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{"title":"Belparts Excavator Hydraulic Cylinder E308 308 Arm Cylinder Assy","imgUrl":"https:\/\/img.chinax.com\/nimg\/9b\/fa\/35e5eb95f968cb146c400a6dcb27-200x200-1\/belparts_excavator_hydraulic_cylinder_e308_308_arm_cylinder_assy.jpg","attrs":{"Brand Name":"Belparts","Model Number":"E308 308","Place of Origin":"Guangdong, China","Price":"negotiation"}}
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This heavy-duty aftermarket hydraulic boom cylinder is precisely produced as a direct interchangeable replacement part for erpillar 322BL excavators. As the core hydraulic power component of the front working assembly, it controls the lifting and lowering of the boom to finish heavy excavation, bulk material hoisting, site leveling and loading tasks. Widely used in stone quarries, municipal upgrading, highway construction and medium-large earthmoving projects.
All products are manufactured strictly in accordance with erpillar OEM technical standards, with fully consistent mounting dimensions, pin hole spacing and hydraulic port layout. Direct bolt-on installation can be completed on site without cutting, welding or any secondary modifi ion work.
Item
Specifi ion
Product Name
Hydraulic Boom Cylinder
Applicable Model
erpillar 322BL Excavator
OEM Part Number
118-4116, 1184116 (two codes correspond to one cylinder)
Product Grade
Brand New High-Quality Aftermarket
Warranty
12 months against manufacturing defects
MOQ
1 unit, sufficient stock for immediate shipment
QC Standard
ISO9001 certified, full hydraulic pressure and cyclic fatigue tests before delivery
2. Core Technical Parameters
#
Part No.
Description
Qty
All
1184116
CYLINDER & SEAL GROUP-BOOM
1
1
7X4803
SEAL (ID=90.00mm); (OD=106.15mm)
4
2
1184166
CYLINDER GROUP-BOOM
1
3
3B8489
FITTING-GREASE; (FAN AND ALTERNATOR DRIVE)
1
----
SEPARATE ILLUSTRATION
Spec Item
Data
Bore Diameter
132mm
Piston Rod Diameter
86mm
Working Stroke
1380mm
Rated Working Pressure
31.4MPa
Factory Test Pressure
47.1MPa (1.5 times 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, excellent wear resistance and anti-deformation performance
Matching Seal Kit PN
118-4116K
Working Temperature
-25℃ ~ +85℃
Structure
Double ear lugs with quenched copper wear bushings, built-in buffer device to reduce impact during recipro ing operation
3. Product Advantages
Dual Part Number Universal Fitment 118-4116 and 1184116 are interchangeable part numbers for the same boom cylinder. All assembly dimensions fully match original parts, connecting seamlessly with boom linkages and hydraulic pipelines to ensure stable continuous heavy-load operation.
Medium-Heavy Load Reinforced Structure Thickened cylinder barrel and connecting lugs are optimized for harsh quarry and construction environments, resisting long-term cyclic loads and accidental collisions to significantly extend service life.
Multi-Round Strict Pre-Delivery Inspection Each finished cylinder undergoes repeated full-stroke cycle tests and high-pressure airtight leak detection, completely eliminating hidden internal and external oil leakage hazards.
High Cost Performance It owns the same stability and service life as genuine spare parts, effectively cutting repeated procurement costs for repair shops and spare parts wholesalers.
Flexible Global Logistics Support In-stock goods can be dispatched within 3 working days. Air freight meets urgent delivery demands, while sea freight is the most economical choice for bulk wholesale orders.
4. Supplier Brief
Our factory has more than ten years of mature experience in R&D and manufacturing hydraulic cylinders for classic excavator series including 322BL. We supply complete boom, arm and bucket cylinder assemblies with sophisti ed production craftsmanship and full-process strict quality control systems. Our products are exported to aftermarket markets across Africa, Southeast Asia and the Middle East all year round, winning long-term trust and consistent favorable feedback from global partners.
5. FAQ
Q1: Can this boom cylinder fit 320BL or 325BL excavators?
A: No. Different excavator models adopt exclusive part numbers and unique structural dimensions without interchangeability. Please confirm your complete excavator model before placing orders.
Q2: Does the standard package include the matching seal repair kit?
A: The seal repair kit is not included in standard delivery. You can purchase the dedi ed supporting seal kit separately, and we will offer a competitive combined order quotation.
Q3: What packaging is used for long-distance overseas sea transportation?
A: Anti-rust oil is injected into the cylinder inner cavity, anti-rust grease evenly coated on the piston rod surface. The whole cylinder is wrapped with waterproof PE film and packed in reinforced export plywood cases to avoid collision and moisture damage during ocean transit.
Q4: Are there tiered volume discounts for purchasing a full set of boom + arm + bucket cylinders?
A: Yes. Complete cylinder set orders enjoy graded preferential pricing. Consolidated container shipment service is also available to lower total logistics expenses.
Q5: What after-sales technical support can be provided if oil leakage occurs within the warranty period?
A: Please provide clear photos of the leakage position and the excavator serial number. We will arrange free seal replacement and professional remote troubleshooting guidance promptly.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2013
Total Annual:
$28000000-$41660000
Employee Number:
1200~1300
Ecer Certification:
Verified Supplier
Since 2013
Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013
Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts
Who We Are
Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
Since 2013
Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013
Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts
Who We Are
Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...