PGP-2X, PGP-3X Internal meshing gear pump
PGP-2X series gear pump displacement range: 6.3cm3/rev to 16cm3/rev (such as PGP2-2X/006RE20VE4, PGP2-2X/016RE20VE4).
REXROTH PGP-2X, PGP-3X Internal Meshing Gear Pump Technical Specifications
1. Overview
2. Core Technical Data
|
Parameter
|
PGP-2X (Frame Size 2)
|
PGP-3X (Frame Size 3)
|
|---|---|---|
|
Geometric Displacement (Vg)
|
6.3 – 16.0 cm³/rev (sizes: 006=6.3, 008=8.0, 011=11.0, 013=13.0, 016=16.0)
|
20.0 – 32.0 cm³/rev (sizes: 020=20.0, 022=22.0, 025=25.0, 032=32.0)
|
|
Speed Range
|
Minimum: 600 min⁻¹; Maximum: 1800 min⁻¹
|
Minimum: 600 min⁻¹; Maximum: 1800 min⁻¹
|
|
Continuous Operating Pressure (pN)
|
250 bar
|
250 bar
|
|
Intermittent Operating Pressure (pmax)
|
315 bar (6s, 15% duty cycle) / 350 bar (1s, 10% duty cycle)
|
280 bar (for 20.0-25.0 cm³) / 315 bar (for 32.0 cm³); Peak pressure up to 350 bar
|
|
Flow Rate (1450 min⁻¹, 10 bar, 30 mm²/s)
|
9.1 – 23.2 l/min
|
29.0 – 47.2 l/min
|
|
Minimum Drive Power (≈1 bar)
|
0.75 – 1.2 kW
|
1.1 – 1.8 kW
|
|
Weight
|
3.0 – 3.6 kg
|
4.3 – 5.5 kg (e.g., PGP3-3X/020: 4.5 kg)
|
|
Inlet Pressure
|
0.8 – 2 bar
|
0.8 – 2 bar
|
3. Key Features
-
Leak-Gap Compensation: Axial and radial gap compensation design minimizes internal leakage, ensuring high efficiency across a wide range of speeds and viscosities.
-
Low Noise & Pulsation: Precision involute splining (conforming to SAE J498B/SAE J744B) reduces operating noise and flow ripple significantly.
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Long Service Life: Equipped with steel-backed copper-tin slide bearings, supporting up to 1×10⁶ load cycles at maximum permissible pressure.
-
Excellent Suction Characteristics: Suitable for low-viscosity and low-speed operation, with reliable suction performance even under harsh conditions.
-
Wide Compatibility: Can be combined with other REXROTH hydraulic pumps (PGH/PGF series, vane pumps, axial piston pumps) for flexible system configuration.
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Durable Construction: Steel-aluminum composite housing ensures lightweight and high structural strength, adapting to high-load working environments.
4. Hydraulic Fluid & Environmental Requirements
|
Parameter
|
Specification
|
|---|---|
|
Permissible Fluids
|
HL/HLP mineral oil (DIN 51524); HEES/HEPR synthetic hydraulic fluids (DIN ISO 15380)
|
|
Operating Temperature
|
-20 °C to +80 °C
|
|
Ambient Temperature
|
-20 °C to +60 °C
|
|
Viscosity Range
|
10 – 300 mm²/s; Maximum starting viscosity: 2000 mm²/s
|
|
Fluid Cleanliness
|
ISO 4406 (c) 20/18/15
|
5. Ordering Code Structure
|
Segment
|
Code
|
Meaning
|
|---|---|---|
|
Type
|
PGP
|
Internal gear pump, fixed displacement, gap-compensated
|
|
Series
|
P
|
High-pressure series (maximum peak pressure 350 bar)
|
|
Frame Size
|
2 / 3
|
BG2 (for PGP-2X) / BG3 (for PGP-3X)
|
|
Series Suffix
|
2X / 3X
|
20–29 (PGP-2X, fixed installation/port dimensions) / 30–39 (PGP-3X, fixed installation/port dimensions)
|
|
Size
