2WRC125K001-1X/E/V

Manufacturer: Bosch Rexroth

Material #: R901420262

Model : 2WRC125K001-1X/E/V

***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 2WRC125K001-1X/E/V (R901420262) is a high-response stage valve designed for precise control of flow rate and direction in closed-loop control circuits. This valve features a robust design that includes a pilot control valve with a servo directional valve pilot, a dry torque motor, and a low friction jet flapper amplifier. It also incorporates mechanical feedback of the spool position to ensure accuracy and reliability. The main control spool is responsible for the flow control, while an inductive position transducer, attached to the spool of the third stage, provides precise position sensing. The integrated control electronics within the WRCE model allow for real-time comparison of command and actual values, adjusting the pilot control valve solenoids accordingly to minimize system deviation. The main spool's stroke is controlled proportionally to the command value, though it's important to note that flow also depends on the valve pressure drop. Valve features include bidirectional flow capability from A to B or B to A and a leak-free closure with smaller command values due to the closed loop control circuit's correction of spool position. The opening point is factory preset at 0.5 V but can be calibrated after replacing parts using an AF nut. In terms of maintenance, only the filter element on the pilot control valve can be replaced without further adjustments needed except for zero calibration at the position controller. The spools are not pressure balanced; hence they require a recommended minimum control pressure derived from system pressure and additional reserves. This Bosch Rexroth valve is particularly suited for applications requiring closed-loop or open-loop control of large flows such as forging manipulators, pressing cylinders, and die casting machines. It offers high response performance in block installation design and can be equipped with either external or integrated electronics depending on the specific device type. The 2WRC series operates under maximum pressures as defined by its component series designation.

$142,168.00 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.

Repairs from $14,075.00

High-response valve in block installation design Control by directional servo valve Position sensing of the control spool via an inductive position transducer 2-way control element in seat design External or integrated control electronics, according to device type Closed-loop control or open-loop control of large flows:
Forging manipulators
Pressing cylinders
Die casting machines

The valve types 2WRC(E) are 3-stage high response valves.

They control the rate and direction of a flow and are primarily used in closed loop control circuits.

Design

They comprise of the following sub-assemblies:

A pilot control valve (1) as a 2-stage servo directional valve (pilot) With a dry torque motor Low friction jet / flapper amplifier and Mechanical feedback of the spool position A main control spool (2) for flow control An inductive position transducer (3) whose core (4) is attached to the spool (2) of the third stage And integrated control electronics (5) for 2WRCE orseparate electronics for the 2WRC version.

Function

Within the integrated control electronics (OBE) the command and actual values are compared and the pilot control valve solenoids are controlled via a currrent proportional the closed loop control deviation.

The pilot control valve asumes a proportional control position and controls the flows into or from control chambers A (6) and B (7), that actuate the main spool (2) by means of the closed loop control valve until the system deviation is 0.

The stroke of the main spool is thus controlled in proportion to the command value. It must be noted herethat the flow also depends on the valve pressure drop.

Valve features

Flow can be passed through the valve from A to B or from B to A.

The poppet spool closes or opens with a command value of approx. 2 %. With smaller command values the valve‘s closed loop control circuit trys to correct the spool position and thereby presses the spool, with up to the full system pressure, onto its seat and closes the connection leak-free.

The stated switching times are only valid for the closed loop control range of the valve. With command value jumps from the seat to small opening values, additional delay times occur.

The 2 % opening point (= 0.2 V) is factory pre-set. When replacing the pilot control valve or control electronics the opening point can be calibrated by adjusting the position transducer (3) by using the 13A/F nut.

When carrying out an exchange no adjustments to the control electronics and pilot control valve (= closed loop controller, controller or control electronics), other than the zero calibration at the position controller may be carried out.

Only the filter element can be replaced on the pilot control valve (see data sheet „Servo directional valve“)

Due to the diameter differences in the seat area, the spools are not pressure balanced. To compensate for the force differences for spool „K001“ 6 %, and for spools „D001“ and „S001“ 22 % of the system pressure is required as the control pressure, and then by adding reserves for flow forces and dynamics, the recommended minimum control pressure can be obtained (see technical data).

Attention:

A loss of power at the pilot control valve results in the spool being in an undefined position (2).

1)	Preferably, port B is to be connected to the actuator.

