4/2, 4/3, and 5/2, 5/3 proportional directional valve, pilot operated, without electrical position feedback without/with integrated electronics (OBE)

Transcription

1 /, /, and /, / proptional directional valve, pilot operated, without electrical position feedback without/with integrated electronics (OE) RE 9/8. Replaces:. /8 ype.wrz,.wrze and.wrh Sizes to Component series 7X Maximum operating pressure bar Maximum flow 8 l/min ype WRZE -7X/...K/... with integrated electronics (OE) ype WRZ -7X/ K/... with the cresponding control electronics (separate der) able of contents Features Contents age Features Ordering codes, control spool symbols... Symbols 6 Function, section 7... echnical data, Electrical connection lock diagram of the integrated electronics (OE) f type WRZE Characteristic curves... Dimensions... 6 ccessies 7 ilot operated, -stage proptional directional valve with integrated electronics (OE) with type WRZE Control of flow direction and size Operation by means of proptional solenoids with central thread and detachable coil F subplate mounting: ting pattern accding to ISO Manual override, optional Spring-centered control spool Control electronics ype.wrze - Integrated electronics (OE) with voltage current input ( and/ F) ype.wrz - Digital analog amplifier in Euro-card fmat - nalog amplifier in modular design Infmation on available spare parts:

2 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Ordering codes (types WRZ and WRH; sizes to subplate mounting; size flange connection) WR_ 7X Hydraulic actuation Electro-hydraulic actuation = H = Z ype WRZ: F external electronics = no code With integrated electronics = E Size = Size 6 = 6 Size = Size = Size = F control spool symbols, see page Rated flow in l/min at valve pressure differential Δp = bar Size l/min = l/min = 8 l/min = 8 Size 6 l/min = l/min = l/min = 8 l/min = 8 Size l/min = l/min = Size 6 l/min = 6 l/min = Size l/min = Component series 7 to 79 = 7X (7 to 79: Unchanged installation and connection dimensions) F subplate mounting = no code F flange connection (size only) = F ilot control valve size 6 roptional solenoid with detachable coil = 6E ) Supply voltage Direct voltage V = G ) Without manual override = no code With concealed manual override = N9, ) Without special type of protection = no code Seawater-resistant = J ) ilot oil supply and return External pilot oil supply, external pilot oil return = no code Internal pilot oil supply, external pilot oil return = E Internal pilot oil supply, internal pilot oil return = E External pilot oil supply, internal pilot oil return = (only possible without code f size and type WRH)

3 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 * M = V = no code = D ) = = F = no code = F further details, see the plain text NR seals FKM seals Without pressure reducing valve With pressure reducing valve ZDR 6 D-X/YM-W8 (not adjustable) Electronics interface Command value ± V Command value to m F types WRZ and WRH Electrical connection type WRZ: K, ) = Without mating connect, with connect accding to DIN EN 7-8 Mating connect, separate der, see page 7 ype WRZE: K, ) = Without mating connect, with connect accding to DIN EN 7-8 Mating connect, separate der, see page 7 ) Not applicable with types WRH ) F version "J" "N" instead of "N9" ) F infmation on the seawater-resistant version, see data sheet 9-M ) F version "J" = seawater-resistant only "K" Electric special types of protection available on request. Control spool symbols a b a b a a = E- = E E- = E ) = W6 ) = W6- W8- = W9- ) Not f type WRH With symbols E- and W8-: : q V : q V / : q V / : q V With symbols E- and W9-: : q V : locked : q V / : q V (differential circuit, piston top at pt ) Notice: With symbols W6-, W8-, W9-, W6, there is a connection from and with less than % of the respective nominal cross-section in switching position "".

