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.
- Triumph 70-8151 Gear Box Mainshaft Bearing "Hoffman" NOS NP3865
- 1 pcs
- Negotiable
- 821173 VALEO OE QUALITY CLUTCH KIT SET
- 1 pcs
- Negotiable
- 600021100 LUK OE QUALITY CLUTCH KIT SET
- 1 pcs
- Negotiable
- MAXGEAR 33-0523 3126/MG Radlagersatz
- 1 pcs
- Negotiable
- Suzuki GS1000 Bearing Gear 09265-25013 1980 1981
- 1 pcs
- Negotiable
- Fibrax Crimp Fit Metal Gear cable SP4 Ferrules - Bottle 200
- 1 pcs
- Negotiable
- Radlager Satz Radlagersatz NK 753617
- 1 pcs
- Negotiable
- Radlager Satz Radlagersatz FAG 713678950
- 1 pcs
- Negotiable
- 2x Radlagersatz 2 Radlagersätze MAXGEAR 33-0043
- 1 pcs
- Negotiable