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BOSCH REXROTH
PGH4-3X/040RE11VE4
R901147108
Gear Pumps

Gear pumps: PGH4.-3x/

$3,733.00

BOSCH REXROTH

MATERIAL:  R901147108

SUMMARY:  Gear pumps: PGH4.-3x/

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Set-up

Hydraulic pumps of type PGH.-3X are gap-compensated internal gear pumps with constant displacement.

They basically comprise of: Mounting flange (1), housing (2), cover with through-drive (3), pinion shaft (4), internal gear (5), plain bearings (6), axial washers (7) and stop pin (8) as well as the radial compensation consisting of segment (9), segment support (10) and the seal rolls (11).

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Suction and displacement procedure

The hydrodynamically mounted pinion shaft (4) drives the internally geared internal gear (5) in the direction of rotation shown.

The tooth clearances opening in the suction range suck in the fluid. The fluid is transported into the tooth clearances of pinion and internal gear, from the suction range (S) into the pressure range (P).

There, the fluid is displaced from the closing tooth clearances and delivered into the pressure port (P).

Suction and pressure range are separated by the radial compensation elements (9 to 11) and the tooth engagement between internal gear and pinion shaft.

Axial compensation

The displacement area in the pressure range is axially sealed by axial washers (7).

To the sides of the axial washers facing away from the displacement area a pressure field (12) is applied. These fields balance the axial washers vis-à-vis the displacement area, which results in a perfect sealing with low mechanical losses.

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Radial compensation

The radial compensation elements consist of segment (9), segment support (10) and seal rolls (11).

Segment (9) and segment support (10) are arranged in the pressure field so that the resulting compressive force is basically accepted by the stop pin.

A small compressive force component presses segment and segment support onto the tooth tips of pinion shaft and internal gear and in this way provides for the sealing of the pressure range to the suction range with automatic clearance adjustment.

This is the prerequisite for constantly high volumetric efficiency during the entire operating time.

The clearance adjustment of segment and segment support is made possible by the seal rolls located inbetween.

Hydrodynamic and hydrostatic mounting

The pinion shaft (4) is accepted by hydrodynamically lubricated radial plain bearings (6).

The internal gear (5) is mounted hydrostatically in the housing.

Gear tooth system

The gear tooth system with involute edges has a large meshing length for little flow and pressure pulsation and thus guarantees low-noise running.

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH-type hydraulic pumps are gap-compensated internal gear pumps with fixed displacement. The hydrodynamically mounted pinion shaft drives the internal gear. The pinion shaft and internal gear tooth clearances opening in the suction range suck in the hydraulic fluid and transport it to the pressure range. The suction and pressure range are separated by the radial compensation elements and the tooth engagement between the internal gear and pinion shaft.

Single pumps

01

02

03

04

05

06

07

08

09

10

11

PG

H

3X

/

*

01

Internal gear pump, fixed displacement, gap-compensated

PG

Series

02

High-pressure pump

H

Frame size

03

BG4

4

BG5

5

04

Component series: Component series 30 to 39 (30 to 39: unchanged installation and connection dimensions)

3X

Size

05

BG4

NG

Displacement/rotation

20

20,10 cm3

020

25

25,30 cm3

025

32

32,70 cm3

032

40

40,10 cm3

040

50

50,70 cm3

050

BG5

63

64,70 cm3

063

80

81,40 cm3

080

100

100,20 cm3

100

125

125,30 cm3

125

160

162,80 cm3

160

200

200,40 cm3

200

250

250,50 cm3

250

Direction of rotation (looking at the shaft end)

06

Clockwise

R

Counterclockwise rotation (upon request)

L

Shaft design

07

Cylindrical

E

SAE involute gear

R

Line connection

3)

08

SAE flange standard pressure series

07

SAE flange high-pressure series

11

Seal material

09

FKM seals

V

Shaft seal ring made of NBR (other seals made of FKM)

W 2)

Type of connection

10

SAE 2-hole mounting flange

U2

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

E4 1)

11

Further details in the plain text

*

1) only in connection with cylindrical shaft (according to VDMA), only with clockwise rotation
2) in case of operation with HFC fluid
3) for every size, one type of connection 07 or 11 has been defined:
07: PGH5-3X/200/250…
11: PGH4-3X/020/025/032/040/050…
PGH5-3X/063/080/100/125/160...

