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, PVM/PVQ series piston pumps, and DG4V/DGMX 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 construction site reported that a hydraulic excavator equipped with the A4VS0250DR30RPPB13N00 pump experienced frequent pressure drops during heavy-load operation. Inspection revealed severe wear of the valve plate caused by misalignment between the pump and motor shafts (radial runout >0.05mm), violating ISO 13709 Clause 5.2. After replacing the pump with our compliant product and performing laser alignment, the excavator restored stable operation, achieving 5,000+ 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 | PVQ13A2RSE1S20C1412 02-341644 | Pump body: 35CrMo alloy steel (nitriding treatment); Piston: 20CrMnTi alloy steel (carburizing and quenching); Swash plate: 42CrMo alloy steel with ceramic coating; Valve plate: Copper-lead alloy; Seal: FKM; Bearing: GCr15 | 1. Piston wear caused by oxidation sludge accumulation in hydraulic oil; 2. Shaft deformation due to uneven mounting torque during installation | 1. Replace hydraulic oil annually and add anti-oxidation additives; 2. Tighten mounting bolts uniformly with a torque wrench according to manufacturer's specifications and recheck torque monthly |
4 | 02-335172 PVM131ER10GS02AAA28000000A0A | Pump body: 35CrMo alloy steel; Piston: 20CrMnTi alloy steel (carburizing and quenching); Swash plate: 42CrMo alloy steel; Shaft: 40CrNiMo alloy steel; Seal: FKM; Bearing: GCr15 | 1. Swash plate ablation due to metal particle contamination in hydraulic oil; 2. Seal leakage caused by high-temperature hydraulic oil (＞85°C) | 1. Use hydraulic oil that meets ISO 4406 Class 13/10 cleanliness requirements; 2. Install an oil cooler to control oil temperature ≤80°C |
5 | 02-346335 PVM018ER02AE01AAA28000000A0A | Pump body: 35CrMo alloy steel; Piston: 20CrMnTi alloy steel (carburizing and quenching); Valve plate: Copper-lead alloy; Seal: FKM; Bearing: GCr15 | 1. Valve plate wear caused by frequent pressure cycling; 2. Bearing damage due to insufficient lubrication from oil level shortage | 1. Inspect valve plate every 800 operating hours and replace if wear exceeds 0.05mm; 2. Check oil level weekly and clean oil supply pipelines monthly to prevent blockages |
6 | PVM074ER09GS02AAA28000000A0A 123AL00691A | Pump body: 35CrMo alloy steel (nitriding treatment); Piston: 20CrMnTi alloy steel (carburizing and quenching); Swash plate: 42CrMo alloy steel; Shaft: 40Cr alloy steel; Seal: FKM; Bearing: GCr15 | 1. Piston-cylinder pair wear due to hydraulic oil contamination; 2. Swash plate fatigue caused by long-term operation at rated pressure | 1. Replace the oil filter every 300 operating hours; 2. Avoid continuous operation at rated pressure for more than 8 hours and take 30-minute intervals |
Vane Pumps
Vane pumps offer stable flow output and low noise, making them suitable for medium-pressure hydraulic systems in precision machinery and automated production lines. Malfunctions such as vane wear, rotor groove damage, or internal leakage can lead to reduced system precision and unstable actuator movement. Our vane pumps adopt high-wear-resistance vane materials and precision-machined rotors, ensuring reliable performance and long service life.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | F125-60 | Pump body: Aluminum alloy (hard anodizing treatment); Rotor: 42CrMo alloy steel (nitriding treatment); Vane: Powder metallurgy with molybdenum disulfide additive; Seal: FKM; Bearing: GCr15 | 1. Vane wear caused by insufficient lubrication from low oil level; 2. Rotor groove damage due to hydraulic oil contamination with hard particles | 1. Check oil level daily and maintain it within the specified range; 2. Install a 10μm precision filter at the pump inlet and replace the filter element every 300 operating hours |
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 | DG4V3SOBMUH560 | 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 | KBCG3250DZM12APE7H110 | 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 frequent commutation; 2. Seal leakage caused by uneven installation force | 1. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating hours; 2. Use a torque wrench to uniformly tighten mounting bolts per DIN 24342 Clause 6.3 |
3 | DG4V36BMUH760 | 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 | 1. Solenoid coil failure due to moisture intrusion; 2. Valve core jamming due to foreign object intrusion during maintenance | 1. Seal electrical interfaces with silicone sealant and install the valve in a moisture-proof control cabinet; 2. Clean the maintenance area thoroughly before disassembling the valve |
4 | DG4V32BLMUH760 869879 | 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. Seal aging caused by high ambient temperature (＞60°C); 2. Valve core jamming due to hydraulic oil oxidation sludge | 1. Install a heat shield if the valve is near high-temperature components; 2. Replace hydraulic oil annually and add anti-oxidation additives |
5 | DG4V32CMUH760 | 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 | 1. Solenoid coil overheating due to long-term energization; 2. Valve core wear caused by high-velocity oil flow | 1. Avoid long-term continuous energization and use a time relay for intermittent operation; 2. Install the valve in a low-flow turbulence area to reduce oil flow impact |
