Fluid Power Journal

Air Teaser: Find the Cylinder Rod

By Ernie Parker, CFPAI, CFPSD, CFPS, CFPMM, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPE.

What is the maximum theotretical efficiency for extension and retraction?

How many standard cubic feet per minute are wasted?

What is the cost of the wasted air for a year at $.50 per 1,000 standard cubic feet working 24/7?


1″ x 6″ x 5/8″ (25.4 mm x 152.4 mm x 15.875 mm) cylinder

Extend and hold 2 seconds
Retract and hold 2 seconds
Dwell 6 seconds

Load 39.27 lbs.,
174.67 N extend force
0 load on retract

Hoses are 1/4″ x 10′
(3.05 meters) long

See the Solution

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