Not all variants according to the type key are possible! Please select the desired pump using the selection tables (see Dimensions) or after consultation with Bosch Rexroth.

The suction ports have all been designed in standard pressure series (dimensions see Dimensions).

Preferred types PGH4-3X

Type

Part number

PGH4-3X/020RE11VU2

R901147100

PGH4-3X/025RE11VU2

R901147101

PGH4-3X/032RE11VU2

R901147102

PGH4-3X/040RE11VU2

R901147103

PGH4-3X/050RE11VU2

R901147104

Preferred types PGH5-3X

Type

Part number

PGH5-3X/063RE11VU2

R901147115

PGH5-3X/080RE11VU2

R901147116

PGH5-3X/100RE11VU2

R901147117

PGH5-3X/125RE11VU2

R901147118

PGH5-3X/160RE11VU2

R901147119

PGH5-3X/200RE07VU2

R901147120

PGH5-3X/250RE07VU2

R901147121

All internal gear pumps of type PGH-3 can be combined, every pump is equipped with an output shaft gear tooth system. The combination possibilities and die material numbers of the required combination parts are available in the following table.

Please observe the project planning information for pump combinations.

Back pump

Front pump

Part number

PGH4-3X

PGH5-3X

PGH2-2X/...R...U2 (RD10223)

R901155288

R901155283

PGH3-2X/...R...U2 (RD10223)

R901155288

R901155283

PGH4-3X/...R...U2

R901155289

R901155284

PGH5-3X/...R...U2

R901155285

PGF2-2X/...J...U2 (RD10213)

R901155288

R901155283

PGP2-2X/...J...U2 (RD10231)

R901155288

R901155283

PGF3-3X/...J...U2 (RD10213)

R901155287

R901155282

PGP3-3X/...J...U2 (RD10231)

R901155287

R901155282

PVV/Q1-1X/...J…B (RD10335)

R901155287

R901155282

PVV/Q2-1X/...J…B (RD10335)

R901155287

R901155282

PVV/Q4-1X/...J…C (RD10335)

R901155286

PVV/Q5-1X/...J…C (RD10335)

R901155286

AZPF-1X/...RR...B (RD10089)

R901155288

R901155283

Pump combinations

01

02

03

04

05

06

07

08

09

10

11

12

13

14

3X

/

+

/

+

/

01

2-fold

P2

3-fold

P3

02

Series of the 1st pump

1)

03

Component series of the 1st pump

1)

3X

04

Size of the 1st pump

1)

05

Series of the 2nd pump

1)

06

Component series of the 2nd pump

1)

07

Size of the 2nd pump

1)

08

Series of the 3rd pump

1)

09

Component series of the 3rd pump

1)

10

Size of the 3rd pump

1)

Direction of rotation (looking at the shaft end)

11

Clockwise

R

Counterclockwise rotation (upon request)

L

Shaft design of the 1st pump

12

Cylindrical

E

SAE involute gear

R

Seal material

13

FKM seals

V

Shaft seal ring made of NBR (other seals made of FKM)

W

Type of connection of the 1st pump

14

SAE 2-hole mounting flange

U2 2)

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

E4 3)

1) Detailed information see type key
2) In connection with cylindrical and geared shaft
3) only in connection with cylindrical shaft (according to VDMA), only with clockwise rotation

Order example:

P3GH5-3X/160+GH5-3X/100+GH4-3X/050REVE4

Hydraulic fluid

Hydraulic fluid

 

Permissible hydraulic fluid

Mineral oil (HLP) to DIN 51524-2

Special fluid 1)

