{
 "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": "adafruit-motors-servos-drivers",
 "name": "Servos, DC and stepper motors, solenoid, motor drivers (Adafruit-sold parts)",
 "kind": "modern",
 "category": "Electronics",
 "group": "Motion",
 "year": null,
 "question": "What are the dimensions of the Adafruit micro servo and the 28BYJ-48 stepper?",
 "tags": [
  "servo",
  "motor",
  "stepper",
  "driver",
  "solenoid",
  "adafruit"
 ],
 "aliases": [
  "micro servo dimensions",
  "sg90 size",
  "28byj-48 dimensions",
  "mg90s dimensions",
  "a4988 dimensions",
  "servo driver pca9685 size",
  "tt motor adafruit"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": true,
 "xem_status": "free-files",
 "les": false,
 "free_files": 22,
 "url": "https://xemstudio.com/objects/adafruit-motors-servos-drivers/",
 "sheet_txt": "https://xemstudio.com/objects/adafruit-motors-servos-drivers/sheet.txt",
 "sheet": {
  "basis": "Adafruit CAD (MIT) models of the sold motors and driver boards",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Micro servo metal-gear (1143): 23 × 12.2 × 29 mm with tabs 32.5 mm apart (SG90/MG90S class). Sub-micro (2201): 20 × 8.5 × 23 mm. Standard-size servo body (2941 DC motor in servo body): 40.5 × 20 × 38 mm.",
   "28BYJ-48 5 V stepper (858): Ø28 mm body, 19 mm deep, tabs 35 mm apart with Ø4.2 holes, Ø5 mm D-shaft offset 8 mm from centre. NEMA-17 (324): 42.3 face, 34 mm long. TT motors (3777/3802): 70 × 22 × 18.5 mm. DC toy motor (711): Ø24 × 20 mm, 2 mm shaft.",
   "Driver boards: A4988 / TMC2209 (6109/6121) 15.5 × 20.5 mm StepStick; DRV8871 (3190) 22 × 25 mm; 16-ch servo driver (815) 62 × 25 mm; Motor FeatherWing 51 × 23 mm; large solenoid (413) 40 × 25 × 27 mm with a 10 mm stroke."
  ],
  "table": {
   "columns": [
    "product",
    "bbox_l_mm",
    "bbox_w_mm",
    "bbox_h_mm"
   ],
   "rows": [
    [
     "1143 Micro Servo - High Torque Metal Gear",
     31.3,
     30.7,
     12
    ],
    [
     "2201 Submicro servo",
     30.1,
     24.9,
     11.8
    ],
    [
     "2307 MicroServo MG923B",
     36.8,
     31.5,
     12
    ],
    [
     "2941 DC Motor in Servo Body",
     35.9,
     30.3,
     11.8
    ],
    [
     "3777 TT Motor",
     70.6,
     36.6,
     22.4
    ],
    [
     "3802 TT Motor Metal Gear",
     72,
     30.3,
     22.4
    ],
    [
     "324 NEMA-17 Stepper Motor",
     55,
     42.3,
     42.3
    ],
    [
     "858 Stepper Motor 5VDC",
     42,
     34.5,
     29
    ],
    [
     "711 DC Toy Motor",
     38,
     20,
     17
    ],
    [
     "413 Large Solenoid",
     69.7,
     29,
     24
    ],
    [
     "3190 DRV8871 Breakout",
     24.1,
     20.3,
     12.1
    ],
    [
     "6109 A4988 Driver",
     26.7,
     24.1,
     12
    ],
    [
     "6121 TMC2209 Driver",
     26.7,
     24.1,
     12
    ],
    [
     "2927 Motor FeatherWing",
     50.8,
     22.9,
     10.2
    ],
    [
     "2928 Servo PWM FeatherWing",
     50.8,
     22.9,
     10.2
    ],
    [
     "815 Servo Driver 16 Channel",
     62.2,
     25.4,
     12.1
    ],
    [
     "1438 Adafruit MotorShield",
     68.6,
     53.3,
     13.1
    ],
    [
     "1253 Aluminum Timing Pulley",
     25.5,
     25.5,
     17
    ],
    [
     "1866 Slide Rail Platform",
     59,
     47,
     20
    ],
    [
     "1221 Adafruit 2020 Extrusion",
     100,
     20,
     20
    ],
    [
     "6353 STSPIN220 Stepper Motor Driver",
     26.7,
     24.1,
     12
    ],
    [
     "6318 Solenoid Driver 8 Channel",
     50.8,
     27.9,
     12
    ]
   ]
  }
 },