4 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Ordering codes (types WRZ and WRH ; subplate mounting) WR_ 7X * Hydraulic actuation = H Electro-hydraulic = Z actuation ype WRZ: F external electronics = no code With integrated electronics = E Size = F control spool symbols, see page Rated flow in l/min at valve pressure differential Δp = bar l/min = Component series 7 to 79 = 7X (7 to 79: Unchanged installation and connection dimensions) ilot control valve size 6 roptional solenoid with detachable coil = 6E ) Supply voltage Direct voltage V = G ) Without manual override = no code With concealed manual override = N9, ) Without special type of protection = no code Seawater-resistant = J ) Electrical connection type WRZ: Without mating connect, with connect accding to DIN EN 7-8 = K, Mating connect, separate der, see page 7 ype WRZE: Without mating connect, with connect accding to DIN EN 7-8 = K, Mating connect, separate der, see page 7 Electronics interface Command value ± V = Command value to m = F F types WRZ and WRH = no code Without pressure reducing valve = no code With pressure reducing valve ZDR 6 D-X/YM-W8 (not adjustable) = D ) NR seals FKM seals F further details, see the plain text = M = V ) Not applicable with types WRH ) F version "J" "N" instead of "N9" ) F infmation on the seawater-resistant version, see data sheet 9-M ) F version "J" = seawater-resistant only "K" Electric special types of protection available on request.

5 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Control spool symbols a b a b a a R R = E- = E E- = E ) = W6 ) = W6- W8- = W9- ) Not f type WRH With symbols E- and W8-: : q V : q V / : q V / R: q V With symbols E- and W9-: : q V : locked : q V / R: q V (differential circuit, piston top at pt ) Notice: Only external pilot oil supply and return possible With control spool W6-, W8-, W9-, W6, there is a connection from R and with less than % of the respective nominal cross-section in switching position "".

6 6/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Symbols (simplified) With electro-hydraulic actuation and f external electronics ype WRZ -7X./ and type WRZ -7XF/ a a b b X Y ype WRZ -7X./ a a b b X R Y ype WRZ -7X./ E a a b b X = external Y = external X = external Y = external X = internal Y = internal ype WRZ -7X./ and type WRZ -7XF/ a a b X Y ype WRZ -7X./ a a b X Y R ype WRZ. -7X./ E a a b With electro-hydraulic actuation and f integrated electronics ype WRZE -7X./ and type WRZE -7XF/ a a b b X Y X = external Y = external ype WRZE -7X./ and type WRZE -7XF/ a a b X Y ype WRZE -7X./ a a b X b R Y ype WRZE -7X./ E a a b b X = external Y = external X = internal Y = internal ype WRZE -7X./ a a b X Y R ype WRZE. -7X./ E a a b With hydraulic actuation ype WRH -7X./ and type WRH -7XF/ a a b X ype WRH -7X. a a b X R b X b X X = external Y = external X = external Y = external ype WRH -7X./ and type WRH -7XF/ a a X Y ype WRH -7X./ a a X R Y

7 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G 7/8 Function, section ilot control valve type DRE 6 he pilot control valve is a -way pressure reducing valve that is actuated by a proptional solenoid. It converts an electrical input signal into a proptional pressure output signal and is used f all valves of the type WRZ... and WRZ... he proptional solenoids are controllable, wet-pin DC solenoids with a central thread and a detachable coil. he solenoids are controlled by external electronics (type.wrz...). Set-up: he valve basically consists of: Housing () Control spool () with pressure measuring spool ( and ) Solenoids ( and 6) with central threads Function: he pressure in is set by means of the proptional solenoids. he amount of the pressure depends on the current. With de-energized solenoids (, 6), the control spool () is held in the central position by means of the pressure springs (8). ts and are connected with so that the hydraulic fluid can flow to the tank without obstructions. y energizing a proptional solenoid, e.g. solenoid "a" (), the pressure measuring spool () and with it the control spool () are moved to the right. his opens the connection from to and to via ifice-type cross-sections with progressive flow characteristic. With the surface of the pressure measuring spool () the pressure that builds up in channel acts on the control spool and against the solenoid fce. he pressure measuring spool () is suppted by solenoid "b". If the pressure exceeds the value set at solenoid "a", the control spool () is pushed back against the solenoid fce and connects with until the set pressure is reached again. he pressure is proptional to the solenoid current. When the solenoid is switched off, the control spool () is returned into the central position by the compression springs (8). ype DRE "a" "b" hrottle insert see page 6 9 ilot control valve with two switching positions (type DRE 6 ) he operation of this valve version basically cresponds to the valve with switching positions. However, this spool position valve is only equipped with solenoid "a" (). In the place of the second proptional solenoid there is a plug screw (9). Infmation on type DRE 6: revent the tank line from draining. If this is possible due to installation conditions, install a preload valve (with a preload pressure of approx. bar).

