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Rexroth Make Proportional Directional Valve 4WRKE27 Series

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Rexroth Make Proportional Directional Valve 4WRKE27 Series

Country/Region	china
City & Province	shanghai hongkong
Categories	Valves

Product Details

Rexroth 4WRKE Series Proportional Directional Valve

Size 10, 16, 25, 27, 32, 35
Component series 3X
Maximum operating pressure 350 bar
Maximum flow 3000 l/min

Features

*Pilot-operated 2-stage proportional directional valves with electrical position feedbackof the main control spool and integrated electronics (OBE) Control of flow direction and size
*Proportional solenoid operation
For subplate mounting: Porting pattern according to ISO 4401 Electrical position feedback
*Spring-centered main control spool Pilot control valve: single-stage proportional directional valve
*Main stage with position control

Technical Data

General

Type		4WRKE
Size		10	16	25	27	32	35
Installation position		any, preferably horizontal
Ambient temperature range	°C	-20 … +50
Storage temperature range	°C	-20 … +80
Weight	kg	8.7	11.2	16.8	17	31.5	34
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	27	32	35
Maximum operating pressure			bar	350
Maximum operating pressure	Port P		bar	315	350		210	350
	Port A		bar	315	350		210	350
	Port B		bar	315	350		210	350
Operating pressure range	Pilot control valve, pilot oil supply		bar	25 … 315
Maximum return flow pressure	Port T, external pilot oil return		bar	315	250		210	250
	Port T, internal pilot oil return		bar	10
	Port Y		bar	10
Maximum flow			l/min	170	460	870	1000	1600	3000
Nominal flow ¹⁾			l/min	25 50 100	125 150 200 220	220 350	500	400 600	1000
Pilot flow	input signal 0 → 100%	Port X and Y	l/min	4.1	8.5	11.7		13
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) ²⁾	Pilot control valve			Class 18/16/13 according to ISO 4406 (c)
	Main valve			Class 20/18/15 according to ISO 4406 (c)
Hysteresis			%	≤ 1
Response sensitivity			%	≤ 0.5

¹⁾	±10% with Δp = 10 bar, Δp = valve pressure differential
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.

Electrical

Size			10	16	25	27	32	35
Voltage type			Direct voltage
Type of signal			analog
Maximum current consumption	of the amplifier	A	1.5
	of the amplifier (impulse current)	A	3
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Power supply		V	24
Supply voltage range		V	18 … 35
Earthing (GND)		V	0
Command value input	"A1"	V	10
Command value input range	"F1"	mA	4 … 20
Actual value output	"A1"	V	10
Actual value output range	"F1"	mA	4 … 20

Hydraulic fluid	ClassifiSAARion	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
Phosphoric acid esters	HFD-R	FKM
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 %

SAAR specialized in pumps, motors, valves, bearings, couplings, gearbox, engine spare parts, filter elements, fittings, connectors, electronic components and accessories, mobile equiupment spare parts.

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