{
 "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": "romarin-stern-tube-175mm-m4-ro1442",
 "name": "Romarin stern tube 175 mm with M4 shaft × 223 mm (ro1442)",
 "kind": "modern",
 "category": "RC boats",
 "group": "Props and drive hardware",
 "year": null,
 "question": "What are the dimensions of the Romarin 175 mm stern tube with M4 shaft?",
 "tags": [
  "rc boat",
  "radio control boat",
  "model boat",
  "hobby rc",
  "props and drive hardware"
 ],
 "aliases": [
  "romarin stern tube 175mm",
  "ro1442",
  "m4 stern tube 4mm shaft",
  "rc boat stuffing tube 6mm",
  "m4 prop shaft",
  "4mm propeller shaft rc boat",
  "stevenrohr m4 175mm",
  "stevenrohr 4 mm welle",
  "tubo de bocina m4",
  "rc boot wellenanlage m4"
 ],
 "overall_mm": {
  "length": 6,
  "width": 6,
  "height": 223
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 2,
 "url": "https://xemstudio.com/objects/romarin-stern-tube-175mm-m4-ro1442/",
 "sheet_txt": "https://xemstudio.com/objects/romarin-stern-tube-175mm-m4-ro1442/sheet.txt",
 "sheet": {
  "basis": "Secondary source: Lindinger (Krick distributor) (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 6,
   "width": 6,
   "height": 223
  },
  "notes": [
   "A ready-made Romarin (Krick) stern tube for scale models: 175 mm tube, 6 mm diameter, carrying a 4 mm shaft 223 mm long with an M4 prop thread.",
   "Figures are from Lindinger (Krick distributor); whether 6 mm is the outside diameter is not stated, and the coupling-end thread is not published.",
   "True size, no printing tolerance added. Only published numbers are used; anything not published is said so.",
   "Secondary source: the numbers come from a retailer or magazine copy of the maker's specification."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "Stern tube length",
     "175 mm"
    ],
    [
     "Stern tube diameter",
     "6 mm"
    ],
    [
     "Shaft diameter",
     "4 mm"
    ],
    [
     "Shaft length",
     "223 mm"
    ],
    [
     "Propeller thread",
     "M4"
    ],
    [
     "Bearing",
     "plain bearing"
    ],
    [
     "Manufacturer no.",
     "ro1442"
    ]
   ]
  }
 },
 "sheet_text": "Romarin stern tube 175 mm with M4 shaft × 223 mm (ro1442) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/romarin-stern-tube-175mm-m4-ro1442/  (sheet CC BY 4.0)\nBasis: Secondary source: Lindinger (Krick distributor) (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 6, width 6, height 223\n- A ready-made Romarin (Krick) stern tube for scale models: 175 mm tube, 6 mm diameter, carrying a 4 mm shaft 223 mm long with an M4 prop thread.\n- Figures are from Lindinger (Krick distributor); whether 6 mm is the outside diameter is not stated, and the coupling-end thread is not published.\n- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.\n- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.\n\ndimension  value\nStern tube length  175 mm\nStern tube diameter  6 mm\nShaft diameter  4 mm\nShaft length  223 mm\nPropeller thread  M4\nBearing  plain bearing\nManufacturer no.  ro1442\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Lindinger (Krick distributor): ROMARIN Sterntube 175 shaft M4x223mm — web — Publisher's page; dimensions are facts — https://lindinger.at/en/CARS-BOATS/ACCESSORIES/Boat-Accessories/Drive-Shafts/ROMARIN-Sterntube-175-shaft-M4x223mm/9779948\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/romarin-stern-tube-175mm-m4-ro1442/index.json\nAPI: https://xemstudio.com/api/geometry?object=romarin-stern-tube-175mm-m4-ro1442\n",
 "sources": [
  {
   "publisher": "Lindinger (Krick distributor)",
   "title": "ROMARIN Sterntube 175 shaft M4x223mm",
   "url": "https://lindinger.at/en/CARS-BOATS/ACCESSORIES/Boat-Accessories/Drive-Shafts/ROMARIN-Sterntube-175-shaft-M4x223mm/9779948",
   "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": [
  "romarin-stern-tube-90mm-m4-ro1441",
  "romarin-stern-tube-235mm-m4-ro1444",
  "raboesch-shaft-m5-ball-bearing-290mm-rb301-08",
  "raboesch-154-2-blade-30mm-m4-prop-rb154-02a"
 ],
 "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 propeller fits this shaft?",
   "a": "Any prop with an M4 internal thread (4 mm shaft)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "romarin-stern-tube-175mm-m4-ro1442-tube-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/romarin-stern-tube-175mm-m4-ro1442/romarin-stern-tube-175mm-m4-ro1442-tube-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/romarin-stern-tube-175mm-m4-ro1442/romarin-stern-tube-175mm-m4-ro1442-tube-envelope.stl",
   "note": "Stern tube Ø6 × 175 mm outside envelope (bore not published)"
  },
  {
   "file": "romarin-stern-tube-175mm-m4-ro1442-shaft",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/romarin-stern-tube-175mm-m4-ro1442/romarin-stern-tube-175mm-m4-ro1442-shaft.step",
   "stl": "https://xemstudio.com/files/hardware/romarin-stern-tube-175mm-m4-ro1442/romarin-stern-tube-175mm-m4-ro1442-shaft.stl",
   "note": "Shaft Ø4 × 223 mm (prop thread not modelled; overhang split not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/romarin-stern-tube-175mm-m4-ro1442/index.md"
}