Русский
Electronic Controlled Multi-spool Valve Model KMX36NAE/P45203A Manufactured by Kawasaki Heavy Industries, Japan Sany Original Part Code: 150602080013A Fit for Excavator Models: SY1250H, SY350H
Place of Origin:China
Brand Name:Sany and Kawasaki
Model Number:150602080013A / KMX36NAE/P45203A
Minimum Order Quantity:1pcs
Price:Negotiable
Payment Terms:T/T,Western Union
Supply Ability:1-1000pcs
Product Description
Detailed Product Description for Kawasaki Japan Electronically Controlled Multi-Way Valve KMX36NAE/P45203A
Appearance of Kawasaki KMX Series Multi-Way Valve
I. Basic Material Information
Full Product Name: Kawasaki Heavy Industries Japan KMX36 Electro-Hydraulic Proportional Main Control Multi-Way Directional Valve Assembly
Model No.: KMX36NAE/P45203A
Sany Original Material Code: 150602080013A
Brand Profile: Original imported main control multi-way valve manufactured by Kawasaki Heavy Industries, Japan, core hydraulic control valve originally equipped for Sany excavators
Supply Status: In Stock, Wooden Case Packaging, US Dollar Quotation Negotiable
Applicable Excavator Models: SY1250H, SY350H (Universal main valve for SY1250H 120-ton ultra-large mining excavator and SY350H medium & large mining excavator)
Control Type: Fully electronic proportional pilot operated main multi-way valve, open-center load sensing system, electro-hydraulic proportional flow control structure
Structure Type: Integral segmented integrated valve body, integrated built-in function valve groups including boom section, arm section, bucket section, left travel section, right travel section, swing section, flow merging & regeneration, straight travel, swing priority
II. Core Function Definition
This valve serves as the flow distribution and movement control center of the whole machine hydraulic system. Matching large-flow high-pressure oil output from the K7V main pump, it receives pressure signals from the pilot pump and electronic proportional signals from the vehicle ECU to distribute flow precisely and control movements of all machine actuators, suitable for heavy-load combined mining operations:
Proportional Independent Directional Control for Five Movements
It separately controls boom raise/lower, arm retract/extend, bucket curl/dump, left travel, right travel, swing start/stop. Spool stroke varies linearly with pilot pressure, enabling fine adjustable movement speed and excellent coordination of combined actions.
Straight Travel Function
When traveling is combined with bucket/boom operation, it automatically splits flow equally from two main pumps to maintain straight travel without deviation, delivering stable control during heavy-load climbing and traveling while digging.
Swing Priority Logic
When swing operates simultaneously with boom and arm movements, flow is preferentially allocated to the swing mechanism to meet demands for fast slewing during truck loading and improve loading efficiency.
Energy-Saving Hydraulic Regeneration Circuit for Boom & Arm
Potential energy is recovered during boom lowering and arm retraction; high-pressure return oil is reused directly to reduce oil supply consumption of the main pump, cut overflow heat generation, achieve 6%~11% fuel saving and relieve chronic overheating issues of ultra-large excavators.
Large-Flow Output via Dual-Pump Merging
Under heavy digging and full-bucket lifting conditions, flow from two main pumps merges and feeds one single actuator to instantly boost digging torque and lifting power, ideal for hard rock excavation and heavy-duty loading scenarios.
Built-In Overload Relief Protection
Each spool section is equipped with built-in overload relief valve and makeup check valve, releasing pressure instantly to buffer impact loads, preventing high-pressure rupture of cylinders and motors, suppressing cavitation caused by oil starvation and protecting the entire set of hydraulic actuators.
Electronic Proportional Flow Matching
Solenoid proportional valve receives current signals from the vehicle controller in real time to adaptively match displacement output of the main pump, realizing precise pump-valve matching, reducing throttling loss and lowering system heat generation.
