Durable Upper Carrier Roller for Hitachi EX100 Excavator
This high-quality carrier roller is specially designed for the Hitachi EX100 excavator. Engineered to guide and support the upper section of the track chain, it ensures proper tension, reduces vibration, and protects undercarriage components during continuous operation.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
Understanding the Function of Carrier Rollers in EX100 Excavators
Carrier rollers — also known as upper rollers — are installed on the top of the track frame and support the top portion of the track chain. Their job is not to bear the full weight of the machine (unlike track rollers), but rather to maintain track tension, reduce sagging, and ensure smooth track circulation.
For compact-to-medium-sized machines like the Hitachi EX100, the carrier roller is essential for maintaining proper track alignment in uneven terrain or repetitive travel operations, enhancing both efficiency and operator comfort.
Understanding the Function of Carrier Rollers in EX100 Excavators
Our EX100 carrier roller is manufactured based on OEM standards to ensure 100% fitment and performance. It is suitable for:
Hitachi EX100 / EX100-1 / EX100-2 / EX100-3 / EX100-5
Compatible with EX120 in certain configurations
Before ordering, please verify dimensions or send us your machine serial number for confirmation.
Material Composition and Performance Engineering
Premium Materials
- Roller Body: High-strength alloy steel (50Mn, 40Mn2), forged and quenched for superior toughness.
- Shaft: Precision-machined 40Cr steel, surface-hardened to HRC52–58 for excellent wear resistance.
- Seals: High-quality floating seals with anti-dust rings to prevent oil leakage and extend service life.
Advanced Production Standards
Our factory adopts a CNC machining process with tight tolerances. From forging to final assembly, every step follows strict quality standards:
Forging → CNC Machining → Hardening → Seal Assembly → Quality Testing → Painting & Packaging
These steps ensure a carrier roller that operates smoothly and remains reliable under load.
Heat Treatment
Machining Process
CNC turning and milling ensure dimensional accuracy
Packing
Secure wooden crate packaging for safe delivery
OEM Undercarriage Parts for Hitachi
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| HITACHI-EX/ZAX/ZX | EX30 | EX40 | EX55 | EX60 | EX60-2 | EX60-3 | EX60-5 | EX70 |
| EX75 | EX100 | EX100-3 | EX100-5 | EX120 | EX120-1 | EX120-3 | EX120-5 | |
| EX130-1 | EX200-1 | EX200-2 | EX200-3 | EX200-5 | EX200LC-1 | EX200LC-2 | EX200LC-3 | |
| EX200LC-5 | EX220-3 | EX220-5 | EX270 | EX270-1 | EX270-2 | EX270-5 | EX270LC-1 | |
| EX270LC-2 | EX270LC-5 | EX300 | EX300-1 | EX300-2 | EX300-3 | EX300-5 | EX300A | |
| EX300LC-1 | EX300LC-2 | EX300LC-3 | EX300LC-5 | EX330 | EX370 | EX400-1 | EX400-2 | |
| EX400-3 | EX400-5 | EX400LC-1 | EX400LC-2 | EX400LC-3 | EX400LC-5 | EX450 | EX450-1 | |
| EX450-2 | EX450-3 | EX450-5 | EX450LC-1 | EX450LC-2 | EX450LC-3 | EX450LC-5 | UH07-7 | |
| ZAX30 | ZAX55 | ZAX200 | ZAX200-2 | ZAX330 | ZAX450-1 | ZAX450-3 | ZAX450-5 | |
| ZX30 | ZX33 | ZX38U | ZX40 | ZX55 | ZX60 | ZX70 | ZX75US | |
| ZX120 | ZX130 | ZX160LC | ZX200 | ZX210 | ZX240 | ZX270 | ZX330 | |
| ZX360 | ZX400 | ZX450 | ZX470 | ZX500 | ZX650 | ZX850 | ZX870 | |
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Key Benefits of Using Our EX100 Carrier Roller
Upgrading your EX100 upper rollers brings significant advantages:
- Enhances track guidance and prevents derailment
- Reduces track chain sag and surface friction
- Lowers overall vibration for operator comfort
- Minimizes premature wear on sprockets and links
- OEM-fit, no modifications required
Unlike track rollers which endure direct ground pressure, the upper roller ensures track shape consistency and travel precision — an important factor in performance.
Maintenance Tips to Extend the Service Life of Upper Rollers
To get the most out of your EX100 carrier rollers:
- Clean the upper rollers of mud and debris daily
- Check for free rotation and grease status during maintenance
- Replace immediately if leakage, unusual noise, or cracks are found
- Use recommended lubricants and greasing intervals
Proper maintenance reduces stress on the entire undercarriage and saves costly future repairs.
Frequently Asked Questions (FAQ)
Can this roller be used for EX120 or EX100-5?
Yes, depending on configuration. Please check your OEM part number or consult us with machine serial number.
Is this a load-bearing roller?
No. The carrier roller is not designed to support machine weight; it maintains track alignment and tension.
Do you offer anti-rust or color customization?
Yes, black or yellow anti-corrosion coatings are available. Custom branding is also supported.
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