Water polymer solutions HFC according to DIN EN ISO 12922
HEES liquids according to DIN ISO 15380
Flame-resistant, water-free hydraulic fluid HFD-U according to VDMA 24317

Operating temperature range

Standard liquid

°C

-10 … +80

Special fluid

°C

-10 … +50

Ambient temperature range

°C

-20 … +60

Viscosity range

mm²/s 2)

10 … 300

mm²/s 3)

10 … 100

Admissible start viscosity 4)

mm²/s

2000

Maximum admissible degree of contamination of the hydraulic fluid 5)

Class 20/18/15 according to ISO 4406 (c)
1) Drive speed nmax = 2000 rpm; seal design W
2) up to n = 1800 rpm
3) up to n = 3000 rpm
4) at n = 400 to 1800 rpm
5) The cleanliness classes specified for the components must be adhered to in the hydraulic system. Effective filtration prevents faults and at the same time increases the life cycle of the components.

Frame size

4 5

Size

     

20 25 32 40 50 63 80 100 125 160 200 250

Displacement

geometric

Vg

cm³

20.1 25.3 32.7 40.1 50.7 64.7 81.4 100.2 125.3 162.8 200.4 250.5

Drive speed

nmin

rpm

200

nmax

rpm

3000

Operating pressure, absolute

Inlet 1)

p

bar

0.8 ... 2

Outlet

continuous

Standard liquid

pN

bar

315 250 315 210 170 135

Special fluid 2)

pN

bar

220 175 220 145 115 90

Outlet

intermittent

Standard liquid

pmax

bar

350 250 350 260 210 170

Special fluid 2)

pmax

bar

245 210 245 180 145 115

Flow 3)

qV

l/min

28.9 36.3 46.9 57.6 72.8 92.8 116.9 143.8 179.8 233.7 287.7 359.6

Power consumption

Minimum drive power required 4)

pzu

kW

1.1 1.5 1.8 2.2 3 4 5.5 7.5

Mass

m

kg

14 14.5 15 16 17 42 43.5 45.5 48 52 55.5 60.5

Shaft load

Radial and axial forces (e.g. belt pulley) only after coordination

Mounting type

Flange mounting
1) Short-time, during start 0,6 bar
2) For special fluids, observe the restrictions of the technical data!
3) at n = 1450 min-1, p = 10 bar, v = 30 mm2/s
4) at p ≈ 1 bar

For applications outside these parameters, please consult us!

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Frame size 4

PGH4-3X/...RE...VU2

PGH4-3X/...LE...VU2

Drive shaft cylindrical,

SAE 2-hole mounting flange

Type

NG

Part number

“R” clockwise rotation

“L” counterclockwise rotation

L1

L2

L3

S 1)

P 1)

PGH4‑3X/020..E11VU2

R901147100

upon request

145 mm

70,5 mm

129 mm

1″ S

3/4″ H

PGH4‑3X/025..E11VU2

R901147101

upon request

150 mm

73 mm

134 mm

1 1/4″ S

3/4″ H

PGH4‑3X/032..E11VU2

R901147102

upon request

157 mm

76,5 mm

141 mm

1 1/2″ S

1″ H

PGH4‑3X/040..E11VU2

R901147103

upon request

164 mm

80 mm

148 mm

1 1/2″ S

1″ H

PGH4‑3X/050..E11VU2

R901147104

upon request

174 mm

85 mm

158 mm

2″ S

1″ H

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2) With multiple pumps, the combination part will start from here

The figure shows a pump with clockwise rotation; with a pump with counterclockwise rotation, the pressure port is on the opposite side!

