# 90° toothed sector (module 1, 60 T) with a 60 mm arm and Ø3 pin hole, Ø5 bore

> What is a toothed sector with an arm?

- 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/sector-gear-m1-60t-90deg-arm-60-b5/ · JSON: https://xemstudio.com/api/geometry?object=sector-gear-m1-60t-90deg-arm-60-b5 · Plain text: https://xemstudio.com/objects/sector-gear-m1-60t-90deg-arm-60-b5/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 |
|---|---|---|
| 43.84 | 98.98 | 8.0 |

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

## Notes

- 8 mm plate: a 90° sector of a module 1, 60-tooth gear (pitch R30) on a Ø14 hub (Ø5 bore) with a 16 mm wide arm 60 mm long on the opposite side ending in a Ø3 hole for a connecting rod. A tooth space is centred on the sector's mid-line (+Y).
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| sector | 90° of 60 T, module 1 (pitch R30) |
| arm | 60 mm to a Ø3 hole |
| hub | Ø14, Ø5 bore |
| thickness | 8 mm |

## 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. 133: figure, his text and an animation](https://507movements.com/mm_133.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/sector-gear-press-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/sector-gear-m1-60t-90deg-arm-60-b5/index.json · license: https://xemstudio.com/files/hardware/sector-gear-m1-60t-90deg-arm-60-b5/LICENSE.md

- sector-gear-m1-60t-90deg-arm-60: [STEP](https://xemstudio.com/files/hardware/sector-gear-m1-60t-90deg-arm-60-b5/sector-gear-m1-60t-90deg-arm-60.step) · [STL](https://xemstudio.com/files/hardware/sector-gear-m1-60t-90deg-arm-60-b5/sector-gear-m1-60t-90deg-arm-60.stl) — teeth centred on +Y, arm on −Y, z 0..8

## Questions

**What is a toothed sector with an arm?**

8 mm plate: a 90° sector of a module 1, 60-tooth gear (pitch R30) on a Ø14 hub (Ø5 bore) with a 16 mm wide arm 60 mm long on the opposite side ending in a Ø3 hole for a connecting rod. A tooth space is centred on the sector's mid-line (+Y).

## Fits with

- [Hand crank, pinion and toothed sector pressing through a connecting rod](https://xemstudio.com/objects/sector-gear-press-mechanism/)