Product Specifications

Premium DX225 Forged Idler Wheel for Mining Applications: Engineered with High-Density Steel for Superior Impact Resistance and Extreme Wear Durability

1. Overview & Function

The DOOSAN DX225 Forged Front Idler Group is a critical undercarriage component designed for Doosan DX225 crawler excavators. This heavy-duty assembly ensures proper track alignment, reduces wear on sprockets and rollers, and maintains optimal track tension for smooth operation.

Key Features:

✔ Forged Steel Construction – Superior strength & durability vs. cast idlers
✔ Precision-Machined – Ensures exact fitment for Doosan DX225 models
✔ Sealed & Lubricated Bearings – Extended service life with minimal maintenance
✔ Corrosion-Resistant Finish – Protects against rust in harsh environments

2. Technical Specifications

Dimensions & Design:

• Bolt Pattern: 6-bolt flange (verify exact PCD measurement)

• Shaft Diameter: 70–80mm (varies by model year)

• Width: Matches DX225 track chain specifications (~500–600mm)

• Weight: Approximately 50–70 kg (depends on exact configuration)

Material & Manufacturing:

• High-Carbon Forged Steel – Heat-treated for maximum wear resistance

• Hardened Wearing Surfaces – Reduces friction with track chain links

• Precision-Balanced – Minimizes vibration for smoother operation

Compatibility:

• Primary Model: Doosan DX225 (all variants, including DX260LC)

• Cross-Reference: May fit similar Doosan excavators (verify with serial number)

3. Signs of a Worn or Failing Idler

⚠ Track Misalignment – Uneven wear on track pads or links
⚠ Excessive Noise – Grinding or squeaking from the front undercarriage
⚠ Visible Damage – Cracks, flat spots, or seized bearings
⚠ Track Wobble – Excessive side-to-side movement beyond 3mm

4. OEM vs. Aftermarket Options

OEM (Doosan Genuine Part)

✔ Guaranteed Fit & Performance
✔ Extended Warranty Coverage
✔ Available Through Authorized Doosan Dealers

Premium Aftermarket Alternatives

✔ Cost-Effective (30–50% cheaper than OEM)
✔ Brands: DPW PARTS, cqctrack.
✔ Must Verify: Shaft diameter, bolt pattern, and width

5. Where to Buy – Trusted Suppliers

OEM Sources:

🔹 DoosanPort (Official Parts Portal) – www.hangongmachinery.com
🔹 Authorized Doosan Dealers – Worldwide distribution

Aftermarket Suppliers:

🔹 Undercarriage Supply Co. (U.S.-based)
🔹 TrackShop Europe (Global shipping)
🔹 Alibaba/Amazon (Search: "DOOSAN DX225 Forged Idler")

6. Installation & Maintenance Tips

Installation Steps:

1. Relieve Track Tension – Use the adjuster to loosen the track.

2. Remove Old Idler – Unbolt and extract carefully.

3. Inspect Seals & Bearings – Replace if damaged.

4. Install New Idler – Torque bolts to manufacturer specs (~250–300 Nm).

5. Re-Tension Track – Adjust to proper sag (typically 20–30mm).

Maintenance Best Practices:

✔ Regularly Check Track Tension
✔ Inspect for Cracks or Bearing Play
✔ Clean Debris from Undercarriage