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272-6955 Main Hydraulic Pump Assembly for CAT 320D 323D Excavators - Twin Axial Piston Pump

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  2. 272-6955 Main Hydraulic Pump Assembly for CAT 320D 323D Excavators - Twin Axial Piston Pump
272-6955 Main Hydraulic Pump Assembly for CAT 320D 323D Excavators - Twin Axial Piston Pump

High-performance 272-6955 2PS Main Hydraulic Pump Group for CAT 320D and 323D excavators. Dual variable displacement axial piston design ensures optimal flow and durability for heavy-duty applications.

  • Part Number： 272-6955
  • Product Name： 2PS Main Hydraulic Pump Group
  • Applicable Model： CAT 320D, 321D, 323D
  • Brand： For Caterpillar Replacement
  • Condition： Aftermarket New / Remanufactured
  • Cross Reference： 2726955, 320D Main Pump, 323D Hydraulic Pump
  • MOQ： 1 Unit
  • Warranty： 6 Months
Technical Specifications 272‑6955 ‑ Main Hydraulic Pump (2PS Group) for CAT 320D/323D

272‑6955 Main Hydraulic Pump Assembly — 2PS Group

The 272‑6955 Main Hydraulic Pump Assembly (2PS Group) serves as the core power unit for hydraulic systems of Caterpillar 320D and 323D excavators. This high‑precision dual variable‑displacement axial‑piston pump enables synchronized multi‑function hydraulic operation while improving fuel efficiency and boosting digging breakout force under heavy‑load working conditions.

1. Technical Specifications

Technical ParameterSpecification Details
Part Number272‑6955 (2726955)
Pump Type2PS Dual Variable‑Displacement Axial‑Piston Pump
Overall Dimensions34.0 in Length × 23.5 in Height
Main MaterialsHigh‑Grade Cast Iron Housing with Precision‑Machined Alloy Steel Internal Components
Hydraulic SystemHigh‑Pressure High‑Flow Excavator Hydraulic Circuit
Matching EngineCaterpillar C6.4 ACERT Diesel Engine

2. Machine Compatibility

This pump assembly is a direct OEM‑replacement component for the following Caterpillar excavator models:

  • CAT 320D Series: 320D, 320D GC, 320D L, 320D LN, 320D FM, 320D RR, 320D LRR

  • CAT 323D Series: 323D, 323D L, 323D LN, 323D S, 323D SA

  • Special‑Purpose Models: 321D LCR, 323D mobile hydraulic power units

3. Key Features & Advantages

  • Real‑Time Dynamic Flow Adjustment: Dual variable‑displacement structure automatically regulates oil flow according to working load, preventing engine stall and reducing energy loss.

  • CAT‑Standard Precision Manufacturing: Strictly produced to Caterpillar technical standards for stable performance and long service life under extreme high‑pressure environments.

  • Wear‑Resistant Heavy‑Duty Internal Structure: Reinforced rotating groups minimize internal leakage and maintain high volumetric efficiency for long‑hour operation.

  • Direct Bolt‑On Replacement: Exact mounting dimensions match the original pump, ensuring perfect alignment with flywheel and main control valve assembly for quick installation.

Professional Installation Note
To ensure stable performance and warranty validity, complete hydraulic‑system flushing and full filter replacement are required when installing the 272‑6955 pump assembly. Clean hydraulic oil is critical to protect precision internal components.

For bulk wholesale, technical consultation and customized hydraulic‑system solutions:

Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]

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