PGH-3X Internal meshing gear pump
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Bosch Rexroth PGH-3X Series Internal Gear Pump
Product Overview
Core Features
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Fixed Displacement Design: Delivers consistent flow output for precise hydraulic system control, suitable for applications requiring stable pressure supply.
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Gap Compensation Technology: Achieves high efficiency even at low speeds and low viscosity levels, reducing energy consumption and operational costs.
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High Pressure Resistance: Boasts a maximum operating pressure of 350 bar, ideal for high-pressure, fatigue-resistant drives with large load cycles.
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Low Operational Noise & Flow Pulsation: Minimizes noise pollution and system vibration, ensuring smooth equipment operation.
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Broad Compatibility: Suitable for a wide range of viscosity and speed ranges. Compatible with HFC fluids when equipped with “W” seal design.
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Flexible Combination: All frame sizes and nominal sizes can be combined with each other, and can also be integrated with axial piston pumps, vane pumps, and other internal gear pumps to form multi-pump systems.
Technical Specifications
Frame Sizes & Nominal Sizes
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Frame Size 4: Nominal sizes 20, 25, 32, 40, 50, 63 (displacement range: 20.1 – 65.5 cm³/rev)
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Frame Size 5: Nominal sizes 63, 80, 100, 125, 160, 200, 250 (displacement range: 64.7 – 250.5 cm³/rev)
Key Performance Parameters
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Parameter
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Unit
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Specification
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|---|---|---|
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Minimum Speed (n)
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rpm
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200 (for all sizes)
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Maximum Speed (n)
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rpm
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3000 (for all sizes)
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Maximum Operating Pressure
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bar
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350 (intermittent, varies by nominal size)
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Nominal Pressure (p)
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bar
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135 – 315 (varies by frame and nominal size)
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Maximum Flow Rate (q)
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l/min
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359.6 (for frame 5, nominal size 250 at max speed)
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Applications
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Plastics processing machines
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Automated presses
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Foundry machines
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Accumulator charging systems
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Other high-pressure hydraulic systems requiring fatigue resistance and stable performance
Structural Composition
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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.
