Doosan Track Roller
Maintain maximum chassis stability and eliminate field downtime with precision-engineered Doosan track rollers from ShengAn. Designed specifically for demanding earthmoving, quarrying, and mining applications, our Doosan bottom rollers (lower rollers) deliver superior load-bearing strength, precise rail alignment, and exceptional resistance to harsh ground wear.
Available in both single-flange and double-flange configurations, our lower rollers are precision-forged from high-density alloy steel, deep induction-hardened, and fitted with lifetime dual-cone floating seals. Whether you manage a fleet of DX-series diggers or classic DH-series machines, we provide direct OEM-fit replacement rollers at competitive factory wholesale prices.
Why Choose ShengAn Track Rollers for Doosan Machinery?
Doosan excavators are renowned for high breakout forces and rigorous operating cycles. To match this mechanical intensity, the bottom roller must support the machine's heavy operating weight while guiding the track chain smoothly along the track frame.
At ShengAn excavator parts factory, we manufacture Doosan lower rollers to exact OEM dimensional tolerances and metallurgical standards, preventing early shell wear, seal leaks, and sudden track derailment:
- Forged Alloy Steel Shells: Precision-forged alloy steel roller bodies absorb heavy shock impacts and resist structural cracking or deformation under full payload stress.
- Deep Induction Hardening (HRC 52–58): Heat-treated to create a thick, wear-resistant outer hardness layer (8mm–12mm depth), maintaining a resilient inner core to handle high operational vibration.
- Lifetime Dual-Cone Seals: Fitted with heat-resistant floating oil seals and high-durability rubber O-rings that maintain internal oil lubrication while blocking mud, water, and sand ingress.
- Micro-Finished Shafts & Bushings: Micro-finished internal shafts paired with heavy-duty bronze bushings minimize rotation friction, heat buildup, and power loss during travel.
Explore Related Doosan Undercarriage Components
To ensure even undercarriage wear and extend the overall working life of your track group, we recommend inspecting and replacing related components alongside your track rollers. Browse our full range of Doosan undercarriage parts:
- Doosan track rollers : View bottom roller for Doosan crawler excavators.
- Doosan Carrier Rollers: Top guide rollers to support track chain tension and eliminate rail sag.
- Doosan Front Idlers: Heavy-duty guide wheels designed to absorb front impact loads.
- Doosan Drive Sprockets: Precision-machined drive wheels and bolt-on segment groups.
- Doosan Track Chains & Links: Sealed and lubricated track chains (SALT) for extreme terrain.
Complete Doosan Model Compatibility (DX & DH Series)
We stock a comprehensive inventory of single-flange and double-flange lower track roller excavator tailored for Doosan mini excavators, medium diggers, and heavy mining machines, including:
- Doosan Mini & Compact Series: DX27, DX35, DX55, DX60, DX80
- Doosan Medium Excavator Series: DX140, DX180, DX225, DX255, DX300, DH150, DH220, DH225
- Doosan Heavy Mining Series: DX340, DX380, DX420, DX480, DX520, DH370, DH420
Technical Specifications Overview
| Feature / Parameter | Technical Specification |
| Product Category | Doosan Excavator Track Rollers (Bottom / Lower Rollers) |
| Roller Flange Options | Single-Flange / Double-Flange Configurations |
| Shell Material | Forged 40Mn2 / High-Strength Alloy Steel |
| Surface Hardness | HRC 52–58 (Induction Hardened Layer) |
| Hardness Depth | 8mm – 12mm (Optimized by roller dimensions) |
| Seal Mechanism | Lifetime Dual-Cone Floating Oil Seals |
| Working Warranty | 2,000 Hours / 12 Months Standard Coverage |
Doosan Track Rollers FAQ
Q: What is the difference between single-flange and double-flange Doosan track rollers?
A: Single-flange rollers are installed near the sprocket and front idler to guide the track chain into position. Double-flange rollers are positioned along the center of the track frame to lock the chain in line, preventing side-slip and derailment on uneven ground.
Q: How do I verify exact fitment for my Doosan excavator model?
A: You can confirm fitment by providing your Doosan excavator's exact model number (e.g., DX225LCA), serial number, or the original OEM part number. Our technical team will verify mounting hole dimensions, flange type, and shaft length prior to shipment.
Q: Do you offer bulk wholesale prices and OEM customization for Doosan parts?
A: Yes. Excavator undercarriage parts supplier serves regional machinery parts distributors, fleet owners, and repair facilities worldwide with factory-direct pricing, flexible MOQs, custom packaging, and private label options.