322CL Hydraulic Bucket Cylinder for Excavator Spare Parts 174-8255 1748255 Aftermarket High Quality
This heavy-duty bucket hydraulic cylinder is a direct bolt-on aftermarket spare exclusively produced for classic 322CL long track medium-heavy excavator, a discontinued C-series machine widely used in highway infrastructure, housing foundation excavation, medium quarry mining and bulk soil stockyard loading. As the terminal hydraulic actuator of front working attachments, it generates powerful bucket curl and dump breakout force to handle long-cycle heavy earthmoving jobs. It is a must-stock spare for second-hand equipment overhaul yards, medium-large excavation rental fleets and cross-border spare parts wholesalers focusing on vintage C-series excavators.
All manufacturing processes strictly follow original vintage OEM mining-grade drawings and precise assembly tolerances. Mount lug spacing, pin hole inner diameter, thick wear-resistant bronze bushing size and hydraulic port layout fully match interchangeable OEM part numbers 174-8255 and 1748255. No on-site cutting, grinding or welding modification needed during replacement installation, greatly lowering maintenance labor cost and avoiding long construction shutdown losses caused by scarce original cylinder spare parts for aging 322CL frames.
| Item | Detailed Specification |
|---|---|
| Full Product Name | Complete Bucket Hydraulic Cylinder Assembly |
| Applicable Machinery | 322CL Long Track Medium-Heavy Crawler Excavator |
| OEM Reference PN | 174-8255, 1748255 |
| Product Grade | Reinforced aftermarket hydraulic cylinder for vintage heavy construction & light quarry works |
| Quality Warranty | 12-month full warranty covering all factory-originated manufacturing defects |
| Minimum Order Quantity | 1 unit, sufficient spot stock for fast global shipment |
| QC Execution Standard | ISO9001 full-process traceable production; 100% high-pressure hydrostatic airtight leak inspection & full-stroke cyclic medium-heavy load fatigue impact testing prior to packing |
| Technical Index | Standard Parameter |
|---|---|
| Cylinder Tube Inner Bore | 122 mm |
| Hard Chrome Plated Piston Rod Diameter | 78 mm |
| Effective Functional Stroke | 1330 mm |
| Rated System Working Pressure | 31.4 MPa |
| Factory Hydraulic Proof Test Pressure | 47.1 MPa (1.5× rated pressure for comprehensive internal & external leak screening) |
| Cylinder Tube Raw Material | High tensile seamless alloy steel processed via ultra-deep precision inner honing, mirror-smooth abrasion-proof inner wall to withstand continuous medium-heavy hydraulic fluid circulation under long-hour quarry and infrastructure loads |
| Piston Rod Surface Treatment | 40CrMo quenched & tempered high-strength base alloy, 30–35μm dense hard chrome overlay, surface hardness HRC68–72. Excellent scratch resistance, bending stability and impact resistance against hard rock, concrete chunks and ore debris |
| Matching Dedicated Seal Kit PN | 174-8255-KIT |
| Safe Operational Temperature Band | -25℃ ~ +85℃ |
| Specialized Structural Design | Oversized extra-thick integrated bucket connecting lugs fitted with heavy-duty self-lubricating bronze alloy wear bushings; dual progressive internal buffer assembly to absorb severe instantaneous end-stroke shock during repeated full-load bucket grab-release cycles |
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Exclusive Dual PN Matching Only for Discontinued 322CL C-Series Model
Part numbers 174-8255 and 1748255 are interchangeable bucket cylinders custom-designed solely for 322CL, incompatible with 320C, 325C and other excavator series. All mounting geometric dimensions fully replicate genuine vintage OEM components, seamlessly matching aged machine bucket linkages and original complete hydraulic piping layout. It thoroughly eliminates assembly offset issues that accelerate seal aging and cause persistent oil seepage from forced installation on slightly fatigued old heavy machine frames.
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Vintage C-Series Heavy-Duty Targeted Reinforced Anti-Impact Upgrade
Generic thin-wall universal aftermarket cylinders cannot sustain long-duration alternating medium-heavy loads of aging 322CL machines running quarry and large foundation projects. This model upgrades cylinder tube and cast lug wall thickness customized for the high-intensity working mode of discontinued C-series excavators, greatly extending service life and cutting frequent replacement costs for operators relying on second-hand heavy fleets.
