Core Application & Target User Overview
This guide covers a full range of high-performance hydraulic components, specifically compatible with construction machinery (excavators, loaders), industrial presses, plastic injection molding machines, and metallurgical equipment. Targeting hydraulic system maintenance engineers, equipment repair workshops, manufacturing enterprises, and mining operation teams, it addresses core demands such as reliable component replacement, system fault resolution, and long-term stable operation. All components comply with ISO 4401 (hydraulic valve standards), ISO 13709 (axial piston pump standards), and DIN 24342 (mounting standards), ensuring interchangeability and performance consistency with original equipment, effectively reducing unplanned downtime and maintenance costs.
Axial Piston Pumps
Axial Piston Pumps are the high-pressure power core of hydraulic systems, converting mechanical energy into hydraulic energy to drive heavy-duty actuators. Premature wear of piston pairs or swash plate ablation can lead to insufficient system pressure, reduced equipment operation efficiency, and costly production interruptions. Our axial piston pumps adopt precision carburizing and nitriding processes, ensuring high wear resistance and stable output, suitable for high-load, continuous operation scenarios such as large excavators and industrial presses.
Field Application Case
A metallurgical plant's 500-ton hydraulic press experienced unstable pressure output and frequent shutdowns. Inspection confirmed that the A4VS0250DR/30RPPB13N00 axial piston pump had severe cylinder block wear (wear depth exceeding 0.15mm) due to long-term operation with contaminated hydraulic oil. After replacing with our ISO 13709-compliant pump and optimizing the oil filtration system, the press restored stable operation, with pressure fluctuation controlled within ±1%, and continuous trouble-free operation for 2500 hours, reducing maintenance frequency by 60%.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | A10VS0100DRS/32RVPB12N00-S1439 | Piston: 20CrMnTi alloy steel (carburizing and quenching, surface hardness HRC 58-62); Swash plate: 42CrMo alloy steel (nitriding treatment, nitride layer thickness 0.2-0.3mm); Pump body: 35CrMo alloy steel (quenched and tempered); Shaft: 40CrNiMo alloy steel; Seal: Fluororubber (FKM); Bearings: GCr15 high-carbon chromium steel | 1. Piston pair wear caused by hydraulic oil contamination (particle size ≥0.02mm) scratching the mating surface; 2. Swash plate fatigue cracking caused by long-term operation at 90%+ rated pressure | 1. Maintain hydraulic oil cleanliness at ISO 4406 Class 14/11, replace high-precision oil filters every 400 operating hours; 2. Install a pressure monitoring system, avoid continuous operation above 85% of the pump's rated pressure |
2 | A4VS0250DR/30RPPB13N00 | Piston: 20CrMnTi alloy steel (carburizing and quenching); Cylinder block: 35CrMo alloy steel (nitriding treatment); Shaft: 42CrMo alloy steel; Seal: Fluororubber (FKM); Valve plate: Copper-based alloy with graphite self-lubricating coating; Bearings: GCr15 high-carbon chromium steel | 1. Cylinder block wear caused by misalignment with the drive motor (radial runout >0.05mm); 2. Shaft seal leakage caused by high-temperature operation (oil temperature >85°C) accelerating seal aging | 1. Conduct laser alignment of the pump and motor shaft quarterly per ISO 13709 Clause 5.2, ensure axial deviation ≤0.1mm; 2. Install an oil cooler to control system oil temperature ≤80°C, inspect seal integrity monthly |
Directional Control Valves
Directional Control Valves are core control components that regulate hydraulic oil flow direction to realize commutation, start, and stop of actuators. Poor commutation response or internal leakage can lead to slow equipment movement, uncoordinated actions, and reduced production precision. Our directional control valves adopt precision grinding of valve cores and multi-layer sealing structures, ensuring fast response (≤0.1s), low internal leakage (≤3ml/min), and stable performance in high-vibration industrial environments.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | 4WE6H6X/EG24N9K4 R900561286 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation (heat resistance class F) | 1. Valve core jamming caused by hydraulic oil contamination (sludge accumulation); 2. Solenoid coil burnout caused by voltage fluctuations (voltage deviation >±10%) | 1. Replace hydraulic oil filter every 300 operating hours, flush the system every 1200 operating hours; 2. Install a voltage stabilizer in the control circuit, monitor voltage weekly per DIN 40050-1 |
