Excavator Hydraulic Bucket Arm Cylinder For KOMATSU PC120 PC200 PC240 PC360

How to measure your cylinder:

Our size is standard, there is a certain tolerance in the data.Before placing an order,

verify the correct size.

Provide the size you need, we can customize.

About Our Company
We are a professional high-tech enterprise with 12 years of manufacturing experience, specializing in high-quality excavator hydraulic cylinders.

Our factory integrates R&D, production, and technical support, focusing on precision engineering and durability. We are committed to delivering reliable excavator parts, including hydraulic cylinders, hydraulic pumps, oil seals, breaker hammers, and solenoid valves.

Our products are widely exported to Africa, Southeast Asia, the Middle East, South America, and Eastern Europe, including countries like Brazil, Egypt, Indonesia, Vietnam, Russia, and the UAE.

Backed by a skilled R&D and sales team, we have earned strong trust and positive feedback from customers worldwide.

✅ Customization Available
✅ Fast Delivery
✅ OEM/ODM Support

We look forward to long-term cooperation and becoming your trusted hydraulic solution partner.

Hydraulic Cylinder Manufacturing Process

Our factory operates with advanced semi-automatic production lines and strict quality control to ensure each hydraulic cylinder meets OEM standards. The production process includes:

1. Precision CNC Cutting
   High-strength steel plates are laser-cut with CNC machines to ensure accuracy and consistent material strength.

2. Welding & Assembly
   Experienced technicians perform precision welding on cylinder barrels, bases, and heads using automatic welding stations.

3. Heat Treatment
   All core components undergo high-temperature quenching to improve hardness and wear resistance.

4. CNC Machining
   Cylinder rods are machined and threaded using CNC lathes to ensure perfect alignment and smooth operation.

5. Polishing & Chrome Plating
   The rod surfaces are finely polished and hard chrome plated for corrosion resistance and extended service life.

6. Grinding & Honing
   Inner cylinder walls are honed to precise tolerances to ensure smooth piston movement and pressure sealing.

7. Assembly & Testing
   All parts are assembled in dust-free environments. Each cylinder undergoes 100% pressure testing to detect leakage, stroke deviation, and performance under load.

   

   Warehouse

   We operate a well-organized warehouse with a large inventory of excavator hydraulic parts, including cylinders, pumps, valves, and seals.
   With ample stock and efficient logistics, we ensure fast delivery to meet urgent orders and global demand.

   
   

   

   

FAQ – Frequently Asked Questions

Q1: What excavator models are these hydraulic cylinders compatible with?
A1: Our hydraulic cylinder assemblies are compatible with KOMATSU excavators, specifically PC120, PC200, PC240, and PC360. They are designed to match original dimensions and specifications, ensuring a perfect fit for your bucket or arm application.

Q2: What components are included in the hydraulic cylinder assembly?
A2: Each excavator hydraulic cylinder assembly includes a piston rod, cylinder tube, end caps, and high-quality seals. All parts are manufactured with precision to ensure smooth operation and durability under heavy loads.

Q3: What materials are used for the piston rod and cylinder tube?
A3: We use 42CrMo alloy steel for both piston rod and cylinder tube. The piston rod is hard chrome plated to resist corrosion and wear, while the cylinder tube is honed for high-precision performance.

Q4: Are these hydraulic cylinders suitable for OEM replacement?
A4: Yes. Our cylinders are OEM-compliant replacement parts for KOMATSU excavators. They are manufactured according to strict quality standards and are widely used in global aftermarket applications.

Q5: Can you provide customized hydraulic cylinders?
A5: Absolutely. We support custom hydraulic cylinders tailored to your size, stroke, or mounting requirements. Just provide your technical drawings or sample, and we will deliver a solution.

Q6: What is the typical working pressure of your hydraulic cylinders?
A6: Our cylinders are built to handle working pressures between 16–25 MPa, depending on the model. They are designed for heavy-duty applications and long service life.

Q7: Do you offer international shipping and after-sales service?
A7: Yes. We export to Africa, Southeast Asia, the Middle East, South America, and more. Our experienced team provides full technical support, and we ensure safe packaging and fast delivery worldwide.

Q8: Why choose your hydraulic cylinders for excavators?
A8:

• • ✅ Over 12 years of manufacturing experience

  • ✅ Use of high-strength materials and precision machining

  • ✅ Compatible with KOMATSU PC120 / PC200 / PC240 / PC360

  • ✅ Support OEM & customized solutions

  • ✅ Export-quality assurance and competitive prices