01	02	03	04	05		06		07	08		09	10
2	WRC				‒	1X	/	S		/		*

01	2/2 directional valve	2
02	Electrically operated high-response valve for block installation	WRC
03	For external analog electronics	no code
03	With integrated electronics (OBE)	E
04	Size 63	63
	Size 80	80
	Size 100	100
	Size 125	125
	Size 160	160
Designation of the spool characteristic curve / 2-way function
05	Spool with standard poppet seat (linear)	K001
	Spool with double cone (linear fine control range)	D001
	Spool with control window (progressive fine control range)	S001
06	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Pilot control valve
07	Directional servo valve	S
Power supply
08	with .WRC
	External control electronics	no code
	with .WRCE
	Supply voltage 24 VDC	G24
	Supply voltage ± 15 VDC	G15
Seal material
09	NBR seals, suitable for mineral oil HL and HLP according to DIN 51524	M
09	FKM seals	V
10	Further details in the plain text	*

For applications outside these parameters, please consult us!

general

Type			2WRC(E).../S
Size			63	80	100	125	160
Component series			1X
Installation position			any, preferably horizontal
Weight		kg	56	114	198	357	635
Storage temperature range		°C	-20 … +80
Ambient temperature range	WRCE	°C	-20 … +60
	WRC	°C	-20 … +70

Hydraulic (measured with HLP32, ϑoil = 40 ±5 °C)

Type				2WRC(E).../S
Size				63	80	100	125	160
Maximum operating pressure			bar	420
Maximum operating pressure	Main stage	Port A	bar	420
		Port B	bar	420
Maximum operating pressure	Pilot control valve	Port X	bar	315
		Port Y	bar	Pressure peaks < 100, static < 10
Nominal flow qVnom –10 % at Δp = 5 bar	For spool „K001“		l/min	2600	4100	6300	10100	17000
	For spool „D001“		l/min	2300	3600	5800	9200	15000
	For spool „S001“		l/min	1800	3000	5200	7800	13300
Zero flow of the servo pilot stage in relationship to pressure in line X
Control flow			cm³	36.3	67.9	132.5	313.4	565.5
Min. control pressure in % of the system pressure	For spool „K001“		%	15
	For spools „D001“ and „S001“		%	45
Maximum flow	For spools „K001“ and „D001“		l/min	5500	9000	14000	22000	35000
	For spool „S001“		l/min	8000	13000	20000	30000	50000
Switching time	at 200 bar	Stroke 50%	ms	37	32	45	50	70
		Stroke 100%	ms	70	50	75	90	120
	at 315 bar	Stroke 50%	ms	30	25	35	40	60
		Stroke 100%	ms	60	40	60	70	100
Pilot oil flow at X and Y with a stepped form of input signal from 0 to 100 % (315 bar)			l/min	42	135	165	320	430
Hydraulic fluid				Mineral oil (HL, HLP) to DIN 51524, other pressure fluids on request
Hydraulic fluid temperature range			°C	-20 … +80
	preferably		°C	+40 … +50
Viscosity range			mm²/s	20 … 380
	preferably		mm²/s	30 … 45
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)	Pilot control valve			Class 18/16/13 according to ISO 4406 (c)
	Main valve			Class 20/18/15 according to ISO 4406 (c)
Hysteresis			%	≤ 0.5
Response sensitivity			%	≤ 0.2
Range of inversion			%	≤ 0.2

1)	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.

electrical

Type			2WRC(E).../S
Voltage type			Direct voltage
Type of signal			analog
Valve protection to EN 60529			IP65 (with mating connector mounted and locked)
Opening point calibration		%	≤ 1
Zero shift upon change of	Hydraulic fluid temperature	%/10 K	≤ 0.3
	Return pressure in Y 0 to 10 % from px	%/bar	≤ 0.3
	Control pressure in X	%/100 bar	≤ 0.7

Control electronics	2WRCE	Integrated in the valve, see chapter Electrical connection, Block circuit diagram / pin allocation
Control electronics	2WRC	External control electronics, see data sheet 29931

Nominal command value range for 2WRCE:
0 ... +10 V ≙ 0 ... 100 %
In the command value range of 0 ... 0.2 V, the actual value remains constant at 0.2 V.
In case of slow command value modification from 0.2 V ... 10 V, the actual value follows the command value within ±0.1 V.
At a command value step to 10 V, the actual value can reach short-time values of up to approx. 10.5 V.

measured with HLP32, ϑOil = 40±5 °C

A Δp = 5 bar relates to a 100% flow value of the nominal flow of the associated table.

