{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "pololu-wheel-90x10mm",
 "name": "Pololu Wheel 90×10 mm (item 1435): tire, rim, 3 mm D-bore and hub mounting holes",
 "kind": "modern",
 "category": "Hardware",
 "group": "Bearings, rails & motion",
 "year": null,
 "question": "What are the Pololu Wheel 90×10 mm dimensions, bore and hub mounting-hole positions?",
 "tags": [
  "pololu wheel",
  "robot wheel",
  "rover wheel",
  "90 mm wheel",
  "3 mm d-shaft wheel",
  "micro metal gearmotor wheel"
 ],
 "aliases": [
  "Pololu Wheel 90x10mm",
  "Pololu 1435",
  "Pololu 1436",
  "Pololu 1439",
  "pololu wheel 90x10mm pair black",
  "rover wheel",
  "pololu micro metal gearmotor wheel",
  "pololu 90mm wheel"
 ],
 "overall_mm": {
  "length": 90,
  "width": 90,
  "height": 11.75
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/pololu-wheel-90x10mm/",
 "sheet_txt": "https://xemstudio.com/objects/pololu-wheel-90x10mm/sheet.txt",
 "sheet": {
  "basis": "Pololu's own STEP model of the 90×10 mm wheel, checked against the Pololu wheel dimension diagram.",
  "overall_mm": {
   "length": 90,
   "width": 90,
   "height": 11.75
  },
  "notes": [
   "Datum: wheel axis on Z, rear hub boss on z=0, centre of the D-bore at x=0, y=0; same geometry for every colour (items 1435–1439).",
   "Tire Ø90.0 × 7.3 wide on a rim Ø80.0 × 10.0 wide; the rear boss Ø6.6 protrudes 1.75 below the rim.",
   "Hub bore: 3.0 mm D-bore with the flat 1.0 mm from the axis, through the full hub.",
   "Six Ø3.1 mounting holes through the hub (5.0 deep) on a Ø19.05 bolt circle: (0, ±6.35) and (±8.25, ±4.76).",
   "Modelled: tire, rim, inner flange, six spokes, hub disc Ø32.0 and boss Ø16.0. Not modelled: tread detail, the R2.5 rounds in the spoke openings and small hub fillets.",
   "All dimensions are exact nominal mm."
  ],
  "table": {
   "columns": [
    "hole",
    "x (mm)",
    "y (mm)",
    "diameter (mm)"
   ],
   "rows": [
    [
     "1",
     0,
     6.35,
     3.1
    ],
    [
     "2",
     0,
     -6.35,
     3.1
    ],
    [
     "3",
     8.25,
     4.76,
     3.1
    ],
    [
     "4",
     8.25,
     -4.76,
     3.1
    ],
    [
     "5",
     -8.25,
     4.76,
     3.1
    ],
    [
     "6",
     -8.25,
     -4.76,
     3.1
    ]
   ]
  }
 },
 "sheet_text": "Pololu Wheel 90×10 mm (item 1435): tire, rim, 3 mm D-bore and hub mounting holes — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/pololu-wheel-90x10mm/  (sheet CC BY 4.0)\nBasis: Pololu's own STEP model of the 90×10 mm wheel, checked against the Pololu wheel dimension diagram.\nCatalog version: 2026-10-20\n\nOverall (mm): length 90.0, width 90.0, height 11.75\n- Datum: wheel axis on Z, rear hub boss on z=0, centre of the D-bore at x=0, y=0; same geometry for every colour (items 1435–1439).\n- Tire Ø90.0 × 7.3 wide on a rim Ø80.0 × 10.0 wide; the rear boss Ø6.6 protrudes 1.75 below the rim.\n- Hub bore: 3.0 mm D-bore with the flat 1.0 mm from the axis, through the full hub.\n- Six Ø3.1 mounting holes through the hub (5.0 deep) on a Ø19.05 bolt circle: (0, ±6.35) and (±8.25, ±4.76).\n- Modelled: tire, rim, inner flange, six spokes, hub disc Ø32.0 and boss Ø16.0. Not modelled: tread detail, the R2.5 rounds in the spoke openings and small hub fillets.\n- All dimensions are exact nominal mm.\n\nhole  x (mm)  y (mm)  diameter (mm)\n1  0  6.35  3.1\n2  0  -6.35  3.1\n3  8.25  4.76  3.1\n4  8.25  -4.76  3.1\n5  -8.25  4.76  3.1\n6  -8.25  -4.76  3.1\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Pololu: Pololu Wheel 90×10mm 3D model (STEP) — web — Publisher's page; dimensions are facts — https://www.pololu.com/file/0J1295/pololu-wheel-90%C3%9710mm.zip\n- Pololu: Pololu wheel dimensions diagram (PDF) — web — Publisher's page; dimensions are facts — https://www.pololu.com/file/0J1708/pololu-wheel-dimensions.pdf\n- Pololu: Pololu Wheel 90×10mm Pair – Black (item 1435) — web — Publisher's page; dimensions are facts — https://www.pololu.com/product/1435\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/pololu-wheel-90x10mm/index.json\nAPI: https://xemstudio.com/api/geometry?object=pololu-wheel-90x10mm\n",
 "sources": [
  {
   "publisher": "Pololu",
   "title": "Pololu Wheel 90×10mm 3D model (STEP)",
   "url": "https://www.pololu.com/file/0J1295/pololu-wheel-90%C3%9710mm.zip",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Pololu",
   "title": "Pololu wheel dimensions diagram (PDF)",
   "url": "https://www.pololu.com/file/0J1708/pololu-wheel-dimensions.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Pololu",
   "title": "Pololu Wheel 90×10mm Pair – Black (item 1435)",
   "url": "https://www.pololu.com/product/1435",
   "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": [
  "775-dc-motor",
  "jga25-370-gearmotor",
  "metric-shafts",
  "socket-head-cap-screws-metric",
  "hex-nuts-metric"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. 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. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [
  {
   "feature": "D-shaft bore",
   "exact": "Ø3.0 D, flat 1.0 from axis",
   "mates": "3 mm D-shaft of a Pololu micro metal gearmotor",
   "fit": "press",
   "files": "all"
  },
  {
   "feature": "Hub mounting holes",
   "exact": "6 × Ø3.1 on Ø19.05 bolt circle",
   "mates": "M3 screws into a hub adapter or bracket",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "Tire",
   "exact": "Ø90.0 × 7.3 wide",
   "mates": "wheel well / ground clearance of the chassis",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "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. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "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 shaft does the Pololu 90×10 mm wheel fit?",
   "a": "A 3 mm D-shaft: the bore is Ø3.0 with the flat 1.0 mm from the axis, as on Pololu micro metal gearmotors."
  },
  {
   "q": "Where are the hub mounting holes?",
   "a": "Six Ø3.1 holes on a Ø19.05 bolt circle at (0, ±6.35) and (±8.25, ±4.76) from the bore centre."
  },
  {
   "q": "How wide is the wheel?",
   "a": "The tire is Ø90.0 × 7.3 mm; the rim is 10.0 mm wide and the overall hub-to-rim width is 11.75 mm."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "pololu-wheel-90x10mm",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/pololu-wheel-90x10mm/pololu-wheel-90x10mm.step",
   "stl": "https://xemstudio.com/files/hardware/pololu-wheel-90x10mm/pololu-wheel-90x10mm.stl",
   "note": "Pololu Wheel 90×10 mm (item 1435): tire, rim, 3 mm D-bore and hub mounting holes"
  }
 ],
 "markdown": "https://xemstudio.com/objects/pololu-wheel-90x10mm/index.md"
}