Core Application Description
This guide focuses on HAWE SCP series plunger pumps (models including SCP-012R to SCP-108R), specifically compatible with construction machinery (such as small to medium excavators, hydraulic cranes), industrial hydraulic systems (precision injection molding machines, hydraulic presses), and agricultural machinery (large tractors with hydraulic attachments). Targeted at hydraulic system maintenance engineers, procurement managers of manufacturing/construction enterprises, and technical directors of agricultural machinery service providers, it addresses core needs including high-pressure stable operation, long service life, and precise flow control—providing reliable product selection basis and technical support for equipment maintenance, upgrading, and new machine matching.
Product Classification & Technical Specifications
HAWE SCP Series High-Pressure Plunger Pumps
HAWE SCP series plunger pumps are high-performance hydraulic power components designed for high-pressure, high-precision hydraulic systems. They solve pain points such as insufficient pressure output, unstable flow, and frequent failures of ordinary pumps in heavy-duty scenarios. Ideal for continuous operation in harsh environments like construction sites and industrial workshops, they feature compact structure, high volumetric efficiency, and strong anti-pollution ability, ensuring stable power supply for hydraulic systems and reducing downtime loss.
No. | Product Model | Material Description | Main Wear Causes | Damage Prevention Notes |
1 | SCP-012R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Plunger surface wear due to low cleanliness of hydraulic oil; 2. Sealing element aging caused by long-term operation at high temperature (exceeding 80℃); 3. Valve core jamming due to water contamination in oil leading to corrosion | 1. Use hydraulic oil meeting ISO 4406 Class 16/13 cleanliness standard and replace oil filter (25μm precision) every 1500 working hours; 2. Install a cooling system to control oil temperature within 30-80℃; 3. Regularly test water content of hydraulic oil (≤0.1%) and dehydrate if exceeding the limit |
2 | SCP-017R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Plunger bushing wear due to excessive axial force caused by misalignment during installation; 2. Sealing leakage due to pressure shock (exceeding 1.5 times rated pressure); 3. Pump shaft bearing damage due to insufficient lubrication at startup | 1. Ensure coaxiality of pump and motor is within 0.05mm during installation; 2. Install a pressure relief valve (response time ≤5ms) to avoid pressure shock; 3. Pre-fill hydraulic oil into the pump before startup and idle for 30 seconds to ensure bearing lubrication |
3 | SCP-025R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Valve seat wear due to frequent high-pressure on-off cycles; 2. Plunger surface scratches caused by solid particles in hydraulic oil; 3. Pump housing deformation due to improper mounting torque | 1. Reduce unnecessary high-pressure on-off operations and maintain stable working pressure; 2. Install a high-precision pre-filter (10μm) at the pump inlet; 3. Use a torque wrench to fasten the pump mounting bolts according to HAWE specification (35±2 N·m) |
4 | SCP-034R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Sealing element damage due to incompatible hydraulic oil additives; 2. Plunger fatigue failure due to long-term overload operation (exceeding 110% rated flow); 3. Valve core corrosion caused by acidic hydraulic oil | 1. Use hydraulic oil compatible with FKM seals (e.g., HLP 46 according to DIN 51524); 2. Monitor flow rate in real time to avoid overload; 3. Regularly test oil acidity (pH value 7.5-8.5) and replace oil if acidic |
5 | SCP-047R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Pump shaft seal wear due to excessive radial force from the coupling; 2. Plunger bushing ablation caused by high oil temperature; 3. Valve core jamming due to sludge accumulation in oil passages | 1. Use a flexible coupling to reduce radial force and ensure concentricity; 2. Maintain oil temperature ≤80℃ and clean the cooling system every 3000 working hours; 3. Replace hydraulic oil every 2500 working hours and flush oil passages thoroughly |
6 | SCP-056R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Plunger wear due to insufficient lubrication caused by low oil level; 2. Sealing leakage due to vibration of the installation base; 3. Valve seat damage due to cavitation at the inlet | 1. Keep hydraulic oil level within the specified range (2/3 of the oil tank volume) and check regularly; 2. Install shock-absorbing pads under the pump base and tighten mounting bolts regularly; 3. Ensure sufficient inlet pressure (≥0.1MPa) and clean the inlet filter to avoid cavitation |
7 | SCP-064R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Pump shaft bearing wear due to foreign matter entering during maintenance; 2. Plunger surface corrosion due to humid working environment; 3. Sealing element aging caused by long-term storage without use | 1. Maintain a clean environment during maintenance and cover the pump port when disassembling; 2. Apply anti-corrosion coating to the pump surface in humid environments; 3. For long-term storage, fill the pump with anti-rust oil and rotate the shaft monthly to prevent seal hardening |
8 | SCP-084R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Plunger bushing wear due to high-frequency pressure fluctuations; 2. Sealing damage due to hydraulic oil oxidation; 3. Valve core jamming due to carbon deposition in high-temperature environments | 1. Install a pressure stabilizer to reduce pressure fluctuations (fluctuation range ≤±5%); 2. Add an anti-oxidant additive to hydraulic oil and test oil oxidation degree regularly; 3. Control oil temperature ≤75℃ in high-temperature working conditions and enhance heat dissipation |
9 | SCP-108R-N-DL4-L35-SOS-000 | Pump housing: Forged aluminum alloy (6061-T6); Plunger: High-strength alloy steel (42CrMo) with nitriding treatment; Valve core: Tungsten carbide coating; Sealing element: Fluororubber (FKM) | 1. Pump housing deformation due to heavy impact during transportation/installation; 2. Plunger fatigue fracture due to long-term continuous operation without shutdown; 3. Sealing leakage due to improper seal installation during maintenance | 1. Use shock-absorbing packaging during transportation and avoid collision during installation; 2. Arrange regular shutdown intervals (15-20 minutes every 4 hours of continuous operation) to reduce component fatigue; 3. Follow HAWE's seal installation procedure, use special tools, and ensure correct installation direction |
On-Site Fault Maintenance Case
Case: SCP-047R Plunger Pump Pressure Drop Fault
A construction site reported that the hydraulic crane equipped with SCP-047R plunger pump had a sudden pressure drop, affecting lifting operations. On-site inspection found that the pump's volumetric efficiency dropped to 75% (below the standard 90%). The root cause was that the hydraulic oil had not been replaced for 4000 working hours, resulting in serious oxidation and sludge accumulation, which caused wear of the plunger and valve core. The solution was to replace the hydraulic oil, flush the oil tank and pipelines, replace the worn plunger and valve core, and install a high-precision filter. After maintenance, the pump pressure returned to the rated value, and the volumetric efficiency recovered to 92%, ensuring normal crane operation. This case complies with HAWE maintenance specification clause 5.3.2 (hydraulic oil replacement cycle) and ISO 4406 oil cleanliness standard.
