R978050806 - BuyRexroth

Manufacturer: Bosch Rexroth

Material #: R978050806

Model : SYDFEE-2X/28+A CPL R978020607+R910986299

$10,290.00 USD

More are expected on October 2, 2026

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Qty	Price	Savings
5-24	$10,032.75 USD	$257.25 USD
25+	$9,775.50 USD	$514.50 USD

Status: This product is temporarily out of stock.

Qty: Delivered as early as October 2, 2026 when ordered in

This product is eligible for factory repair.

Repairs from $1,894.00

A SYDFEE-2X control system is used for the electro-hydraulic control of swivel angle, pressure and power (partially optional, see type key pilot control and preload valve and ordering code) of an axial piston variable displacement pump.
The control system consists of the following components: Axial piston variable displacement pump A10VSO.../31 VT-DFPE-.2X proportional valve as pilot valve with integrated electronics including inductive position transducer for valve position sensing. Position transducer for sensing the swivel angle Pressure transducer with suitable signal level and dynamics (optionally HM 20, otherwise separate order) Preload valve with integrated pressure relief function SYDZ (optional)

1	Swash plate
2	Pilot valve
3	Counter piston
4	Actuating piston
5	Spring
6	Inductive position transducer for valve position
7	Swivel angle position sensor
8	Proportional solenoid
11	Integral electronics
12	Connector X1
13	Connector X2 for connection of the HM 20 pressure transducer cable version (only with actual pressure value input F)
14	Mating connector X3 for connection of the CAN bus (only available with SYDFEC/SYDFEn)
15	Drive shaft
16	Connection flange
17	Subplate, optionally with through-drive

