Core Application & Target User Overview
This guide covers hydraulic components specifically compatible with construction machinery (e.g., excavators, loaders), industrial hydraulic presses, CNC machine tools, and automated production lines equipped with A10VS0/A4VS0 series pumps and 4WRPEH/4WE series valves. Targeting hydraulic system maintenance engineers, equipment repair workshops, and manufacturing plant procurement teams, it addresses core needs including precise component matching, troubleshooting of system malfunctions, and ensuring long-term stable equipment operation. All components comply with international standards such as ISO 4401 (hydraulic valve specifications), ISO 13709 (axial piston pump requirements), and DIN 24342 (hydraulic component mounting standards), providing a comprehensive reference for both procurement decision-making and technical problem-solving.
Axial Piston Pumps
Axial piston pumps serve as the power core of high-pressure hydraulic systems, converting mechanical energy into hydraulic energy. Premature wear, internal leakage, or flow instability can lead to insufficient system pressure, reduced equipment efficiency, and costly production downtime. Our pumps feature high-strength alloy materials and precision machining, ensuring stable output, high pressure resistance, and long service life, ideal for high-load scenarios like construction machinery and industrial forging equipment.
Field Fault Maintenance Case
A manufacturing plant reported that a hydraulic press equipped with the A4VS0250DR30RPPB13N00 pump experienced frequent pressure drops. Inspection revealed severe wear of the pump's valve plate caused by using hydraulic oil that did not meet ISO 4406 Class 13/10 cleanliness standards. After replacing the pump with our compliant product and upgrading the oil filtration system, the hydraulic press restored stable operation, achieving 4,000+ hours of trouble-free work.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | A10VS0100DRS32RVPB12N00-S1439 | Pump body: 35CrMo alloy steel (nitriding treatment); Piston: 20CrMnTi alloy steel (carburizing and quenching, HRC 60-64); Swash plate: 42CrMo alloy steel with tungsten carbide coating; Valve plate: Copper-lead alloy with graphite self-lubricating layer; Seal: Fluororubber (FKM); Bearing: GCr15 high-carbon chromium steel | 1. Piston-cylinder pair wear due to contamination of hydraulic oil with solid particles (≥0.02mm); 2. Swash plate fatigue cracking caused by long-term operation at 90%+ rated pressure | 1. Replace hydraulic oil filter every 300 operating hours and ensure oil cleanliness meets ISO 4406 Class 13/10; 2. Install a pressure monitoring device to avoid continuous operation above 85% of rated pressure and calibrate the pump every 1,500 hours per ISO 13709 Clause 6.3 |
2 | A4VS0250DR30RPPB13N00 | Pump body: 35CrMo alloy steel (nitriding treatment); Piston: 20CrMnTi alloy steel (carburizing and quenching); Swash plate: 42CrMo alloy steel; Shaft: 40CrNiMo alloy steel; Seal: FKM; Bearing: GCr15 | 1. Valve plate wear due to misalignment between pump and motor shafts (radial runout >0.05mm); 2. Seal leakage accelerated by hydraulic oil temperature exceeding 85°C | 1. Perform laser alignment of pump and motor shafts quarterly in accordance with ISO 13709 Clause 5.2; 2. Equip the system with an oil cooler to maintain oil temperature ≤80°C and check oil level weekly |
3 | PV180R1K1T1WMMC | Pump body: 35CrMo alloy steel (nitriding treatment); Piston: 20CrMnTi alloy steel (carburizing and quenching); Swash plate: 42CrMo alloy steel with tungsten carbide coating; Shaft: 40CrNiMo alloy steel; Seal: FKM; Bearing: GCr15 | 1. Swash plate ablation due to metal particle contamination in hydraulic oil; 2. Shaft deformation caused by uneven mounting torque during installation | 1. Use hydraulic oil that meets ISO 4406 Class 13/10 cleanliness requirements; 2. Tighten mounting bolts uniformly with a torque wrench according to manufacturer's specifications and recheck torque monthly |