 "sheet_text": "Servos, DC and stepper motors, solenoid, motor drivers (Adafruit-sold parts) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/adafruit-motors-servos-drivers/  (CC BY 4.0)\nBasis: Adafruit CAD (MIT) models of the sold motors and driver boards\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Micro servo metal-gear (1143): 23 × 12.2 × 29 mm with tabs 32.5 mm apart (SG90/MG90S class). Sub-micro (2201): 20 × 8.5 × 23 mm. Standard-size servo body (2941 DC motor in servo body): 40.5 × 20 × 38 mm.\n- 28BYJ-48 5 V stepper (858): Ø28 mm body, 19 mm deep, tabs 35 mm apart with Ø4.2 holes, Ø5 mm D-shaft offset 8 mm from centre. NEMA-17 (324): 42.3 face, 34 mm long. TT motors (3777/3802): 70 × 22 × 18.5 mm. DC toy motor (711): Ø24 × 20 mm, 2 mm shaft.\n- Driver boards: A4988 / TMC2209 (6109/6121) 15.5 × 20.5 mm StepStick; DRV8871 (3190) 22 × 25 mm; 16-ch servo driver (815) 62 × 25 mm; Motor FeatherWing 51 × 23 mm; large solenoid (413) 40 × 25 × 27 mm with a 10 mm stroke.\n\nproduct  bbox_l_mm  bbox_w_mm  bbox_h_mm\n1143 Micro Servo - High Torque Metal Gear  31.3  30.7  12.0\n2201 Submicro servo  30.1  24.9  11.8\n2307 MicroServo MG923B  36.8  31.5  12.0\n2941 DC Motor in Servo Body  35.9  30.3  11.8\n3777 TT Motor  70.6  36.6  22.4\n3802 TT Motor Metal Gear  72.0  30.3  22.4\n324 NEMA-17 Stepper Motor  55.0  42.3  42.3\n858 Stepper Motor 5VDC  42.0  34.5  29.0\n711 DC Toy Motor  38.0  20.0  17.0\n413 Large Solenoid  69.7  29.0  24.0\n3190 DRV8871 Breakout  24.1  20.3  12.1\n6109 A4988 Driver  26.7  24.1  12.0\n6121 TMC2209 Driver  26.7  24.1  12.0\n2927 Motor FeatherWing  50.8  22.9  10.2\n2928 Servo PWM FeatherWing  50.8  22.9  10.2\n815 Servo Driver 16 Channel  62.2  25.4  12.1\n1438 Adafruit MotorShield  68.6  53.3  13.1\n1253 Aluminum Timing Pulley  25.5  25.5  17.0\n1866 Slide Rail Platform  59.0  47.0  20.0\n1221 Adafruit 2020 Extrusion  100.0  20.0  20.0\n6353 STSPIN220 Stepper Motor Driver  26.7  24.1  12.0\n6318 Solenoid Driver 8 Channel  50.8  27.9  12.0\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Adafruit (official): Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products — STEP, F3D, STL — MIT — https://github.com/adafruit/Adafruit_CAD_Parts\n\nFree files (MIT License (Adafruit_CAD_Parts), Adafruit Industries; STEP + STL, 22 parts): https://xemstudio.com/files/adafruit/adafruit-motors-servos-drivers/index.json\nAPI: https://xemstudio.com/api/geometry?object=adafruit-motors-servos-drivers\n",
 "sources": [
  {
   "publisher": "Adafruit (official)",
   "title": "Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products",
   "url": "https://github.com/adafruit/Adafruit_CAD_Parts",
   "formats": [
    "STEP",
    "F3D",
    "STL"
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   "license": "MIT",
   "license_verified": true,
   "hosted": false
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 "xem": {
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  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "nema-17-stepper",
  "dc-motors-775-n20-tt",
  "nema-steppers-8-to-34",
  "gt2-pulleys",
  "shaft-couplers"
 ],
 "faq": [
  {
   "q": "What are micro servo (SG90/MG90S) dimensions?",
   "a": "Body 23 × 12.2 × 29 mm (to the top of the output gear), mounting tabs 32.5 mm apart with Ø2 mm holes, horn adds 10 mm; cutout for the body 23.5 × 12.7 mm."
  },
  {
   "q": "What are 28BYJ-48 stepper dimensions?",
   "a": "Ø28 mm, 19 mm deep, mounting tabs 35 mm apart (Ø4.2 holes), Ø5 mm D-shaft 10 mm long, offset 8 mm from the body centre."
  },
  {
   "q": "What size is an A4988 or TMC2209 StepStick?",
   "a": "15.5 × 20.5 mm board, two rows of 8 pins on 15.24 mm spacing; 10 mm tall with the heatsink."
  }
 ],
 "files_license": {
  "name": "MIT License (Adafruit_CAD_Parts)",
  "holder": "Adafruit Industries",
  "url": "https://github.com/adafruit/Adafruit_CAD_Parts/blob/main/LICENSE",
  "note": "Direct links to Adafruit's own CAD repository on GitHub (MIT). Xem Studio computed the bounding boxes from the STEP files and hosts nothing. Adafruit does not endorse this site."
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   "license": "MIT License (Adafruit_CAD_Parts)",
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 "markdown": "https://xemstudio.com/objects/adafruit-motors-servos-drivers/index.md"
}