4WRZ 32 W8-520-7X/6EG24N9K4/D3M from China,Manufacturer,Suppliers,Factory-zyhydraulics.com

Pilot-operated 2-stage proportional directional valve without integrated electronics (OBE)
Control of the direction and magnitude of a flow
Operation by means of proportional solenoids with central thread and detachable coil
For subplate mounting: Porting pattern according to ISO 4401
Optional auxiliary operating device
Spring-centered control spool

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Valves of type 4WRZ(E)... are pilot-operated 4-directional valves that are actuated by means of proportional solenoids. Their function is to control the flow direction and size.

Valves of type 5WRZ(E)... are equipped with an additional port "R" (only NG52).

Set-up:

The valve basically consists of:

Pilot control valve (9) with proportional solenoids (5 and 6)

Main valve (10) with main control spool (11) and centering spring (12)

Function:

With de-energized solenoids (5, 6), the main control spool (11) is held in the central position by means of the centering spring (12)

The main control spool (11) is controlled by the pilot control valve (9); the main control spool is proportionally moved, e.g. by actuating solenoid "b" (6)

→ The control spool (2) is moved to the right, pilot oil enters the pressure chamber (13) via the pilot control valve (9) and deflects the main control spool (11) proportionally to the electric input signal

→ Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics

Pilot oil supply to the pilot control valve internally via port P or externally via port X

Switching off the solenoid (6)

→ The control spool (2) and main control spool (11) are moved back into the central position

Depending on the spool position, flow occurs from P to A and B to T or P to B and A to T (R)

An optional manual override (14 and 15) can be used to move the control spool (2) without solenoid energization.

Notice:

Accidental activation of the manual override may lead to uncontrolled machine movements!

Notice:

Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.

01	02	03	04	05		06	07		08	09	10	11	12	13	14	15	16
4	WRZ				‒	7X		/	6E	G24							*

01	4 main ports	4
02	Proportional directional valve with electro-hydraulic operation and external electronics	WRZ
03	Size 10	10
	Size 16	16
	Size 25	25
	Size 32	32
	Size 52	52
04	Symbols; for the possible version, see "Symbols/Circuit diagrams"	E; E1-; E3-; W6-; W8-; W9-; EA; W6A
Rated flow NG10
05	25 l/min	25
	50 l/min	50
	90 l/min	85
Rated flow NG16
05	100 l/min	100
	125 l/min	125
	150 l/min	150
	180 l/min	180
Rated flow NG25
05	220 l/min	220
05	325 l/min	325
Rated flow NG32
05	360 l/min	360
05	520 l/min	520
Rated flow NG52
05	1000 l/min	1000
06	Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions)	7X
07	For subplate mounting	no code
07	For flange connection (only NG 52)	F
08	Pilot control valve NG6 Proportional solenoid with detachable coil	6E
09	Supply voltage 24 V	G24
10	Without manual override	no code
10	With concealed manual override	N9 1)
11	Without special type of protection	no code
11	Sea water-resistant	J 2)
Pilot oil supply and return
12	External pilot oil supply, external pilot oil return	no code
	Internal pilot oil supply, external pilot oil return	E
	Pilot oil supply internal, pilot oil return internal	ET
	External pilot oil supply, internal pilot oil return	T
Electrical connection
13	Without mating connector, with connector according to DIN EN 175301-803, separate order	K43)
13	Without mating connector, connector according to DIN EN 175201-804	K31 3)
14	Without pressure reducing valve	no code
14	With pressure reducing valve ZDR 6 DP0-4X/40YM-W80 (fixedly set)	D3
15	NBR seals	M
15	FKM seals	V
16	Further details in the plain text	*
1)	With version “J” → “N” instead of “N9”
2)	For data regarding the seawater-resistant version refer to data sheet 29115-M
3)	For version "J" = seawater-resistant only "K31"