8 8/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Function, section ilot control valve type DREE 6 he pilot control valve is a -way pressure reducing valve that is actuated by a proptional solenoid. It converts an electrical input signal into a proptional pressure output signal and is used f all valves of the type WRZE... and WRZE... he proptional solenoids are controllable, wet-pin DC solenoids with a central thread and a detachable coil. he solenoids are controlled by the integrated electronics (type.wrze...). Set-up: he valve basically consists of: Housing () Control spool () with pressure measuring spool ( and ) Solenoids ( and 6) with central threads Integrated electronics (7) Function: he pressure in is set by means of the proptional solenoids. he amount of the pressure depends on the current. With de-energized solenoids (, 6), the control spool () is held in the central position by means of the pressure springs (8). ts and are connected with so that the hydraulic fluid can flow to the tank without obstructions. y energizing a proptional solenoid, e.g. solenoid "a" (), the pressure measuring spool () and with it the control spool () are moved to the right. his opens the connection from to and to via ifice-type cross-sections with progressive flow characteristic. With the surface of the pressure measuring spool () the pressure that builds up in channel acts on the control spool and against the solenoid fce. he pressure measuring spool () is suppted by solenoid "b". If the pressure exceeds the value set at solenoid "a", the control spool () is pushed back against the solenoid fce and connects with until the set pressure is reached again. he pressure is proptional to the solenoid current. When the solenoid is switched off, the control spool () is returned into the central position by the compression springs (8). 7 ype DREE 6 "a" "b" hrottle insert see page 6

9 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G 9/8 Function, section ilot operated proptional directional valves ypes WRZ and WRZ. Valves of type WRZ... are pilot operated -way directional valves that are actuated by proptional solenoids. hey control the flow direction and size. Valves of type WRZ... are equipped with an additional pt "R" (only size ). Set-up: he valve basically consists of: ilot control valve (9) with proptional solenoids ( and 6) Main valve () with main control spool () and centering spring () Notice! Due to the design principle, internal leakage is inherent to the valves, which may increase over the life cycle. Function: With de-energized solenoids (, 6), the main control spool () is held in the central position by means of the centering spring (). he main control spool () is controlled by the pilot control valve (9); the main control spool is proptionally moved, e.g. by actuating solenoid "b" (6). he control spool () is moved to the right, pilot oil enters the pressure chamber () via the pilot control valve (9) and deflects the main control spool () accding to the electric input signal. his opens the connection from to and to via ifice-type cross-sections with progressive flow characteristic. ilot oil is internally supplied to the pilot control valve via pt externally via pt X. Switching the solenoid off (6) he control spool () and main control spool () are moved back into the central position. Depending on the switching position, flow occurs from to and to to and to (R). n optional manual override ( and ) can be used to move the control spool () without solenoid energization. Notice: Inadvertent activation of the manual override may result in uncontrollable machine movements. 6 9 ype WRZE -7X/... "b" "a" X Y

