Library › Hardware › Motion ·

TT yellow gearmotor 70 × 22.5 × 18.5 mm, Ø5.5 double-D shafts

Name: TT yellow gearmotor 70 × 22.5 × 18.5 mm, Ø5.5 double-D shafts dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What are TT motor mounting dimensions? · Hardware · basis: Common supplier drawings for the yellow TT (1:48) gearmotor; clones vary by about ±0.5 mm

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

sizes: 5 in table

Notes

The TT envelope is a 37 × 22.5 × 18.5 mm gearbox plus a Ø18.5 × 33 motor: 70 × 22.5 × 18.5 overall.
The output is a Ø5.5 double-D shaft, 3.7 mm across the flats, sticking out 9.5 mm on both sides (41.5 across).
Two Ø3.2 holes run through the gearbox's 22.5 mm width, 17.6 mm apart along its length and 17.5 mm apart in height.
Many clones vary by about ±0.5 mm.

Sizes

feature	size_mm
overall	70 × 22.5 × 18.5
gearbox	37 × 22.5 × 18.5
shaft	Ø5.5 double-D, 3.7 across flats
shaft span	41.5
holes	2 × Ø3.2

Mating features

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

feature	exact	mates with	fit	files
TT shaft	Ø5.5 double-D, 3.7 across the flats	wheel hub	press	motor-tt-*
mounting holes	Ø3.2 × 2, 17.6 apart	M3 screws through the gearbox	designed	motor-tt-*

Where the files are

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

Pololu	Micro metal gearmotor dimension diagram	PDF, STEP	Pololu site terms verify
DFRobot	TT geared motor drawing	web	DFRobot site terms verify
Wikipedia	DC motor	web	CC BY-SA 4.0 (text)

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

motor-tt-dual-shaft

TT gearmotor envelope: 70 long (37 gearbox + 33 motor), 22.5 tall × 18.8 thick, Ø5.5 double-D output shaft (3.7 across the flats) 37 tip to tip, 25.8 from the motor end of the gearbox; two Ø3.2 mounting holes through the 18.8 thickness, 5 from the motor end, 17.6 apart one above the other (0.85 mm of wall to the top and bottom faces)

STEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=tt-gearmotor

TT yellow gearmotor 70 × 22.5 × 18.5 mm, Ø5.5 double-D shafts, isometric render of a generated part — Render of motor-tt-dual-shaft from the free STEP; not to scale.

How it fits

Questions

What are TT motor dimensions?

70 × 22.5 × 18.5 mm overall with a Ø5.5 double-D shaft (3.7 across the flats) on both sides.

What wheel fits a TT motor?

Any hub with the Ø5.5 double-D, 3.7 mm across the flats; the standard yellow wheels are 65 mm.