AutomationDirect's Nitra pneumatic product line now includes D-Series heavy-duty air cylinders suitable for applications where abusive conditions are a concern. Nitra D-series heavy-duty pneumatic air cylinders are interchangeable with other popular brands of NFPA cylinders. The heavy-duty double-acting cylinders are constructed with high quality aluminum components, including a magnetic piston fitted with a PTFE wear band. The magnetic piston can be used along with solid-state or reed switches for rod position sensing. The cylinders 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. With a maximum operating pressure of 250 psi, this series includes bore sizes from 1 ½ inch up to 4 inches; depending on bore size, available stroke lengths range from one inch to 24 inches. Optional flange attachments, as well as nuts and rod clevises, are available.