Parker PGP350 Series gear pump
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E-mail: hyd-sales2009@outlook.com
1. Product Overview
2. Core Features
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Tri-Piece Cast Iron Construction: Offers exceptional structural strength and distribution flexibility, ensuring long service life even in harsh environments. The cast iron housing provides excellent resistance to wear, impact, and corrosion.
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Balanced Thrust Plates: Minimize internal friction and fluid leakage, enhancing volumetric efficiency (up to 98%) and reducing energy loss during operation.
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Integrated Journal Bearing Lubrication: Internal fluid channels continuously lubricate bushings, extending bearing life and improving overall reliability under high-pressure conditions.
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Flexible Configurations: Available in single, multiple (up to 6 sections), piggyback, and through-shaft drive configurations. Supports various mounting, shaft, and port options to meet diverse system requirements.
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Wide Fluid Compatibility: Suitable for mineral oil and fire-resistant fluids, including water-oil emulsions (HFB), water-glycol (HFC), and phosphate esters (HFD), expanding application scope in fire-sensitive environments.
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Integrated Valve Capabilities: Optional integrated valves such as load-sensing flow controls, anti-cavitation checks, solenoid unloading relief valves, and priority flow controls, reducing system complexity and potential leak points.
3. Technical Specifications
3.1 Basic Parameters
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Displacement Range: 1.28 – 6.38 in³/rev (21 – 105 cm³/rev)
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Maximum Operating Pressure: 3500 psi (241 bar) continuous
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Speed Range: 400 – 3000 rpm (optimal operating range)
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Flow Rate: Up to 66 Gpm (250 Lpm) per section
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Operating Temperature Range: 0 – 180 °F (0 – 82 °C) with standard NBR seals; 0 – 150 °F (0 – 66 °C) with FPM (FKM) seals
3.2 Fluid & Filtration Requirements
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Fluid Type: Mineral oil, HFB (60/40 water-oil emulsion), HFC (water-glycol), HFD (phosphate esters)
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Filtration Efficiency: ISO 4406 Class 19/16 at 2000 psi (140 bar); 17/14 at 3000 psi (210 bar); 15/12 at 4000 psi (275 bar)
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Maximum Inlet Pressure: 15 psig
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Maximum Continuous Vacuum: 130 mm Hg (5 inch Hg) at operating temperature
3.3 Mechanical Specifications
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Body Material: Cast iron with cast iron bushings
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Shaft Type: SAE splined (13T, 14T, 15T) or keyed; options include SAE B ⅞”, SAE BB 1”, SAE C 1¼”
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Mounting Type: SAE B (2-bolt, 4-bolt), SAE C (2-bolt, 4-bolt) including “ZF” style
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Port Connections: BSPP, metric split flange, SAE straight thread, split flange (side or rear port positions)
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Radial Load Capacity: 1125 lb with outboard bearings
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Weight: 51 lb (23.1 kg) with 1” gear; add 1 lb (0.45 kg) for each additional ¼” gear width
4. Typical Applications
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Construction machinery (excavators, loaders, backhoes)
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Forestry equipment (harvesters, skidders)
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Oil & gas field equipment
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Material handling (forklifts, aerial lifts)
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Agricultural machinery
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Mobile trailers (live floor trailers, roll-off trailers, salt/sand spreaders)
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Lawn care equipment
5. Key Advantages
PGP gear pump parameter
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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.
