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BOSCH REXROTH
PGZ5-1X/100RA07VE4
R901230052
Gerotor Pumps

Ring gear pumps: PGZ5-1X

$2,991.00

BOSCH REXROTH

MATERIAL:  R901230052

SUMMARY:  Ring gear pumps: PGZ5-1X

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Set-up

Hydraulic pumps of type PGZ type are gerotor pumps with constant displacement.

They basically comprise of: Flange housing (1), shaft (2), the displacer element inner rotor (3) and gerotor (4) as well as driving disk (5) and cover (6).

 

Suction and displacement procedure

Via the driving disk, the shaft drives the inner rotor in the indicated direction of rotation. The inner rotor cogs with the gerotor to turn it.

The tooth clearances opening in the suction range (S) suck in the hydraulic fluid. The separation of suction and pressure range is implemented on the opposite side of the meshing area (Z) by means of a radial gap (R) created by the

tooth profile of the gerotor and the inner rotor sliding against each other.

Within the pressure range (P), the hydraulic fluid is pumped into the pressure port by means of the chambers becoming smaller.

 

Properties

The toothing with cycloid contour has a large meshing length. Filling and displacement areas cover a large angle of rotation. This allows for little flow pulsation and thus very low operating noise.

The shaft and the displacer are supported by a slide bearing and work in a wear-free manner when they are used as intended.

Gerotor pumps PGZ are self-priming.

 

Materials used

Flange housing (1): aluminum Shaft (2), inner rotor (3), gerotor (4) and driving disk (5): steel Cover (6): Cast iron

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Hydraulic pumps of type PGZ type are gerotor pumps with constant displacement. Via a driving disk, the shaft drives the inner rotor in the indicated direction of rotation. The inner rotor cogs with the gerotor to turn it. The tooth clearances opening in the suction range suck in the hydraulic fluid. The separation of suction and pressure range is implemented on the opposite side of the meshing area by means of a radial gap created by the tooth profile of the outer and the inner rotor sliding against each other. Within the pressure range, the hydraulic fluid is pumped into the pressure port by means of the chambers becoming smaller.

01

02

03

04

05

06

07

08

09

10

PGZ

1X

/

R

07

V

*

Type

01

Gerotor pump , low-pressure

PGZ

Frame size

02

BG4

4

BG5

5

Component series

03

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

1X

Size

04

BG4

NG

Displacement/rotation

20

21,0 cm3

20

32

33,4 cm3

32

40

42,1 cm3

40

50

52,0 cm3

50

63

64,4 cm3

63

80

84,2 cm3

80

BG5

63

64,4 cm3

63

80

84,2 cm3

80

100

105,3 cm3

100

140

136,3 cm3

140

Direction of rotation

05

clockwise rotation (looking at the shaft end)

R

Shaft design

06

cylindrical

A

SAE involute gear 11T

T

SAE involute gear 13T

R

Line connection

07

SAE flange standard pressure series

07

Seal material

08

FKM seals

V

Flange design

09

ISO 4-hole mounting flange according to ISO 3019-2 and VDMA 24560

E4

SAE 2-hole mounting flange

U2

ISO 2-hole mounting flange according to ISO 3019-2, secondary pump for through-drive KB2

B2

ISO 2-hole mounting flange according to ISO 3019-2, secondary pump for through-drive KB3

B3

Type of connection

10

further details in the plain text
e.g. special versions

*

Preferred types PGZ-1X

Type

NG

Part number

PGZ4-1X/020RA07VE4

R901230020

PGZ4-1X/032RA07VE4

R901230024

PGZ4-1X/040RA07VE4

R901230028

PGZ4-1X/050RA07VE4

R901230032

PGZ4-1X/063RA07VE4

R901230036

PGZ4-1X/080RA07VE4

R901230040

PGZ5-1X/100RA07VE4

R901230052

PGZ5-1X/140RA07VE4

R901230056

For the possible flange shaft configurations, please refer to the selection tables.

