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R900352847

RADIAL PISTON PUMP PR4-1X/1,00-450WG01M01

Manufacturer: Bosch Rexroth

Material #: R900352847

Model : PR4-1X/1,00-450WG01M01


***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth PR4-1X/100-450WG01M01 (R900352847) is a high-quality radial piston pump designed for industrial applications in an open circuit configuration. This small piston pump is self-priming, featuring valve control and offering a long service life due to its hydrodynamic plain bearings. With its fixed displacement design, the PR4-1X/100-450WG01M01 ensures consistent performance and reliable operation. The pump's robust construction includes an eccentric shaft and multiple pump elements that work seamlessly to manage suction and displacement processes effectively. Its bidirectional rotation capability and NBR seals make it suitable for various hydraulic systems using HLP hydraulic fluid. The model has a maximum pressure rating of 450 bar and a size of 100 ccm, ensuring it can handle demanding tasks with ease. Designed with convenience in mind, the PR4-1X/100-450WG01M01 features bolt face mounting for straightforward installation and maintenance. Its compact dimensions allow it to fit into tight spaces without compromising performance. The lack of throughdrive highlights its standalone functionality, while the constant displacement type underscores its reliability in delivering consistent flow rates. This radial piston pump operates within a speed range from minimum to maximum RPM, providing a max flow rate that meets the requirements of various industrial applications. With its efficient design and durable construction, the Bosch Rexroth PR4-1X/100-450WG01M01 radial piston pump is an essential component for any system requiring precise hydraulic control and long-term dependability.

$2,585.00 USD

More are expected on June 23, 2026  
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Note: Sales tax, shipping, and applicable tariffs will be calculated at checkout.

Qty Price Savings
5-24 $2,520.37 USD $64.63 USD
25+ $2,455.75 USD $129.25 USD

Status: This product is temporarily out of stock. 


Qty: Delivered as early as June 23, 2026 when ordered in

This product is eligible for factory repair.
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Maximum operating pressure 700 bar
Max. pressure450
Shaft endSerration 10 x 12, DIN 5481
Size1
Speed min.1000
Productgroup ID9,10,11,12,13,14
Speed max.2000
Fastening4-hole fastening centering 50 mm
Max. flow2
Displacement typeconstant
Direction of rotationcounterclockwise and clockwise rotation
Connection diagram1
Through-drivewithout
Weight1.98
SealsNBR
Hydraulic fluidHLP

01

02

03

04

05

06

07

08

09

PR4

–

1X

/

W

01

*

Type

01

Radial piston pump, fixed displacement, maximum pressure 700 bar

PR4

Component series

02

Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)

1X

Size

NG

Pressure rating

 

03

Size – pressure stage (maximum)
(all sizes have three pistons)

0,40

700 bar

0,40-700

0,63

700 bar

0,63-700

1,00

450 bar

1,00-450

1,60

250 bar

1,60-250

2,00

175 bar

2,00-175

Direction of rotation

04

Viewed on drive shaft

clockwise and counter-clockwise

W

Drive shaft

05

Parallel keyed shaft

A

Splined shaft 10 x 12, DIN 5481 (for combination with vane pumps)

G

Line connection

06

Pipe thread according to ISO 228/1

01

Seal material

07

NBR seals

M

FKM seals

V

Pressure ports

08

1 Pressure port

01

3 Pressure ports

03

Additional details

09

Further details in the plain text

*

Design options with multi-circuit pumps

The following can be seen from the following schematic representations:

the number and position of the pressure ports which cylinders are combined.

Points mark the cylinders which are directly located at the pressurized pressure port.

Circles mark the cylinders which are not directly located at the pressurized pressure port.

The dashed and/or dot and dash lines show which cylinders are in each case combined.

The pressurized pressure ports are designated in clockwise direction.

The pressure port that - in clockwise direction - is closest to the suction port is referred to as P1 .

Type code

(Pos. 08)

Number of pressure ports

3 pistons

01

1

03

3

Size

0,40 0,63 1,00 1,60 2,00

Displacement

geometric

Vg

cm³

0.4 0.63 1 1.6 2

Drive speed

nmin

rpm

1000 1000 1000 1000 1000

nmax

rpm

3400 3000 2000 2000 2000

Operating pressure

absolute

Inlet

p

bar

0.8 ... 1.5 0.8 ... 1.5 0.8 ... 1.5 0.8 ... 1.5 0.8 ... 1.5

Outlet

continuous

pN

bar

700 700 450 250 175

Torque

max.

