Double-acting, cushioned - inch & ISO series, bore and stroke to spec.
A pneumatic air cylinder converts compressed air into linear thrust - the standard actuation method for linear valve gates, dampers and general push/pull automation.
We supply the Duncan range across two families: the ISO 6431/6432 and VDMA 24562 square-tube series for interchangeable, standardised bores from 12mm to 100mm, and the inch-series midget-to-medium-bore range with a full set of mounting styles.
Standard cylinders per ISO 6431/6432 and the German VDMA 24562 standard - interchangeable across compliant brands.
VDMA/ISO square-tube cylinder, magnetic piston option. Meets VDMA 24562 and ISO 6431 standard specifications.
Reed-switch fitted cylinder for external position sensing - same VDMA/ISO body, add-on switch brackets.
Miniature-bore ISO 6432 cylinder - light-weight, sleek construction for compact circuits.
IllustrationSpring-return inch-series cylinder for simple push or pull duty.
IllustrationTwo cylinder bodies coupled back-to-back for a three-position, dual-stroke output.
Two pistons on a common rod inside one body - doubles thrust within the same bore diameter.
Rod extends from both ends of the cylinder body - for applications needing output on both sides.
Larger-bore cylinder for proportional opening/closing applications, e.g. damper positioning.
Linear cylinder matched to knife gate valve stroke - used on cement, ash and bulk-material gates.
They are near-equivalent standards - ISO 6431 (now largely superseded by ISO 15552) is the international standard, VDMA 24562 is the German equivalent. Cylinders built to either are broadly interchangeable across compliant manufacturers on mounting and port dimensions.
Yes - the VDMA/ISO square-tube series is available with a magnetic piston and matching reed switches for end-of-stroke or intermediate position feedback.
Send the duty, media and sizing you have - we target a quote inside 24 hours.
