# Pololu Micro Metal Gearmotor HP 6V (e.g. 100:1): 12 × 10 mm body, 3 mm D-shaft and M1.6 face holes

> What are the Pololu Micro Metal Gearmotor dimensions, shaft and mounting holes?

- Category: Electronic components › Motors
- Kind: Modern device
- Basis: Pololu's micro metal gearmotor STEP model (no encoder) and the Pololu micro metal gearmotor dimension diagram.
- Page: https://xemstudio.com/objects/pololu-micro-metal-gearmotor-hp-6v/ · JSON: https://xemstudio.com/api/geometry?object=pololu-micro-metal-gearmotor-hp-6v · Plain text: https://xemstudio.com/objects/pololu-micro-metal-gearmotor-hp-6v/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 35.8 | 12.0 | 10.0 |

**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.

## Notes

- Datum: shaft axis on Z at x=0, y=0; back terminals on z=0, output face up.
- Motor can Ø12.0 with flats to 10.0 (z=2.8..16.8); gearbox 12.0 × 10.0 × 9.0 (z=16.8..25.8).
- Output shaft Ø3.0 D-shaft, 10.0 long, flat 0.5 deep.
- Two M1.6 tapped holes in the gearbox face at (+3.8, +2.8) and (−3.8, −2.8), 9.44 apart diagonally.
- Same outside for HP, MP and LP 6V and every ratio except 1000:1 (12.0 mm gearbox); carbon-brush (HPCB) and extended-shaft versions are longer and not modelled.
- Exact nominal mm; terminals modelled as tabs, the small rear boss is not modelled.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| Output shaft | Ø3.0 D-shaft, 10.0 long | Pololu wheel / hub with 3 mm D-bore | press | all |
| Gearbox face holes | 2 × M1.6, 9.44 apart diagonal | M1.6 screws through a face-mount bracket | designed | all |
| Gearbox body | 12.0 × 10.0 mm | clamp-style motor bracket | clamp | all |

## Sizes

| feature | size (mm) |
|---|---|
| body (X × Y) | 12.0 × 10.0 |
| overall length incl. shaft | 35.8 |
| gearbox length | 9.0 |
| shaft | Ø3.0 D × 10.0 |
| face holes | 2 × M1.6, (±3.8, ±2.8) |

## Where the files are

- Pololu: [Micro Metal Gearmotor dimension diagram (PDF)](https://www.pololu.com/file/0J949/micro-metal-gearmotors-dimensions.pdf) — web — Publisher's page; dimensions are facts
- Pololu: [Micro Metal Gearmotor 3D STEP models](https://www.pololu.com/file/0J2042/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/pololu-micro-metal-gearmotor-hp-6v/index.json

- pololu-micro-metal-gearmotor-hp-6v: [STEP](https://xemstudio.com/files/hardware/pololu-micro-metal-gearmotor-hp-6v/pololu-micro-metal-gearmotor-hp-6v.step) · [STL](https://xemstudio.com/files/hardware/pololu-micro-metal-gearmotor-hp-6v/pololu-micro-metal-gearmotor-hp-6v.stl) — Pololu Micro Metal Gearmotor HP 6V (e.g. 100:1): 12 × 10 mm body, 3 mm D-shaft and M1.6 face holes

## Questions

**How big is a Pololu micro metal gearmotor?**

12.0 × 10.0 mm cross-section, 35.8 mm long including the 10.0 mm shaft (9.0 mm gearbox).

**What are the mounting holes?**

Two M1.6 tapped holes in the gearbox face at (±3.8, ±2.8) mm from the shaft axis.

**What shaft does it have?**

A Ø3.0 mm D-shaft, 10.0 mm long, with a 0.5 mm deep flat.

## Fits with

- [775 brushed DC motor Ø42 × 66.7 mm, Ø5 shaft](https://xemstudio.com/objects/775-dc-motor/)
- [JGA25-370 gearmotor: Ø25 gearbox on a 370 can, Ø4 D-shaft](https://xemstudio.com/objects/jga25-370-gearmotor/)
- [8520 (820) coreless motor: Ø8.5 × 20 mm, Ø1 shaft](https://xemstudio.com/objects/coreless-motor-8520/)
- [Metric shafts Ø3 to Ø10 with D-flats and clip grooves](https://xemstudio.com/objects/metric-shafts/)
- [Metric machine screws M1.6–M10: pan head ISO 7045 (cross) / ISO 1580 (slotted), cheese head ISO 1207, countersunk ISO 7046-1 — head sizes, recess sizes + models](https://xemstudio.com/objects/machine-screws-metric-pan-cheese-csk/)