K3V112DT Pilot Pump for excavators spare parts

Short Description:

The K3V112DT pilot pump is a high-precision heavy-duty hydraulic gear pilot pump specially matched with Kawasaki K3V112DT dual variable main pump, widely applicable to 20–25 ton medium and large excavators including Volvo EC210, EC240, Kobelco SK200, SK210, Doosan DH220, DH225 and other mainstream models.

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Product Detail

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description

The K3V112DT pilot pump adopts upgraded reinforced heavy-duty gear pump structure, professionally optimized for the medium-high pressure, large-flow and long-term frequent variable-load operation characteristics of Kawasaki K3V112DT main pump supporting 20–25 ton excavators. Different from ordinary universal pilot pumps with poor pressure stability and easy attenuation under heavy load, this model strictly follows the original factory supporting standards of K3V112DT main pump, with precise installation dimensions and fully matched hydraulic parameters, ultra-low internal leakage and linear stable flow-pressure output under continuous load. Equipped with high-hardness wear-resistant alloy gear pair, reinforced anti-fatigue bearing assembly and high-temperature aging-resistant composite sealing system, it can maintain stable pilot pressure output without attenuation under long-term cyclic hydraulic impact and high-frequency compound action switching. The high-rigidity integral pump body has excellent vibration resistance, dust resistance and sediment erosion resistance, perfectly adapting to earthwork construction, municipal engineering, stone quarry excavation and other medium and heavy load harsh working environments.

product parameters

Product Model: K3V112DT Pilot Pump

Product Type: Large Flow Negative Flow Control Medium-high Pressure Hydraulic Gear Pilot Pump

Applicable Main Pump: Kawasaki K3V112DT Dual Variable Hydraulic Main Pump

Applicable Equipment: Volvo EC210/EC240, Kobelco SK200/SK210, Doosan DH220/DH225, 20–25 Ton Excavators

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

Core Structure: High-hardness Alloy Gear Set, Anti-fatigue Bearing Assembly, High-temperature Pressure-resistant Sealing System, 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 Standard Stable Pilot Pressure, Drive Dual Main Pump Variable Adjustment and Whole Machine Compound Hydraulic Actions, Ensure Powerful and Smooth Operation

advantages

Specially customized and calibrated for Kawasaki K3V112DT classic negative flow hydraulic system, perfectly matching original factory installation size and hydraulic parameters, supporting 1:1 non-destructive plug-and-play replacement for multiple 20–25 ton mainstream excavator models, no equipment modification required, with 100% system matching degree and zero adaptation faults.
Adopting heavy-load anti-fluctuation constant-pressure output technology, it effectively suppresses pilot pressure drop and fluctuation caused by hard rock excavation and long-term medium-heavy load switching, thoroughly solving core pain points such as weak heavy-load action and uncoordinated compound actions of 20-ton excavators.
High-hardness alloy gear pair and reinforced bearing structure greatly improve pressure resistance and wear resistance, adapt to long-term high-frequency variable-load operation and cyclic hydraulic impact of medium and large excavators, and maintain long-term stable pilot pressure output without power attenuation.
High-strength anti-aging and high-temperature resistant composite sealing system resists long-term hydraulic high-pressure cycle impact, completely eliminates heavy-load oil leakage and system pressure loss, and effectively reduces equipment failure rate and construction downtime loss.

FAQ

Q1: What are the common failure symptoms of K3V112DT pilot pump?
A: Typical faults include weak heavy-load excavation power, delayed boom/arm compound action response, unsynchronized dual-pump hydraulic output, unstable idle pilot pressure, walking jitter and deviation, unsmooth loaded swing, insensitive main pump variable adjustment, pump body high-pressure oil leakage and abnormal operating noise.
Q2: Why do 20–25 ton excavators lose power after long heavy-load operation?
A: Long-term hard rock excavation and high-pressure hydraulic impact cause wear of internal gears and bearings of the pilot pump, increased internal leakage and decreased pilot pressure, resulting in inaccurate dual main pump variable adjustment and insufficient hydraulic power. Replacing the aging K3V112DT pilot pump can restore original heavy-load control performance.
Q3: How to maintain K3V112DT 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 oil leakage and abnormal noise to ensure stable pilot pressure output and accurate dual main pump variable operation.
Q4: How to extend the service life of K3V112DT 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.
Q5: Is debugging required after replacing K3V112DT pilot pump?
A: This pilot pump adopts original standard parameters and installation dimensions matching K3V112DT negative flow system, supporting non-destructive direct replacement. It is recommended to detect idle and heavy-load pilot pressure after installation to ensure the best linkage state with the dual main 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.