The Track Roller — also known as Bottom Roller or Lower Roller — is one of the most important undercarriage components installed beneath the track frame of Komatsu PC1000 crawler excavators.
For a 100-ton class mining excavator, each track roller operates under extreme loading conditions. It carries a large portion of the machine weight, supports the track chain and maintains crawler stability during excavation and travelling operations.
PC1000 excavators are widely used in:
The track roller operates under severe conditions:
A worn track roller may cause:
Our Komatsu PC1000 track rollers are manufactured according to OEM-style drawings and heavy-duty production standards, providing reliable aftermarket solutions for mining fleets and large equipment contractors.
Designed for:
Suitable for extreme mining environments.
Available configurations:
Suitable for different track frame positions.
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 PC1000 Excavator |
| Compatible Models | PC1000 / PC1000-6 / PC1000-7 / PC1000-8 |
| Machine Class | 100 Ton Mining Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 21N-30-00020 / 21N-30-00021 / 21N-30-00023 |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 / 50Mn Alloy Steel |
| Manufacturing Method | Forging / Casting / Precision 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 |
| Shipping Note | Heavy component — sea freight recommended |
For a mining-class excavator like Komatsu PC1000, undercarriage reliability directly affects production efficiency and operating cost.
A high-quality track roller helps:
Every roller manufactured by our factory undergoes strict inspection:
With professional manufacturing capability for heavy 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 one of the most important undercarriage components installed beneath the track frame of Komatsu PC1000 crawler excavators.
For a 100-ton class mining excavator, each track roller operates under extreme loading conditions. It carries a large portion of the machine weight, supports the track chain and maintains crawler stability during excavation and travelling operations.
PC1000 excavators are widely used in:
The track roller operates under severe conditions:
A worn track roller may cause:
Our Komatsu PC1000 track rollers are manufactured according to OEM-style drawings and heavy-duty production standards, providing reliable aftermarket solutions for mining fleets and large equipment contractors.
Designed for:
Suitable for extreme mining environments.
Available configurations:
Suitable for different track frame positions.
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 PC1000 Excavator |
| Compatible Models | PC1000 / PC1000-6 / PC1000-7 / PC1000-8 |
| Machine Class | 100 Ton Mining Excavator |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 21N-30-00020 / 21N-30-00021 / 21N-30-00023 |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 / 50Mn Alloy Steel |
| Manufacturing Method | Forging / Casting / Precision 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 |
| Shipping Note | Heavy component — sea freight recommended |
For a mining-class excavator like Komatsu PC1000, undercarriage reliability directly affects production efficiency and operating cost.
A high-quality track roller helps:
Every roller manufactured by our factory undergoes strict inspection:
With professional manufacturing capability for heavy 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.
