Perform Under PressurePowerMax tie-rod type hydraulic cylinders have heat-treated shafts and precision machined pistons and caps for extended cylinder life. Series PML cylinders provide working pressure to 2,500 psi, Series PMH cylinders to 3000 psi. It has a ductile iron rod clevis threaded 360° for a full contact area, and a positive set screw locking device helps the cylinders withstand continuous high loads.