HPV75 Pilot Pump for excavators spare parts

Short Description:

The HPV75 pilot pump is a factory-original high-precision hydraulic gear pilot pump exclusively matched with KAWASAKI HPV75 series main piston pumps, widely applied to 12–15 ton medium excavators, perfectly compatible with mainstream models such as Sany SY115, SY125, SY135, XCMG XE135, LiuGong 913 and other domestic medium excavators.

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Product Detail

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description

The HPV75 pilot pump adopts an upgraded precision reinforced gear pump structure, professionally optimized for the medium-pressure, medium-flow, long-term continuous operation and frequent variable-load switching characteristics of KAWASAKI HPV75 main pumps matched for 12–15 ton medium excavators. Different from ordinary universal pilot pumps with poor matching accuracy, unstable pressure output and easy internal leakage for HPV75 hydraulic systems, this model strictly follows original factory supporting standards, with fully standardized mounting dimensions and accurate hydraulic calibration parameters, achieving ultra-low internal leakage and linear stable flow-pressure output under long-term medium-load operation. Equipped with high-precision wear-resistant alloy gear pair, anti-fatigue reinforced bearing assembly and high-temperature aging-resistant composite sealing system, it can maintain stable medium-pressure pilot output without performance attenuation under long-term cyclic hydraulic impact and high-frequency compound action switching. The integrated high-rigidity pump body features excellent vibration resistance, dust resistance and sediment corrosion resistance, fully adapting to earthwork, municipal engineering, road construction and other harsh medium-load construction environments.

product parameters

Product Model: HPV75 Pilot Pump

Product Type: Medium Flow Negative Flow Control Precision Hydraulic Gear Pilot Pump

Applicable Main Pump: KAWASAKI HPV75 Hydraulic Piston Main Pump

Applicable Equipment: 12–15 Ton Medium Excavators (Sany SY115/SY125/SY135, XCMG XE135, LiuGong 913)

Structural Feature: Low Flow Pulsation, Medium-pressure Constant Output, Ultra-low Internal Leakage, Reinforced Anti-wear Compact Structure

Core Structure: High-precision Wear-resistant Alloy Gear Set, Reinforced Anti-fatigue Bearing Assembly, High-temperature Resistant Sealing System, Integrated High-rigidity Pump Body

Core Function: Provide Standard Stable Medium-pressure Pilot Pressure, Drive HPV75 Main Pump Variable Adjustment and Whole Machine Medium-load Compound Hydraulic Actions, Ensure Smooth and Sensitive Operation

Applicable Working Conditions: Earthwork Excavation, Municipal Infrastructure, Road Renovation, Long-term Medium-load Continuous Operation

Supporting Matching Parts: HPV75 Main Pump, Medium-flow Main Control Valve, Negative Flow Pilot Valve Group, High-precision Hydraulic Filter and Supporting Pipeline

advantages

Adopting medium-flow low-pulsation constant-pressure output technology exclusive for HPV75 medium-pressure systems, it effectively stabilizes pilot pressure fluctuation and pressure drop caused by long-term medium-load operation and frequent compound action switching, thoroughly solving common problems such as slow response, weak digging power and walking jitter of 12–15 ton medium excavators in daily construction.
High-precision alloy gear pair and reinforced anti-fatigue bearing structure enhance medium-load wear resistance and impact resistance, adapting to long-term continuous medium-load cycle operation of medium excavators, maintaining stable pilot pressure output without performance attenuation or operational fatigue.
Premium anti-aging and high-temperature resistant composite sealing system resists long-term hydraulic cyclic impact and complex ambient temperature changes, completely eliminating oil leakage and system pressure loss, effectively reducing daily equipment failure rate and routine maintenance costs.
Precision medium-flow hydraulic matching design achieves accurate linkage with HPV75 main pump variable mechanism, greatly improving main pump medium-load regulation sensitivity and whole machine operation smoothness, effectively enhancing construction efficiency and fuel economy of 12–15 ton medium excavators.

FAQ

Q1: What are the common failure symptoms of HPV75 pilot pump?
A: Typical faults include slow medium-load operation response, weak boom and bucket compound digging actions, unstable idle pilot pressure, walking jitter and deviation, sluggish swing rotation, insensitive HPV75 main pump variable adjustment, pump body oil leakage and abnormal operating noise under load.
Q2: Why do 12–15 ton medium excavators have insufficient digging power?
A: Long-term medium-load operation and frequent load switching cause wear of internal precision gears and bearings of the pilot pump, increased internal leakage and decreased pilot pressure, resulting in delayed main pump variable response and insufficient hydraulic pilot power. Replacing the aging HPV75 pilot pump can restore original factory control performance.
Q3: How to maintain HPV75 pilot pump daily?
A: Keep the medium-flow hydraulic system oil clean and qualified, regularly replace hydraulic oil and precision filter elements to prevent hard sediment impurities from wearing internal precision components. Regularly check the pump body for oil leakage and abnormal noise to ensure stable pilot pressure output and sensitive main pump variable operation.
Q4: How to extend the service life of HPV75 pilot pump?
A: Avoid long-term continuous overload operation and frequent sudden load impact, maintain hydraulic system cleanliness, reduce internal component wear and fatigue loss, and effectively extend the service life of the medium-flow pilot pump.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.