Piston As. 539-1738

Piston As. 539-1738

Excavator    Caterpillar    323,395

Bucket Cylinder    Bore    120,00    Stroke    1.104,00    Hydraulic Cylinder

5391738

Compatible Brand: Caterpillar

Part Number: 539-1738 (5391738)

Superseded / Interchange Numbers: 539-1738, 5391738

Part Name: Excavator Bucket Cylinder Piston Assembly

Technical Specifications: Bore: Fits 120.00 mm / Stroke: Fits 1,104.00 mm Cylinder / Weight: Not Specified (Heavy-Duty)

Compatible Machinery: Caterpillar Hydraulic Excavators (323, 395 series)

What It Does:

Serves as the internal piston assembly mounted on the end of the piston rod inside the bucket hydraulic cylinder on Caterpillar 323 and 395 series hydraulic excavators. It divides the cylinder barrel into two distinct pressure chambers, converting hydraulic fluid pressure into linear mechanical force to actuate bucket extension and retraction cycles.

Importance:

Critical for converting hydraulic fluid power into mechanical breakout force while maintaining strict internal sealing between the cylinder chambers. Manufactured from high-strength alloy steel and equipped with heavy-duty piston seals and wear guide bands, it prevents internal fluid bypass under extreme system pressures, ensuring maximum bucket digging force and reliable operation during heavy excavation and quarrying.

As Seçkin Makine, we manufacture this product as an aftermarket item fully equivalent to the original specifications in terms of raw materials, technical dimensions, and performance characteristics. This product comes with a 1-year warranty from the invoice date.