K3V280DTH Pilot Pump for excavators spare parts

Short Description:

The K3V280DTH pilot pump is a heavy-duty high-precision hydraulic gear pilot pump specially matched with K3V280DTH main pump, applicable to 45–50 ton large excavators including Sany SY485, SY550, Komatsu PC460/480 and other large mining construction equipment.

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description

The K3V280DTH pilot pump adopts upgraded thickened reinforced heavy-duty gear pump structure, professionally optimized for the ultra-high pressure, large flow and frequent heavy-load switching working characteristics of K3V280DTH main pump supporting large mining excavators. Different from ordinary medium and small universal pilot pumps that are not resistant to heavy load and easy to decay, this model strictly follows the original factory supporting standards of K3V280DTH main pump, with precise installation dimensions and matched hydraulic parameters, ultra-low internal leakage and extremely stable flow-pressure output under peak load. Equipped with super wear-resistant high-hardness alloy gear pair, thickened anti-fatigue bearing assembly and high-pressure and high-temperature resistant composite sealing system, it can maintain constant pilot pressure output for a long time under long-term ultra-high pressure impact, frequent compound action switching and cyclic hydraulic load. The high-rigidity thickened integral pump body has excellent shock resistance, pressure resistance, dust and sediment erosion resistance, perfectly adapting to harsh working environments such as quarry hard rock excavation, long-term full-load mining and high-dust open-air operation.

product parameters

Product Model: K3V280DTH Pilot Pump

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

Applicable Main Pump: K3V280DTH Hydraulic Main Pump

Applicable Equipment: Sany SY485/SY550, Komatsu PC460/PC480, 45–50 Ton Large Mining Excavators

Structural Feature: Ultra-low Flow Pulsation, Heavy-load Constant Pressure Output, Ultra-low Internal Leakage, Thickened Reinforced Wear-resistant Structure

Core Structure: Super Hardness Wear-resistant Alloy Gear Set, Thickened Anti-fatigue Bearing Assembly, High-pressure High-temperature Resistant Sealing System, Thickened Integral High-rigidity Pump Body

Working Characteristics: Ultra-sensitive Pressure Response, Stable Idle & Heavy-load Pressure, Low Vibration & Low Noise, Impact and Wear Resistant

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

advantages

Specially customized and calibrated for K3V280DTH large-flow negative pressure hydraulic system, perfectly matching original factory heavy-duty installation size and high-pressure pilot parameters, supporting 1:1 non-destructive plug-and-play replacement without equipment modification, with 100% system matching degree and no abnormal adaptation problems.
Super-hard alloy gear pair and thickened bearing structure greatly improve pressure resistance and wear resistance, adapt to long-term ultra-high pressure impact and frequent variable-load operation of large mining excavators, and maintain long-term stable pilot pressure output without power attenuation.
High-strength pressure-resistant and anti-aging composite sealing system resists long-term high-pressure and high-temperature hydraulic cyclic impact, completely eliminates heavy-load oil leakage and system pressure loss, and effectively reduces equipment failure rate and mining downtime loss.
Thickened integral high-rigidity pump body features super strong vibration resistance, pressure resistance and sediment erosion resistance, perfectly adapting to extreme harsh mining working conditions, with service life far exceeding ordinary medium-sized pilot pumps.
Precision large-flow hydraulic matching design achieves precise linkage with K3V280DTH main pump variable mechanism, greatly improves main pump power regulation accuracy and whole machine operation smoothness, effectively enhances mining construction efficiency and equipment fuel economy.

FAQ

Q1: What are the common failure symptoms of K3V280DTH pilot pump?
A: Typical faults include weak heavy-load excavation power, slow boom/arm compound action coordination, unstable idle pilot pressure, walking jitter and deviation, unsmooth swing under load, insensitive main pump variable adjustment, pump body oil leakage and abnormal operating noise under high pressure.
Q2: Why do large mining excavators become weak after long-time full-load operation?
A: Long-term hard rock excavation and ultra-high pressure impact cause wear of internal gears and bearings of the pilot pump, increased internal leakage and decreased pilot pressure, resulting in inaccurate main pump variable adjustment and insufficient hydraulic power. Replacing the aging K3V280DTH pilot pump can restore original heavy-load control performance.
Q3: How to maintain K3V280DTH pilot pump daily?
A: Keep the large-flow hydraulic system oil clean, replace hydraulic oil and high-precision filter elements regularly to prevent hard rock impurities from wearing precision gear components. Regularly check the pump body for high-pressure oil leakage and abnormal noise to ensure stable pilot pressure output and accurate main pump variable operation.
Q4: How to extend the service life of K3V280DTH pilot pump?
A: Avoid long-term extreme overload impact and frequent sudden pressure surge, maintain the cleanliness of the hydraulic system, reduce fatigue wear of internal precision 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.