ZAX200-1 Pilot Pump for excavators spare parts

Short Description:

The ZAX200-1 pilot pump is an original factory high-precision hydraulic gear pilot pump exclusively matched with Hitachi ZAX200-1 20-ton medium excavator hydraulic systems. It perfectly fits classic Hitachi models including ZAX200-1, ZAX210-1 and other first-generation ZAX series 20–22 ton excavators.

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description

The ZAX200-1 pilot pump adopts an original upgraded reinforced thickened gear pump structure, professionally optimized for the exclusive positive flow hydraulic system of Hitachi ZAX200-1 series 20-ton excavators. Different from ordinary universal pilot pumps with poor matching accuracy, insufficient heavy-load stability and easy internal leakage for Hitachi positive flow systems, this model strictly follows Hitachi original factory supporting standards, with fully standardized mounting dimensions, shaft diameter and hydraulic calibration parameters. It achieves ultra-low internal leakage and linear stable flow-pressure output under long-term heavy-load cyclic operation, perfectly solving the inherent pressure attenuation problem of aging original pumps. Equipped with thickened high-strength wear-resistant alloy gear pair, heavy-duty anti-fatigue bearing assembly and high-temperature aging-resistant composite sealing system, it can maintain stable medium-high pressure pilot output without performance attenuation under long-term heavy hydraulic impact and high-frequency compound action switching. The integrated high-rigidity cast pump body features excellent vibration resistance, impact resistance and sediment corrosion resistance, fully adapting to long-term heavy-load construction of earthwork and quarry sites.

product parameters

Product Model: ZAX200-1 Pilot Pump

Product Type: Medium-large Flow Positive Flow Control High-stability Hydraulic Gear Pilot Pump

Applicable Equipment: Hitachi 20–22 Ton Excavators (ZAX200-1, ZAX210-1)

Structural Feature: Ultra-low Flow Pulsation, Medium-high Pressure Constant Output, Ultra-low Internal Leakage, Heavy-duty Reinforced Structure

Core Structure: Thickened High-strength Alloy Gear Set, Heavy-duty Anti-fatigue Bearing Assembly, High-temperature Resistant Sealing System, Integrated Cast High-rigidity Pump Body

Working Characteristics: Rapid Medium-high Pressure Response, Stable Idle & Heavy-load Pressure, Low Vibration & Low Noise, Impact and Aging Resistant

Core Function: Provide Standard Stable Medium-high Pilot Pressure, Support Original Positive Flow System Variable Adjustment and Whole Machine Heavy-load Compound Actions, Ensure Smooth and Powerful Operation

Applicable Working Conditions: Heavy Earthwork Excavation, Quarry Loading, Foundation Engineering, Long-term Heavy-load Continuous Operation

Supporting Matching Parts: Original Positive Flow Main Pump, Medium-large Flow Main Control Valve, Positive Flow Pilot Valve Group, High-precision Hydraulic Filter and Supporting Pipeline

advantages

Exclusively calibrated for Hitachi ZAX200-1 original positive flow hydraulic system, 100% matching original installation size and medium-high pressure pilot parameters, supporting 1:1 non-destructive plug-and-play replacement, no equipment modification required, completely solving the mismatch problem of universal pilot pumps on Hitachi first-generation models.
Adopting positive flow system exclusive low-pulsation constant-pressure output technology, it effectively stabilizes pilot pressure fluctuation and heavy-load pressure drop caused by long-term quarry and earthwork heavy operation, thoroughly solving classic faults of ZAX200-1 such as weak heavy digging power, slow compound action response and walking deviation.
Thickened high-strength alloy gear pair and heavy-duty reinforced bearing structure enhance heavy-load wear resistance and hydraulic impact resistance, adapting to long-term continuous heavy-load cycle operation of 20-ton Hitachi excavators, maintaining stable pilot pressure output without power attenuation or operational fatigue.
Premium high-pressure and high-temperature resistant composite sealing system resists long-term strong hydraulic impact and high-temperature construction environment, completely eliminating heavy-load oil leakage and system pressure loss, effectively reducing high failure rate of aging original machines and daily maintenance costs.
Integrated cast high-rigidity pump body features outstanding anti-impact, anti-vibration and anti-corrosion performance, perfectly adapting to harsh heavy-load construction sites such as stone quarries and earthwork excavation, with service life far longer than ordinary universal pilot pumps.

FAQ

Q1: What are the common failure symptoms of ZAX200-1 pilot pump?
A: Typical faults include weak heavy-load digging actions, slow compound operation response, unstable idle pilot pressure, walking deviation and jitter, sluggish swing rotation, insensitive main pump variable adjustment, pump body oil leakage and abnormal heavy-load impact noise.
Q2: Why does ZAX200-1 lack power during heavy excavation?
A: Long-term heavy-load operation causes wear of internal gears and bearings of the original aging pilot pump, increased internal leakage and decreased pilot pressure, resulting in delayed positive flow system variable response and insufficient hydraulic power. Replacing with a new ZAX200-1 dedicated pilot pump can restore original heavy-load performance.
Q3: How to maintain ZAX200-1 pilot pump daily?
A: Keep the positive flow hydraulic system oil clean, regularly replace hydraulic oil and high-precision filter elements to prevent sediment impurities from wearing internal precision components. Regularly check the pump body for oil leakage and abnormal noise to ensure stable medium-high pressure pilot output and sensitive system operation.
Q4: How to extend the service life of ZAX200-1 pilot pump?
A: Avoid long-term extreme overload operation and frequent violent load impact, maintain hydraulic system cleanliness, reduce internal component impact wear and fatigue loss, and effectively extend the service life of the dedicated 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.