6 | DG4V56CJMUH620 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Valve core jamming caused by rust particles in hydraulic oil; 2. Seal leakage caused by pressure cycling | 1. Add anti-rust additives to hydraulic oil and inspect for rust particles monthly; 2. Inspect seals quarterly and replace if necessary |
7 | DG5S4046CTMUH560 | 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 | 1. Solenoid coil damage due to electromagnetic interference; 2. Valve core wear caused by frequent commutation | 1. Route control signal lines with shielded cables and ground them properly; 2. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating 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 | DGMX23PACWB40 | 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 torque monthly |
2 | RCG10B130 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Diaphragm: PTFE | 1. Diaphragm damage caused by pressure impact; 2. Valve core jamming due to hydraulic oil contamination | 1. Install a pressure buffer upstream to absorb pressure shocks; 2. Replace the hydraulic oil filter every 300 operating hours and use oil meeting ISO 4406 Class 13/10 cleanliness |
3 | DGMX23PPBHB40 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM; Adjusting screw: 40Cr alloy steel | 1. Spring fatigue due to long-term compression; 2. Seal leakage caused by high-temperature hydraulic oil (＞85°C) | 1. Inspect spring elasticity every 600 operating hours and replace if deformation is found; 2. Install an oil cooler to control oil temperature ≤80°C |
4 | DGMX25PPFWB30 880553 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM; Pressure sensor: Precision piezoelectric sensor | 1. Pressure sensor failure due to electromagnetic interference; 2. Valve core wear caused by frequent pressure adjustment | 1. Route sensor signal lines with shielded cables and ground them properly; 2. Minimize frequent pressure adjustments and calibrate the valve every 800 operating hours |
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 | DLHZOTE040V31 | 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) | 1. Valve core wear caused by high-velocity oil flow; 2. Solenoid coil failure due to moisture intrusion | 1. Install the valve in a low-flow velocity area and ensure correct flow direction; 2. Seal electrical interfaces with silicone sealant and inspect for moisture monthly |
2 | DLHZO-TE-040-L7140 | 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. Flow sensor damage due to hydraulic oil contamination; 2. Valve core jamming due to sludge accumulation | 1. Use hydraulic oil meeting ISO 4406 Class 12/9 cleanliness requirements; 2. Flush the hydraulic system every 1,000 operating hours and replace the filter element |
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 | D634-341C | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment, surface roughness Ra ≤0.02μm); 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 (EMI); 2. Valve core jamming caused by hydraulic oil contamination | 1. Route control signal lines with double-shielded cables and ground them in accordance with IEC 61000-6-2; 2. Use hydraulic oil meeting ISO 4406 Class 11/8 cleanliness requirements and flush the system every 1,500 operating hours |
Hydraulic Cartridge Valves
Hydraulic cartridge valves feature compact structure and strong interchangeability, suitable for integrated hydraulic systems in construction machinery and industrial equipment. Malfunctions such as valve core jamming, internal leakage, or seal damage can lead to system pressure loss and reduced equipment efficiency. Our cartridge valves adopt precision machining and high-quality sealing materials, ensuring reliable performance and easy maintenance.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | DGMR5A1FWB1FW30 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi 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 valve is near high-temperature components |
2 | SBV1110C024DGH | 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 | 1. Solenoid coil burnout due to voltage fluctuation; 2. Valve core wear caused by frequent commutation | 1. Install a voltage stabilizer in the control circuit; 2. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating hours |
3 | DGMC23ABCWBACW41 869628 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Seal leakage caused by vibration; 2. Valve core jamming due to foreign object intrusion | 1. Install a vibration damping pad under the valve; 2. Clean the installation area before mounting to avoid debris entry |
4 | DGMC3ATGWB41 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core wear caused by high-velocity oil flow; 2. Seal aging caused by long-term use | 1. Install the valve in a low-flow turbulence area; 2. Replace seals annually or when signs of aging appear |
5 | DGMDC3XBK41 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Valve body deformation from uneven installation force; 2. Valve core jamming due to rust particles | 1. Use a torque wrench to uniformly tighten mounting bolts; 2. Add anti-rust additives to hydraulic oil |
6 | DGMFN5XA2WB2W30 867335 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Solenoid coil failure due to moisture intrusion; 2. Valve core wear caused by frequent pressure cycling | 1. Seal electrical interfaces with silicone sealant; 2. Minimize frequent pressure cycling and inspect valve core wear every 800 operating hours |
