INTERNAL GEAR PUMP PGF2-2X/008RL20VM

Manufacturer: Bosch Rexroth

Material #: R900066908

Model : PGF2-2X/008RL20VM

***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 PGF2-2X/008RL20VM (R900066908) is an internal gear pump designed for industrial and mobile applications within open circuit systems. It is characterized by its high efficiency, low noise, and minimal pulsation due to its gap compensation feature. This pump can handle variable speed drives and is constructed with an aluminum housing for durability. The PGF2-2X/008RL20VM is engineered to withstand up to two million load cycles at maximum pressure, ensuring a long service life. The pump has a dihedral shaft type tailored for claw coupling and a size of 20 mm. It operates at speeds ranging from a minimum to a maximum that are optimized for its design. The productgroup ID signifies its classification within the range of Bosch Rexroth hydraulic pumps. It features a maximum flow rate, constant displacement type, and operates with clockwise rotation. Additionally, the pump allows for throughdrive capabilities and has an assembly hole fastening centering of 82 mm. This model uses FKM seals which are compatible with various hydraulic fluids including HL, HLP, HEES, and HEPR. Its robust construction includes plain bearings which contribute to the unit's high efficiency across broad viscosity and speed ranges as well as excellent suction characteristics. Designed with integration in mind, the PGF2-2X/008RL20VM can be combined with other pumps such as internal gear pumps PGH, vane pumps PV, and axial piston pumps. Optional integrated valve technology can be requested for the connection cover. With its superior operating pressure capacity, this pump is ideal for fatigue-resistant drives in mobile applications like lifting equipment as well as industrial applications such as machine tools where moderate performance and pressure range are required. The component series X ensures that this model meets specific operational standards while offering maximum displacement of cm^3/u at a frame size of 20 mm.

$1,164.00 USD

More are expected on September 24, 2024

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Status: This product is temporarily out of stock.

Qty: Delivered as early as September 24, 2024 when ordered in

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INTERNAL GEAR PUMP PGF2-2X/008RL20VM

INTERNAL GEAR PUMP, size 8, pressure 250 bar for industrial and mobile applications, open circuit

Suitable for variable-speed drives, low noise and low pulsation, high efficiency thanks to gap compensation, suitable for two million load cycles at maximum pressure

Unpacked Weight: 2.1 kg

Fixed displacement Low operating noise Low flow pulsation High efficiency also at low viscosity due to sealing gap compensation Long service life due to plain bearings and sealing gap compensation Suitable for broad viscosity and speed ranges Very good suction characteristic All frame sizes and sizes can be combined with each other Can be combined with internal gear pumps PGH, vane pumps PV7 and axial piston pumps Integrated valve technology in the connection cover possible upon request For drives in the minor and medium performance and pressure range in industrial applications, e.g. machine tools With high operating pressure for fatigue-resistant drives in mobile applications, for example lifting equipment, fans and spreaders

Set-up

Hydraulic pumps of type PGF are leakage gap-compensated internal gear pumps with constant displacement. They basically comprise of housing (1), bearing cover (1.1), end cover (1.2), internal gear (2), pinion shaft (3), plain bearings (4), axial washers (5) and stop pin (6), as well as the segment filler element (7) consisting of segment (7.1), segment support (7.2) and the seal rolls (7.3).

Suction and displacement procedure

The hydrodynamically supported pinion shaft (3) drives the internally geared internal gear (2) in the displayed direction of rotation. During the rotation, there is a volume increase over an angle of approx. 180° in the suction range. An underpressure results and fluid flows into the chambers. The sickle-shaped segment filler element (7) separates suction and pressure chamber. In the pressure chamber, the teeth of the pinion shaft (3) engage in the space between the teeth of the internal gear (2) again. The liquid is displaced via the pressure channel (P).

Axial compensation

The axial compensation force FA takes effect in the area of the pressure chamber and is generated with the pressure field (8) in the axial washers (5). So the axial longitudinal gaps between the rotating and the fixed parts are extraordinarily small and ensure perfect axial sealing of the pressure chamber.