10 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Function, section Externally pilot operated proptional directional valves ypes WRH and WRH. Valves of the type.wrh... are pilot operated proptional directional valves f external actuation via pressure control valves. Set-up: he valve basically consists of: Main valve () with main control spool () and centering spring () Diversion plate (6) Notice! Due to the design principle, internal leakage is inherent to the valves, which may increase over the life cycle. Function: he diversion plate (6) connects control pt that leads to the pressure chamber () with pt Y and control pt with pt X. If pt X is pressurized, the main control spool () is moved to the right ( to and to ). If pt Y is pressurized, the main control spool is moved to the left ( to and to ). he pilot pressure at the main valve must not exceed bar (6 bar with size )! ype.wrh -7X/ 6 X Y echnical data (f applications outside these parameters, please consult us!) general Valve type.wrz.wrze.wrh Installation position ny, preferably hizontal (f commissioning infmation, see data sheet 78) Stage temperature range C to +8 mbient temperature range C to +7 to + to +7 Weight Subplate mounting Size kg Size 6 kg Size kg Size kg... Size kg Flange connection Size kg With "D" kg +. in addition Sine test accding to DIN EN :8 cycles,... Hz with logarithmic frequency changing speed of oct./min., to 7 Hz, amplitude. mm (p-p), 7 to Hz, amplitude g, axes Random test accding to DIN EN :9 Hz, amplitude. g /Hz ( g RMS ) axes, min testing time per axis Shock test accding to DIN EN : Half sine g/ ms, times in positive/ times in negative direction per axis, axes Humid heat, cyclic accding to DIN EN 668--:6 Variant + C to + C, 9% to 97% relative humidity, cycles at hours each

11 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 echnical data (f applications outside these parameters, please consult us!) hydraulic (measured with HL6, ϑ oil = C ± C and p = bar) Size Size 6 Operating pressure ilot control valve External pilot oil supply bar to to Internal pilot oil supply bar to only to only with "D" with "D" Main valve bar Up to Up to Up to Up to Up to Return flow pressure t (pt R) (external pilot oil return) bar Up to Up to Up to Up to Up to t bar Up to Up to Up to Up to (internal pilot oil return) t Y bar Up to Up to Up to Up to Up to Flow of the main valve l/min Up to 7 Up to 6 Up to 87 Up to 6 Up to 8 ilot flow at pts X and Y l/min with stepped input signal % ilot volume f switching process % cm Hydraulic fluid See table below Hydraulic fluid temperature range C to +8 (preferably + to +) (at the valve wking pts) Viscosity range mm /s to 8 (preferably to 6) Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class accding to ISO 6 (c) ilot control valve Class 8/6/ ) Main valve Class /8/ ) Hysteresis % 6 ) he cleanliness classes specified f the components must be adhered to in hydraulic systems. Effective filtration prevents faults and at the same time increases the life cycle of the components. F the selection of the filters, see Hydraulic fluid Classification Suitable sealing materials Standards Mineral oils and related hydrocarbons HL, HL NR, FKM DIN Flame-resistant containing water HFC (Fuchs HYDROHERM 6M, etrofer Ultra Safe 6) NR ISO 9 Imptant infmation on hydraulic fluids! F me infmation and data on the use of other hydraulic fluids refer to data sheet 9 contact us! here may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! he flash point of the process and operating medium used must be K greater than the maximum solenoid surface temperature. Flame-resistant containing water: he maximum pressure differential per control edge is 7 bar. ressure preloading at the tank pt > % of the pressure differential; otherwise, increased cavitation. Life cycle as compared to operation with mineral oil HL, HL % to %

12 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. echnical data (f applications outside these parameters, please consult us!) electric Valve type.wrz ).WRZE Voltage type Command value overlap % Direct voltage Maximum current.. Solenoid coil resistance Cold value at C Ω.8 Maximum hot value Ω 7. Duty cycle % Maximum coil temperature ) C rotection class of the valve accding to EN 69 Control electronics I6 with mating connects mounted and locked ype WRZ Digital amplifier in Euro-card fmat ) V-VSD--X/... accding to data sheet nalog amplifier in Euro-card fmat ) with ramp time nalog amplifier in Euro-card fmat ) with ramp times V-VS--X/V/, accding to data sheet V-VS--X/V/, accding to data sheet nalog module amplifier ) V-8-X/... accding to data sheet 8 ype WRZE Integrated in the valve, see page nalog command value module ) V- SWM--X/... accding to data sheet 99 nalog command value module ) V-SWMK--X/... accding to data sheet 99 Digital command value card ) V-HCD--X/ accding to data sheet nalog command value card ) V-SWK--X/... accding to data sheet Current consumption I max.8 Impulse current Command value signal Voltage input "" V ± ) With osch Rexroth G control electronics ) Separate der Current input "F" m ) Due to the temperatures occurring at the surfaces of the solenoid coils, the European standards ISO 7- and EN 98 need to be adhered to. to

