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.
![2006 YAMAHA 700R RAPTOR 700 FLYWHEEL ONE WAY BEARING STARTER GEAR](https://m.bearing-wholesalers.com/uploaded_images/d2016863-2006-yamaha-700r-raptor-700-flywheel-one-way-bearing-starter-gear.jpg)
- 2006 YAMAHA 700R RAPTOR 700 FLYWHEEL ONE WAY BEARING STARTER GEAR
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz VKBA3600](https://m.bearing-wholesalers.com/uploaded_images/d2016864-radlager-satz-radlagersatz-vkba3600.jpg)
- Radlager Satz Radlagersatz VKBA3600
- 1 pcs
- Negotiable
![3000 386 001 SACHS OE QUALITY CLUTCH KIT SET](https://m.bearing-wholesalers.com/uploaded_images/d2016865-3000-386-001-sachs-oe-quality-clutch-kit-set.jpg)
- 3000 386 001 SACHS OE QUALITY CLUTCH KIT SET
- 1 pcs
- Negotiable
![2x Radlagersatz 2 Radlagersätze VKBA6653](https://m.bearing-wholesalers.com/uploaded_images/d2016861-2x-radlagersatz-2-radlagers-tze-vkba6653.jpg)
- 2x Radlagersatz 2 Radlagersätze VKBA6653
- 1 pcs
- Negotiable
![New Genuine Mopar 4412229AB Rear Sun Gear Bearing OEM](https://m.bearing-wholesalers.com/uploaded_images/d2016863-new-genuine-mopar-4412229ab-rear-sun-gear-bearing-oem.jpg)
- New Genuine Mopar 4412229AB Rear Sun Gear Bearing OEM
- 1 pcs
- Negotiable
![2x Radlagersatz 2 Radlagersätze Hinten Hinterachse VKBA6943](https://m.bearing-wholesalers.com/uploaded_images/d2016865-2x-radlagersatz-2-radlagers-tze-hinten-hinterachse-vkba6943.jpg)
- 2x Radlagersatz 2 Radlagersätze Hinten Hinterachse VKBA6943
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz OPTIMAL Vorderachse Links Rechts 301006](https://m.bearing-wholesalers.com/uploaded_images/d2016861-radlager-satz-radlagersatz-optimal-vorderachse-links-rechts-301006.jpg)
- Radlager Satz Radlagersatz OPTIMAL Vorderachse Links Rechts 301006
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz NK 763724](https://m.bearing-wholesalers.com/uploaded_images/d2016861-radlager-satz-radlagersatz-nk-763724.jpg)
- Radlager Satz Radlagersatz NK 763724
- 1 pcs
- Negotiable
![Yukon Gear & Axle AK FD60/70 Axle Bearing/Seal Kit](https://m.bearing-wholesalers.com/uploaded_images/d2016864-yukon-gear-amp-axle-ak-fd60-70-axle-bearing-seal-kit.jpg)
- Yukon Gear & Axle AK FD60/70 Axle Bearing/Seal Kit
- 1 pcs
- Negotiable
![Radlager Satz Radlagersatz MAXGEAR Hinterachse 2519/MG 33-0337](https://m.bearing-wholesalers.com/uploaded_images/d2016863-radlager-satz-radlagersatz-maxgear-hinterachse-2519-mg-33-0337.jpg)
- Radlager Satz Radlagersatz MAXGEAR Hinterachse 2519/MG 33-0337
- 1 pcs
- Negotiable