{
 "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": "corona-ds-939mg-servo",
 "name": "Corona DS-939MG digital metal-gear micro servo",
 "kind": "modern",
 "category": "RC planes",
 "group": "Micro servos",
 "year": null,
 "question": "What are the dimensions of the Corona DS-939MG digital metal-gear micro servo?",
 "tags": [
  "rc plane",
  "rc airplane",
  "radio control",
  "model aircraft",
  "micro servos"
 ],
 "aliases": [
  "ds-939mg dimensions",
  "corona ds939mg size",
  "ds939mg mm",
  "corona 939 servo",
  "ds-939mg spline",
  "ds-939mg torque",
  "ds939mg medidas",
  "ds939mg abmessungen"
 ],
 "overall_mm": {
  "length": 22.5,
  "width": 11.51,
  "height": 24.61
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/corona-ds-939mg-servo/",
 "sheet_txt": "https://xemstudio.com/objects/corona-ds-939mg-servo/sheet.txt",
 "sheet": {
  "basis": "Secondary source: ServoDatabase.com (copy of the maker's figures; the maker publishes none directly)",
  "overall_mm": {
   "length": 22.5,
   "width": 11.51,
   "height": 24.61
  },
  "notes": [
   "Servo Database listing in inches (secondary), converted to mm.",
   "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": [
    [
     "Length",
     "0.886 in (22.5 mm)"
    ],
    [
     "Width",
     "0.453 in (11.51 mm)"
    ],
    [
     "Height",
     "0.969 in (24.61 mm)"
    ],
    [
     "Weight",
     "0.44 oz"
    ],
    [
     "Torque",
     "34.73 oz-in at 4.8 V; 37.51 oz-in at 6.0 V"
    ],
    [
     "Speed",
     "0.14 s/60° at 4.8 V; 0.13 at 6.0 V"
    ],
    [
     "Gears",
     "metal"
    ],
    [
     "Spline",
     "21T"
    ],
    [
     "Bearing",
     "single"
    ]
   ]
  }
 },
 "sheet_text": "Corona DS-939MG digital metal-gear micro servo — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/corona-ds-939mg-servo/  (sheet CC BY 4.0)\nBasis: Secondary source: ServoDatabase.com (copy of the maker's figures; the maker publishes none directly)\nCatalog version: 2026-10-20\n\nOverall (mm): length 22.5, width 11.51, height 24.61\n- Servo Database listing in inches (secondary), converted to mm.\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\nLength  0.886 in (22.5 mm)\nWidth  0.453 in (11.51 mm)\nHeight  0.969 in (24.61 mm)\nWeight  0.44 oz\nTorque  34.73 oz-in at 4.8 V; 37.51 oz-in at 6.0 V\nSpeed  0.14 s/60° at 4.8 V; 0.13 at 6.0 V\nGears  metal\nSpline  21T\nBearing  single\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ServoDatabase.com: Corona DS-939MG — web — Publisher's page; dimensions are facts — https://servodatabase.com/servo/corona/ds-939mg\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/corona-ds-939mg-servo/index.json\nAPI: https://xemstudio.com/api/geometry?object=corona-ds-939mg-servo\n",
 "sources": [
  {
   "publisher": "ServoDatabase.com",
   "title": "Corona DS-939MG",
   "url": "https://servodatabase.com/servo/corona/ds-939mg",
   "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": [
  "rc-servos",
  "towerpro-sg90-micro-servo",
  "emax-es08ma-ii-servo",
  "emax-es9051-servo",
  "hitec-hs-55-servo",
  "hitec-hs-65hb-servo"
 ],
 "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 spline does the DS-939MG use?",
   "a": "21T."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "corona-ds-939mg-servo-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/corona-ds-939mg-servo/corona-ds-939mg-servo-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/corona-ds-939mg-servo/corona-ds-939mg-servo-envelope.stl",
   "note": "Envelope 22.5 × 11.51 × 24.61 mm (Servo case L × W × H exactly as the maker lists it; the listing does not say whether mounting tabs or the output shaft are included)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/corona-ds-939mg-servo/index.md"
}