III. Overall Structure & Material Classification of Key Components
1. Overall Structural Layout (From Oil Inlet End to Actuator Cylinder Ports)
Dual main pump inlet passages → Main overflow valve block → Segmented valve body assembly (Swing Section → Left Travel Section → Right Travel Section → Bucket Section → Arm Section → Boom Section) → Main spool assembly for each section → Overload relief valve + Makeup check valve → Inlet & outlet ports for actuator cylinders → Main return passage → Tank return port, pilot control port, electronic proportional solenoid valve group, drain port, mounting flange, pressure test couplings
2. Material & Heat Treatment Technology for Core Components
Main Control Spool: High-toughness nitrided alloy steel treated with overall ion nitriding and precision mirror honing, micron-level fit clearance, ultra-low internal leakage, resistance to scratching by oil contaminants and fatigue wear, suitable for high-pressure high-frequency reversing service.
Valve Block Body: Integrally forged high-strength cast steel. Internal flow channels are optimized via CFD fluid simulation for low flow resistance and sufficient pressure margin, resisting high-pressure deformation and eliminating oil seepage & leakage of valve body.
Spool Sleeve Assembly: Precision press-fit wear-resistant alloy with wear liner structure. Clearance variation is minimal after long-term high-frequency reciprocating movement, ensuring long-term stable response consistency of valve group.
Overload Relief Spool & Check Valve Assembly: Quenched stainless steel with lapped sealing cone surface, reliable sealing, fast response for impact pressure relief, anti-cavitation and anti-erosion performance.
Electronic Proportional Solenoid: 24V special electromagnetic coil for construction machinery with waterproof sealed packaging, dust & moisture resistance, wide temperature adaptability, high linearity between current and stroke, sensitive signal response.
Complete Sealing Assembly: Composite seals consisting of imported fluororubber and PTFE back-up rings, pressure and extrusion resistant, adaptable to wide temperature range of -22℃~+99℃, resistant to aging caused by high-temperature hydraulic oil, preventing internal and external end-face leakage.
Mounting Fastening Bolts: High-strength quenched & tempered alloy fasteners, resistant to loosening under severe mining vibration, maintaining structural stability without deformation under long-term heavy loads.
IV. Precise Technical Parameters
Matching Model: Kawasaki KMX36 Series Large-Flow Main Control Valve
Maximum Working Pressure: 34.3MPa (343bar)
Peak Shock Pressure: 37.5MPa
Rated Flow Capacity Per Section: 550L/min
System Type: Open-Center Load Sensing Hydraulic System
Control Mode: Pilot Hydraulic Control + Electronic Proportional Dual Control
Operating Voltage: DC24V standard voltage for vehicle electronic control
Applicable Hydraulic Oil: 46#/68# anti-wear high-pressure hydraulic oil for construction machinery, oil cleanliness required NAS Class 8 or finer
Applicable Oil Temperature Range: -22℃ ~ +99℃, suitable for extreme high and low temperature mining environments in winter and summer
Protection Class: IP54, dust-proof, splash-proof against muddy water and oil contamination intrusion
Built-In Integrated Functions: Straight travel, swing priority, boom regeneration, arm regeneration, dual-pump flow merging, overload protection, makeup anti-cavitation protection
Net Weight of Assembly: Approx. 215kg
Structural Advantage: Compact integrated layout with simplified pipelines, low pressure loss and excellent coordination for combined actions, compatible with large-flow high-pressure hydraulic systems of ultra-large excavators
V. Core Product Advantages
1. Precise Interchangeability Against Original Factory Part Code
With Sany material code 150602080013A and valve body model KMX36NAE/P45203A, the mounting hole positions, inlet/outlet port orientation, pilot port layout, pin definition of electronic plug and internal oil circuit logic of spool match 100% with original installation structure of SY1250H and SY350H. No valve body modification, pipeline alteration or oil circuit rework is required for direct full-unit replacement with zero assembly tolerance, consistent with original factory calibrated pump-valve matching parameters.
