De qué está hecho engranaje
A toothed wheel that transmits rotation and changes speed and torque.
- Par motor — utiliza. The gear ratio changes torque and speed.
- Bronce — está hecho de. Ancient gears were bronze.
- Madera — está hecho de. In mills — wooden ones.
- Hierro fundido — está hecho de. Large gears of machines and mills were cast in iron: it fills a mould well and wears slowly.
- Plástico — está hecho de. Small gears in toys, clocks and printers are plastic: light and quiet.