| Unlike air blasting, shot blasting does not use compressed air as the power for injecting abrasive |
| media. The shot blasting uses motor rotation to rotate blades at a high speed. Abrasive media |
| are forcibly fed to the blades and injected at high speed by the blade rotation. |
| The injection unit is normally called a "rotor" (sometimes called an impeller). There is a big difference |
| between shot and air blasting. Shot blasting injects a far larger amount of abrasive media with less |
| power. A comparison of the injection processes between one nozzle with a three-horsepower |
| compressor and one rotor with a three-horsepower motor shows that shot blasting injects abrasive |
| media 50 to 100 times that of air blasting per minute. (The value will vary depending on condition.) |