4 | PVWJ-034-A1UV-LDFY-P-1NNNN-CP | Pump body: 35CrMo alloy steel; Piston: 20CrMnTi alloy steel (carburizing and quenching); Valve plate: Cast iron with hardened surface; Seal: FKM; Bearing: GCr15; Shaft: 40Cr alloy steel | 1. Valve plate wear caused by frequent pressure cycling; 2. Seal leakage due to incompatible hydraulic oil additives | 1. Inspect valve plate every 800 operating hours and replace if wear exceeds 0.05mm; 2. Use hydraulic oil compatible with FKM seals in accordance with ASTM D471 |
Hydraulic Motors
Hydraulic motors convert hydraulic energy into mechanical energy to drive equipment movement. Malfunctions such as motor stall, internal leakage, or torque reduction can cause equipment downtime and reduced productivity. Our hydraulic motors adopt high-strength materials and precision machining, ensuring high torque output, stable operation, and reliable sealing, suitable for heavy-duty applications such as excavator travel mechanisms, conveyor systems, and industrial rotary equipment.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | T6EC-072-028-1R00-B1 | Motor housing: 35CrMo alloy steel; Rotor: 20CrMnTi alloy steel (carburizing and quenching); Stator: 42CrMo alloy steel; Seal: FKM; Bearing: GCr15; Shaft: 40CrNiMo alloy steel | 1. Bearing damage due to insufficient lubrication from oil level shortage; 2. Rotor stall from foreign object intrusion | 1. Check oil level weekly and clean oil supply pipelines monthly to prevent blockages; 2. Install a 10μm precision filter at the motor inlet |
2 | TG0280EW460AAAB | Motor housing: 35CrMo alloy steel; Rotor: 20CrMnTi alloy steel (carburizing and quenching); Stator: 42CrMo alloy steel; Seal: FKM; Bearing: GCr15; Shaft: 40Cr alloy steel | 1. Housing deformation from uneven installation force; 2. Seal aging from high-temperature operation (oil temperature >85°C) | 1. Tighten mounting bolts uniformly with a torque wrench in accordance with DIN 24342 Clause 6.3; 2. Install a heat shield near high-temperature components and monitor oil temperature daily |
Directional Control Valves
Directional control valves regulate the flow direction of hydraulic oil to realize the commutation, start, and stop of actuators. Slow response, internal leakage, or valve core jamming can cause uncoordinated equipment movements, reduced operational precision, and even safety hazards. Our valves adopt precision-ground spools and multi-layer sealing structures, ensuring fast response (≤0.1s), low internal leakage (≤3ml/min), and strong anti-vibration performance, suitable for high-vibration industrial environments such as construction machinery and hydraulic presses.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | 4WE6E6X/EG24N9K4 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment, surface hardness HV ≥850); Spring: 60Si2Mn alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation (Class F heat resistance) | 1. Valve core jamming caused by hydraulic oil contamination and sludge accumulation; 2. Solenoid coil burnout due to voltage fluctuation (deviation >±10%) | 1. Replace the hydraulic oil filter every 300 operating hours and flush the system every 1,200 operating hours; 2. Install a voltage stabilizer in the control circuit and monitor voltage weekly in accordance with DIN 40050-1 |
2 | 4WEH22J7X/6EG24N9ETS2K4B10 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation (feedback control design); Spool position sensor: High-precision Hall sensor | 1. Solenoid coil damage due to electromagnetic interference (EMI); 2. Internal leakage caused by valve seat wear | 1. Route signal lines separately from power cables to avoid EMI; 2. Replace valve seat every 1,500 operating hours and calibrate the valve per manufacturer's specifications |
3 | 0811404634 4WRPEH6C3B40L-2X/G24K0/F1M | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation; Pressure compensation mechanism: 40Cr alloy steel | 1. Pressure compensation mechanism jamming due to hydraulic oil sludge; 2. Solenoid coil failure due to moisture intrusion | 1. Flush the hydraulic system every 1,000 operating hours; 2. Seal electrical interfaces with silicone sealant and install the valve in a moisture-proof control cabinet |
4 | 4WREE6E162X/G24K31/A1V655 R900950342 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation; Servo control module: Precision electronic components | 1. Servo control module damage due to voltage spikes; 2. Valve core wear caused by frequent commutation | 1. Install a surge protector in the control circuit; 2. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating hours and inspect wear every 800 hours |