Radial compensation

The radial compensation force FR acts on segment (7.1) and segment support (7.2). The area ratios and the position of the sheet seals (7.3) between the segment and segment support are designed so that an almost leakage gap-free sealing between internal gear (2), segment filler element (7) and pinion shaft (3) is achieved. Spring elements under the sheet seal (7.3) ensure sufficient contact pressure, also with very low pressures.

Hydrodynamic and hydrostatic mounting

The forces acting on the pinion shaft (3) are accepted by hydrodynamically lubricated radial plain bearings (4); the forces acting on the internal gear (2) by the hydrostatic bearing (9).

Gear tooth system

The gear tooth system is an involute tooth system. Its large meshing length results in little flow and pressure pulsation; these little pulsation rates considerably contribute to the low-noise running.

Materials used

Housings (1), bearing covers (1.1), end covers (1.2) and axial washers (5): Aluminum alloy internal gear (2), pinion shaft (3) and stop pin (6): steel plain bearing (4): Copper-tin with steel back segment (7.1) and segment support (7.2): brass alloy sheet seals (7.3): Plastic

Aluminum housing
Internal gear pump with constant displacement
For industrial and mobile applications in the open circuit
With FKM seals
Maximum operating pressure 250 bar
Frame size 1, 2, 3
Size 1.7 … 40

Data Sheet	Download Data Sheet
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Max. pressure	250
Shaft end	Dihedral for claw coupling 8 mm
Fastening	2-hole fastening centering 52 mm
Size	8.2
Speed min.	600
Productgroup ID	9,10,11,12,13,14
Shaft end	Dihedral for claw coupling 8 mm
Speed max.	3600
Mounting flange	2-hole fastening centering 52 mm
Max. flow	29.52
Displacement type	constant
Direction of rotation	clockwise rotation
Through-drive	with
Weight	2.1
Seals	FKM
Hydraulic fluid	HL,HLP,HEES,HEPR

01	02	03		04		05	06	07	09	10	11
PG	F		-		/				V		*

Type
01	Internal gear pump, fixed displacement, gap-compensated				PG
Series
02	Medium pressure pump, peak pressure 250 bar				F
Frame size BG
03	BG1				1
	BG2				2
	BG3				3
Series		BG1	BG2	BG3
04	Series 20 to 29 (20 to 29: unchanged installation and connection dimensions)	●	●	-	2X
	Series 30 to 39 (30 to 39: unchanged installation and connection dimensions)	-	-	●	3X
Size				NG
05	BG1			1.7	1,7
				2.2	2,2
				2.8	2,8
				3.2	3,2
				4.1	4,1
				5.0	5,0
	BG2			6.3	006
				8.0	008
				11.0	011
				13.0	013
				16.0	016
				19.0	019
				22.0	022
	BG3			20.0	020
				25.0	025
				32.0	032
				40.0	040
Direction of rotation
06	When looking at the drive shaft	right			R
		counterclockwise			L
Drive shaft
07	Parallel keyed shaft, ISO 3019-2				A
	Cylindrical shaft with fitting key, ISO 3019-2 with through-drive				E
	Splined shaft SAE J744 with involute tooth system according to ANSI B92.1a				J
	Dihedral for claw coupling				N
	Dihedral for claw coupling with through-drive				L
	Conical shaft 1:5 with through-drive 1)				O
Line connections
08	Pipe thread according to ISO 228-1				01
	Suction and pressure port according to SAE J518				07
	Square flange connection, metric mounting thread				20
Seal material
09	FKM (fluor-caoutchouc)				V
Mounting flange
10	Special flange according to ISO 7653-1985 (for ancillary truck output)				K4
	4-hole mounting flange according to ISO 3019-2 and VDMA 24560 part 1				E4
	2-hole mounting flange according to ISO 3019-1				U2
	2-hole mounting flange, centering diameter 32 mm (BG1), centering diameter 52 mm (BG2 and BG3)				M
	2-hole mounting flange, centering diameter 50 mm				P
	2-hole mounting flange, centering diameter 45.24 mm				P1
	2-hole mounting flange, centering diameter 63 mm				P2
Option
11	Anti-cavitation valve				N
	End cover for attachment of the next smaller frame size				K
12	Further details in the plain text				*

