These cylinder families cover general linear actuation, adjustable end cushioning and applications that require guidance against rotation. The installation drawing determines whether a replacement will fit the existing clevis, brackets, ports and position sensors.
Models and selection data
| Model or series | Published configuration or function | Selection details |
|---|---|---|
| QGS | Standard cylinder family | Confirm bore, stroke, mount, cushion arrangement and dimensions for the exact configuration. |
| QGB | Double-acting, single-rod cylinder with adjustable cushioning | Confirm cushion adjustment access, load and speed at the end of travel. |
| QGSD | ISO 15552 cylinder family as cataloged | Check the drawing for the mounting pattern, rod thread and accessory fit. |
| MGP / MGG | Guided cylinders | Verify slide or ball guide availability, permissible moments and port location. |
| CXS / CXSW | Twin-cylinder family and through-rod family | Check rod clearance, guiding requirements and usable travel. |
| STM | Pneumatic slide with magnetic piston | Specify position switch type and the locations to be detected. |
| QGJ / QGD | Clamping cylinder and thin-profile cylinder families | Check fixture geometry, available mounting depth and reaction loads. |
Sizing the cylinder
Start with force at the machine and air pressure at the cylinder while it is moving. On a single-rod, double-acting cylinder, the effective piston area is smaller on retraction. Allow for friction and pressure loss through the valve and tubing. For long compression strokes, check rod buckling and how the load is supported.
Guidance and cushioning
A guided cylinder is useful when an attachment creates an offset load or a twisting moment. Check the permitted load, moment and speed for the selected bore and stroke. End cushioning must also suit the moving mass. Include the cylinder drawing and any switch or bracket part numbers when ordering a replacement.