The Carrier Roller, also known as Top Roller or Upper Roller, is mounted above the track frame of the Komatsu PC200-7 crawler excavator.
Its primary function is to support the upper track chain and maintain correct chain alignment while the machine is travelling. By keeping the track chain properly positioned, the carrier roller helps reduce friction, vibration and unnecessary wear throughout the undercarriage system.
A worn or seized carrier roller may result in:
Our PC200-7 carrier rollers are manufactured using professional undercarriage production processes and are suitable for equipment dealers, distributors, repair workshops and fleet operators.
Compatible with:
Komatsu PC200-7
The exact mounting configuration should be confirmed using the machine serial number or existing carrier roller before ordering.
Manufactured from:
40Mn2 Alloy Steel
Providing:
The roller working surface is subjected to controlled heat treatment.
Typical specification:
This improves resistance against continuous track-chain contact and abrasive working environments.
Equipped with:
The sealed structure helps retain lubricant and protect internal components against 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 PC200-7 |
| Compatible Models | PC200-7 |
| 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 Configuration | OEM Standard |
| Installation | 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 above the track frame of the Komatsu PC200-7 crawler excavator.
Its primary function is to support the upper track chain and maintain correct chain alignment while the machine is travelling. By keeping the track chain properly positioned, the carrier roller helps reduce friction, vibration and unnecessary wear throughout the undercarriage system.
A worn or seized carrier roller may result in:
Our PC200-7 carrier rollers are manufactured using professional undercarriage production processes and are suitable for equipment dealers, distributors, repair workshops and fleet operators.
Compatible with:
Komatsu PC200-7
The exact mounting configuration should be confirmed using the machine serial number or existing carrier roller before ordering.
Manufactured from:
40Mn2 Alloy Steel
Providing:
The roller working surface is subjected to controlled heat treatment.
Typical specification:
This improves resistance against continuous track-chain contact and abrasive working environments.
Equipped with:
The sealed structure helps retain lubricant and protect internal components against 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 PC200-7 |
| Compatible Models | PC200-7 |
| 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 Configuration | OEM Standard |
| Installation | Bolt-on Direct Replacement |
| Application | Construction / Mining / Earthmoving |
| Shipping Note | Heavy Component — Sea Freight Recommended |
