The Carrier Roller, also known as Top Roller or Upper Roller, is mounted on the upper section of the track frame of the Komatsu PC200-8 crawler excavator.
Unlike the lower track rollers, the carrier roller does not directly carry the full machine weight. Its primary function is to support and guide the upper track chain, helping maintain correct track alignment and reduce friction during travelling.
A properly functioning carrier roller helps:
A worn or seized carrier roller may cause:
Our PC200-8 carrier rollers are manufactured using professional undercarriage production processes and are suitable for equipment dealers, distributors, repair workshops and fleet operators.
Designed specifically for compatible:
Komatsu PC200-8
Before ordering, the machine serial number or existing carrier roller should be checked to ensure the correct mounting configuration.
Manufactured from:
40Mn2 Alloy Steel
Providing:
The roller working surface is subjected to controlled heat treatment.
Typical specification:
This improves resistance to continuous track-chain contact and abrasive working conditions.
Equipped with:
The sealing system helps retain lubricant while protecting internal components from dust, mud and water contamination.
Manufactured with controlled:
Designed for bolt-on replacement when the correct configuration is selected.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Carrier Roller |
| Machine Model | Komatsu PC200-8 |
| Compatible Models | PC200-8 |
| Machine Type | Crawler Excavator |
| Machine Class | Approx. 20 Ton |
| OEM Part Number | Confirm by machine serial number |
| Material Grade | 40Mn2 Alloy Steel |
| Manufacturing Process | Forging / Casting + CNC Machining |
| Heat Treatment | Induction Hardening |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm-10mm |
| Seal System | Heavy-duty Floating Oil Seal |
| Lubrication System | Lifetime Internal Lubrication |
| Bearing Structure | Hardened Shaft + Wear-resistant Bushing |
| Quality Inspection | Dimension, Hardness and Sealing Inspection |
| Mounting | OEM-Style, Bolt-on Direct Replacement |
| Application | Construction / Mining / Earthmoving |
| Shipping Note | Heavy Component — Sea Freight Recommended |
The Carrier Roller, also known as Top Roller or Upper Roller, is mounted on the upper section of the track frame of the Komatsu PC200-8 crawler excavator.
Unlike the lower track rollers, the carrier roller does not directly carry the full machine weight. Its primary function is to support and guide the upper track chain, helping maintain correct track alignment and reduce friction during travelling.
A properly functioning carrier roller helps:
A worn or seized carrier roller may cause:
Our PC200-8 carrier rollers are manufactured using professional undercarriage production processes and are suitable for equipment dealers, distributors, repair workshops and fleet operators.
Designed specifically for compatible:
Komatsu PC200-8
Before ordering, the machine serial number or existing carrier roller should be checked to ensure the correct mounting configuration.
Manufactured from:
40Mn2 Alloy Steel
Providing:
The roller working surface is subjected to controlled heat treatment.
Typical specification:
This improves resistance to continuous track-chain contact and abrasive working conditions.
Equipped with:
The sealing system helps retain lubricant while protecting internal components from dust, mud and water contamination.
Manufactured with controlled:
Designed for bolt-on replacement when the correct configuration is selected.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Carrier Roller |
| Machine Model | Komatsu PC200-8 |
| Compatible Models | PC200-8 |
| Machine Type | Crawler Excavator |
| Machine Class | Approx. 20 Ton |
| OEM Part Number | Confirm by machine serial number |
| Material Grade | 40Mn2 Alloy Steel |
| Manufacturing Process | Forging / Casting + CNC Machining |
| Heat Treatment | Induction Hardening |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm-10mm |
| Seal System | Heavy-duty Floating Oil Seal |
| Lubrication System | Lifetime Internal Lubrication |
| Bearing Structure | Hardened Shaft + Wear-resistant Bushing |
| Quality Inspection | Dimension, Hardness and Sealing Inspection |
| Mounting | OEM-Style, Bolt-on Direct Replacement |
| Application | Construction / Mining / Earthmoving |
| Shipping Note | Heavy Component — Sea Freight Recommended |