1)	With adapter for truck ancillary drive

Type	Material number
PGF22X/011RE01VE4	R900932271
Not all variants according to the type key are possible! Please select the desired pump using the selection tables from dimensions to “Conical shaft, with through-drive” or after consultation with Bosch Rexroth! Upon request, special options are possible, for example integrated pressure relief valves.

Multiple pumps

01	02		03		04		05		06		07	08	09	10		11		12	13
P3	GF2	/	022	+	GF2	/	011	+	GF1	/	2.8				+		+

Type
01	2-fold		P2
	3-fold		P3
02	Series of the 1st pump 1)
03	Size of the 1st pump 1)
04	Series of the 2nd pump 1)
05	Size of the 2nd pump 1)
06	Series of the 3rd pump 1)
07	Size of the 3rd pump 1)
Direction of rotation
08	When looking at the drive shaft	right	R
		counterclockwise	L
Drive shaft of the 1st pump
09	Cylindrical shaft with fitting key, ISO 3019-2 with through-drive		E
	Splined shaft SAE J744 with involute tooth system according to ANSI B92.1a		J
	Dihedral for claw coupling with through-drive		L
Line connections of the 1st pump
10	Pipe thread according to ISO 228-1		01
	Suction and pressure port according to SAE J518		07
	Square flange connection, metric mounting thread		20
Line connections of the 2nd pump
11	Pipe thread according to ISO 228-1		01
	Suction and pressure port according to SAE J518		07
	Square flange connection, metric mounting thread		20
Line connections of the 3rd pump
12	Pipe thread according to ISO 228-1		01
	Suction and pressure port according to SAE J518		07
	Square flange connection, metric mounting thread		20
Mounting flange of the 1st pump
13	Special flange according to ISO 7653-1985 (for ancillary truck output)		K4
	4-hole mounting flange according to ISO 3019-2 and VDMA 24560 part 1		E4
	2-hole mounting flange according to ISO 3019-1		U2
	2-hole mounting flange, centering diameter 32 mm (BG1), centering diameter 52 mm (BG2 and BG3)		M
	2-hole mounting flange, centering diameter 50 mm		P

1)	Detailed information see type key

Frame size						1						2							3
Size						1.7	2.2	2.8	3.2	4.1	5.0	6.3	8	11	13	16	19	22	20	25	32	40
Displacement	geometric			Vg	cm³	1.7	2.2	2.8	3.2	4.1	5	6.5	8.2	11	13.3	16	18.9	22	20.6	25.4	32.5	40.5
Drive speed				nmin	rpm	600													500
Drive speed				nmax	rpm	4500	3600	4000	3600									3000	3600	3200	3000	2500
Operating pressure, absolute	Inlet			p	bar	0.6 ... 3
	Outlet	continuous	Standard liquid	pN	bar	180	210				180	210						180	210			180
	Outlet	intermittent 1)	Standard liquid	pmax	bar	210	250				210	250						210	250			210
Flow 2)				qV	l/min	2.4	3.2	4.1	4.6	6	7.2	9.4	11.9	16	19.3	23.3	27.4	31.9	29.9	36.8	47.1	58.7
Power consumption	Minimum drive power required 3)			pzu	kW	0.75											1.1			1.5
Mass 4)				m	kg	0.8	0.9	1		1.1	1.3	2.1	2.2	2.4	2.6	2.7	2.9	3.1	3.3	4.1	4.5	4.9
Shaft load						Radial and axial forces (e.g. belt pulley) only after coordination
Mounting type						Flange mounting

