A8V55 Pilot Pump for excavators spare parts

Short Description:

The A8V55 pilot pump is a high-precision dedicated hydraulic gear pilot pump perfectly matched with the A8V55 dual variable main pump, widely applicable to 8–10 ton small and medium excavators, rotary drilling rigs and engineering machinery equipped with Rexroth A8V55 hydraulic system.

Send email to us

Product Detail

Product Tags

description

The A8V55 pilot pump adopts upgraded reinforced heavy-duty gear pump structure, professionally optimized for the dual-pump linkage, medium-pressure and frequent variable-load operation characteristics of the A8V55 main pump hydraulic system. Different from ordinary universal pilot pumps with poor matching accuracy and easy pressure attenuation, this model strictly follows the original factory supporting standards of the A8V55 main pump, with precise installation dimensions and fully matched hydraulic parameters, ultra-low internal leakage and linear stable flow-pressure output. 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 for a long time under long-term frequent start-stop, compound action switching and cyclic hydraulic impact. The high-rigidity integral pump body has excellent vibration resistance, dust resistance and sediment erosion resistance, perfectly adapting to municipal construction, earthwork backfilling, foundation construction and other medium-duty harsh working environments.

product parameters

Product Model: A8V55 Pilot Pump

Product Type: Medium Flow Hydraulic Gear Pilot Pump for Dual Variable Pump System

Applicable Main Pump: Rexroth A8V55 Dual Variable Hydraulic Main Pump

Applicable Equipment: 8–10 Ton Small and Medium Excavators, Rotary Drilling Rigs, A8V55 System Engineering Machinery

Structural Feature: Low Flow Pulsation, 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

Applicable Working Conditions: Municipal Engineering, Earthwork Backfilling, Foundation Construction, Long-term Frequent Medium-load Operation

Supporting Matching Parts: A8V55 Main Pump, Medium-flow Main Control Valve, Pilot Valve Group, Precision Hydraulic Filter and Supporting Pipeline

advantages

Specially customized and calibrated for Rexroth A8V55 dual-pump combined hydraulic system, perfectly matching original installation size and pilot pressure parameters, supporting 1:1 non-destructive plug-and-play replacement without equipment modification, with high system matching degree and zero adaptation faults.
Adopting low-pulsation constant-pressure output technology, it effectively avoids pilot pressure fluctuation and pressure drop caused by dual-pump linkage operation and frequent medium-load switching, thoroughly solving common problems such as slow response, weak operation and jitter of A8V55 system equipment.
High-hardness alloy gear pair and reinforced bearing structure greatly improve wear resistance and structural stability, adapt to long-term high-frequency start-stop and variable-load operation of medium and small construction machinery, and maintain long-term stable pilot pressure output without attenuation.
High-quality anti-aging and high-temperature resistant sealing system resists long-term hydraulic cyclic impact and temperature changes, completely eliminates oil leakage and pressure failure, and effectively reduces equipment failure rate and daily maintenance costs.

FAQ

Q1: What are the common failure symptoms of A8V55 pilot pump?
A: Typical faults include delayed operation response, weak boom/arm/bucket compound actions, unsynchronized dual-pump power output, unstable idle pilot pressure, walking jitter and deviation, unsmooth swing actions, slow main pump variable response, pump body oil leakage and abnormal operating noise.
Q2: Why does the A8V55 system equipment become sluggish after long working hours?
A: Long-term frequent medium-load operation causes wear of internal gears and bearings of the pilot pump, increased internal leakage and decreased pilot pressure, resulting in unsensitive dual main pump variable adjustment and weak hydraulic actions. Replacing the aging A8V55 pilot pump can restore original control performance.
Q3: How to maintain A8V55 pilot pump daily?
A: Keep hydraulic oil clean, replace hydraulic oil and filter elements regularly to prevent hard impurities from wearing precision gear components. Regularly check the pump body for oil leakage and abnormal noise to ensure stable pilot pressure output and normal dual main pump variable operation.
Q4: How to extend the service life of A8V55 pilot pump?
A: Avoid long-term continuous medium-load overload operation and frequent sudden load impact, maintain the cleanliness of the hydraulic system, reduce internal component wear and fatigue loss, and effectively extend the service life of the 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.