NITRA D-series heavy-duty air cylinders are interchangeable with other NFPA cylinders. Double-acting cylinders use aluminum components, including a magnetic piston fitted with a PTFE wear band. Magnetic piston can be used along with solid-state or reed switches for rod position sensing. With a maximum operating pressure of 250 psi, the series includes bores from 1½ to 4 in.; depending on bore, standard strokes range from 1 to 24 in.

They are also fitted with a Teflon-impregnated and hardcoat anodized heavy–duty external rod bearing to ensure smooth rod motion while maintaining rod rigidity and stability. Optional flange attachments, as well as nuts and rod clevises, are available.

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