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Selection

The Complete Book of Airpot - 11558 guidelines

continued be a function of its diameter andlength. Check the rod buckling curves (below) to determine the best size rod, considering the forces and length being used in the application.If the dashpot is damping in thepull direction, the rod’s yield strength is the main consideration. All Airpot connecting rods are capa- ble of withstanding any load applied in the tensile direction which does not exceed the force of atmospheric pressure on the piston. dard with rod end ball or pin link joints. Loops and rod eyes are useful forattachment with pins or shoulder screws and allow for rotational motion of the connected piece. When using either of these methods, some side motion should be afforded.Plain ends and threaded plainends are the least forgiving of mis- alignment unless there is some freedom of X and Z axis movement in the piece to which they are being attached (assuming piston travel is considered to be in the Yaxis).

RodEnd

selection

Mounting configurations. Choosingthe right rod end can greatly facilitate mounting as well as avoid friction and wear in the mechanism being damped. Standard choices are: plain end, loop or rod eye (depending on rod diame- ter), threaded ball joint, and threaded plain end. Ball joints are the most forgiving ofoff-axis alignments, allowing angular motion up to 30 degrees, (+/-15) and 360 degrees of rotation about the rod’s longitudinal axis. All dashpots come stan-
Two ball and socket joints compensate for parallel misalignment Two ball and socket joints compensate for angular misalignment Ball joint or pin joint used with loop or rod eye allows for rigid mounting of the cylinder and rod attached to a hinged assembly without bindingHinge Slide Slide Airpot Corporation (800) 848-7681 fax: (203) 849-0539 e-mail: sales@airpot.com www.airpot.com 8