Page 18 - Pneumatic ebook (2)_draft 13 sept 2021
P. 18
Disadvantages of pneumatics:
1. Preparation: Compressed air requires good preparation where air has to be filtered in
many stages to remove dirt and condensates.
2. Speed: It is difficult to achieve uniform and constant piston speed because air is
compressible.
3. Force requirement: Compressed air is only economical under the normal working
pressure of 600 to 700 kPa (6 to 7 bar).
4. Noise level: The exhaust air is loud (noise). However, this problem has now been
largely solved by the development of sound absorption material and silencers.
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INTRODUCTION TO PNEUMATIC SYSTEM 4
