Double Acting Excavator Hydraulic Cylinder

1) Short Introduction: 

We supply all kinds of hydraulic cylinders for excavator including Boom cylinder, Arm cylinder and Bucket cylinder, which are applicable for Catepillar, Komatsu. Hitachi, Doosan, Volvo, Hyundai, Kobelco, Sumitomo, Kato, Beijing etc. We also can supply the cylinder parts to our customers such as the cylinders, rod pistons, cylinders, headcylinders, plungers, nuts, etc. 

2) Features of hydraulic cylinder: 

Steady performance, high durability

3) Production technology and specification: 

We use the cold draw seamless steel tubes with strong honing technique. Length of the cylinder can reach up to 3m with diameter from Ø40~Ø400. The piston rods are made of 40Cr with treatment of quality adjustment followed by high frequency quenching and then hard chrome plating, which makes it flexible inside and hard outside with high smooth surface. The piston rod's adopt quality NOK seals and diameters are from Ø5~Ø140. The quality of our cylinder is ensured by high-pressure test bed. 

4) details of our productions

Maximum Stroke: 530mm

Working Pressure: 6.4Mpa
Max Testing Pressure: 20.6Mpa
Load Range: 5~8 Ton
Chrome Thickness: 0.01mm/0.05mm
Roundness of Cylinder Inner Hole: 0.01mm
Straightness of Cylinder Inner Hole: 0.02/1000
Roughness of Cylinder Inner Hole: Ra<0.2

Photos: 

Eye mounted hydraulic cylinders without out cover: