Simplex 5 Ton R53 Spring Return Single Act 3 Stroke Hydraulic Ram Cylinder USA. R53 Simplex 5-Ton Spring Return S/A 3.13 Stroke Hydraulic Cylinder. Brand New, made in USA. General purpose single acting hydraulic cylinder with a powerful pre-tensioned spring for quick retraction. Features a plated solid plunger with a hardened grooved saddle. If there’s something you’re not sure about or have a question about anything, just send us a message by clicking “Ask a question” below the listing.