Library › Electronic components › Motors ·

ROBOTIS Dynamixel AX-12A servo: 32 × 50 mm body, horn holes and frame-mount holes

What are the Dynamixel AX-12A dimensions, horn and frame-mount hole positions? · Modern device · basis: ROBOTIS e-Manual AX-12A dimension drawing.

Also called: ROBOTIS Dynamixel AX-12A, AX-12A, dynamixel ax12a, ax-12a dimensions, ax-12a horn holes, dynamixel ax-12 servo

Exact dimensions. Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. Mating features

length
50.0 mm
width
37.0 mm
height
32.0 mm

Notes

  • Datum: bottom on z=0, centred on X, body y=−16..+16; horn on the −Y face, its axis at z=38.5 (11.5 below the top).
  • Body 32 × 32 × 50; horn Ø22 standing 5 proud of the front face (modelled depth 37).
  • Horn: 4 × M2 tapped holes on a Ø16 circle, modelled as Ø1.6 × 4.0 deep.
  • Frame holes for M2 bolts (modelled Ø2.2 × 5.0, front face): two columns 27 apart at z=32, 24, 16, 8 (8 pitch), plus a pair 16 apart at z=2.5.
  • Not modelled: the narrowing of the upper body to 26 wide, the 3 mm front boss and the rear hinge bosses (overall depth 40 with them).
  • Exact nominal mm.

ROBOTIS Dynamixel AX-12A servo: 32 × 50 mm body, horn holes and… size chart

holesx (mm)z (mm)size
horn0 / ±846.5, 30.5 / 38.54 × M2 on Ø16
frame columns±13.532, 24, 16, 88 × M2
frame bottom pair±82.52 × M2

Mating features

Drawn at the exact size. Open press, slide, run and socket features by your process's clearance (tolerances by process); leave designed gaps and clamp fits as drawn.

featureexactmates withfitfiles
HornØ22, 4 × M2 on Ø16 circlehorn-mounted bracket or linkdesignedall
Frame holesM2, columns 27 apart, 8 pitchROBOTIS frame or custom side bracketdesignedall

Where the files are

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

ROBOTISAX-12/AX-12A e-ManualwebPublisher's page; dimensions are facts
ROBOTIS (GitHub)AX-12A dimension drawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

robotis-dynamixel-ax-12aROBOTIS Dynamixel AX-12A servo: 32 × 50 mm body, horn holes and frame-mount holesSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=robotis-dynamixel-ax-12a

ROBOTIS Dynamixel AX-12A servo: 32 × 50 mm body, horn holes and frame-mount holes, isometric render of a generated part
Render of robotis-dynamixel-ax-12a from the free STEP; not to scale.

Fits with

Questions

How big is the AX-12A?

32 × 50 mm body, 32 mm deep plus a 5 mm horn; 40 mm overall depth including rear bosses.

What are the horn holes?

Four M2 tapped holes on a Ø16 mm circle around the horn axis, 11.5 mm below the top.

What is the side frame-hole pattern?

M2 holes in two columns 27 mm apart at 8 mm pitch, plus a bottom pair 16 mm apart.