Pressure Control Valves
Pressure control valves are core safety components that stabilize system pressure, prevent overpressure damage to components, and adjust pressure for different working conditions. Malfunctions such as pressure instability, valve jamming, or leakage can lead to component fatigue failure and even catastrophic system breakdowns. Our pressure control valves adopt precision pressure-adjusting mechanisms, ensuring accurate pressure control (error ≤±2%) and complying with ISO 4401 Clause 7.2 requirements, providing reliable overpressure protection for hydraulic systems in construction, mining, and industrial applications.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | DBDS10P1X/200 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Adjusting screw: 40Cr alloy steel with lock nut | 1. Valve core wear caused by high-pressure oil flow erosion; 2. Adjusting screw loosening due to long-term vibration | 1. Install the valve in a low-flow turbulence area and ensure correct flow direction; 2. Lock the adjusting screw with a lock nut after pressure setting and recheck the torque monthly |
2 | DBDS20P1X/315 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Valve seat: Hardened alloy steel | 1. Valve seat wear caused by frequent overpressure relief; 2. Seal leakage caused by high-temperature oil (oil temperature >85°C) | 1. Avoid frequent overpressure operation and check system pressure regularly; 2. Install an oil cooler to control oil temperature ≤80°C and inspect seals quarterly |
3 | DBDS10P1X/315 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Adjusting screw: 40Cr alloy steel | 1. Valve core jamming caused by hydraulic oil contamination; 2. Spring fatigue due to long-term compression | 1. Replace the hydraulic oil filter every 300 operating hours; 2. Inspect spring elasticity every 600 operating hours and replace if deformation is found |
4 | DBDS20K1X/050 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Adjusting screw: 40Cr alloy steel | 1. Valve core jamming due to rust particles in the hydraulic oil; 2. Seal leakage caused by pressure cycling | 1. Add an anti-rust additive to the hydraulic oil; 2. Inspect the seals quarterly and replace if signs of aging (cracking, hardening) appear |
5 | DBDH10P1X/315 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Diaphragm: PTFE | 1. Diaphragm damage caused by pressure impact; 2. Internal leakage caused by valve core wear | 1. Install a pressure buffer upstream to absorb pressure shocks; 2. Replace the valve core every 1,200 operating hours if wear exceeds 0.03mm |
Flow Control Valves & Proportional Valves
Flow control valves and proportional valves regulate the flow rate of hydraulic oil to ensure stable and accurate movement of actuators, while proportional valves enable stepless flow adjustment for high-precision applications. Malfunctions can lead to inconsistent actuator speed, reduced operational precision, and energy waste. Our valves adopt precision flow-regulating orifices and advanced servo control technology, ensuring accurate flow control (error ≤±3%) and suitable for high-precision industrial applications such as CNC machine tools and automated production lines.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | D1FBE01CC0NS00 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Valve core wear caused by high-velocity oil flow; 2. Seal leakage caused by chemical degradation from incompatible oil additives | 1. Install the valve in a low-flow velocity area and ensure correct flow direction; 2. Use hydraulic oil compatible with FKM seals in accordance with ASTM D471 |
2 | D3FBE02MC0VKW0 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Solenoid coil: Copper wire with epoxy resin encapsulation; Flow sensor: Precision differential pressure sensor | 1. Solenoid coil failure due to moisture intrusion; 2. Valve core jamming due to sludge accumulation | 1. Seal the valve's electrical interface with silicone sealant; 2. Flush the hydraulic system every 1,000 operating hours and replace the filter element |
