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.
![2x Radlagersatz 2 Radlagersätze FAG 713623480](https://m.bearing-wholesalers.com/uploaded_images/d2016864-2x-radlagersatz-2-radlagers-tze-fag-713623480.jpg)
- 2x Radlagersatz 2 Radlagersätze FAG 713623480
- 1 pcs
- Negotiable
![2x Radlagersatz 2 Radlagersätze FAG 713640490](https://m.bearing-wholesalers.com/uploaded_images/d2016864-2x-radlagersatz-2-radlagers-tze-fag-713640490.jpg)
- 2x Radlagersatz 2 Radlagersätze FAG 713640490
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz FAG 713630650](https://m.bearing-wholesalers.com/uploaded_images/d2016863-radlager-satz-radlagersatz-fag-713630650.jpg)
- Radlager Satz Radlagersatz FAG 713630650
- 1 pcs
- Negotiable
![CADENZA K7 K-7 10- GeNuiNe TRANSFER DRIVEN GEAR BEARING 458293B200](https://m.bearing-wholesalers.com/uploaded_images/d2016861-cadenza-k7-k-7-10-genuine-transfer-driven-gear-bearing-458293b200.jpg)
- CADENZA K7 K-7 10- GeNuiNe TRANSFER DRIVEN GEAR BEARING 458293B200
- 1 pcs
- Negotiable
![FAG Radlagersatz 713 6197 50](https://m.bearing-wholesalers.com/uploaded_images/d2016864-fag-radlagersatz-713-6197-50.jpg)
- FAG Radlagersatz 713 6197 50
- 1 pcs
- Negotiable
![Yukon Gear & Axle AK 1561FD Axle Bearing/Seal Kit](https://m.bearing-wholesalers.com/uploaded_images/d2016864-yukon-gear-amp-axle-ak-1561fd-axle-bearing-seal-kit.jpg)
- Yukon Gear & Axle AK 1561FD Axle Bearing/Seal Kit
- 1 pcs
- Negotiable
![2x Radlagersatz 2 Radlagersätze NK 763315](https://m.bearing-wholesalers.com/uploaded_images/d2016864-2x-radlagersatz-2-radlagers-tze-nk-763315.jpg)
- 2x Radlagersatz 2 Radlagersätze NK 763315
- 1 pcs
- Negotiable
![Suzuki RM 125 shafts and gears 1998 model](https://m.bearing-wholesalers.com/uploaded_images/d2016863-suzuki-rm-125-shafts-and-gears-1998-model.jpg)
- Suzuki RM 125 shafts and gears 1998 model
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz FAG 713622200](https://m.bearing-wholesalers.com/uploaded_images/d2016863-radlager-satz-radlagersatz-fag-713622200.jpg)
- Radlager Satz Radlagersatz FAG 713622200
- 1 pcs
- Negotiable
![MAPCO Radlagersatz 26882](https://m.bearing-wholesalers.com/uploaded_images/d2016862-mapco-radlagersatz-26882.jpg)
- MAPCO Radlagersatz 26882
- 1 pcs
- Negotiable