PGH4-3X/025RR11VU2-A516

Manufacturer: Bosch Rexroth

Material #: R901423299

Model : PGH4-3X/025RR11VU2-A516

***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 PGH4-3X/025RR11VU2-A516 (R901423299) is a high-quality internal gear pump designed for demanding hydraulic applications. This pump is characterized by its gap-compensated design, providing constant displacement and ensuring efficient operation. The construction of the PGH4-3X/025RR11VU2-A516 includes a mounting flange, housing, cover with through-drive, pinion shaft, internal gear, plain bearings, axial washers, and stop pin. Its advanced radial compensation system comprises segments, segment support, and seal rolls that maintain high volumetric efficiency over the pump's lifespan. Featuring hydrodynamic and hydrostatic mountings for the pinion shaft and internal gear respectively, this pump ensures low-noise operation due to its involute-edged gear tooth system which minimizes flow and pressure pulsation. The axial compensation mechanism utilizes pressure fields to balance axial washers against the displacement area, achieving optimal sealing with minimal mechanical loss. The Bosch Rexroth PGH4-3X/025RR11VU2-A516 is particularly suitable for use in high-power drives that are subject to fatigue-resistant operations with numerous load cycles. Applications include plastics processing machines, automatable presses, casting machines, and other systems requiring accumulator charging operation. Its robust design allows it to handle a wide range of viscosities and speeds while maintaining high efficiency due to its sealing gap compensation. Additionally, this model can be combined with various pumps such as axial piston pumps and vane pumps and is compatible with HFC fluids. With its fixed displacement feature, this pump stands out for its reliability in providing consistent performance even under varying conditions. Its frame size X corresponds to a maximum operating pressure specified in bar and a maximum displacement measured in cubic centimeters (cm³), ensuring compatibility across different system requirements.

$3,530.00 USD

More are expected on May 19, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as May 19, 2025 when ordered in

This product is eligible for factory repair.

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Fixed displacement Low operating noise Low flow pulsation High efficiency also at low speed and viscosity due to sealing gap compensation Suitable for broad viscosity and speed ranges All frame sizes and sizes can be combined with each other Can be combined with axial piston pumps, internal gear pumps and vane pumps Suitable for operation with HFC fluid (seal design “W”) Use:
For fatigue-resistant drives with high power and high pressures with very large numbers of load cycles, e.g. plastics processing machines, automatable presses, casting machines and other applications with accumulator charging operation

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).

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.

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.

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
01	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
11	Counterclockwise rotation (upon request)	L
Shaft design of the 1st pump
12	Cylindrical	E
12	SAE involute gear	R
Seal material
13	FKM seals	V
13	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)
14	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
Operating temperature range	Special fluid	°C	-10 … +50
Ambient temperature range		°C	-20 … +60
Viscosity range		mm²/s 2)	10 … 300
Viscosity range		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
Drive speed				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
	Outlet	continuous	Special fluid 2)	pN	bar	220				175	220				145	115	90
	Outlet	intermittent	Standard liquid	pmax	bar	350				250	350				260	210	170
	Outlet	intermittent	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!

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

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

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)
Type	NG	“R” clockwise rotation	“L” counterclockwise rotation	L1	L2	L3	S 1)	P 1)
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

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)
Type	NG	“R” clockwise rotation	“L” counterclockwise rotation	L1	L2	L3	S 1)	P 1)
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

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)
Type	NG	“R” clockwise rotation	L1	L2	L3	S 1)	P 1)
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

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)
Type	NG	“R” clockwise rotation	L1	L2	L3	S 1)	P 1)
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

Ports

Suction port "S"

Pressure port "P"

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

Transport thread PGH4-3X/...

Transport thread PGH5-3X/...

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

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

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

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

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

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)
Type	NG	“R” clockwise rotation	“L” counterclockwise rotation	L1	L2	L3	S 1)	P 1)
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

Switchable bleeding

Manually operated bleeding

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

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

B5

V1

V2

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:

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
Type	cylindrical shaft ..E	geared shaft ..R	Input torque
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.

PGH4-3X/025RR11VU2-A516

Manufacturer: Bosch Rexroth

Material #: R901423299

Model : PGH4-3X/025RR11VU2-A516

More are expected on May 19, 2025

This product is eligible for factory repair.

Single pumps

Pump combinations

Frame size 4

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

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

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

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

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

Frame size 5

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

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

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

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

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

Ports

Suction port "S"

Pressure port "P"

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

Transport thread PGH4-3X/...

Transport thread PGH5-3X/...

Pump combinations

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

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

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

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

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

Automatic bleeding via self-acting bleed valve

Switchable bleeding

Manually operated bleeding

3.6 Installation positions

B3

B5

V1

V2

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