Parker PGP511 Series gear pump
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1. General Information
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Pump Type: Fixed displacement gear pump
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Design Feature: Advanced international “floating bushing” design; pressure-balanced bearing housing for maximum efficiency
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Body Material: Aluminum alloy
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Brand Availability: Also marketed under Tyrone, Commercial, and Ultra brands
2. Performance Parameters
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Parameter
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Value Range
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Maximum Operating Pressure
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Up to 250 bar (3,625 psi); continuous working pressure up to 275 bar (4,000 psi) for some models
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Displacement
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4 cm³/rev – 33 cm³/rev (0.24 in³/rev – 2.01 in³/rev); PGP511H sub-series: 10.1 cm³/rev – 28.3 cm³/rev (0.62 in³/rev – 1.73 in³/rev)
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Speed Range
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Minimum: 500 rpm; Maximum: 2,500 rpm – 4,000 rpm (PGP511H: up to 3,000 rpm)
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Noise Level
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PGP511H sub-series: Maximum 63 dB @ 2,950 rpm (low-noise spiral gear design)
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3. Physical Parameters
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Dimensions: 130.7 mm × 89.5 mm × 114 mm (length × width × height) for standard models
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Weight: Maximum 4.6 kg (10.1 lb)
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Shaft Type: SAE, ISO, DIN, or industry-specific; tapered shaft (1:8) available; SAE “A” spline (9-tooth, 16/32 DP, 31.8L) optional
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Mounting Options: SAE, ISO, DIN flanges
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Port Connections: SAE, ISO, NPT, BSPP, ODT; port types: flange, straight thread; port positions: side, rear
4. Fluid Requirements
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Fluid Type: Mineral oil (standard), phosphate ester, water-glycol
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Temperature Range: -15 °C to 80 °C (5 °F to 176 °F); PGP511H sub-series: -40 °C to 70 °C (-40 °F to 158 °F)
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Viscosity Range: 10 mm²/s – 300 mm²/s (50 SUS – 7,500 SUS); PGP511H sub-series: 15 mm²/s – 150 mm²/s
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Sealing Material: NBR (Nitrile Rubber) as standard
5. Configuration & Options
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Rotation Direction: Clockwise (CW), Counterclockwise (CCW), or bidirectional
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Configurations: Single, tandem, or multiple pump assemblies
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Integrated Valves (Optional): Anti-cavitation valve, relief valve, solenoid unload valve, proportional relief valve, cross-port relief valve, etc.
6. Typical Applications
7. Model Coding Example (Reference)
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PG: Gear design; P: Pump category; 511: Series
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A: Single pump (standard motor, no check valve)
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0160: Displacement (16 cm³/rev)
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C: Rotation direction (Clockwise)
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A1: Shaft extension (SAE “A” spline)
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H2: Flange (SAE “A” 2-bolt, 106.4 – Ø82.55 mm)
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N: Seal material (NBR)
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E5/E3: Port threads (3/4 – 14 BSP / 1/2 – 12 BSP)
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B1/B1: No motor inlet/drain ports
Parker PGP511 gear pump
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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.
