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

Kubota U20-5 hydraulic piston pump

RB411-61113 hydraulic main pump

PVD-0B-21P-6G3 hydraulic pump

Place of Origin:

China

Model Number:

PVD-0B-21P-6G3

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Product Details

Packing:

Wooden Box

Highlight:

Kubota U20-5 hydraulic piston pump

RB411-61113 hydraulic main pump

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

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Product Description

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

The main hydraulic pump acts as the pivotal power core of excavator hydraulic circuitry, utilizing engine driving force to transform mechanical energy into high-pressure hydraulic energy for system actuation. It transmits pressurized hydraulic fluid to hydraulic motor assemblies to enable all mechanical working motions of construction excavator equipment. The majority of modern engineering excavators are outfitted with axial variable displacement piston pumps. Large and medium excavator machines adopt an all-in-one integrated unit combining dual main pumps and a rear pilot gear pump. Two independent high-pressure oil delivery circuits supply fluid to the main control valve assembly, supporting coordinated composite working actions with a rated working pressure ranging from 28MPa to 35MPa. Installed at the machine tail section, the low-pressure pilot pump runs continuously at 3–4MPa with low flow rates, supplying calibrated pilot pressure oil for joystick manipulation and main valve spool positioning. Piston groups secured on the cylinder block and pump housing revolve alongside the main spindle, completing continuous oil absorption and pressurization processes. Adjusting the swash plate tilt angle alters piston travel stroke, which governs the pump’s overall displacement capacity. An external servo controller modulates swash plate movement based on dynamic hydraulic feedback data. A steeper swash plate angle boosts fluid flow rate and operational response speed, while a shallower angle curbs fuel consumption and eliminates engine flameout risks during operation. The valve plate separates low-pressure inlet ducts and high-pressure outlet ducts to achieve systematic hydraulic oil distribution. Three core control modules ensure the pump’s stable and fault-free operation across variable working conditions. Constant power control proactively reduces pump displacement under rising load pressure, protecting the engine assembly and optimizing power utilization efficiency. The LS load-sensing system delivers on-demand fluid flow corresponding to actual on-site working requirements and maintains minimal idle displacement for effective fuel conservation. The HP pressure limiting function restricts excessive pump displacement at peak pressure values, preventing structural damage and rupture to hydraulic piping and cylinder components. Common malfunctions involve internal leakage stemming from worn piston assemblies, cracked valve plates or clogged regulator passages, resulting in sluggish machine movement and insufficient power output. A seized maximum-displacement regulator induces engine overload, black smoke emission and sudden stalling during heavy-duty construction tasks. Excessive internal leakage converts hydraulic pressure attenuation into thermal energy, triggering abnormal hydraulic fluid overheating. Air intrusion into hydraulic circuits, substandard oil reserves, and defective bearing or piston parts generate irregular mechanical operating noise. Regular maintenance work includes scheduled replacement of hydraulic fluid and filter cartridges to preserve the integrity of precision internal pump structures. Operators must verify airtight sealing of oil suction pipelines to avoid air ingestion and mechanical vibration, and keep hydraulic fluid at calibrated standard levels to sustain consistent long-term pump performance.

C	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Product Name	Hydraulic Pump
Model	PVD-0B-21P-6G3	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-21P-6G3 Hydraulic Pump RB411-61113 RB411-61110 for Kubota U20-5 Mini Excavator Hydraulic Piston Pump 0 Company Profile

Tags：

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

Kubota U20-5 hydraulic piston pump

RB411-61113 hydraulic main pump

PVD-0B-21P-6G3 hydraulic pump

Kubota U20-5 hydraulic piston pump

RB411-61113 hydraulic main pump

PVD-0B-21P-6G3 hydraulic pump

Excavator Parts A10VO45DFLR 53R-VUC62N00 -S3042 R902502504 Hydraulic Piston Pumps OEM Brand Guangdong Origin for XE26 XE35

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

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

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