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CASE 9050B Hydraulic Boom Cylinder | PN:173782A1 | Premium Aftermarket Replacement
1. Basic Product Info
This heavy-duty aftermarket hydraulic boom cylinder is precision manufactured as a direct OEM replacement for CASE 9050B medium excavators. As the core hydraulic power component of the front working attachment, it controls boom lifting and lowering to handle excavation, bulk material lifting, land leveling and loading operations. Widely used in municipal renovation, highway construction, stone quarries and medium-scale earthmoving projects.
All cylinders are strictly produced in accordance with CASE original technical specifications, with consistent mounting dimensions, pin hole spacing and hydraulic port layout. Direct bolt-on installation without cutting, welding or any on-site secondary modification.
| Item |
Specification |
| Product Name |
Hydraulic Boom Cylinder |
| Applicable Model |
CASE 9050B Excavator |
| OEM Part Number |
173782A1 |
| Product Grade |
Brand New High-Quality Aftermarket |
| Warranty |
12 months against manufacturing defects |
| MOQ |
1 unit, sufficient stock for fast delivery |
| QC Standard |
ISO9001 certified, full hydraulic pressure & cyclic fatigue testing before shipment |
2. Core Technical Parameters
| Spec Item |
Data |
| Bore Diameter |
124mm |
| Piston Rod Diameter |
81mm |
| Working Stroke |
1310mm |
| 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 & anti-deformation performance |
| Matching Seal Kit PN |
173782A1K |
| Working Temperature |
-25℃ ~ +85℃ |
| Structure |
Double ear lugs with quenched copper wear bushings, built-in buffer device to reduce impact during reciprocating movement |
3. Product Advantages
- 100% OEM Exact Interchange Fitment
All assembly sizes, lug spacing and oil port positions fully match original 173782A1 cylinder. Perfectly connects boom linkages and hydraulic hoses to maintain stable continuous medium-heavy load operation.
- Reinforced Medium-Heavy Load Structure
Thickened cylinder tube and connection lugs are optimized for quarry and construction harsh working conditions, resisting long-term cyclic loads and accidental collisions to extend service life greatly.
- Multi-Round Strict Pre-Delivery Inspection
Each finished cylinder undergoes full-stroke reciprocating cycle test and high-pressure airtight leak detection, completely eliminating internal & external oil leakage hidden hazards.
- High Cost Performance
Delivers the same stability and service life as genuine CASE OEM spare parts, effectively cutting repeated procurement costs for repair shops and spare parts wholesalers.
- Flexible Global Logistics Support
In-stock items can be dispatched within 3 working days. Air freight for urgent breakdown orders; sea freight for low-cost bulk wholesale shipments to Africa, Southeast Asia, Middle East and Latin America.
4. Supplier Brief
Our factory has over 10 years of professional experience in developing and manufacturing hydraulic cylinders for CASE excavator series, covering classic models like 9050B, CX series and older B series machines. We supply complete boom, arm and bucket cylinder assemblies with mature production craft and full-process strict quality control. Our aftermarket hydraulic cylinders are exported to global aftermarket markets year-round, winning long-term trust and consistent positive feedback from worldwide spare parts dealers.
5. FAQ
Q1: Can this boom cylinder fit other CASE models such as 9060B or CX160B?
A: No. Each CASE excavator model uses exclusive OEM part numbers and unique structural dimensions without interchangeability. Please confirm your complete machine model before ordering.
Q2: Does the standard package include the matching seal repair kit?
A: The seal repair kit is not contained in standard delivery. You can purchase the dedicated supporting seal kit separately, and we will offer a competitive combined order quotation.
Q3: How is the product packed for long-distance ocean transportation?
A: Anti-rust oil is injected into cylinder inner cavity, anti-rust grease evenly coated on piston rod surface. The whole cylinder is wrapped with waterproof PE film and packed in reinforced export plywood cases to avoid collision, scratch and moisture damage during long sea transit.
Q4: Are there tiered volume discounts when purchasing a full set of boom + arm + bucket cylinders for 9050B?
A: Yes. Complete working device cylinder set orders enjoy graded volume discounts. Consolidated container shipment service is available to lower total logistics expenses.
Q5: What after-sales technical support is available if oil leakage occurs within the 12-month warranty period?
A: Please provide clear photos of the leakage position plus your excavator serial number. We will arrange free seal replacement and professional remote troubleshooting guidance promptly.
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