The Track Roller — also known as Bottom Roller or Lower Roller — is a key undercarriage component installed beneath the track frame of Komatsu PC75 crawler excavators.
It supports the operating weight of the machine, guides the track chain movement and transfers loads evenly to the ground. During excavation, grading and travelling operations, the roller is exposed to continuous impact, vibration, mud, sand and abrasive materials.
A worn or damaged track roller can cause:
Our Komatsu PC75 track rollers are manufactured according to original dimensional requirements, providing a reliable aftermarket replacement solution for construction and earthmoving applications.
Designed for Komatsu PC75 crawler excavators, including PC75, PC75-1, PC75UU and related applications.
Available in:
to match different positions on the track frame.
Manufactured from high-strength 40Mn2 alloy steel, providing excellent resistance against impact loads and fatigue.
The roller tread surface is induction hardened to HRC 52-58, with controlled hardening depth of 5-10mm, improving wear resistance under harsh working conditions.
Equipped with heavy-duty floating oil seals and high-quality bushings to prevent lubricant leakage and protect internal components from mud, dust and water.
Factory filled with lubricant and sealed before delivery, reducing maintenance requirements.
Produced according to standard drawings with accurate dimensions, shaft diameter and mounting specifications for easy installation.
| Item | Specification / Detail |
|---|---|
| Machine Model | Komatsu PC75 Excavator |
| Compatible Models | PC75 / PC75-1 / PC75UU / PC75MR |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 201-30-00062 / 201-30-00210 / Confirm by serial number |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 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, earthmoving and landscaping operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 7-8 ton class excavator like Komatsu PC75, the undercarriage system directly affects machine stability, travelling performance and maintenance cost.
A high-quality track roller reduces vibration, prevents premature wear of track chains and improves overall machine uptime.
Every roller produced by our factory undergoes strict quality inspection, including:
With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible solutions with competitive pricing, stable quality and warranty support.
Contact us with your machine model, serial number, current OEM part number and roller position to confirm the correct replacement.
The Track Roller — also known as Bottom Roller or Lower Roller — is a key undercarriage component installed beneath the track frame of Komatsu PC75 crawler excavators.
It supports the operating weight of the machine, guides the track chain movement and transfers loads evenly to the ground. During excavation, grading and travelling operations, the roller is exposed to continuous impact, vibration, mud, sand and abrasive materials.
A worn or damaged track roller can cause:
Our Komatsu PC75 track rollers are manufactured according to original dimensional requirements, providing a reliable aftermarket replacement solution for construction and earthmoving applications.
Designed for Komatsu PC75 crawler excavators, including PC75, PC75-1, PC75UU and related applications.
Available in:
to match different positions on the track frame.
Manufactured from high-strength 40Mn2 alloy steel, providing excellent resistance against impact loads and fatigue.
The roller tread surface is induction hardened to HRC 52-58, with controlled hardening depth of 5-10mm, improving wear resistance under harsh working conditions.
Equipped with heavy-duty floating oil seals and high-quality bushings to prevent lubricant leakage and protect internal components from mud, dust and water.
Factory filled with lubricant and sealed before delivery, reducing maintenance requirements.
Produced according to standard drawings with accurate dimensions, shaft diameter and mounting specifications for easy installation.
| Item | Specification / Detail |
|---|---|
| Machine Model | Komatsu PC75 Excavator |
| Compatible Models | PC75 / PC75-1 / PC75UU / PC75MR |
| Part Type | Track Roller (Bottom Roller / Lower Roller) |
| OEM Part Number | 201-30-00062 / 201-30-00210 / Confirm by serial number |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Material | High-strength 40Mn2 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, earthmoving and landscaping operations |
| Shipping Note | Heavy component — sea freight recommended |
For a 7-8 ton class excavator like Komatsu PC75, the undercarriage system directly affects machine stability, travelling performance and maintenance cost.
A high-quality track roller reduces vibration, prevents premature wear of track chains and improves overall machine uptime.
Every roller produced by our factory undergoes strict quality inspection, including:
With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible solutions with competitive pricing, stable quality and warranty support.
Contact us with your machine model, serial number, current OEM part number and roller position to confirm the correct replacement.
