Doosan DH55 track roller Excavator undercarriage parts

DH55 track roller Product Description

• Place of Origin: Fujian, China
• Condition: New
• Packing: Wooden case, Pallet
• Material: Alloy Steel or Steel
• Warranty: 1 Years
• Sample: Available
• Size: Standard
• Color: Customer’s Request
• Logo: Customer’s Request
• Technical: Forging and Casting
• OEM:Avaliable
• Packaging Details: in wooden case or fumigate pallet
• Port: Xiamen Port
• Supply Ability: 50000 Pieces / Month

DH55 track roller Products Details

• Wheel body: Made of 40Mn2 round steel with good hardenability through forging; heat treatment process of quenching and tempering + medium-frequency surface quenching ensures its strength and wear resistance.
• Shaft: Made of 45# round steel, with heat treatment process of quenching and tempering + medium-frequency surface quenching, surface hardness HRC52-60, hardened layer depth 3-6mm, with excellent comprehensive performance.
• Floating oil seal: Made of high-chromium and high-molybdenum alloy. Hardness HRC65-72, working surface roughness 0.1uM - 0.2uM.
• O-ring: Made of nitrile rubber raw material produced by copolymerization of butene and acrylonitrile, with better oil resistance and high-temperature resistance.

Key advantages

1. Cost‑Effective & Simple Design
Simpler structure with only one guiding flange reduces manufacturing complexity and cost, offering an affordable undercarriage solution without sacrificing basic performance.

2. Lightweight & Low Friction
Lighter than double‑flange rollers, it lowers overall machine weight and reduces rolling resistance, helping to save fuel and improve traveling efficiency.

3. Space‑Saving & Compact Fit
The single‑side flange design fits narrower track frames and tight installation spaces, ideal for the PC60’s compact undercarriage layout.

4. Smooth Track Movement on Flat Terrain
Offers less track restriction than double‑flange types, enabling freer track rotation and smoother operation on flat, stable ground (e.g., standard construction sites).

5. Durable & Reliable
Made of high‑strength forged steel with heat treatment (HRC 50–58) and robust sealing, it ensures long service life and reliable performance in muddy, dusty or gravel conditions.

6. Easy Installation & Maintenance

OEM‑precision dimensions enable direct replacement and straightforward installation. The simplified structure also makes inspection and maintenance easier.

DH55 track roller Applications

Track rollers are core components of excavator undercarriages, essential for the normal operation of excavators in various scenarios.

They are widely used in construction sites, mining areas, road construction, bridge engineering, and agricultural land reclamation.

Whether it is earthmoving, excavation, loading, or leveling, our track rollers provide reliable support for excavators, ensuring efficient and stable operation of the equipment.

They are also suitable for maintenance and replacement of old undercarriage parts, helping customers reduce equipment downtime.