2. Original Kawasaki KMX36 Large-Flow Heavy-Duty Design with Superior Mining Durability
Developed specifically for large-flow working conditions of hundred-ton ultra-large excavators, it features large-diameter flow channels and low pressure loss design, resisting heat buildup and pressure stagnation during long continuous heavy digging operations. Improved contamination resistance grade of spool adapts to mining hydraulic oil with excessive impurities, lowering failure rates of spool sticking and action drift for longer overhaul intervals.
3. Multi-Function Integrated Valve Group Simplifying Hydraulic Pipeline Layout
Flow merging, regeneration, priority control, straight travel and overload protection are all internally integrated, eliminating numerous external auxiliary valve blocks and hose joints to reduce leakage points. Neat engine compartment layout reduces frequency of oil leakage maintenance in later service.
4. Dual Control Mode (Electronic + Pilot) with Excellent Control Precision
Precise flow regulation via electronic proportional control realizes energy saving at idle and sufficient power under heavy loads. Pilot emergency control enables basic operation when electronic control fails to improve overall machine reliability. Optimized flow split logic for combined actions ensures smooth interference-free operation during loading, digging and traveling with delicate, silky operation feel.
5. Modular Segmented Valve Body with Controllable Maintenance Cost
Independent segmented spool section structure allows disassembly and individual replacement of damaged single-section spools, relief valves and solenoid valves instead of replacing the entire main valve assembly, greatly cutting overhaul costs. Multiple reserved pressure test ports enable convenient and intuitive pressure detection and troubleshooting.
VI. Key Points for Installation & Replacement
- Complete System Pressure Relief: Shut down the engine, repeatedly actuate all control levers to release residual high pressure inside hydraulic system, close the shut-off valve of hydraulic oil tank, disconnect the negative terminal of the storage battery and implement safety protection measures for high-pressure hydraulic work.
- Classified Pipeline Disassembly: Remove high-pressure inlet hoses of two main pumps, working hoses of each cylinder, pilot control hoses, main return hose and electronic wiring harness plugs in sequence, mark each pipeline one by one to prevent reverse connection.
- Lifting & Removal of Old Valve: Loosen fixing bolts at the base of multi-way valve, lift out the old multi-way valve assembly steadily with dedicated lifting rigging; clean oil stains, rust and contaminants on the mounting base plane and inspect shock-absorbing pads for damage and deformation.
- Positioning Assembly of New Valve: Install brand-new shock-absorbing sealing gasket on bottom surface of valve group, align positioning pins for smooth seating, tighten fixing bolts evenly in diagonal multiple passes to prevent valve body torsion deformation caused by eccentric stress.
- Reassembly of Pipelines & Wiring Harness: Restore all hydraulic hoses one by one according to marks, replace all O-rings at joints with new ones and tighten evenly; plug in all electronic connectors and wrap for waterproof protection.
- Oil Filling, Air Bleeding & No-Load Running-In: Fill qualified hydraulic oil, open tank valve, operate all movements repeatedly at low idle speed to evacuate air inside valve body and pipelines, conduct 30-minute no-load running-in, check valve body and joints for oil seepage, abnormal noise and vibration.
- Calibration & Acceptance of Whole Machine: Connect external pressure gauges to verify whether main system pressure, overload relief pressure and pilot pressure conform to original factory standards. Installation is qualified if single actions and combined actions run smoothly without sluggishness, insufficient power, deviation or jitter.
VII. Common Faults, Root Causes & Operational Hazards
Slow & Weak Movements, Insufficient Flow for Single Action, Failure to Build System Pressure
Causes: Excessive internal leakage from worn spools, premature pressure relief of overload relief valve, oversized clearance from scratched valve bore, clogged oil inlet
Hazard: Sharp drop of digging efficiency during long-term operation, slipping during heavy lifting and declining overall machine productivity.
Mutual Interference of Combined Actions, Action Drift, Travel Deviation
Causes: Stuck spool, stuck straight travel valve, offset adjustment of swing priority valve, abnormal signals of proportional solenoid valve
Hazard: Awkward control during loading and combined operations, inability to travel straight due to deviation.
