PC200 bottom roller

production of a Komatsu PC200 bottom roller (track roller) involves a controlled manufacturing process designed to ensure high strength, wear resistance, and long service life under heavy load conditions.

It starts with high-grade alloy steel materials such as 50Mn or 40MnB. The roller body is formed through forging or casting, followed by rough machining to shape the shell. After that, the components undergo heat treatment and induction hardening to achieve a hard outer surface (typically HRC 52–58) while keeping a tough inner core to resist cracking.

Next, precision CNC machining is used to ensure accurate dimensions and smooth rolling surfaces. The internal parts (shaft, bushings, seals) are assembled carefully, followed by oil filling and sealing installation to prevent leakage and contamination.

Finally, each bottom roller is subjected to quality inspection, rotation testing, and leak testing, then finished with anti-rust coating and painting before packaging for shipment.

In short, the PC200 bottom roller is produced through forging, heat treatment, precision machining, assembly, testing, and surface finishing to ensure durability in heavy construction environments.