2 | 4WE6M6X/EG24N9K4/V | Valve body: 45# steel (quenched and tempered); Valve core: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Seal leakage caused by high-pressure hydraulic oil cycling; 2. Valve core jamming caused by rust in the hydraulic system | 1. Inspect seals quarterly, replace with new ones if signs of aging (cracking, hardening) appear; 2. Add an anti-rust additive to the hydraulic oil, drain and replace oil annually |
3 | 4WREE6E32-2X/G24K31/A1V-655 R900962181 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation (feedback control design) | 1. Internal leakage caused by valve seat wear; 2. Solenoid coil damage caused by feedback signal interference | 1. Replace the valve seat every 1200 operating hours; 2. Route feedback signal lines separately from power cables to avoid electromagnetic interference |
4 | 4WRAE10E60-2X/G24K31/A1V R900954083 | Valve body: 45# steel (quenched and tempered); Valve core: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Solenoid coil overheating caused by high ambient temperature (＞60°C); 2. Valve core wear caused by long-term use | 1. Install a heat shield if the valve is near high-temperature components, maintain ambient temperature ≤55°C; 2. Calibrate the valve every 800 operating hours, replace the valve core if wear exceeds 0.03mm |
5 | 4WE6D6X/EG24K4QMBG24 R900574632 | Valve body: 304 stainless steel; Valve core: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Solenoid coil failure caused by moisture intrusion; 2. Valve core jamming caused by foreign object intrusion during maintenance | 1. Seal the valve's electrical interface with silicone sealant, avoid moisture entering; 2. Clean the valve and surrounding area before maintenance, avoid debris entering the valve body |
6 | 4WE10D5X/EG24N9K4/M R901278760 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Valve body deformation caused by uneven installation force; 2. Solenoid coil burnout caused by overload current | 1. Use a torque wrench to tighten mounting bolts uniformly per DIN 24342 Clause 6.3, avoid over-tightening; 2. Install a current fuse in the control circuit, matching the rated current of the solenoid coil |
7 | 4WE10D5X/OFEG24N9K4/M R901278763 | Valve body: 45# steel (quenched and tempered); Valve core: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation (oil-proof design) | 1. Seal leakage caused by oil immersion (seal failure); 2. Valve core jamming caused by hydraulic oil sludge accumulation | 1. Inspect the solenoid coil's oil-proof seal quarterly, replace if damaged; 2. Flush the hydraulic system every 1000 operating hours, replace hydraulic oil if sludge is found |
8 | 4WRL25V370M-3X/G24Z4/M 0811404405 | Valve body: 35CrMo alloy steel; Valve core: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation (feedback control design) | 1. Spool wear caused by high-velocity oil flow; 2. Solenoid coil failure caused by voltage spikes | 1. Install the valve in a low-flow velocity area of the system; 2. Install a surge protector in the control circuit to absorb voltage spikes |
9 | 4WRE6E16-2X/G24K4/V R900954092 | Valve body: 304 stainless steel; Valve core: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Valve core wear caused by frequent commutation; 2. Seal aging caused by incompatible hydraulic oil additives | 1. Apply molybdenum disulfide lubricating grease to the valve core mechanism every 200 operating hours; 2. Use hydraulic oil compatible with FKM seals per ASTM D471 |
10 | M3SEW6C3X/420MG24N9K4 R900566273 | Valve body: 304 stainless steel; Valve core: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with heat-resistant encapsulation (420V compatible) | 1. Solenoid coil damage caused by dust and moisture intrusion; 2. Valve core jamming caused by improper installation (valve body tilt >3°) | 1. Install a protective cover on the solenoid coil, seal cable entries with silicone rubber; 2. Install the valve horizontally, ensure tilt angle ≤2° using a level meter |
Pressure Control Valves
Pressure Control Valves are critical safety components that stabilize system pressure, prevent overpressure damage to components, and adjust pressure for different working conditions. Malfunction can lead to system pressure instability, component fatigue failure, or even catastrophic explosions. Our pressure control valves adopt precision pressure-adjusting mechanisms and high-strength materials, ensuring accurate pressure control (error ≤±2%) and reliable overpressure protection, fully complying with ISO 4401 Clause 7.2 (pressure control accuracy requirements).