Widespread Oil Seepage & Leakage on Valve Body and Pipe Joints
Causes: Extrusion damage of aged seals, uneven torque of assembly bolts, micro-cracks from valve body impact, insufficient tightening of joints
Hazard: Oil leakage contaminates engine compartment; insufficient oil supply causes air ingestion and wear of main pump with high repair costs.
Jittery, Sticky Movements & Spool Binding
Causes: Spool jammed by oil contaminants, sludge & carbon buildup, fluctuating pilot pressure
Hazard: Severe impact and jitter during operation of cylinders, prone to damage of pin shafts and structural components.
Abnormally High Hydraulic Oil Temperature & Frequent System Overflow
Causes: Stuck regeneration circuit, excessive throttling loss, abnormal operation of flow merging valve, excessive internal leakage inside valve body
Hazard: High temperature accelerates deterioration of hydraulic oil and seal aging, easily triggering extensive damage to main pump and motors.
Electronic Control Malfunction, Uncontrolled Movements or No Response of Single Action
Causes: Burned proportional solenoid valve, loose or short-circuited wiring harness, water ingress & dampness of plugs
Hazard: Potential safety hazards from uncontrolled movements; partial machine action paralysis leading to downtime and production loss.
VIII. One-Stop Supporting Spare Parts List (Complete Matching Parts for Main Control Valve)
- Same-model KMX36NAE/P45203A multi-way valve assembly, original replacement valve body from Kawasaki
- Overhaul kits for main spool & sleeve of each section, overload relief valve and makeup check valve assembly
- Electronic proportional solenoid valve, electromagnetic coil and complete plug & wiring harness assembly
- Complete oil seal repair kit, end-face sealing gaskets and segmented valve body sealing components for multi-way valve
- Pressure test couplings, shock-absorbing base pads, mounting bolts and fastener accessories
- Matching hydraulic accessories for main pumps, cylinders, swing motors and travel motors of SY1250H/SY350H
- Complete assembly of machine pilot handles, pressure sensors, main pump electronic regulators and pilot pipelines
You May Also Like
Compound Pump Assembly for Sany SY980H Excavator R902563676 / Double Plunger Pump Assembly R902563679, Sany Material Code: 60328848 / 60328849, Suitable for SY980H.
Detailed Product Introduction of Compound Dual Axial Piston Pump Assembly for Sany SY980H Excavator I. Core Coding & Compatibility Information Rexroth OEM Part Numbers Complete Compound Pump Assembly: R902563676 Main Dual Piston Pump Body: R902563679 Sany Internal Material Codes (Exclusive for ...
Scania D16 Engine Cooling Pump Assembly 02-25-6200 (Water Pump), Sany Material Code: 160102160020A025, Compatible with SY980 / SY1250 / SY1350.
Detailed Product Introduction of Scania D16 Engine Cooling Pump Assembly (Water Pump) Part No.02-25-6200 I. Core Basic Coding Information OEM Part Number: 02-25-6200 (Dedicated cooling water pump assembly for Scania D16/DC16 engines) Sany Internal Material Code: 160102160020A025 (Original supporting ...
Loose Gear Parts for Swing & Travel Reducers
Detailed Introduction to Loose Gear Components for Swing & Travel Reducers I. Product Overview Our company keeps full sets of loose gear parts for swing reducers and travel reducers of all excavator series in stock. They fit all tonnage excavators of mainstream brands including Sany, CAT, XCMG, ...
Genuine XCMG335/490 Undercarriage Parts, full range of XCMG spare parts available.
Genuine XCMG Undercarriage Parts & Full Range XCMG OEM Spare Parts I. Product Overview Our company supplies full sets of genuine XCMG undercarriage parts (four wheels & one track) in stock. Meanwhile, we provide one-stop full-series OEM spare parts for XCMG excavators, wheel loaders, bulldozers, ...
Contact Us
You Can Contact Us At Anytime!