13 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Electrical connection F type.wrz... (f external electronics not with version "J" = seawater-resistant) F mating connects, see page 7 Connection at the connect Connection to mating connect E E E E to the amplifier to the amplifier F type.wrz... (f external electronics with version "J" = seawater-resistant) F mating connects, see page 7 Contact Connection with C D E F C D E Solenoid Solenoid Solenoid Solenoid n.c. F n.c. External electronics E Valve housing F type.wrze... (with integrated electronics (OE) and with version "J" = seawater-resistant) F mating connects, see page 7 Connect pin assignment Contact Signal with Signal at F Supply voltage VDC (u(t) = 9. to V); I max = V Reference (actual value) C Cannot be used ) Differential amplifier input D ± V; R e > kω to m; R e > Ω (Command value) E Command value reference potential F Cannot be used ) rotective grounding conduct E Connected to cooling element and valve housing ) Contacts C and F must not be connected! Command value: positive command value ( to V to m) at D and a reference potential at E result in a flow from to and to. negative command value ( to V to m) at D and a reference potential at E result in a flow from to and to. If the valve and the solenoid are on side "a" (control spool variants E and W6), a positive command value at D and a reference potential at E result in flow from to and to. Connection cable: Recommendation: Up to m cable length, type LiYCY x.7 mm Up to m m cable length, type LiYCY x. mm External diameter 6. to mm Only install the shield on the supply side on the protective grounding conduct.

14 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. lock diagram of the integrated electronics (OE) f type WRZE Interface Integrated electronics (OE) Valve Command value Reference potential D E Differential amplifier U/I U Undervoltage detection Ramp generat ) Step function generat Summing device Locking S Output stage ) U I Output stage ) U I Supply voltage: V GND rotective grounding conduct, ) E ower supply unit U U + Ui V Ui ) t E is connected to the cooling element and the valve housing ) he protective grounding conduct is screwed to the valve housing and cover ) Ramp can be set from to. s from the outside, identical f up and down ) he output stages are current-controlled )

15 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Characteristic curves size (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) l/min rated flow at bar valve pressure differential 8 / 6 / Flow in l/min p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant Command value in % l/min rated flow at bar valve pressure differential / / 7 Flow in l/min Command value in % 8 l/min rated flow at bar valve pressure differential 7 / p = bar, constant p = bar, constant / p = bar, constant p = bar, constant p = bar, constant Command value in % p = valve pressure differential accding to DIN (inlet pressure p minus load pressure p L minus return flow pressure p ) ransition functions with stepped, electric input signals, measured at p St = bar ype WRZ... Signal change in % Flow in l/min p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant Stroke in % 7 7 ype WRZE Signal change in % 6 8 Stroke in %

16 6/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Characteristic curves size 6 (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) l/min rated flow at bar valve pressure differential Flow in l/min Command value in % l/min rated flow at bar valve pressure differential / / Flow in l/min / / Command value in % l/min rated flow at bar valve pressure differential / / p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant Command value in % 8 l/min rated flow at bar valve pressure differential / p = bar, constant / p = bar, constant p = bar, constant p = bar, constant p = bar, constant Command value in % p = valve pressure differential accding to DIN (inlet pressure p minus load pressure p L minus return flow pressure p ) Flow in l/min Flow in l/min p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant

17 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G 7/8 Characteristic curves size 6 (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) ransition functions with stepped, electric input signals, measured at p St = bar ype WRZ... Signal change in % Stroke in % ype WRZE... Signal change in % Stroke in %

