# Escape wheel, 30 teeth, Ø50, club-free pointed teeth raked forward

> What does an escape wheel look like?

- 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/escape-wheel-30t-d50/ · JSON: https://xemstudio.com/api/geometry?object=escape-wheel-30t-d50 · Plain text: https://xemstudio.com/objects/escape-wheel-30t-d50/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/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 50.0 | 49.73 | 3.0 |

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

## Notes

- Ø50 × 3 escape wheel with 30 pointed teeth 2.5 mm deep (root Ø40), the locking face of each tooth raked 3° forward so only the tip touches a pallet; Ø5 bore. It turns anticlockwise (seen from the front) under the drive weight or spring.
- Works with the dead-beat (Graham) anchor and the recoil anchor on this site: pallets span 7½ teeth with the anchor pivot 35.36 mm above the wheel centre.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| teeth | 30 |
| tip Ø | 50 mm |
| root Ø | 40 mm |
| thickness | 3 mm |
| bore | Ø5 |

## 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. 289: figure, his text and an animation](https://507movements.com/mm_289.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/deadbeat-escapement-mechanism/) — web — Publisher's page; dimensions are facts

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

Index: https://xemstudio.com/files/hardware/escape-wheel-30t-d50/index.json

- escape-wheel-30t-d50: [STEP](https://xemstudio.com/files/hardware/escape-wheel-30t-d50/escape-wheel-30t-d50.step) · [STL](https://xemstudio.com/files/hardware/escape-wheel-30t-d50/escape-wheel-30t-d50.stl) — wheel, z 0..3, a tooth tip on +X

## Questions

**What does an escape wheel look like?**

Ø50 × 3 escape wheel with 30 pointed teeth 2.5 mm deep (root Ø40), the locking face of each tooth raked 3° forward so only the tip touches a pallet; Ø5 bore. It turns anticlockwise (seen from the front) under the drive weight or spring.

## Fits with

- [Dead-beat (Graham) escapement: escape wheel and anchor](https://xemstudio.com/objects/deadbeat-escapement-mechanism/)
- [Recoil anchor escapement: escape wheel and anchor](https://xemstudio.com/objects/recoil-anchor-escapement-mechanism/)