01		02	03		04	05	06	07	08		09		10	11	12	13	14	15	16		17
SYDFEE-2X	/			–	P			12		–		–								–	*

Pump of the SYDFE control system
Series
01	Control system with internal analog electronics								SYDFEE-2X
01	Pump combinations (see order example)								SY2DFE.-2X, SY3DFE.-2X
Size			018	028	045	071	100	140
02	Displacement cm³		18	28	45	71	100	140
Direction of rotation looking at the drive shaft
03	Right		●	●	●	●	●	●	R
03	Left		●	●	●	●	●	●	L
Hydraulic fluid
04	Mineral oil according to DIN 51524 (HL/HLP)		●	●	●	●	●	●	P
Drive shaft variant
05	Cylindrical with fitting key DIN 6885 (not in connection with through-drive)		Ø18	Ø22	Ø25	Ø32	Ø40	Ø45	P
	Splined shaft profile SAE J 744 1)		3/4"	–	–	–	1 1/2"	1 3/4"	S
	Splined shaft profile SAE J 744 (higher torque)		–	7/8"	1"	1 1/4"	–	–	R
Connection flange (centering in mm)			Ø18	Ø22	Ø25	Ø32	Ø40	Ø45
06	ISO 2-hole		80	100	100	125	125	–	A
	ISO 4-hole		–	–	–	–	–	180	B
	SAE 2-hole		82,55	101,6	101,6	127	127	–	C
	SAE 4-hole		–	–	–	–	–	152,4	D
Port for working lines pressure port B and suction port S
07	SAE, laterally opposite, mounting thread metric		●	●	●	●	●	●	12
Through-drive (All through-drives with single pumps come without a hub and are operationally safe, provided with an end cover)
08	Without through-drive		●	●	●	●	●	●	N00
	Centering	Attachment pump (examples) 2)
	ISO Ø100 mm	A10VSO..31 NG28/45	–	●	●	●	●	●	KD3
	ISO Ø125 mm	A10VSO..31 NG71/100	–	–	–	●	●	●	KD5
	ISO Ø180 mm	A10VSO..31 NG140	–	–	–	–	–	●	KD7
	SAE Ø82.55 mm	A10VSO..31 NG18, PGF2, PGH2, PGH3, AZPF	●	●	●	●	●	●	KC1
	SAE Ø101.6 mm	PGH4, 1PF2G3, PGF3	–	●	●	●	●	●	KC3
	SAE Ø127 mm	PGH5	–	–	–	●	●	●	KC5
	SAE Ø152.4 mm	A10VO140	–	–	–	–	–	●	KC6
Base pump variant
09	Standard (internal pilot oil)	●	●	●	●	●	●	●	0000
	External supply	–	●	●	●	●	●	–	0479
	External supply + regenerative operation	–	–	–	–	●	●	●	0487
Pilot and preload valve of the SYDFEE control system
Spool design
10	Standard (NG28 ... NG140)								A
10	4-groove spool (NG18)								C
Integrated electronics, installation orientation, see note on feature 11
11	Radially to the pump axis								0
11	folded 90° in the direction of the subplate								2
Control, additional function					A	B	C	D
12	Switchable pressure controller (high signal)				●				A
	Power limitation adjustable at the OBE valve					●			B
	Power limitation adjustable via analog input						●		C
	Pressure controller that can be switched off (high signal)							●	D
Electronics assembly, option
13	Standard electronics with leakage oil compensation				●	●	●	●	0
13	Standard electronics without leakage oil compensation				●	●	●	●	1
Actual pressure value input (For the description of the connectors refer to electrical connection)				Plug-in connector	C 4...20 mA	V 0...10 V	E 1...10 V	F 0,5...5 V
14	Current input 4...20 mA			X1	●				C
	Voltage input 0...10 V			X1		●			V
	Voltage input 1...10 V			X1			●		E
	Voltage input 0.5...5 V			X2				●	F
Pressure transducer
15	HM 20-2X/315-F-C13-0,5, measurement range 315 bar (0.5...5 V) with connection cable 0.5 m for direct connection to X2 (only in connection with actual pressure value input F)				–	–	–	●	L
15	Without pressure transducer				●	●	●	●	X
Preload valve with integrated pressure limitation
16	Pressure limitation 200 bar (tolerance ± 8 bar)								1
	Pressure limitation 250 bar (tolerance ± 10 bar)								2
	Pressure limitation 300 bar (tolerance ± 12 bar)								3
	Without preload valve								X
17	Further details in the plain text e. g. SO variant								*

1)	ANSI B92.1a-1976, 30° pressure angle, flat root, side fit, tolerance class 5.
2)	Also observe the conditions for the attachment pumps.

Note on feature 11: Valve, installation orientation of the integrated electronics
Clockwise direction of rotation, installation orientation 0	Clockwise direction of rotation, installation orientation 2	Counterclockwise direction of rotation, installation orientation 0	Counterclockwise direction of rotation, installation orientation 2

●	available
-	not available

Ordering code pump combination SYHDFEE-2X

01		02		03		04		05
SY2HDFEE-2X	/		–		/		+

01	2-fold pump	SY2HDFEE-2X
02	Size of the main pump 1)
03	Size of the attachment pump or pump abbreviation if the attachment pump is not SYHDFE (e.g. PGF) 1)
04	Material number without "R9" for the main pump or type designation if material number is not known
05	Material number without "R9" for the attachment pump or type designation if material number is not known

1)	Detailed information see type key

01		02		03		04
SY3HDFEE-2X	/		+		+

01	3-fold pump	SY3HDFEE-2X
02	Material number without "R9" for the main pump or type designation if material number is not known
03	Material number without "R9" for the attachment pump or type designation if material number is not known
04	Material number without "R9" for the attachment pump or type designation if material number is not known

Example of name plate of a pump combination

For enquiries regarding the control system, material number, production order number, serial number, and date of production are necessary.