For other valve pressure differentials, the following applies:

Type 2 WRC.../...
(2/2-way function)

2-way function

Type 2WRC (Simplified: main stage with pilot control valve)

Type 2WRCE (Simplified: main stage with pilot control valve)

With integrated electronics (OBE)

Type 2WRCE (Detailed: main stage with pilot control valve)

With integrated electronics (OBE)

Component plug allocation with integrated electronics (OBE)

Component plug allocation	Pin	Allocation with a G24 supply voltage	Allocation with a G15 supply voltage
Component plug allocation	Pin	2WRCE	2WRCE
Power supply	A	+24 VDC	+15 VDC
Power supply	B	0 VDC	-15 VDC
	C	Enable (+24 V) 1)	Reference to A, B
Differential command value input	D E	0 ... +10 V Re = > 100 kΩ	0 ... +10 V Re = > 100 kΩ
Actual value	F	+0.2 ... +10 V Reference is pin B	0 ... ±10 V Reference is pin C
Earth	PE	connected to valve housing

1)	Without enable = SO37 ( –37 attached to the type code)

Mating connectors are included in the scope of delivery.

Do not connect PE if the valve has already been grounded via the system.

Supply voltage:

+24 VDC ±6 V; full bridge rectification with smoothing capacitor 2200 μF; Imax = 230 mA ±15 VDC ±0.45 V; stabilized and smoothened; Imax= 180 mA

Command value and actual value have the same polarity

D positive against E → main spool in opening direction

Notice:

Electrical signals provided via control electronics (e.g. actual value) must not be used to switch off safety-relevant machine functions!

(See also the European standard "Safety requirements for fluid-powered systems and their components - Hydraulics", EN 982!)

Integrated electronics (OBE) type VT13037 for valve type 2WRCE

Block diagram / pin assignment

External control electronics

Pin alloction for 2WRC

NG63

Dimensions in mm


Required surface quality of the valve contact surface

1	Pilot control valve (directional servo valve NG6)
2	Socket
3	Mating connector (material no. R900021267) included in the scope of delivery
4	Mating connector (material no. R900005414) included in the scope of delivery
5	Space required to remove the mating connector
6	Cabling (only with WRCE)
7	Valve mounting screws (included in the scope of delivery): 4 hexagon socket head cap screws ISO 4762 - M30 x 220- 10.9 Tightening torque for tightening factor 1.6: 1900 Nm
8	Locking pin for locating hole
9	Identical seal rings for ports X and Y
10	Name plate
11	Measuring ports for control pressures, threaded coupling G1/4
12	Transport aid

NG80

Dimensions in mm


Required surface quality of the valve contact surface

1	Pilot control valve (directional servo valve NG10)
2	Socket
3	Mating connector (material no. R900021267) included in the scope of delivery
4	Mating connector (material no. R900002460) included in the scope of delivery
5	Space required to remove the mating connector
6	Cabling (only with WRCE)
7	Valve mounting screws (included in the scope of delivery): 8 hexagon socket head cap screws ISO 4762 - M24 x 220- 10.9 Tightening torque for tightening factor 1.6: 960 Nm
8	Locking pin for locating hole
9	Identical seal rings for ports X and Y
10	Name plate
11	Measuring ports for control pressures, threaded coupling G1/4
12	Transport aid

Size 100

Dimensions in mm


Required surface quality of the valve contact surface

1	Pilot control valve (directional servo valve NG10)
2	Socket
3	Mating connector (material no. R900021267) included in the scope of delivery
4	Mating connector (material no. R900002460) included in the scope of delivery
5	Space required to remove the mating connector
6	Cabling (only with WRCE)
7	Valve mounting screws (included in the scope of delivery): 8 hexagon socket head cap screws ISO 4762 - M30 x 280 - 10.9 Tightening torque for tightening factor 1.6: 1900 Nm
8	Locking pin for locating hole
9	Identical seal rings for ports X and Y
10	Name plate
11	Measuring ports for control pressures, threaded coupling G1/4
12	Transport aid

