K3V140 Pilot Pump for excavators spare parts

Short Description:

The K3V140 pilot pump is a heavy-duty high-precision hydraulic gear pilot pump specially matched with K3V140 series main piston pumps, widely applied to 30–36 ton large excavators and heavy engineering machinery hydraulic systems.

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Product Detail

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description

The K3V140 pilot pump adopts super thickened heavy-duty reinforced gear pump structure, professionally optimized for the high-pressure, large-flow, long-term heavy-load continuous operation and high-frequency impact load switching characteristics of K3V140 main pump supporting 30–36 ton super large excavators. Different from ordinary universal pilot pumps that are prone to internal leakage and pressure attenuation under long-term rock breaking and heavy earthwork conditions, this model strictly complies with 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 full-load continuous operation. Equipped with ultra-high hardness wear-resistant alloy gear pair, heavy-load impact-resistant reinforced bearing assembly and high-temperature high-pressure anti-aging composite sealing system, it can maintain stable pilot pressure output without attenuation or failure under long-term extreme hydraulic impact and high-intensity frequent compound action switching. The integrated ultra-rigid thickened pump body features outstanding vibration resistance, dust resistance and sediment corrosion resistance, fully adapting to harsh working environments such as mountain quarrying, rock excavation and heavy-load foundation construction.

product parameters

Product Model: K3V140 Pilot Pump

Product Type: Large Flow Positive/Negative Flow Control Heavy-duty Hydraulic Gear Pilot Pump

Applicable Main Pump: K3V140 Hydraulic Piston Main Pump

Applicable Equipment: 30–36 Ton Large Excavators

Structural Feature: Ultra-low Flow Pulsation, High-pressure Heavy-load Constant Output, Ultra-low Internal Leakage, Super Thickened Reinforced Structure

Core Structure: Ultra-high Hardness Wear-resistant Alloy Gear Set, Heavy-duty Impact-proof Bearing Assembly, High-pressure High-temperature Resistant Sealing System, Integrated Thickened High-rigidity Pump Body

Working Characteristics: Sensitive Pressure Response, Stable Idle & Full-load Pressure, Low Vibration & Low Noise, Impact and Aging Resistant

Core Function: Provide High-precision Stable Pilot Pressure, Drive K3V140 Main Pump Variable Adjustment and Whole Machine Heavy-load Compound Hydraulic Actions, Ensure Powerful and Stable Operation

Supporting Matching Parts: K3V140 Main Pump, Large-flow Main Control Valve, Positive/Negative Flow Pilot Valve Group, High-precision Hydraulic Filter and Supporting Pipeline

advantages

Precisely customized and calibrated for K3V140 large excavator positive/negative flow hydraulic system, fully matching original factory installation dimensions and high-pressure pilot parameters, supporting 1:1 non-destructive plug-and-play replacement for 30–36 ton mainstream large excavators, no modification required, 100% system matching with zero adaptation errors.
Adopting large-flow low-pulsation constant-pressure output technology, it effectively suppresses pilot pressure fluctuation and pressure drop caused by long-term rock breaking impact and full-load continuous operation, completely solving industry pain points such as weak heavy-load digging power, slow compound action response and walking jitter of large excavators in quarry and heavy earthwork conditions.
Ultra-high hardness alloy gear pair and heavy-duty reinforced impact-resistant bearing structure significantly enhance wear resistance and structural stability, adapting to long-term extreme high-intensity variable-load operation of large excavators, maintaining stable pilot pressure output without performance attenuation or operation fatigue.
Premium high-pressure and high-temperature resistant composite sealing system resists long-term severe hydraulic impact and extreme temperature changes, thoroughly eliminating oil leakage and system pressure loss under heavy-load working conditions, effectively reducing equipment failure rate and later-stage maintenance costs.

FAQ

Q1: What are the common failure symptoms of K3V140 pilot pump?
A: Typical faults include slow heavy-load rock-breaking response, weak boom/arm/bucket compound digging actions, unstable idle pilot pressure, walking jitter and deviation, sluggish swing rotation, insensitive main pump full-load variable adjustment, pump body oil leakage and abnormal impact noise under heavy load.
Q2: Why do 30–36 ton large excavators lack power during long-term rock breaking operation?
A: Long-term high-intensity impact and full-load operation causes 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 output power. Replacing the aging K3V140 pilot pump can restore original heavy-load control performance and digging power.
Q3: How to maintain K3V140 pilot pump daily?
A: Maintain high cleanliness of large-flow hydraulic system oil, regularly replace high-precision hydraulic oil and filter elements to prevent hard rock dust and sediment impurities from wearing internal precision components. Regularly inspect the pump body for oil leakage and abnormal load noise to ensure stable high-pressure pilot output and sensitive main pump variable operation.
Q4: How to extend the service life of K3V140 pilot pump?
A: Avoid long-term extreme overload operation and frequent violent rock-breaking impact, keep the hydraulic system clean, reduce wear and fatigue loss of internal heavy-load components, and effectively extend the service life of the heavy-duty 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.