1)	Maximum 6s, at most 15% of the duty cycle, maximum 2 x 106 load cycles
2)	at n = 1450 rpm, p = 10 bar, v = 30 mm2/s
3)	at p ≈ 1 bar
4)	For pumps with 2-hole mounting as flange version - Frame size 2 approx. 0.9 kg heavier - Frame size 3 approx. 1.0 kg heavier

Hydraulic fluid

Hydraulic fluid
Permissible hydraulic fluid 1)			Mineral oil (HL, HLP) according to DIN 51524-1 and DIN 51524-2 HEES liquids according to DIN ISO 15380 HEPR liquids according to DIN ISO 15380
Operating temperature range	Standard liquid	°C	-20 … -100
Ambient temperature range		°C	-20 … +60
Viscosity range		mm²/s	10 … 300
Admissible start viscosity		mm²/s	2000
Maximum admissible degree of contamination of the hydraulic fluid 2)			Class 20/18/15 according to ISO 4406 (c)
Admissible radial loads of the pinion shaft			Upon request

1)	Other hydraulic fluids on request
2)	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!

Notice

For applications outside these parameters, please consult us. Observe our provisions according to data sheet 90220.

For applications outside these parameters, please consult us!

Frame size 1

Flow

Efficiency

Drive power

Sound pressure level

Frame size 2

Flow

Efficiency

Drive power

Sound pressure level

Frame size 3

Flow

Efficiency

Drive power

Sound pressure level

Notice

Characteristic curves measured with n = 1450 min-1; ν = 40 mm2/s; θ = 40 °C Sound pressure level measured in the sound measuring chamber according to DIN 45635, sheet 26: Distance: Microphone ‒ pump = 1 m

Frame size 1

Cylindrical shaft with fitting key DIN 6885, without through-drive

Dimensions in mm

Type					Material numbers	a	b	c	Øe	Øf	Suction port S according to ISO 228-1	Pressure port P according to ISO 228-1
PGF1-2X/	1,7	R	A	01VP1	R9000932132	29,6 mm	49,1 mm	61,1 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	2,2	R	A	01VP1	R9000932133	29,6 mm	49,1 mm	61,1 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	2,8	R	A	01VP1	R9000932134	30,7 mm	51,4 mm	63,4 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
	3,2	R	A	01VP1	R9000932135	31,5 mm	53 mm	65 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
	4,1	R	A	01VP1	R9000932136	33,4 mm	56,7 mm	68,7 mm	26 mm	26 mm	G3/8; 14 mm deep	G3/8; 12.5 mm deep
	5,0	R	A	01VP1	R9000932137	35,2 mm	60,4 mm	72,4 mm	27 mm	26 mm	G1/2; 14 mm deep	G3/8; 12.5 mm deep

Cylindrical shaft with fitting key DIN 6885, with through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Øe	Øf	Suction port S according to ISO 228-1	Pressure port P according to ISO 228-1
PGF1-2X/	1,7	R	E	01VU2	R900086159	48,6 mm	85,7 mm	79,7 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	2,2	R	E	01VU2	R900086160	48,6 mm	85,7 mm	79,7 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	2,8	R	E	01VU2	R900086161	49,7 mm	88 mm	82 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
	3,2	R	E	01VU2	R900086162	50,5 mm	89,6 mm	83,6 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
	4,1	R	E	01VU2	R900086163	52,4 mm	93,3 mm	87,3 mm	26 mm	26 mm	G3/8; 14 mm deep	G3/8; 12.5 mm deep
	5,0	R	E	01VU2	R900086164	54,2 mm	97 mm	91 mm	27 mm	26 mm	G1/2; 14 mm deep	G3/8; 14 mm deep

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Type					Material numbers	a	c	d	Øe	Øf	Suction port S according to ISO 228-1	Pressure port P according to ISO 228-1
PGF1-2X/	1,7	L	N	01VM	R900086147	29,6 mm	49,1 mm	61,1 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	2,2	L	N	01VM	R900086148	29,6 mm	49,1 mm	61,1 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
	3,2	L	N	01VM	R900086150	31,5 mm	53 mm	65 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
	4,1	L	N	01VM	R900932131	33,4 mm	56,7 mm	68,7 mm	26 mm	26 mm	G3/8; 14 mm deep	G3/8; 12.5 mm deep

Driver

Dimensions in mm

The driver (material number R900984336) is included in the scope of delivery.