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | Z2DB10VC2-4X/315V R900411430 | Valve body: 35CrMo alloy steel; Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Spool jamming caused by hydraulic oil contamination; 2. Spring fatigue caused by long-term compression | 1. Replace hydraulic oil filter every 300 operating hours, ensure oil cleanliness meets ISO 4406 Class 13/10; 2. Inspect spring elasticity every 600 operating hours, replace if deformation is found |
2 | DBEM107X/100YG24K4M R901335402 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Internal leakage caused by spool wear; 2. Solenoid coil failure caused by moisture intrusion | 1. Calibrate the valve every 800 operating hours, replace spool if leakage exceeds 5ml/min; 2. Install the valve in a moisture-proof control cabinet, seal cable entries |
3 | R900410849 ZDR6DA2-4X/150Y | Valve body: 304 stainless steel; Spool: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Adjusting knob: Aluminum alloy | 1. Valve body corrosion caused by corrosive media in the hydraulic system; 2. Spool jamming caused by foreign object intrusion | 1. Use corrosion-resistant hydraulic oil, inspect valve body for corrosion monthly; 2. Install a filter at the valve inlet to prevent foreign objects from entering |
4 | ZDB10VB1-4X/50V R900967522 | Valve body: 45# steel (quenched and tempered); Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Spool jamming caused by rust in the hydraulic system; 2. Adjusting screw wear caused by frequent adjustment | 1. Add an anti-rust additive to the hydraulic oil, drain and replace oil annually; 2. Avoid frequent pressure adjustments, mark the optimal pressure setting position |
5 | ZDB10VB1-4X/200V R900595254 | Valve body: 35CrMo alloy steel; Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Adjusting screw: 40Cr alloy steel | 1. Seal aging caused by chemical degradation; 2. Spring breakage caused by over-adjustment of pressure | 1. Use hydraulic oil compatible with NBR seals per ASTM D471; 2. Do not adjust pressure beyond the rated range of the valve (marked on the nameplate) |
6 | ZDB10VA2-4X/100V R900424537 | Valve body: 45# steel (quenched and tempered); Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Spool wear caused by high-pressure oil flow erosion; 2. Adjusting screw loosening caused by long-term vibration | 1. Install the valve in a position with low flow turbulence, ensure correct flow direction; 2. Lock the adjusting screw with a lock nut after setting pressure, re-check torque monthly |
7 | Z2DB10VD2-4X/200V R900411358 | Valve body: 35CrMo alloy steel; Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Seal leakage caused by high-temperature oil (oil temperature >85°C); 2. Spool jamming caused by hydraulic oil sludge accumulation | 1. Install an oil cooler to control oil temperature ≤80°C; 2. Flush the hydraulic system every 1000 operating hours, replace hydraulic oil if sludge is found |
8 | Z2DB6VD2-4X/200V R900411314 | Valve body: 304 stainless steel; Spool: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Valve body corrosion caused by outdoor exposure; 2. Spool wear caused by high-velocity oil flow | 1. Install the valve in a waterproof control cabinet for outdoor applications; 2. Ensure the valve is installed in the correct flow direction to reduce flow velocity impact |
9 | ZDB6VA1-4X/100V R900507526 | Valve body: 35CrMo alloy steel; Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Adjusting screw: 40Cr alloy steel | 1. Seal leakage caused by pressure cycling; 2. Spring fatigue caused by long-term compression | 1. Inspect seals quarterly, replace with new ones if necessary; 2. Inspect spring elasticity every 600 operating hours, replace if deformation is found |
10 | DBEM107X/315YG24K4M R910335399 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with heat-resistant encapsulation | 1. Solenoid coil burnout caused by voltage fluctuations; 2. Internal leakage caused by valve seat wear | 1. Install a voltage stabilizer in the control circuit; 2. Replace the valve seat every 1200 operating hours |
11 | DBETE6X/315G24K31A1V R901029969 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Spool jamming caused by foreign object intrusion; 2. Solenoid coil damage caused by feedback signal interference | 1. Install a filter at the valve inlet to prevent foreign objects from entering; 2. Route feedback signal lines separately from power cables to avoid interference |
12 | ZDB10VA2-4X/315V R900409955 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Valve body deformation caused by uneven installation force; 2. Spool wear caused by long-term use | 1. Use a torque wrench to tighten mounting bolts uniformly; 2. Calibrate the valve every 800 operating hours, replace spool if wear exceeds 0.03mm |
Flow Control Valves & Check Valves
Flow Control Valves and Check Valves regulate hydraulic oil flow rate, ensuring stable and accurate movement of actuators, while check valves prevent oil backflow to protect system components. Malfunction can lead to inconsistent actuator speed, reduced operational precision, and energy waste. Our flow control valves adopt precision flow-regulating orifices and reliable structural design, ensuring accurate flow control (error ≤±3%) and long-term stable operation in medium to high-pressure systems.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | Z2S6-2-6X/ R900347496 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Seat: Bronze | 1. Spool wear caused by high-velocity oil flow; 2. Seal leakage caused by incompatible hydraulic oil additives | 1. Ensure the valve is installed in the correct flow direction to reduce flow velocity impact; 2. Use hydraulic oil compatible with NBR seals per ASTM D471 |
2 | Z2S10-2-3X R900421985 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Seat: Bronze | 1. Valve seat wear caused by frequent flow regulation; 2. Spool jamming caused by hydraulic oil contamination | 1. Avoid frequent and rapid flow adjustments; 2. Replace hydraulic oil filter every 300 operating hours, ensure oil cleanliness meets ISO 4406 Class 13/10 |
Hydraulic Auxiliary Elements
Hydraulic Auxiliary Elements (compensators, control modules, pressure sensors, etc.) are essential for ensuring stable system operation, optimizing pressure distribution, and monitoring working conditions. Malfunction can lead to system energy waste, uneven load distribution, or failure to detect pressure anomalies. Our auxiliary elements adopt reliable structural design and high-quality materials, adapting to various industrial hydraulic system requirements and ensuring seamless compatibility with main components.
