{
 "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": "bearing-housings-and-rod-supports",
 "name": "Bearing housings and linear supports: KP08, KFL08, SK8, SC8UU, V-wheels, sleeve bushings",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Motion",
 "year": null,
 "question": "What are KP08 pillow block and SK8 rod support dimensions?",
 "tags": [
  "pillow block",
  "bearing housing",
  "rod support",
  "bushing",
  "v wheel",
  "linear",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "kp08 dimensions",
  "kfl08 dimensions",
  "sk8 rod support dimensions",
  "sc8uu dimensions",
  "openbuilds v wheel dimensions",
  "bronze bushing sizes",
  "pillow block 8mm"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 13,
 "url": "https://xemstudio.com/objects/bearing-housings-and-rod-supports/",
 "sheet_txt": "https://xemstudio.com/objects/bearing-housings-and-rod-supports/sheet.txt",
 "sheet": {
  "basis": "Catalogue dimensions for the common 8 mm printer/CNC parts (KP08, KFL08, SK8, SC8UU), OpenBuilds V-wheel (23.89 × 10.23), and standard sleeve-bushing sizes; printed versions take a bare 608/625/LM8UU",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "KP08: Ø8 self-aligning insert bearing in a cast housing; 15 mm centre height, base 55 × 13, two Ø5 holes 42 mm apart. KFL08: 2-bolt flange, Ø8, holes 37 mm apart, 25 mm wide. Both also exist in KP000/KFL000 (10 mm) and KP001 (12 mm).",
   "SK8: Ø8 rod clamp, 20 mm centre height, base 42 × 14 with two Ø5.5 holes 32 mm apart, M4 pinch screw. SHF8 is the flanged version. SC8UU: an LM8UU in an aluminium block, 34 × 30 × 22, four M4 on 24 × 18, 11 mm from base to rod centre. SC8LUU holds an LM8LUU at 58 long.",
   "V-wheel (OpenBuilds): Ø23.89 OD, 10.23 wide, 90° groove, two 625 bearings with a 1 mm spacer; runs in V-slot (6.2 mm) extrusion. Eccentric spacers of Ø7.1 adjust preload.",
   "Sleeve bushings: Ø3×5, 4×6, 5×8, 6×10, 8×12, 10×14 (ID × OD) in bronze (oiled), graphite-bronze (dry), PTFE-lined. Press into a printed hole at OD − 0.1; shaft runs at ID + 0.02. Printed PETG bushings run fine at low speed: hole = shaft + 0.2.",
   "LES: KP08 blocks under the flywheel shaft on the big engines; SK8 + 8 mm rod as a displacer guide; bushings in every printed link."
  ],
  "table": {
   "columns": [
    "part",
    "bore_mm",
    "centre_height_mm",
    "footprint_mm",
    "holes"
   ],
   "rows": [
    [
     "KP08",
     8,
     15,
     "55 × 13",
     "2 × Ø5 @ 42"
    ],
    [
     "KFL08",
     8,
     "flange",
     "55 × 25",
     "2 × Ø5 @ 37"
    ],
    [
     "SK8",
     8,
     20,
     "42 × 14",
     "2 × Ø5.5 @ 32"
    ],
    [
     "SC8UU",
     8,
     11,
     "34 × 30 × 22",
     "4 × M4 @ 24 × 18"
    ],
    [
     "V-wheel",
     "2 × 625",
     "Ø23.89 × 10.23",
     "—",
     "M5 axle"
    ],
    [
     "bushings",
     "3–10",
     "—",
     "OD 5–14",
     "press fit OD − 0.1"
    ]
   ]
  }
 },
 "sheet_text": "Bearing housings and linear supports: KP08, KFL08, SK8, SC8UU, V-wheels, sleeve bushings — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/bearing-housings-and-rod-supports/  (CC BY 4.0)\nBasis: Catalogue dimensions for the common 8 mm printer/CNC parts (KP08, KFL08, SK8, SC8UU), OpenBuilds V-wheel (23.89 × 10.23), and standard sleeve-bushing sizes; printed versions take a bare 608/625/LM8UU\nCatalog version: 2026-10-20\n\nSizes: see table below\n- KP08: Ø8 self-aligning insert bearing in a cast housing; 15 mm centre height, base 55 × 13, two Ø5 holes 42 mm apart. KFL08: 2-bolt flange, Ø8, holes 37 mm apart, 25 mm wide. Both also exist in KP000/KFL000 (10 mm) and KP001 (12 mm).\n- SK8: Ø8 rod clamp, 20 mm centre height, base 42 × 14 with two Ø5.5 holes 32 mm apart, M4 pinch screw. SHF8 is the flanged version. SC8UU: an LM8UU in an aluminium block, 34 × 30 × 22, four M4 on 24 × 18, 11 mm from base to rod centre. SC8LUU holds an LM8LUU at 58 long.\n- V-wheel (OpenBuilds): Ø23.89 OD, 10.23 wide, 90° groove, two 625 bearings with a 1 mm spacer; runs in V-slot (6.2 mm) extrusion. Eccentric spacers of Ø7.1 adjust preload.\n- Sleeve bushings: Ø3×5, 4×6, 5×8, 6×10, 8×12, 10×14 (ID × OD) in bronze (oiled), graphite-bronze (dry), PTFE-lined. Press into a printed hole at OD − 0.1; shaft runs at ID + 0.02. Printed PETG bushings run fine at low speed: hole = shaft + 0.2.\n- LES: KP08 blocks under the flywheel shaft on the big engines; SK8 + 8 mm rod as a displacer guide; bushings in every printed link.\n\npart  bore_mm  centre_height_mm  footprint_mm  holes\nKP08  8  15  55 × 13  2 × Ø5 @ 42\nKFL08  8  flange  55 × 25  2 × Ø5 @ 37\nSK8  8  20  42 × 14  2 × Ø5.5 @ 32\nSC8UU  8  11  34 × 30 × 22  4 × M4 @ 24 × 18\nV-wheel  2 × 625  Ø23.89 × 10.23  —  M5 axle\nbushings  3–10  —  OD 5–14  press fit OD − 0.1\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, 13 parts): https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/index.json\nAPI: https://xemstudio.com/api/geometry?object=bearing-housings-and-rod-supports\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": [