Frame size

 

4 5

Size

 

20 32 40 50 63 80 63 80 100 140

Mounting type

 

ISO 4-hole mounting flange according to ISO 3019-2 and VDMA 24560
SAE 2-hole mounting flange
ISO 2-hole mounting flange according to ISO 3019-2, secondary pump for through-drive KB2
ISO 2-hole mounting flange according to ISO 3019-2, secondary pump for through-drive KB3

Line connections

 

Flange connection

Shaft load

 

Radial and axial forces cannot be transmitted

Direction of rotation

 

Clockwise rotation (looking at the shaft end)

Drive speed

n

 

rpm

200 ... 3,000 200 ... 2,300 200 ... 1,800 200 ... 3,000 200 ... 2,300 200 ... 1,800 200 ... 1,500

Displacement

Vg

 

cm³

21 33.4 42.1 52 64.4 84.2 64.4 84.2 105.3 136.3

Minimum drive power required

at Δp ≈ 1 bar, n ≈ 1450 rpm

 

kW

0.75 1.1 1.5

at Δp ≈ 10 bar, n ≈ 1450 rpm

 

kW

1.5 2.2 3 4 5.5

Flow, max. 1)

qV

 

l/min

28 46 58 71 88 116 88 116 144 186

Operating pressure, absolute 2)

Inlet

pmin-max

 

bar

0.7 ... 2

Nominal pressure, permanent

Outlet

pN

 

bar

15

Mass

m

 

kg

4.7 5.3 5.6 6 6.7 7.8 6.6 7.7 8.9 10.7
1) Measured n = 1450 rpm, p = 10 bar and v = 30 mm²/s
2) Short-time, during start 0,5 bar

Hydraulic fluid

Hydraulic fluid

 

Permissible hydraulic fluid 1)

Mineral oil (HLP) to DIN 51524-2

Hydraulic fluid temperature range 2)

°C

-20 … +80

Ambient temperature range

°C

-20 … +80

Viscosity range

mm²/s

10 … 2,000

Maximum admissible degree of contamination of the hydraulic fluid 3)

Class 21/18/15 according to ISO 4406 (c)
1) Other hydraulic fluids on request
2) Observe the admissible viscosity range!
3) 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.

For applications outside these parameters, please consult us!

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Frame sizes 4 and 5, type...VE4

PGZ 4-1X/ … RA07VE4

PGZ 5-1X/ … RA07VE4

Drive shaft cylindrical,

4-hole mounting flange according to ISO 3019-2 and VDMA 24560

 

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Type

NG

Part number

L1

L2

H1

H2

S1)

P1)

PGZ4-1X/020RA07VE4

R901230020

116,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/032RA07VE4

R901230024

121,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/040RA07VE4

R901230028

125 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/050RA07VE4

R901230032

129 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/063RA07VE4

R901230036

134 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/080RA07VE4

R901230036

142 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ5-1X/063RA07VE4

R901230044

134 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/080RA07VE4

R901230044

142 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/100RA07VE4

R901230052

150,5 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/140RA07VE4

R901230056

163 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

1) For the exact dimensions see Connections

Frame sizes 4 and 5, type ...VU2

PGZ 4-1X/ … RT07VU2

PGZ 5-1X/ … RT07VU2

Drive shaft geared,

SAE 2-hole mounting flange

 

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Type

NG

Part number

L1

L2

H1

H2

S1)

P1)

PGZ4-1X/020RT07VU2

R901230021

116,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/032RT07VU2

R901230025

121,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/040RT07VU2

R901230029

125 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/050RT07VU2

R901230033

129 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/063RT07VU2

R901230037

134 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/080RT07VU2

R901230041

142 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ5-1X/063RT07VU2

R901230045

134 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/080RT07VU2

R901230049

142 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/100RT07VU2

R901230053

150,5 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/140RT07VU2

R901230057

163 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

1) For the exact dimensions see Connections

Frame sizes 4 and 5, type ...VB2

PGZ 4-1X/ … RT07VB2

PGZ 5-1X/ … RT07VB2

Drive shaft geared,

ISO 2-hole mounting flange according to ISO 3019-2

(secondary pump for through-drive KB2)

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Type

NG

Part number

L1

L2

H1

H2

S1)

P1)