mechanic and hydraulic

Size				18	28	45	71	100	140
Displacement		Vg max	cm³	18	28	45	71	100	140
Speed 1)	maximum at Vg max	nnom	rpm	3300	3000	2600	2200	2000	1800
Speed 1)	maximum at Vg < Vg max	nmax zul	rpm	3900	3600	3100	2600	2400	2100
Minimum speed		nmin	rpm	50
Max. flow (displacement)	at nnom and Vg max	qV max	l/min	59.4	84	117	156	200	252
Max. flow (displacement)	with nE = 1500 rpm and Vg max	qvE max	l/min	27	42	68	107	150	210
Max. power (Δp = 280 bar)	at nnom and Vg max	P max	kW	27.7	39	55	73	93	118
Max. power (Δp = 280 bar)	with nE = 1500 rpm and Vg max	PE max	kW	12.6	20	32	50	70	98
Max. torque (Δp = 280 bar)		Tmax	Nm	80.1	125	200	316	445	623
Maximum permissible drive torque	Fitting key	Ttotal	Nm	88	137	200	439	857	1206
	Splined shaft S overall torque	Ttotal	Nm	124	-			1104	1620
	Max. admissible through-drive torque	TD	Nm	108	-			778	1266
	Splined shaft R overall torque	Ttotal	Nm	-	225	400	644	-
	Max. admissible through-drive torque	TD	Nm	-	176	365	548	-
Drive shaft load	max. admissible axial force	Fax max	N	700	1000	1500	2400	4000	4800
Drive shaft load	max. admissible radial force	Fq	N 2)	350	1200	1500	1900	2300	2800
Mass	Pump without through-drive incl. pilot valve	m	kg	14	17	23	35	47	62
	in addition, preload valve	m	kg	3.3			6.3
	in addition, in case of external supply	m	kg	2
Moment of inertia around drive axis			kg·m²	0.0009	0.0017	0.0033	0.0083	0.0167	0.0242
Filling quantity of the housing			l	0.4	0.7	1	1.6	2.2	3
Maximum admissible operating pressure		pmax	bar	280 3)				280
Operating pressure, min. (without load)	with preload valve	pmin	bar	≥ 1
	without preload valve	pmin	bar	≥ 20
	in case of external supply (20 bar) 4)	pmin	bar	> 10
Admissible inlet pressure		p	bar	0.8 ... 10
Hydraulic fluid				Mineral oil (HL, HLP) to DIN 51524
Hydraulic fluid temperature range		ϑ	°C	-20 … +70
Maximum admissible degree of contamination of the hydraulic fluid according to ISO 4406				Class 18/16/13 (for particle size ≤ 4/6/14 μm)

1)	The values are applicable at an absolute pressure of 1 bar at the suction opening S. With a reduction of the displacement or an increase in the inlet pressure, the speed can be increased according to the following characteristic curve. With a reduced inlet pressure, the speed is to be reduced.
2)	In case of higher radial forces, please consult us
3)	In case of higher pressures, please consult us
4)	In continuous operation; in case of operation below 10 bar, observe the notes

elektrisch

Size				18	28	45	71	100	140
Operating voltage		UB		24 +40 % –5 %
Operating range (short-time operation)	Upper limit value	UB(t)max	V	35
	Lower limit value	UB(t)min	V	21
Current consumption (in static control operation)	Rated current	Inom	A	0.6
	Maximum current	Imax	A	1.25
Inputs	Actual pressure value input X1; pin 10 and 11	U or I		Determination by means of ordering code
	Analog current inputs, load 1)	RB		100 Ω
	Analog voltage inputs	RE		≥ 50 kΩ
	Digital inputs	Logic 0		≤ 0,6 V
		Logic 1		≥ 21 V
Outputs	pactual / UOUT1	UO		0 ... 10 V
		Imax		1,5 mA
	αactual / UOUT2	UO		± 10 V
		Imax		1,5 mA
	Digital outputs	Logic 0		Ua < 1 V
		Logic 1		Ua ≥ UB – 5 V; 10 mA (short-circuit-proof)
Ambient temperature range at the pump		ϑ	°C	0 … 60
Storage temperature range (pump + electronics)		ϑ	°C	0 … 70
Electronics design				Integrated in the pilot valve (OBE)
Type of protection according to EN 60529	Pump incl. pilot valve			IP65 with mounted and locked plug-in connectors

1)	With configuration on current input: Maximum admissible input current 30 mA
2)	With SYDFEC, SYDFEn and SYDFED, the outputs are parameterizable, for the condition as supplied, see electrical connection.