3 | 2FRM6B362X/16QRV-1N001 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Flow-regulating orifice: Tungsten carbide | 1. Flow-regulating orifice clogging due to hydraulic oil contamination; 2. Seal leakage caused by high-pressure operation | 1. Use hydraulic oil that meets ISO 4406 Class 13/10 cleanliness requirements; 2. Avoid continuous operation above 80% of rated pressure and inspect seals quarterly |
4 | 2FRM6B362X/1.5QMV-1N001 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Flow-regulating orifice: Ceramic | 1. Flow-regulating orifice wear caused by long-term high-velocity oil flow; 2. Valve core jamming due to foreign object intrusion | 1. Install a 5μm precision filter at the valve inlet; 2. Inspect the flow-regulating orifice every 800 operating hours and replace if wear exceeds 0.02mm |
Check Valves & Shuttle Valves
Check valves and shuttle valves ensure one-way flow of hydraulic oil and prevent reverse flow, which is crucial for system stability and component protection. Malfunctions such as reverse leakage or valve jamming can lead to system pressure loss and component damage. Our valves adopt precision-ground valve cores and high-elasticity springs, ensuring reliable one-way sealing and fast response, suitable for various hydraulic systems such as hydraulic power units and construction machinery.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | Z2S6A16X/V | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core wear caused by reverse flow impact; 2. Seal leakage due to high-temperature oil | 1. Ensure correct installation direction to avoid reverse flow; 2. Install an oil cooler to control oil temperature ≤80°C |
2 | Z2S616X/V | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Valve seat: Hardened alloy steel | 1. Valve seat wear caused by long-term one-way flow scouring; 2. Valve core jamming due to hydraulic oil contamination | 1. Replace the hydraulic oil filter every 300 operating hours; 2. Inspect valve seat wear every 800 operating hours and replace if necessary |
3 | Z2S1013X | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Spring fatigue due to long-term compression; 2. Seal leakage caused by pressure cycling | 1. Inspect spring elasticity every 600 operating hours and replace if deformation is found; 2. Inspect seals quarterly and replace if aged |
Hydraulic Cylinders & Accessories
Hydraulic cylinders convert hydraulic energy into linear mechanical energy to drive linear motion of equipment. Malfunctions such as cylinder rod wear, internal leakage, or seal damage can cause reduced thrust and unstable movement. Our hydraulic cylinder accessories adopt high-strength materials and wear-resistant coatings, ensuring reliable performance and long service life, suitable for hydraulic cylinders in construction machinery, industrial presses, and automated production lines.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | SL10PA14X | Piston rod: 42CrMo alloy steel (hard chrome plating, thickness 0.05-0.1mm); Piston: Ductile iron with FKM seal; Guide sleeve: Bronze alloy | 1. Piston rod wear caused by dust and foreign object scouring; 2. Seal leakage due to incompatible hydraulic oil | 1. Install a dust cover at the cylinder rod end; 2. Use hydraulic oil compatible with FKM seals in accordance with ASTM D471 |
2 | SL30PA14X/ | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with FKM seal; Guide sleeve: Bronze alloy; Cylinder tube: 20# seamless steel tube (honed) | 1. Cylinder tube wear caused by piston eccentricity; 2. Seal aging from high-temperature operation | 1. Ensure piston rod is correctly aligned during installation; 2. Install an oil cooler to control oil temperature ≤80°C and inspect seals quarterly |
3 | SL10PA24X | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with FKM seal; Guide sleeve: Bronze alloy | 1. Piston rod corrosion caused by outdoor exposure; 2. Seal leakage caused by pressure impact | 1. Apply anti-corrosion coating to the piston rod for outdoor use; 2. Install a pressure buffer upstream of the cylinder |
