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Guangzhou Youdao Machinery Equipment Co., Ltd.

  • China,Guangzhou
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China C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part
China C.A.T Main Hydraulic Pump Assembly 551-1122 5511122 Hydraulic System Part

  1. China 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

  1. MOQ: 1 piece
  2. Price: $1000-2000
  3. Get Latest Price
Supply Ability 500pcs/month
Quality Standard Genuine Part
Product Name Main Hydraulic Pump
Packaging Details Neutral Export Carton or Custom Wooden Case
Payment Terms L/C,D/A,D/P,T/T
Compatible Equipment Models 326, 326 GC
Delivery Time 7-10days
Part No. 551-1122 5511122
Model Number 551-1122 5511122
Brand Name C.A.T
Place of Origin USA

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  1. Product Details
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Product Specification

Supply Ability 500pcs/month Quality Standard Genuine Part
Product Name Main Hydraulic Pump Packaging Details Neutral Export Carton or Custom Wooden Case
Payment Terms L/C,D/A,D/P,T/T Compatible Equipment Models 326, 326 GC
Delivery Time 7-10days Part No. 551-1122 5511122
Model Number 551-1122 5511122 Brand Name C.A.T
Place of Origin USA
High Light CAT excavator hydraulic pump assembly ,CAT 551-1122 hydraulic system part ,excavator main hydraulic pump
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.

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

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Agent,Trading Company

  • Year Established:

    2006

  • Total Annual:

    ¥35,000,000-¥60,000,000

  • Employee Number:

    30~50

  • Ecer Certification:

    Verified Supplier

     UNIWAY Machinery Co., Limited has 20 years of experience in international trade and service within the excavator parts industry. We deeply integrate supply chains from internationally renowned brands such as Isuzu, Hitachi and Sany, and our own brand UNIWAY, committed to deliveri...      UNIWAY Machinery Co., Limited has 20 years of experience in international trade and service within the excavator parts industry. We deeply integrate supply chains from internationally renowned brands such as Isuzu, Hitachi and Sany, and our own brand UNIWAY, committed to deliveri...

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  • Guangzhou Youdao Machinery Equipment Co., Ltd.
  • D08-11Zhu Cun International Machinery Market, Guangzhou, China
  • https://www.excavatormainparts.com/

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