PGH4-3X/... RE...VE4

Drive shaft cylindrical,

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

Type

NG

Part number

“R” clockwise rotation

L1

L2

L3

S 1)

P 1)

PGH4-3X/020RE11VE4

R901147105

145 mm

70,5 mm

129 mm

1″ S

3/4″ H

PGH4-3X/025RE11VE4

R901147106

150 mm

73 mm

134 mm

1 1/4″ S

3/4″ H

PGH4-3X/032RE11VE4

R901147107

157 mm

76,5 mm

141 mm

1 1/2″ S

1″ H

PGH4-3X/040RE11VE4

R901147108

164 mm

80 mm

148 mm

1 1/2″ S

1″ H

PGH4-3X/050RE11VE4

R901147109

174 mm

85 mm

158 mm

2″ S

1″ H

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2) With multiple pumps, the combination part will start from here

PGH4-3X/...RR...VU2

PGH4-3X/...LR...VU2

Drive shaft geared, SAE 2-hole mounting flange

(central and back pump in pump combinations)

Type

NG

Part number

L1

L2

L3

S 1)

P 1)

“R” clockwise rotation

“L” counterclockwise rotation

PGH4-3X/020..R11VU2

R901147110

upon request

145 mm

70,5 mm

129 mm

1″ S

3/4″ H

PGH4-3X/025..R11VU2

R901147111

upon request

150 mm

73 mm

134 mm

1 1/4″ S

3/4″ H

PGH4-3X/025..R11VU2

R901147112

upon request

157 mm

76,5 mm

141 mm

1 1/2″ S

1″ H

PGH4-3X/040..R11VU2

R901147113

upon request

164 mm

80 mm

148 mm

1 1/2″ S

1″ H

PGH4-3X/050..R11VU2

R901147114

upon request

174 mm

85 mm

158 mm

2″ S

1″ H

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2) With multiple pumps, the combination part will start from here

Frame size 5

PGH5-3X/...RE...VU2

PGH5-3X/...LE...VU2

Drive shaft cylindrical, SAE 2-hole mounting flange

Type

NG

Part number

L1

L2

L3

S 1)

P 1)

“R” clockwise rotation

“L” counterclockwise rotation

PGH5-3X/063..E11VU2

R901147115

upon request

210 mm

105,5 mm

194 mm

2″ S

1 1/4″ H

PGH5-3X/080..E11VU2

R901147116

upon request

218 mm

109,5 mm

202 mm

2″ S

1 1/4″ H

PGH5-3X/100..E11VU2

R901147117

upon request

227 mm

114 mm

211 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/125..E11VU2

R901147118

upon request

239 mm

120 mm

223 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/160..E11VU2

R901147119

upon request

257 mm

129 mm

241 mm

3″ S

2″ H

PGH5-3X/200..E07VU2

R901147120

upon request

275 mm

138 mm

259 mm

3 1/2″ S

2″ S

PGH5-3X/250..E07VU2

R901147121

upon request

299 mm

150 mm

283 mm

3 1/2″ S

2 1/2″ S

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2) With multiple pumps, the combination part will start from here

PGH5-3X/...RE...VE4

Drive shaft cylindrical,

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

Type

NG

Part number

L1

L2

L3

S 1)

P 1)

“R” clockwise rotation

PGH5-3X/063RE11VE4

R901147122

210 mm

105,5 mm

194 mm

2″ S

1 1/4″ H

PGH5-3X/080RE11VE4

R901147123

218 mm

109,5 mm

202 mm

2″ S

1 1/4″ H

PGH5-3X/100RE11VE4

R901147124

227 mm

114 mm

211 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/125RE11VE4

R901147125

239 mm

120 mm

223 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/160RE11VE4

R901147126

257 mm

129 mm

241 mm

3″ S

2″ H

PGH5-3X/200RE07VE4

R901147127

275 mm

138 mm

259 mm

3 1/2″ S

2″ S

PGH5-3X/250RE07VE4

R901147128

299 mm

150 mm

283 mm

3 1/2″ S

2 1/2″ S

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2) With multiple pumps, the combination part will start from here

PGH5-3X/...RR...VU2

PGH5-3X/...LR...VU2

Drive shaft geared, SAE 2-hole mounting flange

(central and back pump for pump combinations)

Type

NG

Part number

L1

L2

L3

S 1)