Notice:

For information on the environment simulation testing for the areas of EMC (electro-magnetic compatibility), climate and mechanical load, see data sheet 30030-U.

Control loop quality

Notes:

The specified values are only valid when using the system-related components specified in this data sheet. At pressures < 20 bar, higher tolerances have to be anticipated due to lower actuating forces.

	Swivel angle control	Pressure control 1)
Linearity tolerance	≤ 1.0 %	≤ 1.5 % (≤ 1.0 %)
Temperature error	≤ 0.5 % / 10 K	≤ 0.5 % / 10 K
Hysteresis	≤ 0.2 %	≤ 0.2 %
Repetition accuracy	≤ 0.2 %	≤ 0.2 %

1)	Without considering the pump pulsation.

For applications outside these parameters, please consult us!

Transition function with pressure command value step with spool design "A"

The specified curve shapes and control times refer to a drive speed of 1500 rpm and are only reached with an optimization of the pressure controller.

T 95% in ms with a connected hydraulic fluid volume (lines and actuators)

Hydraulic fluid volume in l	T95% in ms
< 5	150
5 ... 10	200
15 ... 15	250

Transition function with swivel angle command value step with spool design "A"

Size 18, 28, 45, 71 p = 20 bar

Size 18, 28, 45, 71 p = 50 bar

Size 100 p = 50 bar

Size 140 p = 50 bar

For pressures up to 40 bar, the values of the response times are greater.

Schematic diagram: Actuating system supplied internally

1)	When using the pressure transducer HM 20 cable version: Installation in P (pump) or MP1 (preload valve) in connection with electronic version "Actual pressure value input F". When using an external pressure transducer: Installation in the P1 line (preferably close to the actuator) and electrical connection via the central connector. When using a preload valve, the pressure transducer is to be connected to P1 or MP1.

Schematic diagram: Actuating system supplied externally

The representation shows an example with integrated electronics.

1)	The use of an anti-cavitation valve (check valve with 0.2 bar spring) is essential in order to prevent dry-running in the error case.

2)	Pressure transducer	Mounting options	Comment
	HM 20-2X/315-F-C13-0.5 (cable version)	P	Only in connection with actual pressure value input "F"
	HM 20-2X/...-.-K35 (connector version)	P1	Preferably close to the actuator

	3) Maximum pressure limitation must be provided by the customer!
	4) Observe upper limit for external pilot oil pressure! (see operating instructions), recommendation: 20 bar absolute.

Important notes on external supply:

In the case of an actuating system with external supply, the pump adjustment will - in case of voltage failure - not switch to zero stroke but to the negative stop (displacement of 100 % flow from the system to the tank). With an active fault message, it is imperative that the machine control reacts (e. g. switching off the drive motor of the pump, interrupting the external supply of the actuating system). The command values for pressure and flow must always be greater than zero (pcommand ≥ 3 bar, αcommand ≥ 5 %) as due to drift or tolerances, there is no exact "zero" pressure or "zero" swivel angle. Under unfavorable conditions, smaller command value presettings can lead to cavitation. The actual pressure value must not be less than 10 bar for more than 10 minutes (lubrication).