Serial No. | Product Model (Including Part No.) | Material | Main Wear Reasons | Damage Prevention Notes |
1 | R900489669 ZDC16P-2X/XM | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Adjusting screw: 40Cr alloy steel | 1. Spool jamming caused by hydraulic oil contamination; 2. Adjusting screw wear caused by frequent adjustment | 1. Replace hydraulic oil filter every 300 operating hours; 2. Avoid frequent pressure adjustments, mark the optimal setting position |
2 | COMPENSATOR AB22-31/065-16SM R900023389 | Housing: Aluminum alloy; Diaphragm: EPDM rubber; Spring: 55CrSi alloy steel; Connector: Copper alloy; Adjusting knob: Aluminum alloy | 1. Diaphragm aging and cracking caused by long-term temperature changes; 2. Connector loosening caused by vibration | 1. Inspect the diaphragm quarterly, replace if signs of aging appear; 2. Tighten connectors monthly, apply anti-loosening thread lock compound |
3 | LC16A20E7X R900910269 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool wear caused by high-pressure oil flow erosion; 2. Housing deformation caused by uneven installation force | 1. Install the valve in a low-flow velocity area; 2. Use a torque wrench to tighten mounting bolts uniformly |
4 | LFA25D-7X/FX08 R900925453 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Connector: Stainless steel | 1. Spool jamming caused by hydraulic oil sludge accumulation; 2. Connector corrosion caused by outdoor exposure | 1. Flush the hydraulic system every 1000 operating hours; 2. Install the component in a waterproof enclosure for outdoor use |
5 | LFA16G-7X/ R900912637 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Housing: Aluminum alloy | 1. Seal leakage caused by chemical degradation; 2. Spool wear caused by long-term use | 1. Use hydraulic oil compatible with NBR seals per ASTM D471; 2. Calibrate the component every 800 operating hours, replace spool if necessary |
6 | LFA16H2-7X/FX08 R900912656 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool jamming caused by rust in the hydraulic system; 2. Housing corrosion caused by moisture in hydraulic oil | 1. Add an anti-rust additive to the hydraulic oil; 2. Check hydraulic oil for water content monthly, add a water separator if needed |
7 | LFA16WEA-7X/P08 R900959805 | Valve body: 304 stainless steel; Spool: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Solenoid coil failure caused by moisture intrusion; 2. Spool wear caused by high-velocity oil flow | 1. Seal the electrical interface with silicone sealant, avoid moisture entering; 2. Install the component in a low-flow velocity area |
8 | LC25A20E7X R900910270 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Seal leakage caused by high-pressure operation; 2. Spool jamming caused by foreign object intrusion | 1. Inspect seals quarterly, replace with new ones if necessary; 2. Clean the component and surrounding area before maintenance |
9 | LC16DR40E7X/ R900912560 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool wear caused by frequent adjustment; 2. Housing deformation caused by vibration | 1. Apply molybdenum disulfide lubricating grease to the spool mechanism every 200 operating hours; 2. Install vibration-damping mounting pads |
10 | LFA16DB2-7X/100 R900912753 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Housing: Aluminum alloy | 1. Seal aging caused by high-temperature operation; 2. Spool jamming caused by hydraulic oil contamination | 1. Install a heat shield if near high-temperature components; 2. Replace hydraulic oil filter every 300 operating hours |
11 | LFA16DB2-7X/050 R900912751 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Housing: Aluminum alloy | 1. Spring fatigue caused by long-term compression; 2. Seal leakage caused by pressure cycling | 1. Inspect spring elasticity every 600 operating hours, replace if deformation is found; 2. Inspect seals quarterly, replace with new ones if necessary |