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Two Independent Pre-Shipment Offline Quality Screenings Eliminate Hidden Failure Hazards
Each finished bucket cylinder undergoes two separate rigorous offline test sequences before exiting production workshops. Full-stroke reciprocating fatigue testing simulates months of non-stop heavy earthmoving to verify integral structural bearing rigidity; extended high-pressure submerged airtight inspection detects every tiny internal and external oil leakage dead angle. All defective units are fully filtered out prior to warehousing to prevent costly unplanned construction shutdowns for contractors operating vintage heavy equipment.
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Optimized Cost Performance for Owners of Discontinued C-Series Medium-Heavy Fleets
Genuine OEM spare parts for long-discontinued 322CL are globally scarce with high retail prices and lengthy international supply lead times. This aftermarket bucket cylinder matches the structural load capacity, low-vibration stable operation and full service lifespan of authentic factory components at an economical unit price. It drastically reduces recurring long-term maintenance overhead for equipment overhaul hubs and rental enterprises managing batches of aging 322CL excavators.
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Multi-Mode Global Shipping Solutions for All Overseas Construction & Mining Markets
All ready-stock units can be dispatched within 3 working days upon payment confirmation. Air freight channels handle emergency rush shipments for sudden machine breakdowns at remote quarry and highway construction sites; consolidated bulk sea cargo and full FCL container transport deliver budget-friendly wholesale shipping packages for machinery distributors supplying construction & mining markets across Africa, Southeast Asia, the Middle East and Latin America.
Our production facility has over a decade of specialized R&D and mass manufacturing expertise focused on hydraulic cylinders for discontinued C-series medium-heavy excavators, with flagship 322CL as one of our core mature production lines. We operate a fully integrated closed-loop production workflow covering heavy precision forging, deep inner honing, integral heat treatment and automated thick chrome plating, paired with dedicated medium-heavy load construction & quarry simulation test benches that replicate real harsh jobsite environments to continuously optimize product shock resistance and long-term wear durability. Our heavy-duty vintage aftermarket hydraulic cylinder lineup is exported worldwide year-round, securing sustained long-term cooperative partnerships and consistent positive customer testimonials from global medium-heavy machinery spare parts distributors, thanks to precise discontinued C-series model compatibility and uniform strict stable quality control standards.
Q1: Can this bucket cylinder fit 320C or 325C excavators?
A: Cross-model installation is not supported. Different excavator generations adopt exclusive non-interchangeable OEM part numbers and unique lug mounting geometries. Always double-verify your full machine model before submitting purchase orders.
Q2: Does standard shipment packaging include the matching seal repair kit?
A: Standard packaging only contains the complete bucket cylinder assembly. The dedicated 174-8255-KIT seal kit must be purchased separately, and we offer discounted bundled pricing for clients ordering the cylinder and seal kit together.
Q3: What anti-corrosion and anti-impact protective measures are implemented for long-haul ocean transit?
A: Anti-rust hydraulic fluid is fully injected into front and rear cylinder chambers to block internal corrosion; thick anti-rust grease is evenly coated across the entire exposed piston rod surface. The complete cylinder unit is wrapped in multi-layer heavy-duty waterproof PE film and secured inside reinforced thick plywood export crates to avoid scratches, impact deformation and moisture damage during lengthy cross-ocean transportation.
Q4: Are tiered volume-based bulk discounts available when purchasing a full boom + arm + bucket cylinder set for 322CL?
A: Yes. Orders for the complete front working attachment cylinder set qualify for progressive volume preferential pricing. Consolidated full-container sea shipping can also be arranged to lower overall international logistics expenses for large-batch procurement.
Q5: What after-sales technical support is provided if oil leakage emerges within the 12-month warranty window?
A: Kindly submit clear photos capturing the exact leakage location plus your excavator serial number for official verification. We will promptly dispatch free replacement seal components and detailed step-by-step remote maintenance guidance to resolve oil leakage faults without interrupting critical quarry and highway construction schedules.
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