|
006–016 (2X); 020–032 (3X)
|
Corresponds to geometric displacement (e.g., 006=6.3 cm³, 032=32.0 cm³)
|
|
Rotation
|
R
|
Clockwise (viewed from the drive shaft end)
|
|
Shaft
|
E / J
|
Parallel keyed shaft (ISO 3019-2) / Splined shaft (SAE J744, involute tooth system)
|
|
Port
|
20 / 07
|
Square flange port (DIN 3901/3902, metric thread) / SAE flange port (SAE J518)
|
|
Seal
|
V
|
FKM (fluorocarbon) seal
|
|
Mount
|
E4 / U2
|
4-hole mounting flange (ISO 3019-2, VDMA 24560 Part 1) / 2-hole mounting flange (ISO 3019-1)
|
|
Optional
|
K
|
Cover for mounting a PGF pump (next smaller frame size)
|
6. Key Dimensions (Unit: mm)
6.1 Frame Size 2 (PGP-2X)
|
Model
|
Displacement (cm³/rev)
|
a (±0.5)
|
b (±0.5)
|
c (±0.5)
|
Shaft (d/TK)
|
Mounting Thread
|
|---|---|---|---|---|---|---|
|
PGP2-2X/006
|
6.3
|
63
|
104
|
114
|
Ø20j6 / TK Ø40
|
M6, 9mm deep
|
|
PGP2-2X/008
|
8.0
|
64.8
|
107.5
|
117.5
|
Ø20j6 / TK Ø40
|
M6, 9mm deep
|
|
PGP2-2X/011
|
11.0
|
67.5
|
113
|
123
|
Ø20j6 / TK Ø40
|
M6, 12mm deep
|
|
PGP2-2X/013
|
13.0
|
70
|
118
|
128
|
Ø20j6 / TK Ø40
|
M6, 12mm deep
|
|
PGP2-2X/016
|
16.0
|
72.5
|
123
|
133
|
Ø20j6 / TK Ø40
|
M6, 12mm deep
|
6.2 Frame Size 3 (PGP-3X)
|
Model
|
Displacement (cm³/rev)
|
a
|
b
|
c
|
Shaft (d/TK)
|
Mounting Thread
|
|---|---|---|---|---|---|---|
|
PGP3-3X/020
|
20.0
|
52
|
126 (RE) / 134.5 (RJ)
|
136 (RE) / 144.5 (RJ)
|
Ø26 / TK Ø55
|
M8 (suction), M6 (pressure)
|
|
PGP3-3X/025
|
25.0
|
58
|
130.5 (RE) / 140.5 (RJ)
|
140.5 (RE) / 150.5 (RJ)
|
Ø26 / TK Ø55
|
M8 (suction), M6 (pressure)
|
|
PGP3-3X/032
|
32.0
|
67
|
149.5
|
159.5
|
Ø26 / TK Ø55
|
SAE 1 1/4″ (suction), SAE 3/4″ (pressure)
|
7. Material Specifications
|
Component
|
Material
|
|---|---|
|
Housing, Bearing Cover, Axial Discs
|
Steel-aluminum composite material
|
|
Ring Gear, Pinion Shaft, Stop Pin
|
High-strength steel
|
|
Slide Bearings
|
Copper-tin alloy with steel backing
|
|
Segment, Segment Carrier
|
Brass alloy
|
|
Sealing Rolls
|
High-performance plastic
|
|
Seals
|
FKM (fluorocarbon) rubber
|
8. Applications
-
Industrial Applications: Machine tools, trimming presses, medium-pressure hydraulic drives, variable-speed drive systems, open-circuit hydraulic systems requiring reliable power supply.
-
Mobile Applications: Lifting devices, fans, high-pressure durable mobile hydraulic systems.
9. Important Notes
-
Pressure peaks must not exceed the specified pmax, even for short durations.
-
No radial or axial forces are allowed on the drive shaft; precise alignment between the pump and drive unit is mandatory to avoid damage.
-
System-side pressure safeguarding (e.g., relief valves) is required to protect the pump from overpressure.
-
Seals are recommended to be replaced after 5 years of operation to ensure sealing performance.
-
The hydraulic fluid must meet the specified cleanliness and viscosity requirements to extend the pump’s service life.
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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.