Drive shaft

Nm

10 10 10 10 10

Weight

m

kg

2.6 2.6 2.6 2.6 2.6

Drive shaft loading

Radial and axial forces cannot be absorbed! Radial and axial forces cannot be absorbed! Radial and axial forces cannot be absorbed! Radial and axial forces cannot be absorbed! Radial and axial forces cannot be absorbed!

Mounting type

Front face mounting Front face mounting Front face mounting Front face mounting Front face mounting

Line connections

Screw-in fittings Screw-in fittings Screw-in fittings Screw-in fittings Screw-in fittings

Direction of rotation, viewed on drive shaft

Counter-clockwise or clockwise, has no influence on the flow direction Counter-clockwise or clockwise, has no influence on the flow direction Counter-clockwise or clockwise, has no influence on the flow direction Counter-clockwise or clockwise, has no influence on the flow direction Counter-clockwise or clockwise, has no influence on the flow direction

Hydraulic fluid

Permissible hydraulic fluid 1)

Mineral oil (HLP) to DIN 51524-2

Operating temperature range

°C

-10 … +70

Viscosity range

mm²/s

10 … 200

Maximum admissible degree of contamination of the hydraulic fluid 1)

Class 20/18/15 according to ISO 4406 (c)
1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Flow/drive power

1)​

NG

pmax

bar

Vg

cm3

Pressure

bar

50

100

150

200

250

300

350

400

450

500

550

600

650

700

0,40

700

0.40

qV, eff

l/min

0.55

0.54

0.54

0.53

0.53

0.52

0.51

0.50

0.50

0.49

0.49

0.48

0.48

0.47

PA

kW

0.07

0.12

0.16

0.20

0.25

0.30

0.34

0.39

0.43

0.48

0.52

0.57

0.61

0.66

0,63

700

0.63

qV, eff

l/min

0.95

0.94

0.93

0.92

0.91

0.90

0.89

0.88

0.88

0.87

0.86

0.85

0.84

0.83

PA

kW

0.10

0.18

0.26

0.34

0.42

0.51

0.58

0.67

0.74

0.82

0.90

0.98

1.07

1.15

1,00

450

1.00

qV, eff

l/min

1.47

1.45

1.43

1.41

1.40

1.39

1.38

1.37

1.36

–

–

–

–

–

PA

kW

0.16

0.28

0.41

0.53

0.66

0.77

0.89

1.02

1.14

–

–

–

–

–

1,60

250

1.60

qV, eff

l/min

2.35

2.35

2.34

2.33

2.33

–

–

–

–

–

–

–

–

–

PA

kW

0.22

0.43

0.64

0.85

1.06

–

–

–

–

–

–

–

–

–

2,00

175

2.00

qV, eff

l/min

2.98

2.97

2.96

–

–

–

–

–

–

–

–

–

–

–

PA

kW

0.31

0.58

0.86

–

–

–

–

–

–

–

–

–

–

–

1) Mean values measured at n = 1450 rpm, Θ = 50 °C

For pumps with 3 pressure ports, type “03“ applies the following:

Using various operating pressures for each cylinder the drive power of the highest cylinder pressure is to be selected.

▼ Example: Pump PR4–1X/0.63–700...03

 

Ports 1 and 2, respectively loaded with 450 bar, 3 is circulating at zero pressure.

PA = 0.74 kW

For applications outside these parameters, please consult us!

Sound pressure level

Note

•

Characteristic curves are mean values, measured at n = 1450 rpm; ν = 41 mm²/s, θ = 50 °C

•

Sound pressure level measured in acoustic room according to DIN 45635, part 26

•

Distance: Microphone – pump = 1 m

•

At a system pressure below 4 bar and a viscosity > 150 mm²/s audible valve noise may occur

•

Sound pressure level at system pressure < 4 bar: ≤ 58 dB(A)

Version with one pressure port

Dimensions in mm

1

Pressure port P

2

Suction port S

3

Woodruff key 5 x 6.5 DIN 6888

Version with three pressure ports

Dimensions in mm

1

Pressure port P

2

Suction port S

3

Woodruff key 5 x 6.5 DIN 6888

Installation instructions

Fluid tank

Adjust useful volume of the tank to the operating conditions. The admissible fluid temperature must not be exceeded; use coolers, if necessary.

