The Carrier Roller, also known as Top Roller or Upper Roller, is mounted above the track frame of the Hitachi EX30 crawler excavator.
Its main function is to support and guide the upper section of the track chain, keeping the track properly aligned during travelling. The carrier roller also helps reduce friction between the moving track chain and the track frame.
A worn or damaged carrier roller may cause:
Our EX30 carrier rollers are manufactured using professional undercarriage production processes and provide a reliable aftermarket replacement solution for equipment dealers, repair workshops and machine owners.
Designed for:
Hitachi EX30
Suitable for:
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 sealed structure helps prevent lubricant leakage and protects 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 | Hitachi EX30 |
| Compatible Models | EX30 |
| Machine Type | Mini Excavator |
| Machine Class | Approx. 3 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 / Landscaping / Earthmoving |
| Shipping Note | Small Component — Air or Sea Freight Available |
The Carrier Roller, also known as Top Roller or Upper Roller, is mounted above the track frame of the Hitachi EX30 crawler excavator.
Its main function is to support and guide the upper section of the track chain, keeping the track properly aligned during travelling. The carrier roller also helps reduce friction between the moving track chain and the track frame.
A worn or damaged carrier roller may cause:
Our EX30 carrier rollers are manufactured using professional undercarriage production processes and provide a reliable aftermarket replacement solution for equipment dealers, repair workshops and machine owners.
Designed for:
Hitachi EX30
Suitable for:
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 sealed structure helps prevent lubricant leakage and protects 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 | Hitachi EX30 |
| Compatible Models | EX30 |
| Machine Type | Mini Excavator |
| Machine Class | Approx. 3 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 / Landscaping / Earthmoving |
| Shipping Note | Small Component — Air or Sea Freight Available |
