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EX550LCE Hydraulic Bucket Cylinder for Hitachi Excavator | PN:4356853 | Premium Aftermarket Replacement
1. Basic Product Info
This heavy-duty aftermarket hydraulic bucket cylinder is engineered as a fully compatible replacement for Hitachi EX550LCE large excavators. As a core component of the working attachment hydraulic system, it drives the bucket to perform digging, material collection, and unloading operations with precision and power. It is widely applied in large-scale infrastructure construction, stone quarrying, bulk earthmoving, and open-pit mining projects. All products are manufactured in strict compliance with Hitachi OEM design standards, featuring identical installation dimensions, pin hole spacing, and hydraulic port configurations. On-site installation can be completed via direct bolt-on fitting without any cutting, welding, or additional structural modifications.
| Item |
Specification |
| Product Name |
Hydraulic Bucket Cylinder |
| Applicable Model |
Hitachi EX550LCE Excavator |
| OEM Part Number |
4356853 |
| Product Grade |
Brand New High-Quality Aftermarket |
| Warranty |
12 months against manufacturing defects |
| MOQ |
1 unit, ample stock for immediate delivery |
| QC Standard |
ISO9001 certified, full hydraulic pressure and cyclic tests before shipment |
2. Core Technical Parameters
| # |
Part No. |
Description |
Qty |
|
4356853 |
CYL. |
1 |
| 1 |
0679901 |
. TUBE; CYL. ASS'Y |
|
| 1A |
---- |
.. TUBE; CYL. |
1 |
| 1B |
0392602 |
.. BUSHING; PIN |
|
| 2 |
0679902 |
. ROD; PISTON ASS'Y |
1 |
| 2A |
---- |
.. ROD; PISTON |
1 |
| 2B |
0392602 |
.. BUSHING; PIN |
|
| 3 |
0679903 |
. HEAD; CYL. |
|
| 4 |
988681 |
. BUSHING |
1 |
| 5 |
4067131 |
. PACKING; U-RING |
1 |
| 6 |
0667106 |
. RING; WIPER |
|
| 7 |
0166005 |
. O-RING |
|
| 8 |
0679904 |
. RING; BACK-UP |
|
| 9 |
0159811 |
. O-RING |
|
| 10 |
0679905 |
. PISTON |
|
| 11 |
0224106 |
. RING; SEAL ASS'Y |
|
| 12 |
0679906 |
. RING; SLIDE |
|
| 13 |
0310511 |
. NUT |
|
| 14 |
0309011 |
. SCREW; SET |
|
| 15 |
0111707 |
. BALL; STEEL |
|
| 17 |
J75481 |
. FITTING; GREASE |
|
| 50 |
4384450 |
KIT; SEAL |
1 |
| Spec Item |
Data |
| Bore Diameter |
145mm |
| Piston Rod Diameter |
95mm |
| Working Stroke |
1650mm |
| Rated Working Pressure |
31.4MPa |
| Factory Test Pressure |
47.1MPa (1.5 times the rated working pressure) |
| Barrel Material |
High-tensile seamless alloy steel with precision inner honing |
| Piston Rod |
40CrMo heat-treated steel, 28~32μm hard chrome plating, HRC68~72 for superior wear resistance and anti-deformation performance |
| Matching Seal Kit PN |
4356853K |
| Working Temperature |
-25℃ ~ +85℃ |
| Structure |
Double ear lugs with quenched copper wear bushings, built-in buffer device to reduce impact during operation |
3. Product Advantages
- Perfect OEM Compatibility: All structural dimensions and assembly details match the original Hitachi part precisely, connecting seamlessly with bucket linkages and hydraulic pipelines to ensure stable performance during long working hours.
- Heavy-Load Optimized Design: The cylinder barrel and connection lugs adopt thickened reinforcement design to withstand extreme dynamic loads and harsh working conditions commonly found in mining and large construction sites, significantly extending service life.
- Stringent Quality Assurance: Each finished cylinder undergoes rigorous full-stroke cycle testing and high-pressure airtight inspections to completely eliminate the risk of internal and external oil leakage.
- Exceptional Cost Efficiency: It delivers the same operational reliability and durability as genuine Hitachi components, helping maintenance teams and spare parts distributors reduce recurring purchasing costs effectively.
- Flexible Shipping Options: In-stock items can be dispatched within 3 working days. Air freight is available for urgent orders, while sea freight is the most economical choice for bulk purchases.
4. Supplier Brief
Our manufacturing facility has specialized in designing and producing hydraulic cylinders for Hitachi EX series large excavators for over a decade. We offer a complete range of boom, arm, and bucket cylinders for EX550LCE and other popular Hitachi models. Backed by mature production technology and strict quality control systems, our products are exported to aftermarket markets in Africa, Southeast Asia, the Middle East, and other regions, earning consistent praise from global customers.
5. FAQ
Q1: Can this bucket cylinder be used on Hitachi EX550-5 or EX550LC-5 excavator models?
A: Yes. This cylinder is fully compatible with EX550LCE, EX550-5, and EX550LC-5 models as they share the same hydraulic system specifications and mounting dimensions for the bucket cylinder.
Q2: Does the standard package include the matching seal repair kit?
A: The seal repair kit is not included in standard products. You can order the dedicated repair kit separately, and we will offer a competitive rate for combined orders.
Q3: What packaging is used for long-distance overseas sea transportation?
A: Anti-rust oil is injected into the cylinder interior, and anti-rust grease is applied on the piston rod surface. The entire unit is wrapped with waterproof PE film and packed in heavy-duty export plywood cases to ensure safe transit.
Q4: Are there preferential prices for purchasing a full set of working device cylinders?
A: Yes. Customers who purchase complete cylinder sets (boom, arm, and bucket) will enjoy tiered discounts. We also provide consolidated shipment service to help reduce logistics costs.
Q5: What support is available if oil leakage occurs within the warranty period?
A: Please take clear photos of the leaking area and provide the excavator serial number. We will arrange free seal replacement and professional remote technical guidance promptly to resolve the issue.
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