Shaft for claw coupling, with through-drive, central or back pump

Dimensions in mm

Type					Material numbers	a	b	c	d	Øe	Øf	Suction port S according to ISO 228-1	Pressure port P according to ISO 228-1
PGF1-2X/	1,7	R	L	01VM	R900086165	29,6 mm	49,1 mm	66,7 mm	60,7 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
		L			R900932093
	2,2	R	L	01VM	R900086166	29,6 mm	49,1 mm	66,7 mm	60,7 mm	23 mm	23 mm	G1/4; 14 mm deep	G1/4; 12.5 mm deep
		L			R900932094
	2,8	R	L	01VM	R900932138	30,7 mm	51,4 mm	69 mm	63 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
		L			R900951293
	3,2	R	L	01VM	R900086168	31,5 mm	53 mm	70,6 mm	64,6 mm	26 mm	23 mm	G3/8; 14 mm deep	G1/4; 12.5 mm deep
		L			R900951294
	4,1	R	L	01VM	R900086169	33,4 mm	56,7 mm	74,3 mm	68,3 mm	26 mm	26 mm	G3/8; 14 mm deep	G3/8; 12.5 mm deep
		L			R900088913
	5,0	R	L	01VM	R900086170	35,2 mm	60,4 mm	78 mm	72 mm	27 mm	26 mm	G1/2; 14 mm deep	G3/8; 12.5 mm deep
		L			R900951295

Driver

Dimensions in mm

The driver (material number R900984336) is included in the scope of delivery.

Frame size 2

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Type					Material numbers	a	b	c	Port standard	Port optional
PGF2-2X/	006	L	N	01VM	R900563948	46 mm	76 mm	87,2 mm	01	20
	008	L	N	01VM	R900062364	47,8 mm	79,5 mm	90,7 mm	01	20
	011	L	N	01VM	R900077364	50,5 mm	85 mm	96,2 mm	01	20
	013	L	N	20VM	R900034010	53 mm	90 mm	101,2 mm	20	01
	016	L	N	20VM	R900033354	55,5 mm	95 mm	106,2 mm	20	01
	019	L	N	20VM	R900932120	58,5 mm	101 mm	112,2 mm	20	01
	022	L	N	20VM	R900081192	61,5 mm	107 mm	118,2 mm	20	-

Port 01, pipe thread according to ISO 228-1
NG	Suction port S	Pressure port P
006, 008, 011, 013	G3/4; 16 deep	G1/2; 14 mm deep
016, 019	G1; 18 mm deep	G1/2; 14 mm deep

Driver

Dimensions in mm

The driver (material number R900981428) is included in the scope of delivery.

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	g	h	Pitch circle	G	t	M
006, 008, 011, 013, 016	20 mm	28,3±0.2 mm	40 mm	M6	10 mm	10 Nm
019, 022	26 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Type					Material numbers	a	b	c	d	Port standard	Port optional
PGF2-2X/	006	R	L	01VM	R900567307	46 mm	76 mm	98,2 mm	87,1 mm	01	20
		L			R900066012
	008	R	L	01VM	R900563291	47,8 mm	79,5 mm	101,7 mm	90,6 mm	01	20
		L			R900070239
	011	R	L	01VM	R900561146	50,5 mm	85 mm	107,2 mm	96,1 mm	01	20
		L			R900073232
	013	R	L	20VM	R900049570	53 mm	90 mm	112,2 mm	101,1 mm	20	01
		L			R900058674
	016	R	L	20VM	R900064718	55,5 mm	95 mm	117,2 mm	106,1 mm	20	01
		L			R900983463
	019	R	L	20VM	R900932243	58,5 mm	101 mm	123,2 mm	112,1 mm	20	01
		L			R900983464
	022	R	L	20VM	R900932186	61,5 mm	107 mm	129,2 mm	118,1 mm	20	-
		L			R900983933

Port 01, pipe thread according to ISO 228-1
NG	Suction port S	Pressure port P
006, 008, 011, 013	G3/4; 16 deep	G1/2; 14 mm deep
016, 019	G1; 18 mm deep	G1/2; 14 mm deep

Driver

Dimensions in mm

The driver (material number R900981428) is included in the scope of delivery.