NG125

Nominal dimensions in mm


Required surface quality of the valve contact surface

1	Pilot control valve (directional servo valve NG16)
2	Socket
3	Mating connector (material no. R900021267) included in the scope of delivery
4	Mating connector (material no. R900002460) included in the scope of delivery
5	Space required to remove the mating connector
6	Cabling (only with WRCE)
7	Valve mounting screws (included in the scope of delivery): 8 hexagon socket head cap screws ISO 4762 - M36 x 300- 10.9 Tightening torque for tightening factor 1.6: 3300 Nm
8	Locking pin for locating hole
9	Identical seal rings for ports X and Y
10	Name plate
11	Measuring ports for control pressures, threaded coupling G1/4
12	Transport aid

NG160

Nominal dimensions in mm


Required surface quality of the valve contact surface

1	Pilot control valve (directional servo valve NG16)
2	Socket
3	Mating connector (material no. R900021267) included in the scope of delivery
4	Mating connector (material no. R900002460) included in the scope of delivery
5	Space required to remove the mating connector
6	Cabling (only with WRCE)
7	Valve mounting screws (included in the scope of delivery): 12 hexagon socket head cap screws ISO 4762 - M42 x 420- 10.9 Tightening torque for tightening factor 1.6: 5000 Nm
8	Locking pin for locating hole
9	Identical seal rings for ports X and Y
10	Name plate
11	Measuring ports for control pressures, threaded coupling G1/4
12	Transport aid

Installation dimensions to DIN ISO 7368 – except for NS125 and 160

NG63

Dimensions in mm

NG80 and 100

Dimensions in mm

NG125

Dimensions in mm

NG160

Dimensions in mm

1	Locating hole
	Tolerances according to ISO 2768-mK

Recess of connections X and Y in the block only for NG160

Dimensions in mm

Installation bore for type 2WRC... according to DIN ISO 7368

Dimensions in mm

1	Depth of fit, minimum dimension
2	The ports P, T and B can be positioned around the central axis of port A. Sufficient distance from the mounting and control bores is to be observed
	Tolerances according to ISO 2768-mK

NG	ØD1H7	ØD2H7	ØD3H7	ØD4	ØD5	ØD6H7	ØD7	D8	max. ØD9	ØD10	H1	H2	H3	H4	H5	H7	H8	H9	H10	H11	H12	H13	H16	H17	H18	L1	L2	L3	L4	L5	W
	mm	mm	mm	mm	mm	mm	mm		mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
63	120	116	90	63	48	90	63	M30	12	8	130	155	95	40	20	85	165	195	57	137	33	28	4	4	65	180	125	62.5	75	38	0.05
80	145	140	110	80	60	110	80	M24	16	10	175	205	130	40	25	125	215	245	90	180	60	25	5	5	50	250	200	-	-	-	0.1
100	180	174	135	100	75	135	100	M30	20	10	210	245	155	50	29	155	270	305	112	225	75	32	5	5	63	300	245	-	-	-	0.2
125	225	220	200	150	95	200	125	-	-	-	257	300	192	40	31	195	335	380	140	280	93	37	5.5	7		-	-	-	-	-	0.2
160	300	290	270	200	120	270	200	-	-	-	370	425	268	50	45	245	420	480	175	350	115	45	5.5	8		-	-	-	-	-	0.2

Spare parts & repair

2WRC125K001-1X/E/V

Manufacturer: Bosch Rexroth

Material #: R901420262

Model : 2WRC125K001-1X/E/V

More are expected on May 19, 2025

This product is eligible for factory repair.

Design

Function

Valve features

Attention:

general

Hydraulic (measured with HLP32, ϑoil = 40 ±5 °C)

electrical

measured with HLP32, ϑOil = 40±5 °C

Type 2 WRC.../... (2/2-way function)

2-way function

Type 2WRC (Simplified: main stage with pilot control valve)

Type 2WRCE (Simplified: main stage with pilot control valve)

Type 2WRCE (Detailed: main stage with pilot control valve)

Component plug allocation with integrated electronics (OBE)

Supply voltage:

Notice:

Integrated electronics (OBE) type VT13037 for valve type 2WRCE

External control electronics

NG63

NG80

Size 100

NG125

NG160

Installation dimensions to DIN ISO 7368 – except for NS125 and 160

NG63

NG80 and 100

NG125

NG160

Recess of connections X and Y in the block only for NG160

Installation bore for type 2WRC... according to DIN ISO 7368

Related Products

Information

Account

Type 2 WRC.../...
(2/2-way function)