... and Competitive Price 3, Professional Service Kobelco Excavator Hydraulic Cylinder, Piston Rod, Cylinder Head, Shaft Nut, Cushion Collar, Collar, ... , Oil tank rated pressure P;2, Cylinder barrel inner diameted (cylinder diameter)D3, Piston rod external diameter ( ... 20Mn2Standard: GB8713-88 High Quality Kobelco Excavator Hydraulic Cylinder, Piston Rod, Cylinder Head, Shaft Nut, Cushion Collar, Collar, ...