The Track Roller — also known as Bottom Roller or Lower Roller — is a critical undercarriage component installed beneath the track frame of Doosan DX225 crawler excavators.
The bottom roller carries the machine operating weight, supports the track chain and keeps the crawler system aligned during travelling and excavation operations.
For a 22-ton class excavator, track rollers operate under heavy working conditions:
A worn or damaged track roller may cause:
Our Doosan DX225 track rollers are manufactured according to OEM-style drawings and heavy-duty production standards, providing reliable aftermarket replacement solutions for construction companies, equipment dealers and repair workshops.
Designed for:
Reference OEM numbers:
Available configurations:
Suitable for different positions on the track frame.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on installation without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Doosan DX225 Excavator |
| Compatible Models | DX225 / DX225LC / DX225LCA / DX225LC-3 / DX225LC-7 |
| Machine Class | 22 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 200104-00021 / 200104-00044 / 2270-1098 / K1037713A |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 Alloy Steel |
| Manufacturing Method | Forging / Casting / Precision Machining |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 8mm - 12mm |
| Sealing | Heavy-duty floating oil seal, lifetime lubricated |
| Mounting | OEM standard, bolt-on direct replacement |
| Application | Construction, mining and earthmoving operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 22-ton class excavator like Doosan DX225, undercarriage parts directly influence machine productivity and operating cost.
A reliable track roller helps:
Every roller produced by our factory undergoes strict inspection:
With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible replacement solutions with stable quality, competitive pricing and warranty support.
Contact us with your machine model, serial number, OEM part number and roller position to confirm the correct replacement.
The Track Roller — also known as Bottom Roller or Lower Roller — is a critical undercarriage component installed beneath the track frame of Doosan DX225 crawler excavators.
The bottom roller carries the machine operating weight, supports the track chain and keeps the crawler system aligned during travelling and excavation operations.
For a 22-ton class excavator, track rollers operate under heavy working conditions:
A worn or damaged track roller may cause:
Our Doosan DX225 track rollers are manufactured according to OEM-style drawings and heavy-duty production standards, providing reliable aftermarket replacement solutions for construction companies, equipment dealers and repair workshops.
Designed for:
Reference OEM numbers:
Available configurations:
Suitable for different positions on the track frame.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on installation without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Doosan DX225 Excavator |
| Compatible Models | DX225 / DX225LC / DX225LCA / DX225LC-3 / DX225LC-7 |
| Machine Class | 22 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 200104-00021 / 200104-00044 / 2270-1098 / K1037713A |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 Alloy Steel |
| Manufacturing Method | Forging / Casting / Precision Machining |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 8mm - 12mm |
| Sealing | Heavy-duty floating oil seal, lifetime lubricated |
| Mounting | OEM standard, bolt-on direct replacement |
| Application | Construction, mining and earthmoving operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 22-ton class excavator like Doosan DX225, undercarriage parts directly influence machine productivity and operating cost.
A reliable track roller helps:
Every roller produced by our factory undergoes strict inspection:
With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible replacement solutions with stable quality, competitive pricing and warranty support.
Contact us with your machine model, serial number, OEM part number and roller position to confirm the correct replacement.
