مكان المنشأ:
الصين
اسم العلامة التجارية:
Belparts
إصدار الشهادات:
CE
رقم الموديل:
345Cl
More Branded Accessories are Available
| Hydraulic Parts | Hydraulic Pump | Final Drive | Travel Reduction |
| Swing Motor | Swing Reduction | Control Valve | Gear Parts |
| Slew Bearing | Engine Assembly | Hydraulic Cylinder | ECU |
345CL Hydraulic Boom Cylinder | PN:242-6838 / 225-4526 | Premium Aftermarket Replacement
Product Overview
This heavy-duty boom hydraulic cylinder serves as a drop-in aftermarket replacement engineered exclusively for 345CL large construction and mining excavators. As the primary load-bearing hydraulic component of the front working attachment, it handles boom lifting, lowering, and sustained heavy load retention for large-scale quarry rock excavation, open-pit ore hauling, highway mass earthmoving, and major infrastructure development jobs. It is widely stocked by heavy equipment repair specialists, large excavation rental fleets, and cross-border spare parts dealers focusing on CL series heavy machinery.
Manufacturing strictly follows original OEM engineering blueprints. Pin pitch, mounting lug thickness, hydraulic port layout, and bushing inner diameters all match dual OEM part numbers 242-6838 and 225-4526 with zero dimensional deviation. No field cutting, grinding, or welding alterations are needed during installation, drastically slashing machine downtime and labor costs during maintenance.
Basic Product Information Sheet
| Item | Detailed Info |
|---|---|
| Full Product Name | Boom Hydraulic Cylinder Complete Assembly |
| Compatible Excavator | 345CL Large Excavator |
| Interchangeable OEM Part Numbers | 242-6838, 225-4526 |
| Product Grade | Brand-new mining-grade aftermarket hydraulic cylinder |
| Quality Warranty | 12-month coverage against all factory manufacturing defects |
| Minimum Order Quantity | 1 unit, abundant in-house stock for immediate dispatch |
| Quality Control Standard | ISO9001 full production traceability; 100% high-pressure leak test & long-stroke cyclic fatigue testing prior to shipment |
Core Engineering Technical Parameters
| Technical Index | Standard Value |
|---|---|
| Cylinder Tube Inner Bore | 154 mm |
| Hard Chrome Plated Piston Rod Diameter | 100 mm |
| Total Effective Working Stroke | 1600 mm |
| Standard Rated System Working Pressure | 31.4 MPa |
| Factory Hydraulic Burst Proof Test Pressure | 47.1 MPa (1.5x rated load for comprehensive leak detection) |
| Cylinder Barrel Raw Material | Ultra-high tensile seamless alloy steel with precision deep honing to deliver low-friction, wear-resistant inner walls |
| Piston Rod Surface Treatment | 40CrMo quenched & tempered base substrate, 30–35μm thick hard chrome coating, surface hardness HRC68–72, outstanding scratch and impact resistance for harsh mine environments |
| Matching Dedicated Seal Kit Part No. | 242-6838K |
| Safe Operating Temperature Range | -25℃ ~ +85℃ |
| Special Structural Design | Extra-thick integrated heavy-duty lifting lugs paired with oversized self-lubricating copper alloy bushings; dual-stage built-in buffer system to absorb violent shock loads during frequent heavy lifting cycles at mining sites |
Unique Product Competitive Advantages
Both 242-6838 and 225-4526 factory part codes correspond to this identical boom cylinder assembly. Every connection dimension aligns perfectly with genuine components, seamlessly mating the original boom linkages and hydraulic piping. It eliminates misalignment risks that trigger premature seal damage and persistent oil leaks caused by forced assembly.
The barrel and integrated lug plates receive extra thickness reinforcement tailored to abrasive quarry and open-pit mine working conditions. The robust build withstands non-stop ultra-heavy cyclic loads, sharp rock collisions, and long-term abrasive wear, delivering far longer service life than generic thin-wall aftermarket cylinders designed only for light construction.
Every finished cylinder completes two rigorous inspection workflows. First, full-length reciprocating cycle fatigue testing simulates months of continuous heavy operation to validate structural rigidity. Second, extended high-pressure soaking airtight testing detects all internal and external oil leakage flaws. Defective products are fully screened out before packaging to avoid costly unplanned downtime on mining sites.
This aftermarket cylinder matches the structural rigidity, smooth operation, and service lifespan of original OEM spare parts at a significantly lower unit price. It drastically cuts long-term recurring maintenance expenditure for mine repair workshops and large heavy machinery rental companies managing fleets of 345CL excavators.
All in-stock units can be dispatched within 3 working days once payment is confirmed. Air freight channels cater to emergency breakdown rush orders for critical mine operations; consolidated bulk sea shipping and full FCL container transport deliver budget-friendly wholesale pricing for construction machinery distributors serving Africa, Southeast Asia, the Middle East, and Latin American mining markets.
Manufacturer Strength Profile
Our production facility boasts more than a decade of specialized R&D and mass manufacturing experience producing hydraulic cylinders for CL series large mining excavators, including the flagship 345CL model. We operate a complete integrated production line covering heavy precision forging, deep inner honing, integral heat treatment, and automatic thick chrome plating, alongside dedicated load simulation test benches that replicate real harsh mine working environments to refine product durability. Our aftermarket heavy-duty hydraulic cylinder lineup is exported globally year-round, earning consistent positive feedback and stable long-term cooperation with worldwide heavy machinery spare parts distributors thanks to precise model matching and reliable consistent quality.
Common Customer FAQ
Q1: Can this boom cylinder fit 345BL or 349CL excavator models?
A: Cross-model installation is not supported. Different heavy excavator generations carry exclusive OEM part numbers and unique mounting lug geometry that cannot be interchanged. Always double-check your full machine model number before submitting orders.
Q2: Does the standard shipping package include the matching seal repair kit?
A: Standard packaging only contains the complete boom cylinder assembly. The dedicated 242-6838K seal kit must be purchased separately. We offer a discounted combined quotation for customers ordering the cylinder and seal kit together.
Q3: What anti-rust and anti-impact protection is used for long-distance ocean transportation?
A: Anti-rust hydraulic fluid is fully injected into both front and rear cylinder chambers to prevent internal corrosion; thick anti-rust grease is evenly coated across the entire exposed piston rod surface. The full cylinder assembly is wrapped in multi-layer heavy-duty waterproof PE film and secured inside reinforced thick plywood export crates to prevent scratches, impact deformation, and moisture damage during lengthy ocean transit.
Q4: Are tiered volume discounts available when purchasing a full boom, arm, bucket cylinder set for 345CL?
A: Yes. Orders for complete front working device cylinder sets qualify for progressive bulk pricing. Consolidated full-container sea shipping services are also available to minimize overall international logistics expenses for large batch purchases.
Q5: What after-sales support is provided if oil leakage develops within the 12-month warranty period?
A: Please provide clear photos showing the exact leakage position plus your excavator serial number for verification. We will supply free replacement seal components and detailed step-by-step remote maintenance guidance in a timely manner to resolve leakage faults quickly.
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