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	g	h	Pitch circle	G	t	M
006, 008, 011, 013, 016	20 mm	28,3±0.2 mm	40 mm	M6	10 mm	10 Nm
019, 022	26 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Type					Material numbers	a	b	c	Port standard	Port optional
PGF2-2X/	006	R	A	01VP2	R900932272	46 mm	76 mm	87,1 mm	01	20
	008	R	A	01VP2	R900564037	47,8 mm	79,5 mm	90,7 mm	01	20
	011	R	A	01VP2	R900568523	50,5 mm	85 mm	96,2 mm	01	20
	013	R	A	20VP2	R900032712	53 mm	90 mm	101,2 mm	20	01
	016	R	A	20VP2	R900032275	55,5 mm	95 mm	106,2 mm	20	01
	019	R	A	20VP2	R900571401	58,5 mm	101 mm	112,2 mm	20	01

Port 01, pipe thread according to ISO 228-1
NG	Suction port S	Pressure port P
006, 008, 011, 013	G3/4; 16 deep	G1/2; 14 mm deep
016, 019	G1; 18 mm deep	G1/2; 14 mm deep

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	g	h	Pitch circle	G	t	M
006, 008, 011, 013, 016	20 mm	28,3±0.2 mm	40 mm	M6	10 mm	10 Nm
019, 022	26 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Cylindrical shaft with fitting key DIN 6885, without through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Port standard	Port optional
PGF2-2X/	006	R	E	01VE4	R900932265	63 mm	115,2 mm	104,1 mm	01	20
	008	R	E	01VE4	R900932266	64,8 mm	118,7 mm	107,6 mm	01	20
	011	R	E	01VE4	R900932271	67,5 mm	124,2 mm	113,1 mm	01	20
	013	R	E	20VE4	R900943181	70 mm	129,2 mm	118,1 mm	20	01
	016	R	E	20VE4	R900932193	72,5 mm	134,2 mm	123,1 mm	20	01
	019	R	E	20VE4	R900943182	75,5 mm	140,2 mm	129,1 mm	20	01
	022	R	E	20VE4	R900932126	78,5 mm	146,2 mm	135,1 mm	20	-

Port 01, pipe thread according to ISO 228-1
NG	Suction port S	Pressure port P
006, 008, 011, 013	G3/4; 16 deep	G1/2; 14 mm deep
016, 019	G1; 18 mm deep	G1/2; 14 mm deep

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	g	h	Pitch circle	G	t	M
006, 008, 011, 013, 016	20 mm	28,3±0.2 mm	40 mm	M6	10 mm	10 Nm
019, 022	26 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Splined shaft, with through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Port standard	Port optional
PGF2-2X/	006	R	J	01VU2	R900932265	65 mm	117,2 mm	106,1 mm	01	20
		L			R900247697
	008	R	J	01VU2	R900932266	66,8 mm	120,7 mm	109,6 mm	01	20
		L			R900247698
	011	R	J	01VU2	R900932271	69,5 mm	126,2 mm	115,1 mm	01	20
		L			R900247699
	013	R	J	20VU2	R900943181	72 mm	131,2 mm	120,1 mm	20	01
		L			R900969259
	016	R	J	20VU2	R900932193	74,5 mm	136,2 mm	125,1 mm	20	01
		L			R900936173
	019	R	J	20VU2	R900943182	77,5 mm	142,2 mm	131,1 mm	20	01
		L			R900984300
	022	R	J	20VU2	R900932126	80,5 mm	148,2 mm	137,1 mm	20	-
		L			R900935718

