# Brake drum Ø60 × 20, Ø10 bore

> What does a strap brake grip?

- 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/brake-drum-60x20-bore10/ · JSON: https://xemstudio.com/api/geometry?object=brake-drum-60x20-bore10 · Plain text: https://xemstudio.com/objects/brake-drum-60x20-bore10/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 |
|---|---|---|
| 60.0 | 60.0 | 20.0 |

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

## Notes

- Plain Ø60 × 20 drum on the hoist shaft (Ø10 bore): the steel strap wraps it.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| drum | Ø60 × 20 |
| bore | Ø10 |

## 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. 242: figure, his text and an animation](https://507movements.com/mm_242.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/crane-strap-brake-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/brake-drum-60x20-bore10/index.json · license: https://xemstudio.com/files/hardware/brake-drum-60x20-bore10/LICENSE.md

- brake-drum-60x20-bore10: [STEP](https://xemstudio.com/files/hardware/brake-drum-60x20-bore10/brake-drum-60x20-bore10.step) · [STL](https://xemstudio.com/files/hardware/brake-drum-60x20-bore10/brake-drum-60x20-bore10.stl) — drum, axis Z, z 0..20

## Questions

**What does a strap brake grip?**

Plain Ø60 × 20 drum on the hoist shaft (Ø10 bore): the steel strap wraps it.

## Fits with

- [Crane strap brake: steel strap round a drum, tightened by a lever](https://xemstudio.com/objects/crane-strap-brake-mechanism/)