####x200B;####x200B;####x200B;####x200B;####x200B;####x200B;####x200B. How to measure a hydraulic cylinder####x200B;####x200B;####x200B;####x200B;####x200B;####x200B;####x200B. Hydraulic cylinder WTG 3x18 ---Bore: 3" ---Stroke: 18" ---OD: 3.75" ---Rod: 1.5" ---Retracted: 27" ---Extended: 45" ---Overall length: 28.81" ---Pin hole size: 1" ---Port size: SAE 8 ---Column Load: 21,000 Lbs ---Max Operating Pressure: 3500 PSI ---Color: Black.