Zax230 Zax240 Zax240-3G Zax250-3 Zax240-3 Excavator Arm Boom Bucket Hydraulic Cylinder for Hitachi
Product Description
Product Name |
Excavator Hydraulic Cylinder |
Model |
Zax230 Zax240 Zax240-3G Zax250-3 Zax240-3 |
Warranty |
1 Year |
OEM |
yes |
Quality |
High Quality |
Our Advantages
Cylinder Rod |
High-frequency surface hardening with hardness up to 55, plus hard chromium plating for superior wear resistance. |
Cylinder Tube |
Made from 25Mn steel, offering excellent durability and anti-wear performance. |
Cylinder Heads |
Constructed from high-strength hardened steel for maximum durability. |
Seals |
Use of premium seals from Japan NOK and US SKFF to enhance sealing performance and prevent leaks. |
Hydraulic Cylinder Maintenance Tips
To ensure optimal performance and extend the lifespan of your hydraulic cylinders, consider the following maintenance guidelines:
1.Check Hydraulic Oil Quality
Always verify that the hydraulic oil in the system meets the required specifications. The oil should be clean and free from contamination. If there are signs of impurities, filter or replace the oil promptly to avoid damage to internal components.
2.Monitor Operating Hours and Replace Seals as Needed
Keep track of your cylinder's working hours. Once the service time exceeds 6,000 hours, it is advisable to inspect and replace the seals to maintain sealing performance and prevent leaks.
3.Inspect Installation and Alignment on Filter-Related Cylinders
For cylinders used in filter systems, clean any sludge buildup from the filter plates regularly. Also, observe the piston rod's motion-if it appears misaligned or tilted during extension and retraction, adjustment is necessary to prevent uneven wear or mechanical failure.
4.Ensure Proper System Design for High-Pressure Cylinders
To protect high-pressure hydraulic cylinders, it's recommended to include both air-bleed valves and pressure relief mechanisms during system design. These additions help prevent pressure build-up and improve overall safety and reliability.
Product Parameters
ZAX230 ZAX240 ZAX240-3G ZAX250-3 ZAX240-3 arm cylinder rod |
105 |
ZAX230 ZAX240 ZAX240-3G ZAX250-3 ZAX240-3 arm cylinder tube |
140 |
ZAX230 ZAX240 ZAX240-3G ZAX250-3 ZAX240-3 boom cylinder rod |
90 |
ZAX230 ZAX240 ZAX240-3G ZAX250-3 ZAX240-3 boom cylinder tube |
125 |
ZAX230 ZAX240 ZAX240-3G bucket cylinder rod |
90 |
ZAX230 ZAX240 ZAX240-3G ZAX250-3 ZAX240-3 bucket cylinder tube |
130 |
ZAX250-3 ZAX240-3 arm cylinder rod |
100 |
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Product Display

Company Profile
Guangzhou GuoLi Engineering Machinery Co., Ltd. is a professional manufacturer and supplier specializing in excavator hydraulic parts. As a high-tech enterprise, we integrate R&D, production, and technical consulting to provide complete solutions for the construction machinery industry.
Our product line includes hydraulic cylinders, cylinder component, hydraulic pumps,hydraulic control valve,complete diesel engine, solenoid valves, and other excavator spare parts, covering brands such as Caterpillarr, Komatsuu, Volvoo, Hitachii, Hyundaii, Doosann, and more. With over 16 years of experience and a skilled R&D and sales team, we have built a solid reputation for quality and service among clients both domestically and internationally.
Whether you need standard components or customized hydraulic solutions, GuoLi is ready to support your project. We welcome OEM and ODM collaborations and are happy to turn your ideas into reliable products that meet your expectations.
PRODUCTION PROCESS

Other Cylinders
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Let us know your needs, and our team will assist you with suitable options and a fast quotation.
FAQ
Q. What is the delivery time ?
A. Once the payment is done, we will arrange the goods within 3-7 days; if not in stock, we will inform you at the first time.
Q. If I only know the excavator model, but can not offer parts No.,what should I do ?
A. Please send the pictures, we will recheck for you .
Q. How can you guarantee the quality?
A. 100% test before delivery
Q. How long will it take to delivery to my address?
A. Usually goods can be sent by express, about 5-7 working days .
Q: What's package?
A. Usually be packed by plastic and carton ,also we can pack goods according to your needs.