7 | DGMFN3YA2HB2H30 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Seal leakage caused by pressure impact; 2. Valve core jamming due to sludge accumulation | 1. Install a pressure buffer upstream; 2. Flush the hydraulic system every 1,200 operating hours |
8 | DGMFN3XA2WB2W41 694414 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core wear caused by hydraulic oil contamination; 2. Spring fatigue due to long-term compression | 1. Use hydraulic oil meeting ISO 4406 Class 13/10 cleanliness; 2. Inspect spring elasticity every 600 operating hours |
9 | CVCS16D3B2910 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Seal leakage caused by uneven installation force; 2. Valve core jamming due to foreign object intrusion | 1. Tighten mounting bolts uniformly with a torque wrench; 2. Clean the installation area before mounting |
10 | DGMPC3ABMBAM41 02-139087 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Solenoid coil overheating due to long-term energization; 2. Seal aging caused by high-temperature oil | 1. Avoid long-term continuous energization and use a time relay; 2. Install an oil cooler to control oil temperature ≤80°C |
11 | DGMPC3ABKBAK41 694400 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: FKM | 1. Valve core jamming caused by rust particles; 2. Seal leakage caused by vibration | 1. Add anti-rust additives to hydraulic oil; 2. Install a vibration damping pad under the valve |
12 | DGMFN5YA2WB2W30 867332 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core wear caused by frequent commutation; 2. Seal leakage caused by pressure cycling | 1. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating hours; 2. Inspect seals quarterly and replace if necessary |
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 | CE063C08L00V | Housing: Aluminum alloy; Connector: Brass; Seal: FKM; Spring: 55CrSi alloy steel | 1. Connector loosening due to long-term vibration; 2. Seal aging caused by long-term use | 1. Tighten the connector monthly and apply anti-loosening thread lock compound; 2. Replace the seal annually |
2 | CE050C04U00V | Housing: Aluminum alloy; Connector: Brass; Seal: FKM; Spring: 55CrSi alloy steel | 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 |
3 | RE06M17T2N1R0 | 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 |
4 | D-005 | Housing: 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 |
5 | EK32M | Housing: Aluminum alloy; Solenoid coil: Copper wire with epoxy resin encapsulation; Core: 1.4021 alloy steel; Seal: FKM | 1. Solenoid coil burnout due to voltage fluctuation; 2. Core jamming due to rust | 1. Install a voltage stabilizer in the control circuit; 2. Add an anti-rust additive to the hydraulic oil and inspect the core for rust monthly |
6 | SCP064-RN-DL4-L35-SOS-000 | Housing: Aluminum alloy; Connector: Brass; Seal: FKM; Internal components: Engineering plastic with glass fiber reinforcement | 1. Seal leakage caused by high-temperature operation; 2. Internal component damage due to vibration | 1. Install a heat shield if near high-temperature components; 2. Install a vibration damping bracket for the accessory |
7 | AD901110 | Housing: Aluminum alloy; Seal: FKM; Connector: Copper alloy; Spring: 55CrSi alloy steel | 1. Connector loosening due to long-term vibration; 2. Seal aging caused by long-term use | 1. Tighten the connector monthly and apply anti-loosening thread lock compound; 2. Replace the seal annually |
8 | AD901003 | Housing: Aluminum alloy; Seal: FKM; Connector: Brass; Spring: 55CrSi alloy steel | 1. Seal leakage caused by pressure cycling; 2. Connector corrosion caused by moisture | 1. Inspect seals quarterly and replace if necessary; 2. Seal the connector with silicone sealant |
9 | AD901103 | Housing: Aluminum alloy; Seal: FKM; Connector: Brass; Spring: 55CrSi alloy steel | 1. Solenoid coil failure due to moisture intrusion; 2. Seal aging caused by high-temperature operation | 1. Seal the electrical interface with silicone sealant; 2. Install a heat shield if near high-temperature components |
10 | SC034LISO | Housing: 304 stainless steel; Seal: FKM; Connector: Brass; Spring: 55CrSi alloy steel | 1. Housing corrosion caused by corrosive media; 2. Seal leakage caused by uneven installation force | 1. Use corrosion-resistant hydraulic oil and inspect for corrosion monthly; 2. Tighten mounting bolts uniformly with a torque wrench |
11 | AC40-1/4-80 | Housing: Aluminum alloy; Connector: Brass; Seal: FKM; Spring: 55CrSi alloy steel | 1. Connector loosening due to vibration; 2. Seal leakage caused by long-term use | 1. Install a vibration damping pad under the accessory; 2. Replace the seal annually |
12 | 4702 2015-000，9 | Housing: Aluminum alloy; Seal: FKM; Connector: Copper alloy; Spring: 55CrSi alloy steel | 1. Solenoid coil burnout due to overload current; 2. Seal leakage caused by hydraulic oil contamination | 1. Install a current fuse matching the rated current of the solenoid coil; 2. Replace the hydraulic oil filter every 300 operating hours |
13 | 1CE300F35S3 | Housing: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: FKM | 1. Valve core wear caused by frequent commutation; 2. Seal leakage caused by high-temperature hydraulic oil | 1. Apply molybdenum disulfide lubricating grease to the valve core every 200 operating hours; 2. Install an oil cooler to control oil temperature ≤80°C |
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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