D9R BULLDOZER TRACK ROLLER FROM TACK

In heavy-duty operations such as mining and large-scale earthmoving projects, the Caterpillar D9R bulldozer has become an industry benchmark for its superior earthmoving capabilities and stability. As the core load-bearing component of its undercarriage, the design and performance of the D9R's rollers directly impact the durability and uptime of the entire machine. The following are the product's core features:

Strengthened Materials and Heat Treatment
The D9R track roller utilizes a forged wheel body made of “40Mn2 high-hardenability round steel”, utilizing a dual heat treatment process of "quenching and tempering + medium-frequency surface hardening." This process maintains internal toughness while significantly improving the wear resistance of the contact surface.

Patented Seal
The floating oil seal is made of high chromium and high molybdenum alloy (hardness HRC65-72), which can maintain sealing integrity even in mud immersion or high dust conditions.Modular Structural Design

The track rollers utilize a split iron and copper bushing combination (iron bushing material: HT250), secured to the wheel body by bolts. This design not only reduces manufacturing costs but also facilitates targeted replacement of worn parts, significantly reducing maintenance downtime.

TACK is committed to building a stable chassis for construction machinery. We provide D9R track roller and complete chassis that meet strict standards and provide superior quality.