The Track Roller — also known as Bottom Roller or Lower Roller — is a critical load-bearing component installed beneath the track frame of Hitachi EX400 crawler excavators.
For a 40-ton class excavator, track rollers operate under extremely high static and dynamic loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during excavation, loading and travelling operations.
During mining and heavy construction work, the rollers are continuously exposed to:
A worn or damaged track roller may result in:
Our Hitachi EX400 track rollers are manufactured according to OEM-style drawings, providing reliable aftermarket replacement solutions for heavy-duty crawler excavators.
Designed for:
Suitable for:
Available configurations:
Suitable for different installation positions on the track frame.
Manufactured from:
40Mn2 / 50Mn alloy steel
Advantages:
The roller tread surface is induction hardened:
Provides excellent resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Allows direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Hitachi EX400 Excavator |
| Compatible Models | EX400 / EX400LC |
| Class | 40 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 9153155 / 9153156 / Confirm by serial number |
| 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 Hitachi EX400, undercarriage components are among the highest-cost wear parts during machine operation.
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 load-bearing component installed beneath the track frame of Hitachi EX400 crawler excavators.
For a 40-ton class excavator, track rollers operate under extremely high static and dynamic loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during excavation, loading and travelling operations.
During mining and heavy construction work, the rollers are continuously exposed to:
A worn or damaged track roller may result in:
Our Hitachi EX400 track rollers are manufactured according to OEM-style drawings, providing reliable aftermarket replacement solutions for heavy-duty crawler excavators.
Designed for:
Suitable for:
Available configurations:
Suitable for different installation positions on the track frame.
Manufactured from:
40Mn2 / 50Mn alloy steel
Advantages:
The roller tread surface is induction hardened:
Provides excellent resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Allows direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Machine Model | Hitachi EX400 Excavator |
| Compatible Models | EX400 / EX400LC |
| Class | 40 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 9153155 / 9153156 / Confirm by serial number |
| 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 Hitachi EX400, undercarriage components are among the highest-cost wear parts during machine operation.
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.