P 1)

“R” clockwise rotation

PGH5-3X/063RE11VE4

R901147122

210 mm

105,5 mm

194 mm

2″ S

1 1/4″ H

PGH5-3X/080RE11VE4

R901147123

218 mm

109,5 mm

202 mm

2″ S

1 1/4″ H

PGH5-3X/100RE11VE4

R901147124

227 mm

114 mm

211 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/125RE11VE4

R901147125

239 mm

120 mm

223 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/160RE11VE4

R901147126

257 mm

129 mm

241 mm

3″ S

2″ H

PGH5-3X/200RE07VE4

R901147127

275 mm

138 mm

259 mm

3 1/2″ S

2″ S

PGH5-3X/250RE07VE4

R901147128

299 mm

150 mm

283 mm

3 1/2″ S

2 1/2″ S

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Ports

Suction port "S"

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Pressure port "P"

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

BG

NG

Porting pattern / suction port S

D1

D2

S1

S2

Porting pattern / pressure port P

D3

D4

P1

P2

4

020

1″ 344,7 bar

Ø25 mm

M10; 18

52,4 mm

26,2 mm

3/4″ 413,7 bar

Ø19 mm

M10; 18

50,8 mm

23,8 mm

025

1 1/4″ 275,8 bar

Ø32 mm

M10; 18

58,7 mm

30,2 mm

3/4″ 413,7 bar

Ø19 mm

M10; 18

50,8 mm

23,8 mm

032

1 1/2″ 206,8 bar

Ø38 mm

M12; 21

69,9 mm

35,7 mm

1″ 413,7 bar

Ø25,4 mm

M12; 23

57,2 mm

27,8 mm

040

1 1/2″ 206,8 bar

Ø38 mm

M12; 21

69,9 mm

35,7 mm

1″ 413,7 bar

Ø25,4 mm

M12; 23

57,2 mm

27,8 mm

050

2″ 206,8 bar

Ø51 mm

M12; 21

77,8 mm

42,9 mm

1″ 413,7 bar

Ø25,4 mm

M12; 23

57,2 mm

27,8 mm

5

063

2″ 206,8 bar

Ø51 mm

M12; 21

77,8 mm

42,9 mm

1 1/4″ 413,7 bar

Ø32 mm

M12; 21

66,6 mm

31,8 mm

080

2″ 206,8 bar

Ø51 mm

M12; 21

77,8 mm

42,9 mm

1 1/4″ 413,7 bar

Ø32 mm

M12; 21

66,6 mm

31,8 mm

100

2 1/2″ 172,3 bar

Ø64 mm

M12; 23

88,9 mm

50,8 mm

1 1/2″ 413,7 bar

Ø38 mm

M16; 30

79,3 mm

36,5 mm

125

2 1/2″ 172,3 bar

Ø64 mm

M12; 23

88,9 mm

50,8 mm

1 1/2″ 413,7 bar

Ø38 mm

M16; 30

79,3 mm

36,5 mm

160

3″ 137,9 bar

Ø76 mm

M16; 30

106,4 mm

61,9 mm

2″ 413,7 bar

Ø51 mm

M20; 35

96,8 mm

44,5 mm

200

3 1/2″ 34,5 bar

Ø89 mm

M16; 30

120,7 mm

69,9 mm

2″ 206,8 bar

Ø51 mm

M12; 23

77,8 mm

42,9 mm

250

3 1/2″ 34,5 bar

Ø89 mm

M16; 30

120,7 mm

69,9 mm

2 1/2″ 172,4 bar

Ø64 mm

M12; 23

88,9 mm

50,8 mm

Measuring port PGH4-3X/... and PGH5-3X/...

Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Transport thread PGH4-3X/...

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Transport thread PGH5-3X/...

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Pump combinations

The dimensional drawings show the front pump and the combination part.

Combination part PGH5-3X+GF3-3X/VV1-1X/VV2-1X/K02

Material no.: R901155282
Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH5-3X...

