# Anti-friction wheel Ø40 × 10, Ø8 bore

> What is an anti-friction wheel?

- Category: Hardware › Mechanism parts
- Kind: Modern device
- Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
- Page: https://xemstudio.com/objects/anti-friction-wheel-40x10-bore8/ · JSON: https://xemstudio.com/api/geometry?object=anti-friction-wheel-40x10-bore8 · Plain text: https://xemstudio.com/objects/anti-friction-wheel-40x10-bore8/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files Xem Studio Design License (free to use and sell from, not to redistribute as files: https://xemstudio.com/license/)
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 40.0 | 40.0 | 10.0 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Plain Ø40 × 10 wheel on a Ø8 axle: two of them, 44 mm apart, carry a shaft on their rims, so the shaft rolls on the wheels instead of sliding in a bearing.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| wheel | Ø40 × 10 |
| bore | Ø8 |

## Where the files are

- Henry T. Brown (1868, public domain): [Five Hundred and Seven Mechanical Movements — scan on archive.org](https://archive.org/details/fivehundredseven00browiala) — web — Publisher's page; dimensions are facts
- 507movements.com: [Brown's movement No. 250: figure, his text and an animation](https://507movements.com/mm_250.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/anti-friction-wheel-bearing-mechanism/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, Xem Studio Design License, Xem Studio)

Index: https://xemstudio.com/files/hardware/anti-friction-wheel-40x10-bore8/index.json · license: https://xemstudio.com/files/hardware/anti-friction-wheel-40x10-bore8/LICENSE.md

- anti-friction-wheel-40x10-bore8: [STEP](https://xemstudio.com/files/hardware/anti-friction-wheel-40x10-bore8/anti-friction-wheel-40x10-bore8.step) · [STL](https://xemstudio.com/files/hardware/anti-friction-wheel-40x10-bore8/anti-friction-wheel-40x10-bore8.stl) — wheel, axis Z, z 0..10

## Questions

**What is an anti-friction wheel?**

Plain Ø40 × 10 wheel on a Ø8 axle: two of them, 44 mm apart, carry a shaft on their rims, so the shaft rolls on the wheels instead of sliding in a bearing.

## Fits with

- [Shaft carried on the rims of two pairs of wheels (anti-friction bearing)](https://xemstudio.com/objects/anti-friction-wheel-bearing-mechanism/)