Port 01, pipe thread according to ISO 228-1
NG	Suction port S	Pressure port P
006, 008, 011, 013	G3/4; 16 deep	G1/2; 14 mm deep
016, 019	G1; 18 mm deep	G1/2; 14 mm deep

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	g	h	Pitch circle	G	t	M
006, 008, 011, 013, 016	20 mm	28,3±0.2 mm	40 mm	M6	10 mm	10 Nm
019, 022	26 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Frame size 3

Splined shaft, with through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Port standard	Port optional
PGF3-3X/	020	R	J	07VU2	R900983792	79,5 mm	145,6 mm	134,5 mm	07	20
		L			R900948466
	025	R	J	07VU2	R900029617	82,5 mm	151,6 mm	140,5 mm	07	20
		L			R900950057
	032	R	J	07VU2	R900029561	87 mm	160,6 mm	149,5 mm	07	20
		L			R900984213
	040	R	J	07VU2	R900931426	92 mm	170,6 mm	159,5 mm	07	-
		L			R900969266

Port 07, suction and pressure port according to SAE J518

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	k	Suction port S	Pressure port P
020, 025	16 mm	1 1/4 in	3/4 in
032, 040	20 mm	1 1/4 in	3/4 in

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	n	o	Pitch circle	G	t	M
020, 025	12 mm	24,8±0.2 mm	35 mm	M6	10 mm	10 Nm
032	20 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Cylindrical shaft with fitting key DIN 6885, without through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Port standard	Port optional
PGF3-3X/	020	R	E	07VE4	R900063299	71 mm	137,1 mm	126 mm	07	20
	025	R	E	07VE4	R900932088	74 mm	143,1 mm	132 mm	07	20
	032	R	E	07VE4	R900932112	75,5 mm	152,1 mm	141 mm	07	20
	040	R	E	07VE4	R900932111	83,5 mm	162,1 mm	151 mm	07	-

Port 07, suction and pressure port according to SAE J518

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	k	Suction port S	Pressure port P
020, 025	16 mm	1 1/4 in	3/4 in
032, 040	20 mm	1 1/4 in	3/4 in

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	n	o	Pitch circle	G	t	M
020, 025	12 mm	24,8±0.2 mm	35 mm	M6	10 mm	10 Nm
032	20 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Shaft for claw coupling, without through-drive, back pump

Dimensions in mm

Type					Material numbers	a	b	c	d	Port standard	Port optional
PGF3-3X/	020	R	L	07VM	R900073539	60,5 mm	99,5 mm	126,6 mm	115,5 mm	07	20
		L			R900758721
	025	R	L	07VM	R900932121	63,5 mm	105,5 mm	132,6 mm	121,5 mm	07	20
		L			R900960119
	032	R	L	07VM	R900074369	68 mm	114,5 mm	141,6 mm	130,5 mm	07	20
		L			R900034370
	040	R	L	07VM	R900083281	73 mm	124,5 mm	151,6 mm	140,5 mm	07	-
		L			R900058224

Port 07, suction and pressure port according to SAE J518

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	k	Suction port S	Pressure port P
020, 025	16 mm	1 1/4 in	3/4 in
032, 040	20 mm	1 1/4 in	3/4 in

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	n	o	Pitch circle	G	t	M
020, 025	12 mm	24,8±0.2 mm	35 mm	M6	10 mm	10 Nm
032	20 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Driver

Dimensions in mm

The driver (material number R900983603) is included in the scope of delivery.

