uu",
  "linear bearing block",
  "lm8uu",
  "8 mm rod",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "sc8uu dimensions",
  "sc8uu stl",
  "linear bearing block 8mm",
  "sc8uu hole pattern"
 ],
 "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/slide-block-sc8uu/",
 "sheet_txt": "https://xemstudio.com/objects/slide-block-sc8uu/sheet.txt",
 "sheet": {
  "basis": "SC8UU catalogue envelope: 34 × 30 × 22, LM8UU at 11 mm, four M4 on 24 × 18",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A 34 × 30 × 22 block with R2 edges. A Ø15 bore (LM8UU OD) runs the 30 mm length on an axis 11 mm above the base.",
   "Four Ø3.3 holes (M4 tap drill) run top to bottom on a 24 × 18 pattern.",
   "The LM8UU sits in the Ø15 bore and rides an Ø8 rod; the fit is listed under Mating features."
  ],
  "table": {
   "columns": [
    "feature",
    "value_mm"
   ],
   "rows": [
    [
     "block",
     "34 × 30 × 22"
    ],
    [
     "bearing bore",
     "Ø15 × 30"
    ],
    [
     "centre height",
     11
    ],
    [
     "holes",
     "4 × Ø3.3 (M4 tap) on 24 × 18"
    ]
   ]
  }
 },
 "sheet_text": "SC8UU slide block for an LM8UU — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/slide-block-sc8uu/  (CC BY 4.0)\nBasis: SC8UU catalogue envelope: 34 × 30 × 22, LM8UU at 11 mm, four M4 on 24 × 18\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A 34 × 30 × 22 block with R2 edges. A Ø15 bore (LM8UU OD) runs the 30 mm length on an axis 11 mm above the base.\n- Four Ø3.3 holes (M4 tap drill) run top to bottom on a 24 × 18 pattern.\n- The LM8UU sits in the Ø15 bore and rides an Ø8 rod; the fit is listed under Mating features.\n\nfeature  value_mm\nblock  34 × 30 × 22\nbearing bore  Ø15 × 30\ncentre height  11\nholes  4 × Ø3.3 (M4 tap) on 24 × 18\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/slide-block-sc8uu/index.json\nAPI: https://xemstudio.com/api/geometry?object=slide-block-sc8uu\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": [
  "lm8uu-bearing",
  "linear-rod-8mm",
  "rod-support-sk8",
  "mgn-carriages"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "linear-rod-8mm",
     "why": "rides the Ø8 rod"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "lm8uu-bearing",
     "why": "LM8UU OD in the Ø15 bore"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "mgn-carriages",
     "why": "rail carriage instead of rod and bushing"
    }
   ]
  },
  {
   "role": "Also needed",
   "items": [
    {
     "slug": "rod-support-sk8",
     "why": "holds the rod ends"
    }
   ]
  }
 ],
 "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": "LM8UU pocket",
   "exact": "Ø15",
   "mates": "LM8UU OD",
   "fit": "press",
   "files": "slide-block-"
  },
  {
   "feature": "mounting holes",
   "exact": "Ø3.3",
   "mates": "M4 tap drill",
   "fit": "designed",
   "files": "slide-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 are SC8UU dimensions?",
   "a": "34 × 30 × 22, LM8UU (Ø15) bore 11 mm above the base, four M4 holes on 24 × 18."
  },
  {
   "q": "What bearing goes in an SC8UU?",
   "a": "One LM8UU (Ø8 × Ø15 × 24) in the Ø15 × 30 bore."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "slide-block-sc8uu",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/slide-block-sc8uu.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/slide-block-sc8uu.stl",
   "note": "SC8UU slide block: Ø15 LM8UU pocket, 34 × 30 × 22, four Ø3.3 (M4 tap drill) holes on 24 × 18, 11 mm centre height"
  }
 ],
 "markdown": "https://xemstudio.com/objects/slide-block-sc8uu/index.md"
}