# Pololu #4747 6.3:1 37D Gearmotor

> Pololu #4747 is a 12 V brushed DC 37D metal gearmotor (no encoder) with 6.25:1 reduction (helical first stage), 1600 rpm no-load output, 3.0 kg·cm extrapolated stall torque, 5.5 A extrapolated stall current, 6 mm D-shaft, six M3 face holes, two solder-tab terminals, 37 mm × 50 mm, 175 g.

- Manufacturer: Pololu
- Part number: 4747
- Category: Motors
- Canonical page: https://www.xirkit.io/products/pololu-4747-6-3-1-37d-gearmotor-e857
- Pinout: https://www.xirkit.io/products/pololu-4747-6-3-1-37d-gearmotor-e857/pinout
- Structured JSON: https://www.xirkit.io/products/pololu-4747-6-3-1-37d-gearmotor-e857/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Motor type | gearmotor |
| Rated voltage | 12 V |
| Stall torque | 0.294 N·m |
| No-load speed | 1,600 rpm |
| Gear ratio | 6.25:1 |
| Shaft diameter | 6 mm |
| Encoder | none |
| Dimensions | 37 × 37 × 66 mm |
| Certifications | RoHS 3 compliant |

## Pinout (2 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| M1 | — | motor plus | — | m1 | — | — | — | — | — | — | — |
| M2 | — | motor minus | — | m2 | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.pololu.com | 38.95 USD | in_stock | 2026-10-01 | https://www.pololu.com/product/4747 |

## FAQ

**How much does the Pololu #4747 6.3:1 37D Gearmotor cost?**

From $38.95 at www.pololu.com. Prices are observed unit prices before tax and shipping.

**What are the Pololu #4747 6.3:1 37D Gearmotor dimensions?**

37 × 37 × 66 mm. A STEP model is available for enclosure fit checks.

**Where does this Pololu #4747 6.3:1 37D Gearmotor data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Pololu #4747 6.3:1 37D Gearmotor datasheet](https://www.pololu.com/file/0J1706/pololu-37d-metal-gearmotors.pdf)
- [www.pololu.com listing](https://www.pololu.com/product/4747)

## Part graph

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