Name: PVD-0B-18B-6AG3-4950A 20400006 Hydraulic Pump for Excavator Small Piston Hydraulic Pump Construction Machinery Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: PVD-0B-18B-6AG3
Availability: InStock

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

Hydraulic pump for excavator

Small piston hydraulic pump

Construction machinery hydraulic pump

Place of Origin:

China

Model Number:

PVD-0B-18B-6AG3

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Product Details

Packing:

Wooden Box

Highlight:

Hydraulic pump for excavator

Small piston hydraulic pump

Construction machinery hydraulic pump

Payment & Shipping Terms

Minimum Order Quantity

1 Pc

Packaging Details

Carton

Delivery Time

7-15days

Payment Terms

T/T

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

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+8615294125097

guangqi334@gmail.com

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Product Description

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

Acting as the core hydraulic power unit for excavator mechanical operation, the main hydraulic pump receives engine driving power to transform mechanical energy into high-pressure hydraulic power. It delivers pressurized hydraulic medium to hydraulic motors to actuate all operational movements of excavator machinery. Most engineering construction excavators utilize axial variable displacement piston pump systems as their core hydraulic power source. Mid-to-large excavator units adopt a compact integrated assembly of dual main pumps and a rear pilot gear pump. Two separate high-pressure oil supply circuits feed fluid to the main control valve, enabling synchronized compound working actions within a 28MPa–35MPa rated pressure range. The tail-mounted low-pressure pilot pump maintains steady operation at 3–4MPa with low flow volume, providing calibrated pilot pressure oil for control handle manipulation and main valve spool modulation. Piston groups fixed on the cylinder block and pump casing rotate cyclically with the main spindle, completing iterative oil absorption and pressurization workflows. Altering the swash plate inclination angle adjusts piston stroke length, which modulates the pump’s effective displacement value. An external servo actuator regulates swash plate movement based on real-time hydraulic feedback signals. Expanding the swash plate tilt angle improves fluid flow efficiency and machine response speed, while narrowing the angle lowers fuel usage and averts engine shutdown during heavy-duty operation. The valve plate partitions low-pressure inlet passages and high-pressure outlet passages to achieve accurate hydraulic oil distribution. Three integral control functions guarantee the pump’s dependable stability in diverse working environments. Constant power control intelligently reduces pump displacement under increased load pressure, protecting the engine system and boosting overall power utilization rates. The LS load-sensing system delivers variable fluid flow adapted to actual working loads and maintains minimal idle displacement for optimal fuel economy. The HP pressure limiting function suppresses excessive pump displacement at peak pressure levels, preventing rupture damage to hydraulic pipelines and hydraulic cylinder assemblies. Common operational failures cover internal leakage induced by worn piston components, fractured valve plates or blocked regulator passages, resulting in sluggish machine operation and deficient power output. A stuck full-displacement regulator causes engine overload, continuous black smoke emission and stalling during heavy construction tasks. Severe internal oil leakage converts hydraulic pressure loss into thermal energy, triggering abnormal overheating of the entire hydraulic system. Air entrainment in hydraulic circuits, insufficient hydraulic fluid levels, and damaged bearing or piston parts generate abnormal operational noise. Daily maintenance protocols include regular replacement of hydraulic fluid and filter cartridges to prevent abrasion of precision internal pump structures. Maintaining airtight oil suction pipelines eliminates air ingestion and mechanical vibration, while keeping hydraulic fluid at standard calibrated levels ensures consistent long-term pump performance.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	PVD-0B-18B-6AG3-	MOQ	1 Piece
Quality	High-Quality	Delivery time	7-15 Days
Standard or Nonstandard	Standard	Application	Excavator Machinery
Size	Standard Size	Packing	Wooden Box

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

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

Hydraulic pump for excavator

Small piston hydraulic pump

Construction machinery hydraulic pump

Hydraulic pump for excavator

Small piston hydraulic pump

Construction machinery hydraulic pump

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Hydraulic Pump PVD-1B-28P-8AG4 4331671 4358274 4399045 Hydraulic Piston Pump for EX30 Cx26c Excavator Main Pump

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

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