Rexroth PGM-4X Series Internal Gear Pumps
Rexroth Gear Pump:AZPB/ AZPF/ AZPN/ AZPG/ AZPS/ AZPT/ AZPU/ AZPJ/ 1PF2G/ PGF/ PGH/ PGM…
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I. Basic Specification Parameters
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Parameter Item
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Detailed Description
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Type
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Fixed displacement internal gear pump with sealing gap compensation
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Frame Size
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4, 5 (two sub-series: PGM4 and PGM5)
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Displacement Range
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25–125 cm³/rev (25, 32, 40, 50, 63, 80, 100, 125)
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Maximum Operating Pressure
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210 bar (3050 psi)
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Maximum Displacement
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125.3 cm³
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Operating Characteristics
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Low noise, low flow pulsation, high efficiency even at low viscosity
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Application Areas
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Industrial hydraulic systems, variable speed drives (e.g., plastics processing machinery)
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Material Features
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Aluminum housing, cast iron flanges and cover plates, steel shafts and internal gears
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II. Model Coding Rules
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Code Segment
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Meaning
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PGM
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Product series code (Internal gear pump)
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4
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Frame size (4 or 5)
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4X
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Component series (4X series)
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040
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Displacement (cm³/rev)
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R
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Rotation direction (R=Clockwise, L=Counterclockwise)
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A/T
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Mounting flange type (A=ISO standard, T=Special type)
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11
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Shaft extension type
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V
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Seal material (V=FKM fluoroelastomer)
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U2
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Version identification
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III. Main Sub-series and Common Models
1. PGM4-4X Sub-series (Frame size 4, small displacement)
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PGM4-4X/025RA11VU2 (R901363096)
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PGM4-4X/032RA11VU2 (R901363097)
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PGM4-4X/040RA11VU2 (R901363098)
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PGM4-4X/050RA11VU2 (R901363099)
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PGM4-4X/063RA11VU2 (R901363100)
2. PGM5-4X Sub-series (Frame size 5, large displacement)
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PGM5-4X/080RA11VU2
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PGM5-4X/100RA11VU2
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PGM5-4X/125RA11VU2
3. Other Versions
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PGM4-3X series (different component series): e.g., PGM4-3X/032RA11VU2, PGM4-3X/100RA11VU2
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Models with different mounting flanges and shaft extensions: e.g., PGM4-4X/032RT11VU2
IV. Supplementary Notes
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Difference from External Gear Pumps: Internal gear pumps have a more compact structure, lower noise, and smaller pulsation, making them suitable for noise-sensitive applications.
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Installation and Maintenance: Inlet and outlet ports are at right angles for easy configuration; the pump body can be rotated, and reverse fluid delivery can be achieved by changing the motor rotation direction.
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Operating Limits: Maximum operating pressure is 210 bar. It is recommended to use within the rated pressure range to ensure service life.
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Accessories: Compatible with gear pump repair kits, seal kits, installation kits, etc.
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.