Size

PGH5-3X/..RE..U2
PGH5-3X/..RE..E4
L1

PGH5-3X/..RR..U2
L1

63

264 mm

273 mm

80

272 mm

281 mm

100

281 mm

290 mm

125

293 mm

302 mm

160

311 mm

320 mm

200

329 mm

338 mm

250

353 mm

362 mm

PGF3/PGP2

Size

L2

L3

20

144,5 mm

79,5 mm

22

146,5 mm

80,5 mm

25

150,5 mm

82,5 mm

32

159,5 mm

87 mm

40

169,5 mm

92 mm

PVV..UMB

Frame size

L2

L3 (P)

L4 (S)

1

156 mm

133 mm

63,5 mm

2

163 mm

38 mm

120,5 mm

The dimensional drawings show the front pump and the combination part.

Combination part PGH5-3X+GH2/3-2X/GF2-2X/AZPF-1X/K01

Material no. : R901155283
Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH5-3X...

Size

PGH5-3X/..RE..U2
PGH5-3X/..RE..E4
L1

PGH5-3X/..RR..U2
L1

63

241 mm

250 mm

80

249 mm

258 mm

100

258 mm

267 mm

125

270 mm

279 mm

160

288 mm

297 mm

200

306 mm

315 mm

250

330 mm

339 mm

PGF2/PGP2

Size

L2

L3

006

116 mm

65 mm

008

119,5 mm

167 mm

011

125 mm

69,5 mm

013

130 mm

72 mm

016

135 mm

74,5 mm

019

141 mm

77,5 mm

022

147 mm

80,5 mm

PGH2

Size

L2

L3

005

110 mm

54 mm

006

112,5 mm

55,5 mm

008

116 mm

57 mm

PGH3

Size

L2

L3

011

121,5 mm

60 mm

013

126,5 mm

62,5 mm

016

131,5 mm

65 mm

AZPF

Size

L2

L3

004

85 mm

40 mm

005

87,5 mm

41 mm

008

91,5 mm

43 mm

011

96,5 mm

47 mm

014

101,5 mm

47,5 mm

016

105 mm

47,5 mm

019

110 mm

47,5 mm

022

115,5 mm

55 mm

The dimensional drawings show the front pump and the combination part.

Combination part PGH5-3X+GH4-3X..R

Material no.: R901155284
Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH5-3X..

Size

PGH5-3X/..RE..U2
PGH5-3X/..RE..E4
L1

PGH5-3X/..RR..U2
L1

63

264 mm

273 mm

80

272 mm

281 mm

100

281 mm

290 mm

125

293 mm

302 mm

160

311 mm

320 mm

200

329 mm

338 mm

250

353 mm

362 mm

PGH4-3X…R..U2

Size

L2

L3

20

145 mm

70,5 mm

25

150 mm

73 mm

32

157 mm

76,5 mm

40

164 mm

80 mm

50

174 mm

85 mm

The dimensional drawings show the front pump and the combination part.

Combination part PGH5-3X+GH5-3X..R

Material no.: R901155285
Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH5-3X..

Size

PGH5-3X/..RE..U2
PGH5-3X/..RE..E4
L1

PGH5-3X/..RR..U2
L1

63

264 mm

273 mm

80

272 mm

281 mm

100

281 mm

290 mm

125

293 mm

302 mm

160

311 mm

320 mm

200

329 mm

338 mm

250

353 mm

362 mm

PGH5-3X…R..U2

Size

L2

L3

63

219 mm

114,5 mm

80

227 mm

118,5 mm

100

236 mm

123 mm

125

248 mm

129 mm

160

266 mm

138 mm

200

284 mm

147 mm

250

308 mm

159 mm

The dimensional drawings show the front pump and the combination part.

Combination part: PGH5-3X+VV4/5-1X..J

Material no.: R901155286
Dimensions in mm

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

PGH5-3X..