18 8/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Characteristic curves size (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) l/min rated flow at bar valve pressure differential Flow in l/min / / p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant Command value in % l/min rated flow at bar valve pressure differential Flow in l/min / / Command value in % p = valve pressure differential accding to DIN (inlet pressure p minus load pressure p L minus return flow pressure p ) p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant ransition functions with stepped, electric input signals, measured at p St = bar ype WRZ... Signal change in % Stroke in % 7 7 ype WRZE... Stroke in % Signal change in %

19 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G 9/8 Characteristic curves size (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) 6 l/min rated flow at bar valve pressure differential Flow in l/min 8 6 / / Command value in % p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant l/min rated flow at bar valve pressure differential Flow in l/min 6 7 / / Command value in % p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = valve pressure differential accding to DIN (inlet pressure p minus load pressure p L minus return flow pressure p ) ransition functions with stepped, electric input signals, measured at p St = bar ype WRZ... Signal change in % Stroke in % 7 7 ype WRZE Signal change in % Stroke in %

20 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Characteristic curves size (control spool "E, W6-, E, W6" as well as HL6, ϑ oil = C ± C and p = bar) l/min rated flow at bar valve pressure differential 8 6 / / p = bar, constant p = bar, constant p = bar, constant p = bar, constant p = bar, constant Flow in l/min Command value in % p = valve pressure differential accding to DIN (inlet pressure p minus load pressure p L minus return flow pressure p ) ransition functions with stepped, electric input signals, measured at p St = bar ype.wrz Signal change in % Stroke in % ype.wrze Signal change in % Stroke in %

21 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Dimensions: Size (dimensions in mm) ) without pressure reducing valve "b" 7 6, "a" 7 9 g ) with pressure reducing valve 8 ) ) 8 () , 7 6, 6 Ø Ø 6,6,, 7 F F X F Y F 7,8 8,/ Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "", separate der, see page 7 8 Mating connect "", separate der, see page 7 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Rzmax Required surface quality of the valve contact surface ressure reducing valve "D" 6 Identical seal rings f pts,,,, and 7 Identical seal rings f pts X and Y 8 Space required to remove the mating connect 9 Diversion plate (type WRH...) Machined installation surface, pting pattern accding to ISO ----, pts X and Y as required F subplates and valve mounting screws, see page 7

22 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Dimensions: Size 6 (dimensions in mm) "b" g ) without pressure reducing valve 9 ) with pressure reducing valve , "a" ) ) 9 () 9, 69,9,6 7, 9, Ø Ø 6,6,6 6 X Y Ø 8 Ø 9 F F G Ø F G F6 6 F X Y F 9,/ Rzmax Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "", separate der, see page 7 8 Mating connect "", separate der, see page 7 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Required surface quality of the valve contact surface ressure reducing valve "D" 6 Identical seal rings f pts,,, and 7 Identical seal rings f pts X and Y 8 Space required to remove the mating connect 9 Diversion plate (type WRH...) Machined installation surface, pting pattern accding to ISO , pts X and Y as required deviating from the standard: ts,,, Ø mm. Locking pin F subplates and valve mounting screws, see page 7

23 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Dimensions: Size (dimensions in mm) "b" 7 6, "a" g ) without pressure reducing valve ) with pressure reducing valve Ø Ø ) ) () Y 6 7 F Ø 6 F G F 8 9 X 76, 6 X F G F6 9,/ Y F Rzmax Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "", separate der, see page 7 8 Mating connect "", separate der, see page 7 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Required surface quality of the valve contact surface ressure reducing valve "D" 6 Identical seal rings f pts,,, and 7 Identical seal rings f pts X and Y 8 Space required f removing the mating connect 9 Diversion plate (type WRH...) Machined installation surface, pting pattern accding to ISO , pts X and Y as required Locking pin F subplates and valve mounting screws, see page 7

