Upper Roller for Hitachi ZAX240 / ZX240 Excavator Undercarriage System
Our upper roller for the Hitachi ZAX240 / ZX240 excavator is engineered to support the upper portion of the track chain, helping maintain track alignment and reducing wear. Designed for mid-to-heavy-duty applications, this upper roller ensures smooth operation across various terrains while offering extended service life and excellent resistance to harsh job site conditions.
| 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.
Function of the Upper Roller in ZX240 Undercarriage System
Carrier rollers play a crucial role in keeping the excavator's track aligned and elevated. Positioned at the top of the undercarriage, they support the upper track chain and prevent sagging during movement.
This is especially important on the ZX240, which operates in demanding environments such as construction, slope excavation, and earthmoving. A durable and well-aligned carrier roller helps improve track tension, enhances ride stability, and protects lower components from premature wear caused by improper track positioning.
OEM Compatibility for Hitachi ZX240 and ZAX240
This upper roller is designed to match the original specifications of:
Hitachi ZAX240 / ZX240
Fully compatible with undercarriage assemblies conforming to Hitachi standard track frame design for ZX series
We also support OEM replacement with private labeling and custom branding for bulk orders.
Durable Material Composition and Precision Engineering
The roller body and shaft are forged using wear-resistant alloy steel such as 50Mn and 40Cr, ensuring durability under repeated load cycles. The bushing is made of quenched alloy steel for high surface hardness, while the floating seal system keeps contaminants out and lubricant in — even under muddy or sandy conditions.
The entire roller is heat-treated to a controlled depth, achieving surface hardness between HRC 52–58, balancing toughness with crack resistance. With precise machining and surface grinding, each roller guarantees long-lasting performance and reliable upper track support.
Manufacturing Process for ZX240 Carrier Roller
This component undergoes a strict production workflow:
- Raw steel forging and CNC turning
- Heat treatment for body and shaft
- Precision machining and surface polishing
- Floating seal assembly with grease fill
- Final inspection for size, seal tightness, and rotation smoothness
Each unit is tested for tolerance and sealing performance before packaging.
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.
Advantages of Our Carrier Roller for ZX240 Excavators
Compared to many aftermarket options, our ZX240 carrier rollers offer:
- Excellent resistance to wear, shock, and corrosion
- Improved grease retention with premium floating seals
- Direct OEM-fit replacement for quick installation
- Extended life in extreme environments like gravel pits, slopes, and marshes
- Optional logo engraving and paint customization
These advantages translate into reduced maintenance needs, lower downtime, and long-term cost savings for your fleet.
Application Scenarios for ZX240 Carrier Roller
This product is suitable for a wide range of mid-to-heavy-duty operations, including:
- Road and bridge excavation
- Urban utility trenching
- Quarry and aggregate hauling
- Slope stabilization and earthworks
Maintaining proper upper track alignment during these tasks not only extends the life of the track chain but also reduces operator fatigue caused by vibration and imbalance.
Maintenance Advice for ZX240 Upper Roller
To ensure peak performance of the carrier roller:
- Clean the roller area regularly to prevent buildup
- Check seals for grease leakage
- Monitor roller rotation — abnormal resistance may indicate internal wear
- Replace as a set if multiple rollers show uneven wear
Even though the carrier roller doesn’t bear the full weight like the bottom rollers, it plays a vital role in keeping the entire undercarriage efficient and stable.
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.
