Parker Gear Pump Series Catalog
Parker gear pumps are world-renowned for high efficiency, low noise, compact structure and reliable heavy-duty performance.
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1. External Gear Pumps (Main Series)
1.1 GP Series (Light-Duty Compact Type)
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Series
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Type
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Displacement Range
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Max Pressure
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Max Speed
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Key Features
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GP Standard
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Compact Light-duty
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1.0-45.0 cm³/rev
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210 bar (continuous) 240 bar (intermittent)
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4,000 rpm
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Die-cast aluminum housing, lightweight, cost-effective, stable operation, suitable for general light industrial equipment
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GP*AN
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Low-noise Enhanced
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1.2-42.0 cm³/rev
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210 bar (continuous) 240 bar (intermittent)
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4,200 rpm
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Optimized helical gear design, lower pulsation and noise, excellent volumetric efficiency
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1.2 PX Series (High-Pressure Low-Noise Type)
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Series
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Type
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Displacement Range
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Max Pressure
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Max Speed
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Key Features
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P3X/P5X
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Small & Medium Frame
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0.8-25.0 cm³/rev
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276 bar (continuous) 310 bar (intermittent)
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4,500 rpm
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Bushing unit structure, high pressure resistance, ultra-low noise, precise gap compensation
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P11X/P17X
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Large Frame
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25.0-52.0 cm³/rev
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276 bar (continuous) 310 bar (intermittent)
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3,800 rpm
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Reinforced bearing design, strong overload capacity, suitable for precision hydraulic systems
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1.3 PGP Series (Heavy-Duty High-Pressure Type)
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Series
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Type
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Displacement Range
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Max Pressure
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Max Speed
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Key Features
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PGP300/315
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Medium Pressure Standard
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7.6-40.6 cm³/rev
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241 bar (continuous) 275 bar (intermittent)
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3,000 rpm
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Cast iron housing, wear-resistant thrust plate, stable performance for long-cycle operation
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PGP500/502
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High-Pressure Enhanced
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0.8-60.0 cm³/rev
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260 bar (continuous) 290 bar (intermittent)
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3,200 rpm
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Multi-pump combination support, high volumetric efficiency, suitable for mobile machinery
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PGP600
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Ultra-High Pressure Heavy-Duty
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40.0-87.6 cm³/rev
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275 bar (continuous) 310 bar (intermittent)
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2,800 rpm
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Ductile iron housing, super load resistance, exclusive for heavy industry and port machinery
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2. Internal Gear Pumps (IGP Series)
2.1 IGP Standard Series
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Series
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Frame Size
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Displacement Range
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Max Pressure
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Max Speed
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Key Features
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IGP1/IGP2
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Small & Medium
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2.5-50.0 cm³/rev
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250 bar (continuous) 280 bar (intermittent)
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4,000 rpm
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Low flow pulsation, mute operation, high efficiency for precision machine tool hydraulic systems
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IGP3/IGP4
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Medium & Large
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50.0-200.0 cm³/rev
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280 bar (continuous) 300 bar (intermittent)
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3,200 rpm
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Large flow output, pressure self-compensation, stable operation under full load for a long time
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3. Key Technical Parameters Overview
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Parameter
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External Gear Pumps
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Internal Gear Pumps
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Displacement Range
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0.8-87.6 cm³/rev
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2.5-200.0 cm³/rev
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Max Continuous Pressure
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Up to 276 bar
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Up to 280 bar
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Max Intermittent Pressure
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Up to 310 bar
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Up to 300 bar
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Max Speed
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Up to 4,500 rpm
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Up to 4,000 rpm
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Noise Level
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Standard (62-72 dB) Low-noise version (58-65 dB)
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52-60 dB (ultra-low noise)
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Housing Material
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Aluminum alloy (light series) Cast iron/ductile iron (heavy-duty series)
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High-strength cast iron (all series)
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Fluid Compatibility
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Mineral oil, synthetic hydraulic fluid, biodegradable fluid
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Mineral oil, synthetic hydraulic fluid, low-viscosity lubricating fluid
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Temperature Range
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-20°C to +85°C (standard) -40°C to +110°C (special seals)
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-20°C to +90°C (standard) -35°C to +115°C (high-temperature resistant seals)
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4. Model Code Explanation (Example: PGP502A0008AV1P1NB)
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Code Segment
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Meaning
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PGP502
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Series: PGP502 high-pressure external gear pump
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A
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Structure type: Standard single pump structure
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0008
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Displacement: 0.8 cm³/rev
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AV1
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Shaft & flange type: Standard SAE shaft and flange
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P1
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Port type: SAE standard O-ring port
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NB
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Seal & configuration: NBR seal, no auxiliary valve
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5. Application Areas
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Mobile Construction Machinery: Excavators, loaders, cranes, road construction equipment
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Agricultural Machinery: Tractors, harvesters, agricultural hydraulic operating systems
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General Industrial Machinery: Machine tools, injection molding machines, pressing equipment, conveyor systems
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Material Handling Equipment: Forklifts, stackers, port handling machinery
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Special Industrial Scenarios: Marine hydraulic systems, metallurgical equipment, mining machinery
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Precision Hydraulic Systems: Automation equipment, precision testing machines, low-noise production lines
Parker Gear Pump Series Catalog
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Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