Conical shaft, with through-drive

Dimensions in mm

Type					Material numbers	a	c	d	Port standard	Port optional
PGF3-3X/	020	R	O	07VK4	R900969302	71 mm	137,1 mm	126 mm	07	20
		L			R900619706
	025	R	O	07VK4	R900943169	74 mm	143,1 mm	132 mm	07	20
		L			R900619710
	032	R	O	07VK4	R900943168	78,5 mm	152,1 mm	141 mm	07	20
		L			R900943167

Port 07, suction and pressure port according to SAE J518

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	k	Suction port S	Pressure port P
020, 025	16 mm	1 1/4 in	3/4 in
032, 040	20 mm	1 1/4 in	3/4 in

Port 20, square flange connection

Suction port S

Dimensions in mm

Pressure port P

Dimensions in mm

NG	n	o	Pitch circle	G	t	M
020, 025	12 mm	24,8±0.2 mm	35 mm	M6	10 mm	10 Nm
032	20 mm	38,9±0,3 mm	55 mm	M8	12 mm	25 Nm

Intended use

Internal gear pumps are intended for the set-up of hydraulic drive systems in machine and plant construction.

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. 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. 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.

Hydraulic project planning

Bleeding option for commissioning

For Rexroth internal gear pumps PGF.-2/3X, a manual or switchable bleeding option for the initial commissioning or any re-commissioning after maintenance and repair works is to be provided. 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.

Switchable bleeding

Manually operated bleeding

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. Bends and the combination of the suction pipes of several pumps are to be avoided. If a suction filter has 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 (at least 100 mm with lowest liquid level). 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. Return flow and leakage fluid must not be sucked in immediately again.

Dimensions in mm

Pressure line

With pressure lines, sufficient bursting protection of the pipes, hoses and connection elements has to be ensured. 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).

Pressure limitation

The PGF 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.

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. If this is to be prevented, a check valve has to be used.

When using a check valve, please observe the information on bleeding options for the commissioning.

Mechanical project planning

Fastening

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.

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 continuous 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 hydraulic fluid used is also of importance. Provision of settling zones for the hydraulic 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.

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 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.

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 be used.

When installing the pump more than 10 m below the tank, the reduction of the inlet pressure to the maximum admissible value has to 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, 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.

Drive

Electric motor + pump carrier + coupling + pump

No radial and axial forces on the pump drive shaft admissible! Motor and pump must be exactly aligned! Always use a coupling that is suitable for compensating shaft displacements!

B3

B5

V1

Pump combinations

With pump combinations it has to be ensured that on every stage, the admissible operating data for the relevant pump type are complied with. 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 total of the torques in a pump combination must not exceed the maximum drive torque.

Maximum drive torques [Nm]
Shaft	N	L	A	E	J	O
PGF1	14	14	30	30	-	-
PGF2	70	70	95	140	90	-
PGF3	140	140	-	230	230	260

Formula for drive torque
	[Nm]
Legende
T	Drive torque [Nm]
Δp	Operating pressure [bar]
V	Displacement [cm³]
η	Hydraulic-mechanical efficiency

Maximum through-drive torques [Nm]
Shaft	L	E	J
PGF1	14	14	-
PGF2	70	70	70
PGF3	140	140	140

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. PGF combinations are mounted without combination part and are not sealed towards each other.

Selection

The shaft design of the front pump must be E, J or L. The shaft design of the medium pump must be L. The shaft design of the back pump must be N. If a pump of the next smaller frame size is to be attached, the first pump must have the designation K at the end (e.g. PGF3 + PGF2 ⇒ front pump: PGF3-3X/032RJ07VU2K)

Dimensions

The dimensions of the connections correspond to those of single pumps (see Dimensions). The overall length of the pump combination results from the addition of the dimensions “d” of the single pumps (see Dimensions) With the combination of PGF2 and PGF1, the length of the assembly of PGF2 (dimension d) increases by 4.5 mm. With the combination of PGF3 and PGF2, the length of the assembly of PGF3 (dimension d) increases by 2 mm. With the combination of PGF3 and PGF1, the length of the assembly of PGF3 (dimension d) increases by 12.5 mm.

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.

Accessories

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 data sheet 25890.

Automatic bleeding during commissioning is, however, not possible via DBA blocks. In this connection, we recommend separate, manual bleeding.