Size

PGH5-3X/..RE..U2
PGH5-3X/..RE..E4
L1

PGH5-3X/..RR..U2
L1

63

264 mm

273 mm

80

272 mm

281 mm

100

281 mm

290 mm

125

293 mm

302 mm

160

311 mm

320 mm

200

329 mm

338 mm

250

353 mm

362 mm

Type

NG

Part number

L1

L2

L3

S 1)

P 1)

“R” clockwise rotation

“L” counterclockwise rotation

PGH5-3X/063..R11VU2

R901147129

upon request

219 mm

114,5 mm

203 mm

2″ S

1 1/4″ H

PGH5-3X/080..R11VU2

R901147130

upon request

227 mm

118,5 mm

211 mm

2″ S

1 1/4″ H

PGH5-3X/100..R11VU2

R901147131

upon request

236 mm

123 mm

220 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/125..R11VU2

R901147132

upon request

248 mm

129 mm

232 mm

2 1/2″ S

1 1/2″ H

PGH5-3X/160..R11VU2

R901147133

upon request

266 mm

138 mm

250 mm

3″ S

2″ H

PGH5-3X/200..R07VU2

R901147134

upon request

284 mm

147 mm

268 mm

3 1/2″ S

2″ S

PGH5-3X/250..R07VU2

R901147135

upon request

308 mm

159 mm

292 mm

3 1/2″ S

2 1/2″ S

1) S = standard pressure series,
H = high-pressure series;
for the exact dimensions see table Connections

1. General information

This project planning information refers to the specific properties of the Rexroth PGH.-3X internal gear 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 internal gear pumps are intended for the set-up of hydraulic drive systems in mechanical engineering and plant construction. During project planning, the basic principles of the EU Machinery Directive or comparable national regulations outside the EU have to be observed.

They must not be used in potentially explosive environments in accordance with directive 94/9/EC (ATEX).

 

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 Bleeding option for commissioning

For Rexroth internal gear pumps PGM.-3X, a manual, switchable or automatic bleeding option for the initial commissioning or any re-commissioning after maintenance and repair works is to be provided. As bleeding point, you can use the measuring port (M) located at the pump. Otherwise, the bleeding point has to be put into the pressure line in front of the first valve or check valve. Bleeding may only be effected with a maximum counter pressure of 0.2 bar.

Examples of bleedings circuits:

1. Automatic bleeding via self-acting bleed valve

2. Switchable bleeding

3. Manually operated bleeding

Automatic bleeding via self-acting bleed valve

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Switchable bleeding

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Manually operated bleeding

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2.2 Suction line

The line cross-sections have to 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 inlet operating pressure is complied with (0.8 to 2 bar absolute)! Bends and the combination of the suction pipes of several pumps are to be avoided. If suction filters have to be used, it has to be ensured on the system side that the lowest admissible inlet operating pressure is not exceeded even when the filter is contaminated.

Please ensure air tightness of the transitions and dimensional stability of the suction tube as regards 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 operating medium 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-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

2.3 Pressure line

For pressure lines, make sure that sufficient bursting protection of the pipes, hoses and connection elements is provided. The cross-sections should be based on the maximum flow in order to avoid additional excessive load of the pump due to back pressure. Here, you must also consider the pipe losses over the entire pressure line length and other line resistances (e.g. bends, pressure filters).

 

2.4 Pressure limitation

The PGH internal gear 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.

The pressure relief valves necessary for that purpose are to be designed considering the maximum flow and the existing pressure increase speed so that the admissible intermittent operating pressure is not exceeded.

 

2.5 Pressure holding function

In the variable-speed drive, the pump can temporarily also be operated below the specified minimum speed, in the pressure holding function. The holding time and the speed necessary for that purpose results dependent on the operating viscosity and the pressure level. For the design, please contact Bosch Rexroth's technical sales department.

In the deactivated state (speed = 0), a leakage flow flows through the pump back into the tank, dependent on the load pressure. Use a check valve to prevent this.

When using a check valve, please observe the information on bleeding in chapter 2.1.

