The Track Roller — also known as Bottom Roller or Lower Roller — is a critical load-bearing component installed under the track frame of Caterpillar CAT E330 crawler excavators.
For a 30-ton class excavator, track rollers operate under extremely high working loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during digging, loading and travelling operations.
During heavy-duty applications, the roller is exposed to:
A worn or damaged track roller may cause:
Our CAT E330 track rollers are manufactured according to OEM-style drawings, providing a reliable aftermarket replacement solution for construction, mining and earthmoving applications.
Designed for:
Reference OEM numbers:
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 | Caterpillar CAT E330 Excavator |
| Compatible Models | E330 / 330B / 330C / 330 Series |
| Class | 30 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 117-5047 / 134-1013 / 150-3987 / 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 | Construction, mining and earthmoving operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 30-ton class excavator like CAT E330, undercarriage components represent a significant percentage of machine maintenance costs.
A high-quality 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 under the track frame of Caterpillar CAT E330 crawler excavators.
For a 30-ton class excavator, track rollers operate under extremely high working loads. They support the machine weight, guide the track chain and distribute ground pressure evenly during digging, loading and travelling operations.
During heavy-duty applications, the roller is exposed to:
A worn or damaged track roller may cause:
Our CAT E330 track rollers are manufactured according to OEM-style drawings, providing a reliable aftermarket replacement solution for construction, mining and earthmoving applications.
Designed for:
Reference OEM numbers:
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 | Caterpillar CAT E330 Excavator |
| Compatible Models | E330 / 330B / 330C / 330 Series |
| Class | 30 Ton Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 117-5047 / 134-1013 / 150-3987 / 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 | Construction, mining and earthmoving operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 30-ton class excavator like CAT E330, undercarriage components represent a significant percentage of machine maintenance costs.
A high-quality 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.
