The Track Roller — also known as Bottom Roller or Lower Roller — is a critical load-bearing component installed beneath the track frame of Komatsu PC400 crawler excavators.
For a 40-ton class excavator, track rollers work under extremely high static and dynamic loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during digging, loading and travelling operations.
PC400 excavators are widely used in:
During operation, the track roller is exposed to:
A worn or damaged track roller may cause:
Our Komatsu PC400 track rollers are manufactured according to OEM-style drawings and production standards, providing reliable aftermarket replacement solutions for heavy-duty applications.
Designed for:
Suitable for construction, mining and heavy-duty excavation operations.
Available configurations:
Suitable for different positions on the track frame.
Manufactured from:
40Mn2 / 50Mn alloy steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Komatsu PC400 Excavator |
| Compatible Models | PC400 / PC400LC / PC400-5 / PC400-6 / PC400-7 / PC400-8 |
| Machine Class | 40 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 208-30-00210 / 208-30-00230 / 208-30-00415 |
| Reference Number | KM1743 |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 / 50Mn Alloy Steel |
| Manufacturing Method | Forging / Casting / Machining |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm - 10mm |
| Sealing | Heavy-duty floating oil seal, lifetime lubricated |
| Mounting | OEM standard, bolt-on direct replacement |
| Application | Mining, quarrying and heavy construction operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 40-ton class excavator like Komatsu PC400, undercarriage components represent one of the largest maintenance investments throughout the machine lifecycle.
A reliable track roller helps:
Every roller produced by our factory undergoes strict quality 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 load-bearing component installed beneath the track frame of Komatsu PC400 crawler excavators.
For a 40-ton class excavator, track rollers work under extremely high static and dynamic loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during digging, loading and travelling operations.
PC400 excavators are widely used in:
During operation, the track roller is exposed to:
A worn or damaged track roller may cause:
Our Komatsu PC400 track rollers are manufactured according to OEM-style drawings and production standards, providing reliable aftermarket replacement solutions for heavy-duty applications.
Designed for:
Suitable for construction, mining and heavy-duty excavation operations.
Available configurations:
Suitable for different positions on the track frame.
Manufactured from:
40Mn2 / 50Mn alloy steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Komatsu PC400 Excavator |
| Compatible Models | PC400 / PC400LC / PC400-5 / PC400-6 / PC400-7 / PC400-8 |
| Machine Class | 40 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 208-30-00210 / 208-30-00230 / 208-30-00415 |
| Reference Number | KM1743 |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 / 50Mn Alloy Steel |
| Manufacturing Method | Forging / Casting / Machining |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm - 10mm |
| Sealing | Heavy-duty floating oil seal, lifetime lubricated |
| Mounting | OEM standard, bolt-on direct replacement |
| Application | Mining, quarrying and heavy construction operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 40-ton class excavator like Komatsu PC400, undercarriage components represent one of the largest maintenance investments throughout the machine lifecycle.
A reliable track roller helps:
Every roller produced by our factory undergoes strict quality 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.