PGZ4-1X/020RT07VB2

R901230022

116,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/032RT07VB2

R901230026

121,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/040RT07VB2

R901230030

125 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/050RT07VB2

R901230034

129 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/063RT07VB2

R901230038

134 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/080RT07VB2

R901230042

142 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ5-1X/063RT07VB2

R901230046

134 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/080RT07VB2

R901230050

142 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/100RT07VB2

R901230054

150,5 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/140RT07VB2

R901230058

163 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

1) For the exact dimensions see Connections

Frame sizes 4 and 5, type ...VB3

PGZ 4-1X/ … RR07VB3

PGZ 5-1X/ … RR07VB3

Drive shaft geared,

ISO 2-hole mounting flange according to ISO 3019-2

(secondary pump for through-drive KB3)

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Type

NG

Part number

L1

L2

H1

H2

S1)

P1)

PGZ4-1X/020RR07VB3

R901230023

116,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/032RR07VB3

R901230027

121,5 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/040RR07VB3

R901230031

125 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/050RR07VB3

R901230035

129 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/063RR07VB3

R901230039

134 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ4-1X/080RR07VB3

R901230043

142 mm

42,5 mm

77,4 mm

79,6 mm

1 1/2“

1“

PGZ5-1X/063RR07VB3

R901230047

134 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/080RR07VB3

R901230051

142 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/100RR07VB3

R901230055

150,5 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

PGZ5-1X/140RR07VB3

R901230059

163 mm

48,5 mm

72,9 mm

76,1 mm

2“

1 1/4“

1) For the exact dimensions see Connections

Ports

Porting pattern suction port “S”

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

Porting pattern pressure port “P”

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

BG

Porting pattern / suction port S

D1

D2

S1

S2

Porting pattern / pressure port P

D3

D4

P1

P2

4

1 1/2“

Ø38,1 mm

M12; 21 mm

 

69,9 mm

35,7 mm

1“

Ø25,4 mm

M10; 16 mm

52,4 mm

26,2 mm

5

2“

Ø50,8 mm

M12; 21 mm

77,8 mm

42,9 mm

1 1/4“

Ø31,8 mm

M10; 18 mm

58,7 mm

 

30,2 mm

1. General information

This project planning information refers to the specific properties of the Rexroth PGZ.-1X gerotor pump. Comprehensive general information and suggestions are contained in the Hydraulics Trainer, volume 3 "Project planning information and design of hydraulic systems", RE 00281.

 

1.1 Intended use

Rexroth gerotor pumps are intended for use in cooling, filter and lubricating circuits in machine and plant construction. During project planning, the basic principles of the EU Machinery Directive or comparable national regulations outside the EU must be observed. They must not be used in potentially explosive environments in accordance with directive 94/9/EC (ATEX). Use as hydraulic motor is not admissible!

 

1.2 Technical data

The plant or machine manufacturer must ensure compliance with the admissible technical data and operating conditions. The pump itself does not contain a device to prevent operation outside the admissible data.

All specified technical performance features are average values and apply with the specified boundary conditions. In case of modifications to the basic conditions (e.g. viscosity), the technical data may change as well. Distribution corresponding to the relevant state-of-the-art is possible.

Operating the pump outside of the admissible Technical data is possible to a certain extent, however, this requires the explicit written approval by Bosch Rexroth.

 

2. Hydraulic project planning

 

2.1 Place of installation

When installing the pump more than 10 m below the tank, the reduction of the inlet pressure to the maximum admissible value must be ensured by means of additional measures.

 

2.2 Suction line

The line cross-sections must be rated for the designed flows in a manner that an ideal suction speed of 0.6 to 1.2 m/s is achieved on average. The suction speed must not exceed a maximum value of 2 m/s.

The suction cross-sections at the pump itself are designed for the maximum flow and can therefore only be used as reference. In case of continuous operation with speeds lower than the admissible maximum speed, the suction tube diameter is to be dimensioned smaller than the suction port of the pump in accordance with the actual suction speed.

All in all, the suction line is to be designed so that the admissible input operating pressure is complied with (0.7 to 2 bar abs.)! Bends and the combination of the suction pipes of several pumps are to be avoided.

If suction filters must be used, make sure that the lowest admissible inlet operating pressure is not exceeded on the system side, even if the filter is contaminated.

