Rexroth’s PGF-2X and PGF-3X series internal meshing gear pumps are both high-precision hydraulic components. The core difference lies in the displacement specifications and applicable scenarios. The specific analysis is as follows：
1. Comparison of displacement and performance parameters
PGF-2X series
Displacement range: 6.5cm3/rev (such as PGF2-2X/006RE01VE4) to 22cm3/rev (such as PGF2-2X/022RE20VE4).
Pressure level：
Continuous working pressure: 210bar
Peak pressure: 250bar (some models can reach 280bar, such as PGF2-2X/006RJ20VU2K).
Speed range: 600-3600rpm, high efficiency can still be maintained in low viscosity media.
Applicable scenarios：
Medium and small flow, medium pressure hydraulic systems (such as machine tools, lifting devices).
Noise-sensitive industrial equipment (such as fans, spreaders).
PGF-3X series
Displacement range: 20cm3/rev (such as PGF3-3X/020RE07VE4) to 40cm3/rev (such as PGF3-3X/040RE07VE4).
Pressure level：
Continuous working pressure: 210bar
Peak pressure: 250bar (some models are designed with higher pressure).
Speed range: 500-3000rpm, optimize the performance of low-speed working conditions.
Applicable scenarios：
Large-flow, high-pressure hydraulic systems (such as construction machinery and injection molding machines).
Heavy-duty industrial environments (such as metallurgy, ship hydraulic systems).

2. Technical characteristics and advantages
Common advantage
Low-noise design: optimize the gear meshing and floating ring compensation structure, and reduce vibration by more than 30%.
High efficiency: The gap compensation technology enables the volumetric efficiency to reach more than 95%, reducing energy loss.
Long life: Plain bearings and FKM seals (fluorine rubber) adapt to a wide temperature range (-20℃ to +100℃), and have a life span of more than 2 million load cycles.
Modular installation: support ISO 4-hole flange, multiple shaft configurations (such as parallel key shaft, cylindrical belt drive), easy system integration.
PGF-3X series enhanced features
Enhanced bearing design: to withstand higher radial forces and adapt to heavy-duty working conditions.
Optimized displacement gradient: provide 20/25/32/ 40cm3/rev multi-specification, reducing system redundancy design.
Optional high-voltage version: Some models (such as PGF3-3X/032RE07VE4) support customized high-voltage parameters to meet special needs.

3. Typical application cases
PGF2-2X/016RE20VE4
Application: Hydraulic clamping system of CNC machine tools.
Advantages: low noise (≤72dB), high response speed, to meet the needs of precision machining.
PGF3-3X/032RE07VE4
Application: Hydraulic drive unit of injection molding machine.
Advantage: Large flow (44.8L/min@1400rpm ), High pressure (250bar) to ensure stable mold opening and closing action.

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.

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