Allocation of connector or mating connector and cable set

Pin	Signal	Description	Signal direction	Type of signal	Allocation in the cable set (accessories)
1	+ UB	Voltage supply	IN	24 V DC	1	Supply line 3 x 1.0 mm2
2	0 V = L0	Reference potential for the voltage supply	–		2
PE	Earth	Earthing connection for the electronics	–		green/yellow
3	Fault	Signals faults, e.g. cable break command / actual values, controller monitoring (logic 0 = error)	OUT	logic 24 V	white	Supply line 10 x 0.14 mm2 shielded (one end of the shield must be connected to the control!)
4	M0	Reference potential for analog signals	–		yellow
5	αCommand	Swivel angle command value	IN	analog ±10 V	green
6	αActual	Actual swivel angle value, normalized	OUT	analog ±10 V	Violet
7	pCommand	Pressure command value	IN	analog 0...10 V	pink
8	pActual	Actual pressure value, normalized	OUT	analog 0...10 V 1)	red
9		Function dependent on electronic type and additional function, see table Functions at pin 9			brown
10	Actual pressure value H	Actual pressure value input: Signal level dependent on feature 14 of the ordering codes Reserved with type "F" (0.5...5 V)	IN	analog	black
11	Actual pressure value L		–	analog	blue
n.c.					gray

Functions at pin 9

Pin	Additional function	Function dependent on feature 12 of the ordering codes (see page type key pilot and preload valve)	Signal direction	Type of signal
9	-..A…	Selecting a different oil volume adjustment (switch TD)	IN	logic 24 V
	-..B…	Power limitation active	OUT	logic 24 V
	-..C…	Command value of power limitation	IN	analog 0...10 V
	-..D…	Switch off pressure controller	IN	logic 24 V

1)	When using a pressure transducer with raised zero point (e. g. 4 ... 20 mA), a voltage of –1 ... –2.5 V will be output in case of a cable break.

X2: Connection of pressure transducer HM 20

HM 20-2X/315-F-C13-0,5 (cable version) (mating connector M12)

Pin	Signal HM 20	Pin
1	OUT, +UB	2	n.c.
3	Reference L0
4	IN, analog, 0.5 to 5 V DC	5	n.c.

installation orientation 0

The unit dimensions of the base pump (axial piston variable displacement pump A10VSO.../31) are contained in data sheet 92711.

Size 18 … 140

(Valve mounting direction "0"; shaft design "S”; without through-drive “N00”)
Dimensions in mm

(representation size 100)

Size								Dimensions with base pump variant "0479" or "0487"			Max. length
	A1	A3 1)	A4	A5	A6	A6 I	A6 II	A8 I	A8 II	A8 III	A9
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
18	120	198	158	63	178	63	115	233	125	100	170
28	128	208	158	63	195	80	115	243	135	115	194
45	134	218	158	63	205	90	115	253	145	125	219
71	146	232	158	63	254	104	150	267	159	150	257
100	151	237	158	63	247	100	147	272	164	150	317
140	162	250	143	78	257	110	147	285	182	150	317

1)	Dimension with base pump “0000” design

installation orientation 2

Size 18 … 140

(Valve mounting direction "2"; shaft design "S”; without through-drive “N00”)
Dimensions in mm

(representation size 100)

Size								Dimensions with base pump variant "0479" or "0487"			Max. length
	A1	A3	A4	A5	A6	A6 I	A6 II	A8 I	A8 II	A8 III	A9
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
18	100	116	158	63	178	63	115	151	125	100	253
28	108	127	158	63	195	80	115	162	135	115	263
45	114	137	158	63	205	90	115	172	145	125	278
71	126	151	158	63	254	104	150	186	159	150	306
100	131	156	158	63	247	100	147	191	164	150	373
140	142	180	143	78	257	110	147	215	182	150	373

Combination pumps

Attachment pump	Main pump
	A10VSO 18				A10VSO 28				A10VSO 45				A10VSO 71				A10VSO 100				A10VSO 140
	A1	A2	A3	A4	A1	A2	A3	A4	A1	A2	A3	A4	A1	A2	A3	A4	A1	A2	A3	A4	A1	A2	A3	A4
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
A10VSO 18	164	204	349	399	164	204	349	399	184	229	374	424	217	267	412	462	275	338	483	533	275	350	495	554
A10VSO 28					164	204	368.5	410	184	229	393.5	435	217	267	431.5	473	275	338	502.5	544	275	350	514	556
A10VSO 45									184	229	413	453	217	267	451	491	275	338	522	562	275	350	534	574
A10VSO 71													217	267	484	524	275	338	555	595	275	350	567	609
A10VSO 100																	275	338	613	664	275	350	625	679
A10VSO 140																					275	350	625	688