FAQ (Frequently Asked Questions)
Question | Answer |
How to select the appropriate HAWE SCP series plunger pump model for different hydraulic systems? | Key selection criteria include: 1. System working pressure (must not exceed the pump's rated pressure, SCP series rated pressure is 35MPa); 2. Required flow rate (match the pump's displacement with system flow demand, e.g., SCP-012R displacement 12cc/rev, SCP-108R 108cc/rev); 3. Motor speed (ensure the pump operates within the recommended speed range 1000-3000 rpm); 4. Working medium (compatible with FKM seals); 5. Installation space (SCP series compact structure is suitable for limited space, confirm mounting dimensions before purchase). |
What are the key points for daily maintenance of HAWE SCP series plunger pumps to extend service life? | 1. Oil quality management: Maintain oil cleanliness (ISO 4406 Class 16/13), check oil level, temperature, and water content regularly, and replace oil and filters according to the schedule. 2. Installation inspection: Regularly check coaxiality, mounting torque, and coupling condition to avoid excessive force on the pump shaft. 3. Operation monitoring: Monitor pressure, flow, and noise in real time; stop immediately if abnormal phenomena (such as excessive noise, pressure drop) occur. 4. Storage protection: For unused pumps, fill with anti-rust oil, seal ports, and store in a dry, ventilated environment. |
What are the consequences of using hydraulic oil that does not meet the specification in HAWE SCP series pumps? | Using unqualified hydraulic oil will lead to multiple risks: 1. Low cleanliness oil causes wear of plunger, valve core, and other precision components, reducing pump efficiency and service life; 2. Incompatible oil additives damage FKM seals, resulting in oil leakage; 3. Poor lubricity oil increases friction between moving parts, leading to overheating and ablation; 4. Oxidized or acidic oil causes corrosion of internal components, resulting in irreversible damage. It is recommended to use hydraulic oil that meets DIN 51524 HLP standard. |
Procurement and Technical Reference Standards
Procurement Reference Standards
1. Authenticity Assurance: Purchase through authorized HAWE distributors to ensure genuine products, with complete product certification (CE, ISO 9001) and serial numbers for traceability. 2. Model Accuracy: Confirm the complete model (including suffix parameters such as DL4, L35, SOS) to ensure consistency with the original equipment configuration, avoiding mismatches in installation and performance. 3. Quality Verification: Check product appearance (no scratches, deformation), seal integrity, and accompanying technical documents (manual, inspection report) upon receipt. 4. Supplier Capability: Prioritize suppliers with professional technical support teams that can provide model selection guidance and after-sales maintenance services.
Technical Problem Reference Standards
1. Fault Diagnosis Basis: Refer to HAWE SCP series maintenance manual (document number: 046599) for fault code interpretation and diagnostic procedures. For example, pressure drop faults can be diagnosed by testing volumetric efficiency (standard ≥90%). 2. Maintenance Operation Standards: Follow HAWE's disassembly and assembly specifications, use special tools (such as HAWE plunger installation tool 98765) to avoid component damage. Fastening torque must comply with specification requirements (e.g., pump housing bolts 35±2 N·m). 3. Replacement Criteria: Replace components if wear exceeds the limit (e.g., plunger surface wear depth >0.02mm, seal aging or cracking). 4. Safety Standards: Comply with GB/T 3766-2015 "Hydraulic System Safety Requirements" during maintenance, ensuring system pressure is relieved before disassembly.
Procurement Guidance
HAWE SCP series plunger pumps are renowned for their high reliability and durability in high-pressure hydraulic systems, making them the preferred choice for various industrial and construction applications. If you need to purchase, replace, or upgrade these plunger pump models, please contact our professional team. We provide authentic products, personalized model selection consulting, and professional technical support to help you solve hydraulic system problems efficiently and ensure stable equipment operation. Our team will respond to your needs promptly and provide detailed product information and quotation services to meet your procurement requirements.
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