Basis for piston rod
design
The piston rod in a pneumatic cylinder will act as a strut when
it is subjected to a compressive load or it exerts a thrust.
Therefore the rod must be of sufficient diameter to prevent
buckling. Euler’s strut theory is used to calculate a suitable
piston rod diameter to withstand buckling.
Because of area ratio the pressure on bore end could be
reduced.
Causes for slow or
erratic motion of actuator
- Insufficient control pressure for valves
- Misadjusted or malfunctioning servo amplifier
- No lubrication of machine ways or linkage
- Malfunctioning feedback transducer
- Worn or damaged cylinder or motor
- Sticking servo valve