12 | LC16DB20D7X R900912546 | Valve body: 45# steel (quenched and tempered); Spool: 20CrMnTi alloy steel (carburizing and quenching); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool jamming caused by sludge accumulation; 2. Housing corrosion caused by outdoor exposure | 1. Flush the hydraulic system every 1000 operating hours; 2. Install the component in a waterproof enclosure for outdoor use |
13 | LFA16DZ2-7X/210Y R901015083 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool wear caused by high-pressure oil flow erosion; 2. Adjusting screw loosening caused by vibration | 1. Install the component in a low-flow velocity area; 2. Lock the adjusting screw with a lock nut, check torque quarterly |
14 | R901017048 | Housing: 304 stainless steel; Spool: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Connector: Stainless steel | 1. Connector corrosion caused by corrosive media; 2. Spool jamming caused by foreign object intrusion | 1. Use corrosion-resistant hydraulic oil, inspect connector for corrosion monthly; 2. Install a filter at the inlet to prevent foreign objects from entering |
15 | HED8OH-2X/50K14AS R901107086 | Housing: Aluminum alloy; Diaphragm: PTFE; Spring: 55CrSi alloy steel; Connector: Copper alloy; Sensor element: Piezoresistive ceramic | 1. Diaphragm damage caused by pressure impact; 2. Sensor element failure caused by moisture intrusion | 1. Install a pressure buffer upstream to absorb pressure shocks; 2. Seal the electrical interface with silicone sealant, avoid moisture entering |
16 | LFA25DBU2A2-7X/100A050 R900948114 | Valve body: 35CrMo alloy steel; Spool: 42CrMo alloy steel (nitriding treatment); Spring: 60Si2Mn alloy steel; Seal: Fluororubber (FKM); Housing: Aluminum alloy | 1. Spool jamming caused by hydraulic oil contamination; 2. Seal leakage caused by high-temperature operation | 1. Replace hydraulic oil filter every 300 operating hours; 2. Install an oil cooler to control oil temperature ≤80°C |
17 | LT07MKA-2X/100/02M R900905251 | Housing: Aluminum alloy; Float: Stainless steel; Spring: 55CrSi alloy steel; Seal: Nitrile rubber (NBR); Connector: Copper alloy | 1. Float wear caused by contact with contaminated hydraulic oil; 2. Seal leakage caused by aging | 1. Maintain hydraulic oil cleanliness at ISO 4406 Class 14/11; 2. Replace seals annually |
18 | R900301889 M-SR6KD05-1X/ | Housing: 304 stainless steel; Spool: 1.4021 alloy steel (hard chrome plating); Spring: 55CrSi alloy steel; Seal: Fluororubber (FKM); Adjusting knob: Plastic-reinforced nylon | 1. Spool jamming caused by foreign object intrusion; 2. Adjusting knob loosening caused by accidental collision | 1. Clean the component and surrounding area before maintenance; 2. Install a protective cover around the adjusting knob |
19 | 0811405063 VT-VRRA1-527-20/V0/2STV | Housing: Aluminum alloy; Circuit board: FR-4 epoxy resin; Connector: Gold-plated copper alloy; Solenoid coil: Copper wire with epoxy resin encapsulation | 1. Circuit board damage caused by moisture and dust intrusion; 2. Solenoid coil failure caused by voltage fluctuations | 1. Install the component in a sealed control cabinet, clean dust monthly; 2. Install a voltage stabilizer in the control circuit |
Procurement & Technical Support Guidelines
Selecting high-quality, compatible hydraulic components is crucial to ensuring the safe, efficient, and stable operation of industrial hydraulic systems. Our products fully comply 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 system parameters and application scenarios, on-site installation guidance, and post-sales maintenance consultation. Whether you need single-component replacements, bulk inventory preparation, or customized solutions for special working conditions (high-temperature, high-corrosion, high-vibration), our team is committed to delivering reliable products and tailored services. Contact us today to discuss your hydraulic component requirements and obtain optimized procurement and application solutions.
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