

With years of experience in hydraulic piston rod manufacturing, we provide customer satisfaction through both manufacturing and customization.
At Bos, we care about you and your company. We specialize in hydraulic piston rod customization, material selection, and manufacturing, and provide exceptional service tailored to your needs.




The robustness of our Hydraulic Cylinder Piston Rods makes them indispensable across a breathtakingly diverse industrial landscape. In the construction sector, they are the muscle behind excavators, bulldozers, and cranes, enduring shock loads and harsh environmental conditions. The agricultural industry relies on them for the repetitive, high-force cycles of tractors and combines. In manufacturing, they drive the automation in press lines, plastic injection molding machines, and material handling equipment. From the giant locks of dam gates to the precise movements in forestry machinery and mining equipment, our Hydraulic Cylinder Piston Rods are trusted to perform where it matters most.


Unmatched Material Integrity: We begin with superior materials, employing induction hardening and quenching and tempering (Q&T) processes to achieve an optimal balance of a incredibly hard surface and a tough, shock-absorbent core. This prevents bending, cracking, and premature wear.
Precision Chromium Plating: Our state-of-the-art hard chrome plating process is our crown jewel. We achieve a coating that is exceptionally thick, uniform, and pore-free. This provides an unparalleled barrier against corrosion and abrasion, significantly extending the service life of both the rod and the cylinder seals.
Peerless Surface Finish: The substrate upon which we plate is as important as the chrome itself. Our precision grinding and polishing techniques result in a mirror-like surface finish (often achieving Rz < 1.5 µm). This ultra-smooth finish minimizes friction, reduces seal wear, and prevents contaminant ingress, ensuring leak-free operation for longer periods.
Exceptional Straightness and Dimensional Accuracy: Every Hydraulic Cylinder Piston Rod we produce is subjected to rigorous checks for straightness and concentricity. This precision machining ensures perfect alignment within the cylinder, eliminating uneven wear and maximizing the efficiency of the entire hydraulic system.

This can be caused by insufficient oil pressure, internal leakage, or excessive resistance. Check for low oil pressure, internal leaks at seals , or the piston rod being subject to excessive lateral loads
Ensure the axis of the hydraulic cylinder is aligned with the movement direction. The load should act along the cylinder axis to avoid eccentricity, which can cause premature wear and seizure
Seals can leak due to folding, squeezing, tearing, wear, aging, or deterioration. In such cases, the seal should be replaced