Gear
A gear or cogwheel is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part to transmit torque. Geared devices can change the speed, torque, and direction of a power source. Gears almost always produce a change in torque, creating a mechanical advantage, through their gear ratio, and thus may be considered a simple machine. The teeth on the two meshing gears all have the same shape.Two or more meshing gears, working in a sequence, are called a gear train or a transmission. A gear can mesh with a linear toothed part, called a rack, thereby producing translation instead of rotation.
The gears in a transmission are analogous to the wheels in a crossed, belt pulley system. An advantage of gears is that the teeth of a gear prevent slippage.
When two gears mesh, if one gear is bigger than the other, a mechanical advantage is produced, with the rotational speeds, and the torques, of the two gears differing in proportion to their diameters.
In transmissions with multiple gear ratios—such as bicycles, motorcycles, and cars—the term "gear" as in "first gear" refers to a gear ratio rather than an actual physical gear. The term describes similar devices, even when the gear ratio is continuous rather than discrete, or when the device does not actually contain gears, as in a continuously variable transmission.
![Radlager Satz Radlagersatz VKBA6532](https://m.bearing-wholesalers.com/uploaded_images/d2016863-radlager-satz-radlagersatz-vkba6532.jpg)
- Radlager Satz Radlagersatz VKBA6532
- 1 pcs
- Negotiable
![2x FEBI BILSTEIN Radlagersatz 2 Radlagersätze rechts und links 34763](https://m.bearing-wholesalers.com/uploaded_images/d2016861-2x-febi-bilstein-radlagersatz-2-radlagers-tze-rechts-und-links-34763.jpg)
- 2x FEBI BILSTEIN Radlagersatz 2 Radlagersätze rechts und links 34763
- 1 pcs
- Negotiable
![621304533 LUK OE QUALITY CLUTCH KIT SET](https://m.bearing-wholesalers.com/uploaded_images/d2016863-621304533-luk-oe-quality-clutch-kit-set.jpg)
- 621304533 LUK OE QUALITY CLUTCH KIT SET
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz NK 754725](https://m.bearing-wholesalers.com/uploaded_images/d2016864-radlager-satz-radlagersatz-nk-754725.jpg)
- Radlager Satz Radlagersatz NK 754725
- 1 pcs
- Negotiable
![OMC Johnson Evinrude 375835 Pinion Gear with Bearing Chase](https://m.bearing-wholesalers.com/uploaded_images/d2016862-omc-johnson-evinrude-375835-pinion-gear-with-bearing-chase.jpg)
- OMC Johnson Evinrude 375835 Pinion Gear with Bearing Chase
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz OPTIMAL Vorderachse Links Rechts 301132](https://m.bearing-wholesalers.com/uploaded_images/d2016864-radlager-satz-radlagersatz-optimal-vorderachse-links-rechts-301132.jpg)
- Radlager Satz Radlagersatz OPTIMAL Vorderachse Links Rechts 301132
- 1 pcs
- Negotiable
![FEBI BILSTEIN Radlagersatz 23489](https://m.bearing-wholesalers.com/uploaded_images/d2016865-febi-bilstein-radlagersatz-23489.jpg)
- FEBI BILSTEIN Radlagersatz 23489
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz VKBA3684](https://m.bearing-wholesalers.com/uploaded_images/d2016863-radlager-satz-radlagersatz-vkba3684.jpg)
- Radlager Satz Radlagersatz VKBA3684
- 1 pcs
- Negotiable
![2x Radlagersatz 2 Radlagersätze VKBA1470](https://m.bearing-wholesalers.com/uploaded_images/d2016865-2x-radlagersatz-2-radlagers-tze-vkba1470.jpg)
- 2x Radlagersatz 2 Radlagersätze VKBA1470
- 1 pcs
- Negotiable