4 | SL20PA14X/ | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with FKM seal; Guide sleeve: Bronze alloy; Cylinder tube: 20# seamless steel tube | 1. Cylinder tube wear caused by solid particle contamination; 2. Guide sleeve wear due to insufficient lubrication | 1. Replace the hydraulic oil filter every 300 operating hours; 2. Apply lubricating grease to the guide sleeve every 200 operating hours |
5 | SV10PA24X | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with FKM seal; Guide sleeve: Bronze alloy; Spring: 55CrSi alloy steel | 1. Spring fatigue due to frequent extension and retraction; 2. Piston rod wear caused by misalignment | 1. Minimize frequent rapid extension and retraction; 2. Align the cylinder correctly during installation and recheck alignment quarterly |
6 | SL20PB1-4X | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with NBR seal; Guide sleeve: Bronze alloy | 1. Seal leakage caused by high oil temperature (＞80°C); 2. Piston rod wear caused by foreign object collision | 1. Install an oil cooler to control oil temperature; 2. Install a protective sleeve on the piston rod |
7 | SL10PB1-4X | Piston rod: 42CrMo alloy steel (hard chrome plating); Piston: Ductile iron with NBR seal; Guide sleeve: Bronze alloy | 1. Seal aging due to chemical degradation from incompatible oil additives; 2. Guide sleeve wear due to long-term use | 1. Use hydraulic oil compatible with NBR seals; 2. Replace the guide sleeve every 1,500 operating hours |
Hydraulic Accumulators & Accessories
Hydraulic accumulators store hydraulic energy, absorb pressure shocks, and compensate for leakage, which is crucial for system stability and energy efficiency. Malfunctions such as gas leakage, bladder damage, or housing corrosion can lead to system pressure instability and energy waste. Our accumulators adopt high-quality bladders and corrosion-resistant materials, ensuring reliable performance and long service life, suitable for hydraulic systems in construction machinery, industrial presses, and automated production lines.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | SB330-50A1/112A9-330A | Housing: Carbon steel with anti-corrosion coating; Bladder: Nitrile rubber (NBR); Valve core: 42CrMo alloy steel; Seal: FKM | 1. Bladder damage caused by excessive pressure; 2. Housing corrosion caused by outdoor exposure | 1. Monitor system pressure regularly to avoid exceeding the accumulator's rated pressure; 2. Install a protective cover for outdoor use and inspect corrosion monthly |
2 | SB32LT/22-112 | Housing: Aluminum alloy; Bladder: EPDM rubber; Valve core: 42CrMo alloy steel; Seal: FKM | 1. Bladder aging caused by high-temperature oil; 2. Seal leakage caused by vibration | 1. Install an oil cooler to control oil temperature ≤75°C; 2. Tighten the valve connection monthly and apply anti-loosening thread lock compound |
3 | SB5LT-112 | Housing: Aluminum alloy; Bladder: EPDM rubber; Valve core: 42CrMo alloy steel; Seal: FKM | 1. Bladder damage caused by hydraulic oil contamination; 2. Valve core jamming due to rust | 1. Use hydraulic oil that meets ISO 4406 Class 13/10 cleanliness requirements; 2. Add an anti-rust additive to the hydraulic oil |
4 | SB2.5LT-112 | Housing: Aluminum alloy; Bladder: EPDM rubber; Valve core: 42CrMo alloy steel; Seal: FKM | 1. Seal leakage caused by pressure cycling; 2. Bladder fatigue due to frequent energy storage and release | 1. Inspect seals quarterly and replace if necessary; 2. Avoid frequent rapid energy storage and release cycles |
Hydraulic Valves & System Accessories
Hydraulic valve accessories (solenoid valve bases, connectors, etc.) and system accessories are essential for ensuring stable system operation, reliable connection, and easy maintenance. Malfunctions can lead to system leakage, poor connection, or valve failure. Our accessories adopt high-quality materials and standard interfaces, ensuring seamless compatibility with main components and reliable performance, suitable for various hydraulic systems.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | 026-99946-H | Housing: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core jamming caused by hydraulic oil contamination; 2. Seal leakage caused by high-temperature operation | 1. Replace the hydraulic oil filter every 300 operating hours; 2. Install a heat shield if the accessory is near high-temperature components |
