Name: Excavator Hydraulic Pump K3V180DT-9N69 Hydraulic Parts Excavator R320-3 Construction Machinery Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: K3V180DT-9N69
Availability: InStock

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Excavator Hydraulic Pump K3V180DT-9N69 Hydraulic Parts Excavator R320-3 Construction Machinery Parts

Excavator hydraulic pump K3V180DT-9N69

R320-3 hydraulic main pump

Construction machinery hydraulic parts

Place of Origin:

China

Model Number:

K3V180DT-9N69

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Product Details

Color:

Gray

Application:

R320-3

Highlight:

Excavator hydraulic pump K3V180DT-9N69

R320-3 hydraulic main pump

Construction machinery hydraulic parts

Payment & Shipping Terms

Minimum Order Quantity

1 Pc

Packaging Details

Carton

Delivery Time

3-15days

Payment Terms

T/T

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Product Description

Excavator Hydraulic Pump K3V180DT-9N69 Engine Parts Excavator R320-3 Construction Machinery Parts

Functional Overview

The hydraulic main pump is defined as the power source of excavator hydraulic system, mechanically driven by the prime engine to implement energy conversion from mechanical energy to high-pressure hydraulic energy. It provides pressurized working medium for all executive hydraulic components covering boom, dipper, bucket, travel and swing driving motors.

Type Specification

All mainstream engineering excavators adopt axial variable piston pump configuration; tandem integrated double main pump is standard configuration for medium and large-size models, with pilot gear pump integrally assembled on rear end face.
Dual-chamber main pump works under rated working pressure 28~35MPa, two independent oil supply loops realize separate oil delivery for composite operation requirements. The attached pilot pump is designed for low-pressure & low-flow working condition with rated pressure 3~4MPa, specially providing pilot control oil for manipulation joysticks and main control valve spool driving.

Component Composition

Pump shell plus cylinder block is assembled with multiple plunger groups accomplishing oil suction and pressurization following main shaft rotary motion. Swash plate inclination directly modulates plunger stroke and pump volumetric displacement. External hydraulic servo regulator receives pilot pressure signal to adjust swash deflection angle. Increased inclination expands displacement and flow rate to speed up operation; reduced inclination minimizes flow output to save fuel and eliminate engine overload shutdown risk. Valve plate is arranged between suction and discharge chambers for fluid allocation and high-low pressure isolation.

Three Core Control Mechanisms

Constant power matching function automatically reduces pump displacement following load growth to optimize engine power utilization and prevent stall. Load sensing control dynamically adjusts outflow consistent with real working requirement and maintains minimal displacement under no-load working status for energy saving. Pressure limiting cutoff function sharply lowers pump displacement to minimum value once system pressure reaches set threshold value to protect pipeline and hydraulic cylinder against overpressure rupture.

Common Fault Analysis

Internal leakage caused by abrasion of friction matching parts or regulator jamming leads to insufficient flow supply and slow whole-machine action. Fixed large-displacement regulator results in excess oil supply, engine overload and black smoke exhaust. Massive internal hydraulic leakage converts wasted pressure into heat, causing continuous rise of hydraulic oil temperature. Air entrainment from loose suction pipeline, inadequate liquid level or damaged internal moving parts creates abnormal pump vibration and harsh sound.

Regular Maintenance Rules

Carry out periodic replacement of hydraulic working fluid and filter assemblies to prevent particle abrasion on core precision parts. Strictly inspect sealing performance of oil suction piping to avoid air access and operational jitter. Maintain hydraulic oil within specified scale to prolong pump service lifespan effectively.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	K3V180DT-9N69	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Color	Grey

Excavator Hydraulic Pump K3V180DT-9N69 Hydraulic Parts Excavator R320-3 Construction Machinery Parts 0 Company Profile

Tags：

Excavator Hydraulic Pump K3V180DT-9N69 Hydraulic Parts Excavator R320-3 Construction Machinery Parts

Excavator hydraulic pump K3V180DT-9N69

R320-3 hydraulic main pump

Construction machinery hydraulic parts

Excavator hydraulic pump K3V180DT-9N69

R320-3 hydraulic main pump

Construction machinery hydraulic parts

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PVD-0B-18B-6AG3-4950A 20400006 Hydraulic Pump for Excavator Small Piston Hydraulic Pump Construction Machinery Parts

PVD-0B-21P-6G3 Hydraulic Pump RB411-61113 RB411-61110 for Kubota U20-5 Mini Excavator Hydraulic Piston Pump

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