Sprocket Rim
A sprocket, sprocket-wheel or chainwheel is a wheel with profiled teeth that mesh with a chain, track, or other perforated or indented material. The term'sprocket' refers to any wheel with radial projections that engage a chain passing over it. It differs from a gear in that sprockets are never directly meshed together, and it differs from a pulley in that sprockets have teeth and pulleys are smooth, with the exception of timing pulleys used with toothed belts.
Sprockets are used to convey rotary motion between two shafts where gears are inefficient or to impart linear motion to a track, tape, or other similar device in bicycles, motorcycles, tracked vehicles, and other machines. The most common form of sprocket on a bicycle is one with a large sprocket-wheel on the pedal shaft that drives a chain that drives a small sprocket on the axle of the rear wheel. A sprocket and chain mechanism was also used to power early automobiles, a method that was significantly influenced by bicycles.
Sprockets are available in a number of different designs, each claiming to be the most efficient. A flange is not usually found on sprockets. Flanges on some timing belt sprockets keep the timing belt centered. Sprockets and chains are also employed to transfer power from one shaft to another in situations where slippage is prohibited, with sprocket chains substituting belts or ropes and sprocket wheels replacing pulleys. They can be run at high speeds, and certain chains are engineered to be quiet even when running at high rates.
chain sprocket wheel images
As for the gaint constraction machines, there is also a track system down there. Big chain sprocket, of course, will be a little different set in that sysstem.
The sprocket in a crane, it is different from what it is in excavator. The picture below is the sprocket in bulldozer. It is not hard for you to recognize the difference. One sprocket is made up by several parts to reduce the cost once any small part is broken you can just replace with a small part.
