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RC servo sizes: 9 g micro (SG90, MG90S), standard (Futaba S3003, Hitec HS-311), 1/4 scale (HS-805BB)

What are the dimensions of a standard RC servo? · Modern device · basis: Servo datasheets and maker / retailer spec pages

Also called: sg90 dimensions, standard servo size, mg90s dimensions, servo cutout size, rc servo dimensions

Exact dimensions. True size, with no printing tolerance added.

sizes
5 in table

Notes

  • Micro 9 g: SG90 about 22.2 × 11.8 × 31; MG90S 22.8 × 12.2 × 28.5 (13.4 g).
  • Standard: Futaba S3003 40–41 × 20 × 36 (37 g); Hitec HS-311 39.9 × 19.8 × 36.3 (42.8 g), 24-tooth spline. Quarter scale: Hitec HS-805BB 66 × 30 × 57.6 (152 g).
  • Mounting-tab hole spacing, tab hole size and most spline tooth counts are not published as text for these servos: measure the tabs, or design the cut-out around the body envelope and fix with the supplied screws.
  • Body envelopes (free STEP/STL) are for pockets and cut-outs; add 0.3 mm a side.

RC servo sizes: 9 g micro (SG90, MG90S), standard (Futaba S3003… size chart

servoclasslength (mm)width (mm)height (mm)weight (g)spline
SG90micro 9 g22.211.831.09None
TowerPro MG90Smicro22.812.228.513.4None
Futaba S3003standard40–41203637None
Hitec HS-311standard39.919.836.342.824T
Hitec HS-805BB1/4 scale663057.6152heavy-duty

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

SG90 datasheet (TowerPro)SG90 micro servowebPublisher's page; dimensions are facts
GetFPV (TowerPro spec)MG90SwebPublisher's page; dimensions are facts
Futaba S3003 datasheetS3003 standard servowebPublisher's page; dimensions are facts
ServoDatabaseHitec HS-311webPublisher's page; dimensions are facts
SparkFun (Hitec spec)HS-805BB giant scalewebPublisher's page; dimensions are facts

Free files

★ Free files 5 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

servo-body-sg90-microServo body envelope 22.2 × 11.8 × 31.0 mm (tabs and output not modelled)STEP · STL
servo-body-mg90s-microServo body envelope 22.8 × 12.2 × 28.5 mm (tabs and output not modelled)STEP · STL
servo-body-standard-40x20x36Servo body envelope 40.0 × 20.0 × 36.0 mm (tabs and output not modelled)STEP · STL
servo-body-hs-311-standardServo body envelope 39.9 × 19.8 × 36.3 mm (tabs and output not modelled)STEP · STL
servo-body-quarter-scale-66x30x57.6Servo body envelope 66.0 × 30.0 × 57.6 mm (tabs and output not modelled)STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=rc-servos

RC servo sizes: 9 g micro (SG90, MG90S), standard (Futaba S3003, Hitec HS-311), 1/4 scale (HS-805BB), isometric render of a generated part
Render of servo-body-standard-40x20x36 from the free STEP; not to scale.

Fits with

Flight controller and ESC stack sizes: 30.5×30.5 M3, 20×20, 25.5 / 26 whoop, 16×16 nano, wing FCs, Pixhawk, isometric render of a generated part
Flight controller and ESC stack sizes: 30.5×30.5 M3, 20×20, 25.5 / 26 whoop, 16×16 nano, wing FCs, Pixhawk9 sizes★ 5 files
RC plane outrunners (2212, 2216, 2826, 3508, 4110, 6374) and car inrunners (540 / 3650, 4274, 1/8 scale), isometric render of a generated part
RC plane outrunners (2212, 2216, 2826, 3508, 4110, 6374) and car inrunners (540 / 3650, 4274, 1/8 scale)12 sizes★ 5 files

Questions

How big is an SG90 servo?

About 22.2 × 11.8 × 31 mm, 9 g.

How big is a standard servo?

About 40 × 20 × 36 mm (Futaba S3003, Hitec HS-311).