Excavator Undercarriage Parts Drive Sprocket Compatible with Hitachi EX55
This high-performance sprocket is designed for Hitachi EX55 and compatible compact excavator models. Manufactured from premium alloy steel and heat-treated for extended wear resistance, it ensures smooth track engagement and reliable drive power under demanding 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.
This sprocket is engineered to fit the Hitachi EX55 series, delivering reliable torque transfer and accurate meshing with the track chain. Its compact but reinforced design makes it ideal for small to mid-sized excavators operating in tight urban spaces, landscaping jobs, and utility trenching. The sprocket teeth are precisely profiled to reduce friction and noise while extending both sprocket and chain life.
Besides EX55, this sprocket is also compatible with selected variants of EX40 and EX60 that share the same undercarriage layout. Please contact us to verify frame or pitch compatibility if you're working with a modified or regional model.
Robust Alloy Steel & Heat-Treated for Longevity
We uses wear-resistant 40Mn2 or 35MnB alloy steel, offering excellent strength and fatigue resistance. After forging and rough machining, the sprocket undergoes induction hardening on the tooth surface. This treatment increases hardness to HRC 52–58 while maintaining a tough, impact-absorbing core. This dual-layer structure ensures the sprocket performs well even under heavy load, high vibration, or muddy environments where debris can cause additional abrasion.
Precision Manufacturing Process
The ZX55 sprockets are manufactured using a standardized, multi-step process that ensures precision and quality at every stage:
Tooth Rough Machining
The sprocket blank is machined on a CNC lathe or gear hobbing machine to form the basic tooth profile.
Precision Machining
The inner ring is inserted and the entire part is precisely machined to ensure concentricity and dimensional accuracy.
Drilling
Mounting and lubrication holes are drilled to meet the installation and functional requirements.
Tooth Grinding & Finishing
After heat treatment, the sprocket teeth are ground or polished to remove burrs and ensure smooth engagement.
Surface Cleaning
The sprocket undergoes surface cleaning, removing scale and residue, preparing it for surface treatment.
Painting & Final Coating
The sprocket is coated with durable industrial paint (available in various colors), providing corrosion resistance and a clean, professional appearance.
Fitment Details & OEM Reference Numbers
This sprocket is compatible with:
Hitachi EX55 / EX55UR / EX55-2 / EX55SR
Potential compatibility with EX40 and EX60-1 (frame and pitch match required)
OEM part numbers include:
4283653, FH100588, 4360506
Custom fit available for special applications or modified chassis
If unsure, please contact us with your excavator’s serial number or drawing—we’ll verify fitment quickly.
Rigorous Quality Control for Reliable Field Performance
Every ZX55 sprocket undergoes strict inspection during and after production. We use hardness testing, runout tests, and surface profile verification to ensure every unit meets or exceeds OEM specifications. These measures reduce downtime and ensure long-term reliability in rugged environments.
Application Scenarios
Compact excavators like the EX55 are often used in landscaping, utility construction, urban renovation, and small-scale earthmoving. In these jobs, frequent direction changes and uneven terrain can strain the undercarriage. Our sprocket ensures precise tooth spacing and strong engagement, which helps stabilize the drive system and reduces energy loss.
Whether you're operating in soft soil or gravel-laden terrain, this sprocket will maintain consistent track movement without excessive vibration or noise.
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.
Inspection and Maintenance Tips
To ensure a long service life:
- Keep the sprocket and chain clean after each operation, especially when working in mud or sand.
- Regularly check for uneven tooth wear or sharp ridges.
- Replace worn sprockets together with track chains for optimal performance.
- Grease the mounting bolts and re-tighten periodically to avoid loosening under vibration.
Following these basic steps will help maximize uptime and reduce repair costs.
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.
