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345BL II Hydraulic Bucket Cylinder | PN:118-3934 / 1183934 | Premium Aftermarket Replacement
1. Basic Product Info
This heavy-duty aftermarket hydraulic bucket cylinder is precisely manufactured as a direct interchangeable replacement spare part for erpillar 345BL II large excavators. As the core hydraulic actuator of the front working attachment, it drives bucket digging, grabbing and unloading operations, perfectly suited for open-pit mining, stone quarrying, large infrastructure construction and heavy earthmoving projects.
All cylinders are produced strictly in accordance with erpillar OEM technical specifi ions, with fully consistent mounting dimensions, pin hole spacing and hydraulic port layout. Direct bolt-on installation can be finished on site without cutting, welding or any secondary modifi ion work.
| Item |
Specifi ion |
| Product Name |
Hydraulic Bucket Cylinder |
| Applicable Model |
erpillar 345BL II Excavator |
| OEM Part Number |
118-3934, 1183934 (two codes stand for one cylinder assembly) |
| 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 fatigue tests before shipment |
2. Core Technical Parameters
| # |
Part No. |
Description |
Qty |
| All |
1183934 |
CYLINDER & SEAL GROUP-BUCKET; (BUCKET) |
1 |
| 1 |
1163638 |
CYLINDER GROUP-STICK; -FORE BOOM |
1 |
| 2 |
7X4803 |
SEAL (ID=90.00mm); (OD=106.15mm) |
4 |
| 3 |
3B8489 |
FITTING-GREASE; (FAN AND ALTERNATOR DRIVE) |
1 |
|
---- |
SEPARATE ILLUSTRATION |
|
| Spec Item |
Data |
| Bore Diameter |
150mm |
| Piston Rod Diameter |
96mm |
| Working Stroke |
1560mm |
| 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 |
118-3934K |
| Working Temperature |
-25℃ ~ +85℃ |
| Structure |
Double ear lugs with quenched copper wear bushings, built-in buffer device to reduce impact during recipro ing movement |
3. Product Advantages
- Dual PN Universal Interchange Fitment
118-3934 and 1183934 are fully interchangeable part numbers for the same bucket cylinder. All structural dimensions match original parts completely, seamlessly connecting bucket linkages and hydraulic pipelines to guarantee stable continuous heavy-load operation under mining and quarry working conditions.
- Mine-Grade Reinforced Heavy-Duty Structure
Thickened cylinder barrel and connecting lugs adopt optimized reinforcement design, capable of enduring long-term cyclic heavy loads and frequent collision impacts in harsh mining sites, greatly extending overall service life.
- Multi-Round Strict Pre-Delivery Inspection
Each finished cylinder undergoes repeated full-stroke cycle tests and high-pressure airtight leak detection, thoroughly eliminating hidden risks of internal and external oil leakage.
- Excellent Cost Performance
Delivers identical stability and durability as genuine spare parts, effectively cutting recurring procurement costs for repair workshops and spare parts wholesalers.
- Flexible Global Logistics Solutions
In-stock goods can be dispatched within 3 working days. Air freight meets urgent delivery demands, while sea freight provides the most cost-effective solution 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 large excavator series including 345BL II. 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 bucket cylinder fit 345BL or 330BL 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 adopted for long-distance overseas sea transportation?
A: Anti-rust oil is injected into the cylinder inner cavity, anti-rust grease evenly coated on piston rod surface; the whole cylinder 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 is available if oil leakage occurs within warranty?
A: Please provide clear photos of leakage position and excavator serial number. We will arrange free seal replacement and professional remote troubleshooting guidance promptly.
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