# 130 size brushed DC motor: Ø20.1 / 15.1 × 25.0 mm, Ø2 shaft

> What are the dimensions of a 130 size DC motor?

- Category: Electronics › Motors
- Kind: Hardware
- Basis: Mabuchi FA-130RA outside size and drawing (can, flats, length, boss, shaft Ø); exposed shaft length from the Adafruit 130-size listing. Envelope only: the outside of the motor at its published sizes. The windings, magnets, brushes and bearings inside are not drawn.
- Page: https://xemstudio.com/objects/dc-motor-130-size/ · JSON: https://xemstudio.com/api/geometry?object=dc-motor-130-size · Plain text: https://xemstudio.com/objects/dc-motor-130-size/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**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.

## Notes

- Envelope only: the outside of the motor at its published sizes. The windings, magnets, brushes and bearings inside are not drawn.
- The can is Ø20.1 round with two flats 15.1 mm apart, 25.0 mm long from the front face to the back of the end cap.
- The front face has a Ø6.15 × 1.7 boss; the Ø2.0 shaft is drawn 8.0 mm beyond it (34.7 mm overall from the end cap to the shaft tip). Shaft length differs between makers and orders.
- This face has no tapped mounting holes on the FA-130RA drawing; a 130 is usually held in a clip or a cradle on the flats. Some other makers' 130s add two small tapped holes: check the drawing of the motor in hand.
- Terminal tabs and the rear bushing are not drawn (their sizes are not given in a form I could check).
- In DIY Stirling builds, brushed DC motors of this kind are turned by the engine and used as a generator (an LED, a resistor or a meter across the leads) or as a load on the flywheel shaft.

## 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 |
|---|---|---|---|---|
| shaft | Ø2.0 | pinion, pulley or gear bore (pressed on) | press | dc-130-* |
| front boss | Ø6.15 × 1.7 | mount recess | socket | dc-130-* |
| can on its flats | Ø20.1, 15.1 across the flats × 25.0 | clip or cradle | socket | dc-130-* |

## Sizes

| feature | mm | from |
|---|---|---|
| can (round) | Ø20.1 | Mabuchi FA-130RA |
| can across the flats | 15.1 | Mabuchi FA-130RA |
| can length | 25.0 | Mabuchi FA-130RA |
| shaft | Ø2.0 | Mabuchi FA-130RA |
| front boss | Ø6.15 × 1.7 | Mabuchi FA-130RA drawing |
| shaft exposed | 8 (drawn from the boss) | Adafruit 711, AriesRC |
| mounting holes | none on this drawing | Mabuchi FA-130RA |

## Where the files are

- Mabuchi Motor: [Let's Motorize: motor line-up with outside size (length × diameter) and shaft Ø for FA-130RA, RE-140RA, RE-260RA, RE-280RA, RS-380PH, RS-540SH](https://www.mabuchi-motor.co.jp/motorize/branch/motor/) — web — manufacturer page (verify at link)
- Mabuchi Motor (hosted by Pololu): [FA-130RA datasheet and dimension drawing](https://www.pololu.com/file/0J11/fa_130ra.pdf) — PDF — manufacturer datasheet (verify at link)
- Adafruit (product 711, as reproduced by components101): [DC toy / hobby motor, 130 size: body 27.5 × 20 × 15, shaft 8 mm × Ø2](https://components101.com/sites/default/files/component_datasheet/Toy DC motor Datasheet.pdf) — web — listing (verify at link)
- AriesRC: [Micro DC motors 130 / 260 / 280 / 370 / 380 / 385: listed body, shaft and hole sizes](https://www.ariesrc.gr/en/brushed-motor/21259-1pcs-micro-dc-motor-3v-6-v-12v-130-260-280-370-380-385-high-speed-carbon-brush-electric-motor.html) — web — listing (verify at link)

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

Index: https://xemstudio.com/files/hardware/dc-motor-130-size/index.json

- dc-130-size: [STEP](https://xemstudio.com/files/hardware/dc-motor-130-size/dc-130-size.step) · [STL](https://xemstudio.com/files/hardware/dc-motor-130-size/dc-130-size.stl) — 130 size envelope: can Ø20.1 with flats 15.1 apart × 25.0, boss Ø6.15 × 1.7, Ø2.0 shaft 8.0 beyond the boss (34.7 overall)

## How it fits

### Connects to
- [Spur gears, involute 20°: module 0.5, 1 and 2, 12–60 teeth](https://xemstudio.com/objects/spur-gears-involute/): module 0.5 gears with a Ø2 bore on the Ø2.0 shaft (press)

### Alternatives
- [370 size brushed DC motor: Ø24.4 × 30.8 mm, 2 × M3 on 17](https://xemstudio.com/objects/dc-motor-370-size/): round Ø24.4 can with M3 face holes
- [8520 (820) coreless motor: Ø8.5 × 20 mm, Ø1 shaft](https://xemstudio.com/objects/coreless-motor-8520/): smaller, no iron in the rotor

### Also needed
- [Through-hole LEDs: 3, 5, 8, 10 mm, flat-top, rectangular, RGB](https://xemstudio.com/objects/leds-tht/): an LED across the leads shows generator output

## Questions

**What are the dimensions of a 130 motor?**

A Ø20.1 can with flats 15.1 apart, 25.0 long, with a Ø2.0 shaft; the front boss is Ø6.15 × 1.7. About 8 mm of shaft shows on common units.

**Does a 130 motor have mounting holes?**

Not on Mabuchi's FA-130RA drawing: it is held by its flats in a clip or cradle. Some other 130s have two small tapped holes on the face.

**What shaft size is a 130 motor?**

2.0 mm round. Pinions and pulleys for it are pressed on.

## Fits with

- [370 size brushed DC motor: Ø24.4 × 30.8 mm, 2 × M3 on 17](https://xemstudio.com/objects/dc-motor-370-size/)
- [380 / 385 size brushed DC motor: Ø27.7 × 37.8 mm, 2 × M2.6 on 16](https://xemstudio.com/objects/dc-motor-380-size/)
- [Spur gears, involute 20°: module 0.5, 1 and 2, 12–60 teeth](https://xemstudio.com/objects/spur-gears-involute/)
- [Through-hole LEDs: 3, 5, 8, 10 mm, flat-top, rectangular, RGB](https://xemstudio.com/objects/leds-tht/)
- [775 brushed DC motor Ø42 × 66.7 mm, Ø5 shaft](https://xemstudio.com/objects/775-dc-motor/)