Please ensure air tightness of the transitions and dimensional stability of the suction tube to the external air pressure.

The immersion depth of the suction pipe should be as large as possible. Dependent on the internal tank pressure, the viscosity of the hydraulic fluid and the flow ratios within the tank, no vortex must be formed even during maximum flow. Otherwise, there is the risk that air is sucked in.

We recommend selecting suction pipes according to AB 23-03.

 

 

Dimensions in mm

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

2.3 Pressure limitation

The PGZ gerotor pump does not comprise any device for compliance with the maximum operating pressure. Setting and limiting the admissible operating pressure has to be ensured on the system side.

 

3. Mechanical project planning

 

3.1 Disassembly and installation option

For disassembling and mounting the pump on the drive, accessibility has to be ensured on the system side. Screws of property class 8.8 or 10.9 have to be provided for mounting purposes.

 

3.2 Mounting

The screws must be accessible on the machine side so that the required tightening torque can be applied. The tightening torque of the screws is based on the operating conditions and involved elements of the

screw connection and has to be specified by the manufacturer in the power unit, machine or system project planning.

 

3.3 Required power unit functions

Hydraulic power units should at least be equipped with the following features:

Tanks, the internal pressure of which corresponds to the ambient pressure in accordance with the design, have to be equipped with breathing filters for pressure compensation purposes. The hydraulic fluid should only be filled in using filling connections excluding filling with unfiltered hydraulic fluid. The ingress of contamination or humidity must be avoided. In case of use in highly contaminated environments, the tank must to this end be pre-tensioned by means of air pressure. If cleansing of the external tank side is intended or to be expected during the period of use, tank fittings for pipes, lines, or hoses have to be selected, which ensure safe sealing against external pressurization with water jet.

 

3.4. Environmental conditions

When operating the pump in salt-containing or corrosive environments or when pressure loading with strongly abrasive substances is possible, it has to be ensured on the system side that the shaft seal ring and the sealing area of the shaft do not make direct contact with the environment and that the pump is provided with suitable corrosion protection.

 

3.5 Installation positions

B3

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

B5

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

V1

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

IM V2

technical illustration-PGZ5-1X/100RA07VE4-Ring gear pumps: PGZ5-1X

4. Maintenance schedule and operational safety

For safe operation and a long life cycle of the pump, a maintenance schedule has to be developed for the power unit, the machine, or the system. The maintenance schedule must ensure that the intended or admissible operating conditions of the pump are complied with over the entire period of use.

In particular, compliance with the following operating parameters has to be ensured:

the required oil cleanliness the operating temperature range the hydraulic fluid filling level

Furthermore, the pump and the system have to be checked for modifications of the following parameters on a regular basis:

Vibrations Noise Temperature pump – hydraulic fluid in the tank Foam formation in the tank Leak-tightness Operating pressure for use in lubrication systems

Modifications of these parameters indicate wear of components (e.g. drive motor, coupling, pump, etc.). The cause must be identified and remedied immediately. In order to achieve high operational safety of the pump in the machine or system, we recommend checking the parameters mentioned above continuously and automatically

and shutting the system off automatically in case of modifications exceeding the usual fluctuations in the intended operating range.

Plastic components of drive couplings should be replaced regularly, however, after 5 years at the latest. The relevant manufacturer's specifications must be considered and be given priority.

For preventive maintenance of the pump, we recommend having the seals replaced after a maximum operating time of 5 years by an authorized Bosch Rexroth service company.

 

5. Accessories

 

5.1 SAE connection flanges

We recommend selecting the SAE flanges for suction and pressure port according to AB 22-15 (with welded connection) or AB 22-13 (with threaded connection).

 

5.2 Other accessories

To install the Rexroth PGZ.-1X gerotor pump on electric motors, we recommend selecting the pump carriers according to AB 41-20 and torsionally flexible couplings according to AB 33-22.

Notice!

Please also observe the following documentation:

Data sheet RE 07008 General information on hydraulic products Data sheet RE 07900 General information on assembly, commissioning

and maintenance of hydraulic systems

Data sheet RE 90220 General information on hydraulic fluids on mineral oil basis