 

3. Mechanical project planning

 

3.1 Disassembly and installation option

For disassembling and mounting the pump on the drive, provide guaranteed access on the system side by means of suitable lifting gear. Please consider particularly the net mass of frame size PGH5 (see "Technical data”).

Provide screws of property class 8.8 or 10.9 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 must be specified by the manufacturer in the power unit, machine or system project planning.

 

3.3 Tank

In the tank construction or the selection of suitable standard tanks, the following requirements are to be observed: Selection of the largest tank volume possible, dependent on the permanent or average flow, in order to allow for the separation of air bubbles by means of sufficient duration time of the medium in the tank. The air release capacity of the fluid used is also of importance. Provision of settling zones for the fluid in the tank in order to allow for air release. Provision of guiding plates in order to allowing for the deposit of contamination at the tank bottom outside the pump suction area. Large dimensioning of the tank surfaces dependent on the heat output to be dissipated via the tank walls.

 

3.4 Required power unit functions

Hydraulic power units should at least be equipped with the following features: Tanks, where internal pressure corresponds to the ambient pressure in accordance with the design, must be equipped with breathing filters for pressure compensation purposes. For fluid filling, only use 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, select tank fittings for pipes, lines, or hoses, which ensure safe sealing against external pressurization with water jet.

 

3.5 Place of installation and environmental conditions

With places of installation from a geodetic height of more than 1000 m, the pump is to be arranged in or below the tank or the tank is to be pre-tensioned by means of compressed air in order to comply with the admissible minimum inlet pressure. A short suction line with large cross-section has to be selected, bends should not to be used.

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.

When operating the pump in salt-containing or corrosive environments or when pressure loading with strongly abrasive substances is possible, make sure on the system side that the shaft seal ring and the sealing area of the shaft do not make direct contact with the environment.

3.6 Installation positions

B3

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

B5

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

V1

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

V2

technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

Attention!

Installation position motor at bottom and pump at top (e.g. IM V2) is not admissible!

4. Pump combinations

For pump combinations, make sure that the admissible operating data for the relevant pump type are complied with in every stage. The combined pumps must all have the same direction of rotation. The pump with the highest torque, variable displacement pumps or pumps with intermittent load should be provided as first stage in the pump combination. The maximum through-drive torque must be checked by the project planner for every application. This is also true for already existing (coded) pump combinations. The drive torque of a pump stage is calculated as follows: technical illustration-PGH4-3X/040RE11VE4-Gear pumps: PGH4.-3x/

T : Torque in Nm

Δp : Operating pressure in bar

V : Displacement in cm3

η : hydraulic, mechanical efficiency

 

maximum admissible torques in Nm:

 

Type

Input torque

Input torque

cylindrical shaft ..E

geared shaft ..R

PGH4

450

450

280

PGH5

1100

1400

700

The total of the torques in a pump combination must not exceed the maximum drive torque. Joint aspiration is not possible. For reasons of stability, we recommend using the ISO 4-hole mounting flange according to VDMA “E4” for combinations consisting of three or more pumps. Before operating pump combinations with different media, please consult Bosch Rexroth. Medium and back pumps must be equipped with shaft design “R” (geared).

5. 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 filling level of the operating medium

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

Vibrations Noise Temperature difference pump – fluid in the tank Foam formation in the tank Leak-tightness

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.

 

6. Accessories

 

6.1 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).

 

6.2 Pump safety block

For limiting the operating pressure and for the pump circulation at zero pressure, we recommend our pump safety blocks type DBA… according to RE 25890.

Automatic bleeding during commissioning is, however, not possible via DBA blocks. In this connection, we recommend a separate manual or automatic bleeding, e.g. via the pump's measuring port (see Hydraulic project planning)!

 

6.3 Other accessories

To install the Rexroth PGH.-3X internal gear pump on electric motors, we recommend selecting the pump carriers according to AB 41-20 and torsionally flexible couplings according to AB 33-22.