 

Lines and ports

Remove protection plugs from the pump. We recommend the use of seamless precision steel pipes according to DIN EN 10305-1 and removable pipe connections. Select the clear width of pipes according to the ports (suction speed 1 to 1.5 m/s). Inlet pressure, see technical data. Thoroughly clean pipelines and fittings prior to installing.

Proposal for piping layout

Under no circumstances may drain and returning fluid be drawn directly into the suction port again, i.e., select the largest possible distance between suction line and return line. The return drain must always be below the oil level. Ensure suction-tight installation of the pipes.

Filter

Use a return flow or pressure filter, if possible.

(Suction filters only in connection with underpressure switch/clogging indicator).

 

Hydraulic fluid

Please observe our specifications according to data sheet 90220. We recommend brand name hydraulic fluids. Do not mix hydraulic fluids of different types since this can result in decomposition and deterioration of the lubricity. The hydraulic fluid must be replaced at regular intervals according to the operating conditions. When doing this, the hydraulic fluid reservoir must also be cleaned of residues.

 

Drive

Electric motor + pump carrier + coupling + pump

No radial or axial forces permissible on the pump drive shaft! Motor and pump must be exactly aligned! Always use a coupling that is suitable for compensating for shaft offsets! When installing the coupling, avoid axial forces, i.e., when installing, do not hammer or press the coupling onto the shaft! Use the female thread on the drive shaft.

Installation positions

Horizontal installation (B3, B5): Always position the suction port over the pressure port. This arrangement supports bleeding of the pump. Vertical installation (V1): No restrictions

B3

B5

V1

Project planning information

 

When using radial piston pumps, we recommend particularly observing the information specified below. Project planning, assembly and commissioning of the radial piston pumps require the employment of trained experts.

 

Technical data

All specified characteristic depend on production tolerances and are valid at certain boundary conditions. Please note that consequently, certain scatter ranges are possible and that with changed boundary conditions (e.g. viscosity), the characteristics may also change.

 

Characteristic curves for flow and consumed power

When designing the drive motor, please observe the maximum application parameters possible.

 

Noise

The values for sound pressure level shown under Diagrams/characteristic curves have been measured according to DIN 45635 part 26. That means only the sound emission of the pump is shown. Environmental influences (such as place of installation, piping, etc.) have been eliminated. The values are in each case only valid for one pump. For circulation at zero pressure, the pressure line must be preloaded by means of a check valve (cracking pressure p = 5 bar) due to noise development.

 

Notice

Due to the power unit construction and the influence at the final place of installation of the pump, the sound pressure level will usually be 5 to 10 dB(A) higher than the value of the pump itself.

Commissioning instructions

 

Air bleeding

All PR4 radial piston pumps are self-priming. Fill the housing with filtered oil via port S. During initial commissioning, set the pump to pressureless circulation. To do so, release the pressure hose and direct it into the reservoir. Before initial commissioning, the pump must be air-bled to protect it against damage. Switch to pressureless circulation, or direct the pressure line or pressure hose back into the reservoir. Briefly switch the pump on (inching mode). Should the pump not displace bubble-free oil after approx. 20 seconds, re-check the system. After the operating values have been reached, check the pipe connections for leakage. Check the operating temperature. Be aware of noise generation.

 

Commissioning

Check whether the system is thoroughly and properly installed. Start the pump without load and let it displace fluid without pressure for a few seconds in order to ensure sufficient lubrication. In no case may the pump be operated without hydraulic fluid!

 

Note

Adjustment, maintenance and repair of the pump may only be carried out by authorized, trained and instructed personnel! Use only original Rexroth spare parts! The pump may only be operated within the permissible data. The pump may only be operated when in perfect condition! When carrying out any work on the pump (e.g. installation and removal) the system must be switched off and depressurized! Unauthorized conversions and changes, affecting the safety and function are not permissible! Mount protective devices (e.g., coupling protection)! Do not remove any existing protective devices! The generally valid safety and accident prevention regulations must be strictly observed!

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