  "shaft-collars-clips-and-shafts",
  "ball-bearings-metric",
  "lm8uu-linear-bearing",
  "t-slot-extrusions",
  "mgn-linear-rails",
  "608-bearing"
 ],
 "faq": [
  {
   "q": "What are KP08 dimensions?",
   "a": "Ø8 bore, 15 mm centre height, 55 mm long × 13 mm wide base, two Ø5 mounting holes 42 mm apart, 29 mm overall height."
  },
  {
   "q": "What are SK8 rod support dimensions?",
   "a": "20 mm from base to rod centre, 42 × 14 base, holes 32 mm apart (M5), M4 clamp screw; 32 mm tall."
  },
  {
   "q": "What size is an OpenBuilds V-wheel?",
   "a": "23.89 mm OD, 10.23 mm wide, 90° V groove, two 625 (5 × 16 × 5) bearings with a 1 mm precision shim between."
  },
  {
   "q": "What bushing size for a 5 mm shaft?",
   "a": "Ø5 ID × Ø8 OD, 8 or 12 mm long, bronze or graphite; press into a Ø7.9 hole."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "pillow-block-kp08",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/pillow-block-kp08.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/pillow-block-kp08.stl",
   "note": "KP08 pillow block: Ø8 insert bearing, 15 mm centre height, 55 × 13 base, 42 mm hole centres (M5)"
  },
  {
   "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 two-bolt flange block: Ø8, 37 mm hole centres"
  },
  {
   "file": "rod-support-sk8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/rod-support-sk8.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/rod-support-sk8.stl",
   "note": "SK8 rod support: Ø8 clamp, 20 mm centre height, 32 mm base holes (M5), M4 clamp screw"
  },
  {
   "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: LM8UU pocket, 34 × 30 × 22, 24 × 18 mm M4 pattern, 11 mm centre height"
  },
  {
   "file": "vwheel-openbuilds-23-9",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/vwheel-openbuilds-23-9.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/vwheel-openbuilds-23-9.stl",
   "note": "OpenBuilds-style V-wheel: Ø23.89 × 10.23, 90° V groove, pocket for two 625 bearings"
  },
  {
   "file": "bushing-3x5x6",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-3x5x6.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-3x5x6.stl",
   "note": "sleeve bushing Ø3 ID × Ø5 OD × 6 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-4x6x8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-4x6x8.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-4x6x8.stl",
   "note": "sleeve bushing Ø4 ID × Ø6 OD × 8 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-5x8x8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-5x8x8.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-5x8x8.stl",
   "note": "sleeve bushing Ø5 ID × Ø8 OD × 8 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-5x8x12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-5x8x12.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-5x8x12.stl",
   "note": "sleeve bushing Ø5 ID × Ø8 OD × 12 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-6x10x10",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-6x10x10.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-6x10x10.stl",
   "note": "sleeve bushing Ø6 ID × Ø10 OD × 10 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-8x12x12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-8x12x12.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-8x12x12.stl",
   "note": "sleeve bushing Ø8 ID × Ø12 OD × 12 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-8x12x20",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-8x12x20.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-8x12x20.stl",
   "note": "sleeve bushing Ø8 ID × Ø12 OD × 20 (bronze/graphite/PTFE sizes)"
  },
  {
   "file": "bushing-10x14x15",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-10x14x15.step",
   "stl": "https://xemstudio.com/files/hardware/bearing-housings-and-rod-supports/bushing-10x14x15.stl",
   "note": "sleeve bushing Ø10 ID × Ø14 OD × 15 (bronze/graphite/PTFE sizes)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/bearing-housings-and-rod-supports/index.md"
}