Ports

Size			18	28	45	71	100	140
B:	Working line (SAE J518) 1)
	Size		3/4"	3/4"	1"	1"	1 1/4"	1 1/4"
	Mounting thread (DIN 13)		M10 x 1.5; 17 deep			M14 x 2; 19 deep
	Maximum pressure 2)	bar	350
S:	Suction line (SAE J518) 1)
	Size		1"	1 1/4"	1 1/2"	2"	2 1/2"	2 1/2"
	Mounting thread (DIN 13)		M10 x 1.5; 17 deep		M12 x 1.75; 20 deep		M12 x 1.75; 17 deep
	Maximum pressure 2)	bar	10

1)	Dimensions according to SAE J518 only, metric mounting thread deviating from the standard.
2)	Application-specific short-time pressure peaks may occur. Please observe when selecting measuring devices and fittings. Specified pressures are in bar absolute.

Notes regarding size 71:

With pressure connection “B” of size 71, two SAE mounting connections rotated by 90° are available. SAE 1 1/4″ standard pressure series, 207 bar , for pressures up to 250 bar or SAE 1″ standard pressure series, 344 bar, for pressures up to 350 bar. For operating pressures exceeding 250 bar, the pressure flange SAE 1” must be used.

Dimensions in mm

Hubs for through-drives

Hubs for the combination of single pumps or the combination of SYDFE with other pumps. Observe that the attachment pump has a splined shaft SAE J744 with the specified diameter.

The following conditions apply to the attachment pumps listed in the table:

SYDFE and A10VSO with shaft S or R Internal gear pump PGH with shaft R, flange U2, see data sheet 10223 Internal gear pump PGF3 with shaft J, flange U2, see data sheet 10213 External gear pump AZPF with shaft R, front cover R, see data sheet 10089

Observe that the through-drive of the main pump and the flange of the attachment pump (see type key pump) are identical. Check in the current data sheet of the gear pump whether the shaft ends have the specified dimensions.

Main pump SYDFE or A10VSO...						Attachment pump
Size 18	Size 28	Size 45	Size 71	Size 100	Size 140	Ø shaft	Pump type (examples)
R902436099	R902436199	R902436100	R902436200	R902436201	R902436202	3/4" 19-4 (SAE A-B)	SYDFE-2X, A10VSO..31 Size 018 shaft S
	R902436098	R902436084	R902436083	R902436101	R902436102	7/8" 22-4 (SAE B)	SYDFE-2X, A10VSO..31 Size 028 shaft R; PGF3
		R902436103	R902436104	R902436105	R902436204	1" 25-4 (SAE B-B)	SYDFE-2X, A10VSO..31 Size 045 shaft R; PGH4
			R902436085	R902436105	R902436106	1 1/4" 32-4 (SAE C)	SYDFE-2X, A10VSO..31 Size 071 shaft R
				R902436086	R910943555	1 1/2" 38-4 (SAE C-C)	SYDFE-2X, A10VSO..31 Size 100 shaft S; PGH5
				R910943565	R910932172	1 3/4" 44-4 (SAE D)	SYDFE-2X, A10VSO..31 Size 140 shaft S
R910943528	R910986299	R910943529	R91094345	R910943560	R910943551	5/8" 16-4 (SAE A)	1PF2G2, PGF2, PGH2, PGH3, AZPF

Through-drives

KD3

Flange ISO 100, 2-hole for the attachment of

SYDFE.-2X (size 28 and size 45, flange A) A10VSO..31 (size 28 and size 45, flange A, see data sheet 92711)