general

Type			4WRZ
Size			10	16	25	32	52
Installation position			any, preferably horizontal
Ambient temperature range		°C	-20 … +70
Storage temperature range		°C	-20 … +80
Weight	For subplate mounting	kg	7.8	11.9	18.2	42.2	79.5
	for flange connection	kg					77.5
	with "D3"	kg	8.3	12.4	18.7	42.7	80
Sine test according to DIN EN 60068-2-6			10 cycles, 10…2000.. 10 Hz with logarithmic frequency changing speed of 1 octave/min, 5 to 57 Hz, amplitude 1.5 mm (p-p), 57 to 2000 Hz, amplitude 10g, 3 axes
Noise test according to DIN EN 60068-2-64			20…2000 Hz, amplitude 0.05g2/Hz (10gRMS) 3 axes, testing time 30 min per axis
Shock test according to DIN EN 60068-2-27			Half-sine 15g / 11 ms, 3 times in positive and 3 times in negative direction per axis, 3 axes
Damp heat according to DIN EN 60068-2-30			Variant 2: +25 °C … +55 °C, 90 % … 97 % relative humidity, 2 cycles á 24 hours

hydraulic

Size				10	16	25	32	52
Maximum operating pressure			bar	315	350
Operating pressure range	External pilot oil supply		bar	30 … 100				20 … 100
	Pilot control valve without "D3", internal pilot oil return		bar	30 … 100
	Internal pilot oil supply		bar	100 … 315	100 … 350
Maximum return flow pressure	Port T and R, external pilot oil return		bar	315	250		150	250
	Port T, internal pilot oil return		bar	30
	Port Y		bar	30
Maximum flow			l/min	170	460	870	1600	2800
Nominal flow			l/min	25 50 85	100 125 150 180	220 325	360 520	1000
Pilot flow	input signal 0 → 100%	Port X and Y	l/min	3.5	5.5	7	15.9	7
Pilot volume	switching process 0 → 100%		cm³	1.7	4.6	10	26.5	54.3
Hydraulic fluid temperature range			°C	-20 … +80
Hydraulic fluid temperature range	preferably		°C	-40 … +50
Viscosity range			mm²/s	20 … 380
Viscosity range	preferably		mm²/s	30 … 46
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			%	≤ 6

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

Size			10	16	25	32	52
Voltage type			Direct voltage
Command value overlap		%	15
Maximum solenoid current		A	1.5
Solenoid coil resistance	Cold value at 20 °C	Ω	4.8
Solenoid coil resistance	Maximum hot value	Ω	7.2
Actuated time		%	100
Maximum coil temperature 1)		°C	+ 150
Protection class according to DIN EN 60529			IP65 (If a suitable and a correctly mounted mating connector are used.)
Power supply		V	24
Supply voltage range		V	19,4 … 35

1)	Due to the surface temperatures occurring at the solenoid coils, the European standards ISO 13732-1 and EN 982 need to be adhered to.

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP	NBR / FKM	DIN 51524
Flame-resistant - containing water	HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620)	NBR	ISO 12922
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Flame-resistant - containing water: Maximum pressure differential per control edge 175 bar Pressure pre-loading at the tank port > 20 % of the pressure differential, otherwise increased cavitation Life cycle as compared to operation with mineral oil HL, HLP 50 % to 100 %

Type	4WRZ
Size	10	16	25	32	52
Installation position		any, preferably horizontal
Ambient temperature range	°C	-20 … +70
Storage temperature range	°C	-20 … +80
Weight	For subplate mounting	kg	7.8	11.9	18.2	42.2	79.5
for flange connection	kg		77.5
with "D3"	kg	8.3	12.4	18.7	42.7	80
Sine test according to DIN EN 60068-2-6		10 cycles, 10…2000.. 10 Hz with logarithmic frequency changing speed of 1 octave/min, 5 to 57 Hz, amplitude 1.5 mm (p-p), 57 to 2000 Hz, amplitude 10g, 3 axes
Noise test according to DIN EN 60068-2-64		20…2000 Hz, amplitude 0.05g2/Hz (10gRMS) 3 axes, testing time 30 min per axis
Shock test according to DIN EN 60068-2-27		Half-sine 15g / 11 ms, 3 times in positive and 3 times in negative direction per axis, 3 axes
Damp heat according to DIN EN 60068-2-30		Variant 2: +25 °C … +55 °C, 90 % … 97 % relative humidity, 2 cycles á 24 hours

