Why do we use pneumatics?
Compressed air is widely used in the manufacturing facilities, and it’s also known as the fourth utility, after natural gas, electricity and water.
Comparatively to electricity, compressed air is slightly more expensive. But why is it that it’s widely used to initiate factory automation systems?
One of the reasons is the maintenance cost and lower upfront. Using pneumatics is also very cost-effective, reliable and simple to use.
The table below shows the advantages and differences between pneumatic, electric and hydraulic.
| Characteristics | Pneumatic | Hydraulic | Electric |
| Complexity | Simple | Medium | Medium/High |
| Peak power | High | Very high | High |
| Size | Low size / force | Very low size / force | Medium size / force |
| Position accuracy | Good | Good | Better |
| Control | Simple valves | Simple valves | Electronic controller |
| Speed | Fast | Slow | Fast |
| Purchase cost | Low | High | High |
| Operating cost | Medium | High | Low |
| Maintenance cost | Low | High | Low |
| Utilities | Compressor | Pump/power | Power only |
| Efficiency | Low | Low | High |
| Reliability | Excellent | Good | Good |
| Maintenance | Low | Medium | Medium |
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