2 | 5001716 | Housing: 304 stainless steel; Diaphragm: EPDM rubber; Spring: 55CrSi alloy steel; Connector: Copper alloy | 1. Diaphragm damage caused by pressure impact; 2. Housing corrosion caused by corrosive media | 1. Install a pressure buffer upstream; 2. Use corrosion-resistant hydraulic oil and inspect for corrosion monthly |
3 | 3WMM10A3X/F | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Valve core jamming due to foreign object intrusion; 2. Seal leakage caused by bolt loosening | 1. Clean the installation area before mounting to avoid debris entry; 2. Tighten mounting bolts uniformly with a torque wrench |
4 | ZBM3000 | Housing: Aluminum alloy; Solenoid coil: Copper wire with epoxy resin encapsulation; Connector: Brass | 1. Solenoid coil burnout due to voltage fluctuation; 2. Connector loosening due to vibration | 1. Install a voltage stabilizer in the control circuit; 2. Tighten the connector monthly and apply anti-loosening thread lock compound |
5 | ZBE06-05 | Housing: Aluminum alloy; Connector: Brass; Seal: FKM | 1. Seal leakage caused by vibration; 2. Connector corrosion caused by moisture | 1. Install a vibration damping pad under the accessory; 2. Seal the connector with silicone sealant to prevent moisture intrusion |
6 | ZBE01 | Housing: Aluminum alloy; Connector: Brass; Seal: FKM | 1. Seal aging due to long-term use; 2. Connector loosening due to frequent equipment movement | 1. Replace the seal annually; 2. Retighten the connector every 3 months |
Servo Valves & Precision Control Components
Servo valves and precision control components are core components of high-precision hydraulic systems, enabling precise control of flow and pressure. Malfunctions such as control signal interference, valve core jamming, or internal leakage can lead to reduced system precision and unstable operation. Our components adopt advanced servo control technology and high-precision machining, ensuring accurate control and reliable performance, suitable for high-precision applications such as CNC machine tools and automated production lines.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | D634-319C | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Servo coil: Copper wire with epoxy resin encapsulation; Feedback sensor: High-precision LVDT sensor | 1. Servo coil damage due to electromagnetic interference; 2. Valve core jamming caused by hydraulic oil contamination | 1. Route control signal lines with shielded cables and ground them properly; 2. Use hydraulic oil that meets ISO 4406 Class 12/9 cleanliness requirements and flush the system every 1,500 operating hours |
2 | D661-4651 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Servo coil: Copper wire with epoxy resin encapsulation; Control module: Precision electronic components | 1. Control module damage due to voltage spikes; 2. Internal leakage caused by valve seat wear | 1. Install a surge protector in the control circuit; 2. Replace valve seat every 2,000 operating hours and calibrate the valve per manufacturer's specifications |
3 | D953-2017/c D953-2017/10 | Housing: Aluminum alloy; Control circuit board: High-temperature resistant FR-4 material; Connector: Gold-plated brass; Seal: FKM | 1. Control circuit board damage due to moisture intrusion; 2. Connector oxidation caused by high humidity | 1. Install the component in a dry, low-humidity environment (relative humidity ≤60%); 2. Inspect the connector quarterly and clean it with alcohol if oxidation is found |
Procurement Guidance
Our hydraulic components are manufactured in strict compliance with international standards such as ISO 4401, ISO 13709, and DIN 24342, with complete quality certification documents and material traceability reports. We provide professional technical support, including component selection based on your specific equipment models and application scenarios, as well as on-site maintenance consultation. Whether you need single-component replacements or bulk procurement, we are committed to delivering reliable products and tailored solutions. Contact us today to discuss your hydraulic component requirements and obtain optimized procurement plans.
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