Size	10	16	25	32	52
Maximum operating pressure		bar	315	350
Operating pressure range	External pilot oil supply	bar	30 … 100	20 … 100
Pilot control valve without "D3", internal pilot oil return	bar	30 … 100
Internal pilot oil supply	bar	100 … 315	100 … 350
Maximum return flow pressure	Port T and R, external pilot oil return	bar	315	250	150	250
Port T, internal pilot oil return	bar	30
Port Y	bar	30
Maximum flow		l/min	170	460	870	1600	2800
Nominal flow		l/min	25 50 85	100 125 150 180	220 325	360 520	1000
Pilot flow	input signal 0 → 100%	Port X and Y	l/min	3.5	5.5	7	15.9	7
Pilot volume	switching process 0 → 100%	cm³	1.7	4.6	10	26.5	54.3
Hydraulic fluid temperature range		°C	-20 … +80
preferably	°C	-40 … +50
Viscosity range		mm²/s	20 … 380
preferably	mm²/s	30 … 46
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		%	≤ 6

Size	10	16	25	32	52
Voltage type		Direct voltage
Command value overlap		%	15
Maximum solenoid current		A	1.5
Solenoid coil resistance	Cold value at 20 °C	Ω	4.8
Maximum hot value	Ω	7.2
Actuated time		%	100
Maximum coil temperature 1)		°C	+ 150
Protection class according to DIN EN 60529		IP65 (If a suitable and a correctly mounted mating connector are used.)
Power supply		V	24
Supply voltage range		V	19,4 … 35

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 25 l/min at a valve pressure differential of 10 bar

Size 10

Rated flow 50 l/min at a valve pressure differential of 10 bar

Size 10

Rated flow 85 l/min at a valve pressure differential of 10 bar

Size 10

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 100 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 125 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 150 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 180 l/min at a valve pressure differential of 10 bar

Size 16

Transition function with stepped electric input signals (ps = 50 bar)

Size 16

Rated flow 220 l/min at a valve pressure differential of 10 bar

NG25

Rated flow 325 l/min at a valve pressure differential of 10 bar

NG25

Transition function with stepped electric input signals (ps = 50 bar)

NG25

Rated flow 360 l/min at a valve pressure differential of 10 bar

Size 32

Rated flow 520 l/min at a valve pressure differential of 10 bar

Size 32

Transition function with stepped electric input signals (ps = 50 bar)

Size 32

Rated flow 1000 l/min at a valve pressure differential of 10 bar

NG52

Transition function with stepped electric input signals (ps = 50 bar)

NG52

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Product Category

4WRZ 32 W8-520-7X/6EG24N9K4/D3M

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Set-up:

Function:

Notice:

Notice:

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Set-up:

Function:

Notice:

Notice:

general

hydraulic

electrical

general

hydraulic

electrical

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 25 l/min at a valve pressure differential of 10 bar

Rated flow 50 l/min at a valve pressure differential of 10 bar

Rated flow 85 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 100 l/min at a valve pressure differential of 10 bar

Rated flow 125 l/min at a valve pressure differential of 10 bar

Rated flow 150 l/min at a valve pressure differential of 10 bar

Rated flow 180 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 220 l/min at a valve pressure differential of 10 bar

Rated flow 325 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 360 l/min at a valve pressure differential of 10 bar

Rated flow 520 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 1000 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 25 l/min at a valve pressure differential of 10 bar

Rated flow 50 l/min at a valve pressure differential of 10 bar

Rated flow 85 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 100 l/min at a valve pressure differential of 10 bar

Rated flow 125 l/min at a valve pressure differential of 10 bar

Rated flow 150 l/min at a valve pressure differential of 10 bar

Rated flow 180 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 220 l/min at a valve pressure differential of 10 bar

Rated flow 325 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 360 l/min at a valve pressure differential of 10 bar

Rated flow 520 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 1000 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

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