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C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part

C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part

CAT excavator hydraulic pump assembly

CAT 551-1122 hydraulic system part

excavator main hydraulic pump

Place of Origin:

USA

Brand Name:

C.A.T

Model Number:

551-1122 5511122

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C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part
Product Details
Product Name:
Main Hydraulic Pump
Part No.:
551-1122 5511122
Quality Standard:
Genuine Part
Compatible Equipment Models:
326, 326 GC
Highlight:

CAT excavator hydraulic pump assembly

,

CAT 551-1122 hydraulic system part

,

excavator main hydraulic pump

Payment & Shipping Terms
Minimum Order Quantity
1 piece
Price
$1000-2000
Packaging Details
Neutral Export Carton or Custom Wooden Case
Delivery Time
7-10days
Payment Terms
L/C,D/A,D/P,T/T
Supply Ability
500pcs/month
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CONTACT US
+86 19120194795
sale01@uniwaypart.com
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Product Description
C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part
Product Specifications
Part Name Main Hydraulic Pump
Part Number 551-1122 5511122
Brand C.A.T (100% Original Guaranteed)
Place Of Origin Multiple Origins
Quality Standard Genuine Standard
Condition 100% Brand New
MOQ 1 Piece
Packaging Original CaT Sealed Packaging with Authenticity Label


Product Features
  • Electro-Hydraulic Dual-Swashplate Variable & Load-Sensing Power Matching: Features tandem/parallel variable-displacement axial piston pumps integrated with high-precision electro-hydraulic proportional valves. It dynamically adjusts the swashplate angle in milliseconds based on operator input and real-time load resistance, delivering flow-on-demand to optimize hydraulic horsepower efficiency and cut fuel consumption. 
  • Ultra-High Operating Peak Pressure & Heavy-Duty Tribological Pair: Encased in a heavy-duty cast-steel housing rated for high working pressures up to 35–38 MPa (350+ bar). Internal components including cylinder blocks, pistons, and valve plates feature advanced nitriding and wear-resistant coatings, ensuring high volumetric efficiency and anti-cavitation durability under harsh mining conditions. 
  • Modular Dual-Pump Flow Merging & System-Level Integration: Integrated with flow-merging valve manifolds and electronic pressure sensor ports directly on the pump head, allowing automatic dual-pump flow consolidation during high-load lifting or rapid compound operations. Designed with standard SAE high-pressure flanges and splined shafts for streamlined engine-bay integration and simplified maintenance. 
Friendly Reminder: Please ensure this part number matches your machine model and serial number. We strongly recommend checking with the official parts catalog or providing your machine serial number before purchase to avoid ordering the wrong part.

C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part

C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part

Contact Information
Contact Person Sylvia (International Sales Specialist) Anna
Whatsapp/WeChat +86 19120194795 +86 13229460031
Email sale01@uniwaypart.com -
Tags：

cat digger parts

engine oil filter

caterpillar mini excavator parts

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