Small Screen

Screening equipment poses a problem most hydraulic cylinders never have to solve: the entire machine vibrates, continuously, by design. A vibrating screen throws its deck thousands of cycles a minute to size and separate material, and any cylinder mounted to it — setting deck angle, tensioning the screen media, working a feeder gate — lives inside that shaking. The load is often light, but the vibration is relentless, and it attacks a cylinder in ways that steady loads never do: fasteners back off, seals fret, and a cylinder that merely holds a position can slowly drift out of it.

So the design target here is holding position under vibration and surviving fatigue, not generating big force. Deck-angle and tensioning cylinders are typically set-and-hold, so the priority is a package that will not creep — locking or check-integrated designs that hold the setting even as the machine buzzes around them. Seal and bearing choices lean toward fretting and fatigue resistance, and mounting details get attention because vibration is unforgiving of anything loose. The abrasive fines and dust that come with screening make wiper selection matter as much as it does on any dusty machine.

This is a niche where the environment, not the load, writes the spec. We build screen and shaker cylinders to the print with packages chosen to hold under constant vibration and resist fatigue, and we reverse-engineer discontinued units where the screen's mounting is fixed. Every cylinder is pressure-tested before it ships, so it holds pressure before it ever has to hold a setting through a shift of shaking.

Representative applications

• Screen deck-angle adjustment cylinders
• Screen-media tensioning cylinders
• Feeder and grizzly gate cylinders
• Shaker discharge and diverter actuation
• Screen box lift and maintenance cylinders