24 /8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Dimensions: Size (dimensions in mm) ) without pressure reducing valve 8 g ) with pressure reducing valve 6 9 "b" 7 6, "a" 7 9 Ø Ø 8 ) ) 6 (66) 9 76, 9 76,, 6 7 Ø 6 97 Y, F F G F 8,8 79, X Y X, 9, F G 7 F6 F,/ Rzmax Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "", separate der, see page 7 8 Mating connect "", separate der, see page 7 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Required surface quality of the valve contact surface ressure reducing valve "D" 6 Identical seal rings f pts,,, and 7 Identical seal rings f pts X and Y 8 Space required f removing the mating connect 9 Diversion plate (type WRH...) Machined installation surface, pting pattern accding to ISO --9--, pts X and Y as required deviating from the standard: ts,, and Ø8 mm. Locking pin F subplates and valve mounting screws, see page 7

25 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G /8 Dimensions: Subplate mounting size (dimensions in mm) 7 g "a" "b" Ø ) without pressure reducing valve ) with pressure reducing valve 8 9 9, 8 ) ) 68 8 () , 6, Ø 9,/ Rzmax 9 Required surface quality of the valve contact surface 9, 7, 77, 6, 7, Y R, 7, 6 6 max. Ø R X Ø 6 M max. Ø Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "" 8 Mating connect "" 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Identical seal rings f pts,,,, and R 6 Identical seal rings f pts X, Y, and L 7 Space required to remove the mating connect 8 dapter plate 9 ressure reducing valve "D" Diversion plate (type WRH...) Machined installation surface, pting pattern, pts X and Y as required ranspt aid F subplates and valve mounting screws, see page 7

26 6/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Dimensions: Flange connection size (dimensions in mm) 9, g , "a" "b" ) without pressure reducing valve ) with pressure reducing valve M6; 8 Ø98 6 ) ) 99 (9) Ø Ø Ø Ø X Y G/; 8 Main valve ilot control valve Dimension f version "WRZ..." (not seawater-resistant) Dimension f version "WRZE..." roptional solenoid "a" 6 roptional solenoid "b" 7 Mating connect "", separate der, see page 7 8 Mating connect "", separate der, see page 7 9 Mating connect, separate der, see page 7 Concealed manual override "N9" lug screw f valves with one solenoid Name plate f pilot control valve Name plate f main valve Integrated electronics (OE) Space required to remove the mating connect 6 dapter plate 7 ressure reducing valve "D" 8 Diversion plate (type WRH...) 9 ranspt aid F subplates and valve mounting screws, see page 7

27 RE 9/8..WRZ;.WRZE;.WRH Hydraulics osch Rexroth G 7/8 ccessies (not included in the scope of delivery) Mating connects Material number Mating connect f WRZ DIN EN 7-8 Solenoid "a", grey R97 Solenoid "b", black R97 Mating connect f WRZE DIN EN 7-8 e.g. R967 (plastic) and WRZE...J... e.g. R989 (metal) Hexagon socket head cap screws Size Size 6 Size Size Size (WRZ) Size (WRZ) x ISO 76 - M6 x -.9-flZn-h-L ightening tque M =. Nm ±% x ISO 76 - M6 x -.9 ightening tque M =. Nm ±% x ISO 76 - M6 x flZn-h-L ightening tque M =. Nm ±% x ISO 76 - M x flZn-h-L ightening tque M = 8 Nm ±% x ISO 76 - M6 x ightening tque M =. Nm ±% x ISO 76 - M x ightening tque M = 7 Nm ±% 6x ISO 76 - M x flZn-h-L ightening tque M = Nm ±% 6x ISO 76 - M x ightening tque M = Nm ±% 6x ISO 76 - M x flZn-h-L ightening tque M = Nm ±% 6x ISO 76 - M x ightening tque M = Nm ±% With a steel installation surface: 7x ISO 76 - M x flZn-h-L ightening tque M = 6 Nm ±% With a cast iron installation surface: 7x ISO 76 - M x -.9-flZn-h-L ightening tque M = 6 Nm ±% With a steel installation surface: 7x ISO 76 - M x ightening tque M = 6 Nm ±% With a cast iron installation surface: 7x ISO 76 - M x -.9 ightening tque M = 6 Nm ±% x ISO 76 - M x flZn-h-L ightening tque M = Nm ±% x ISO 76 - M x ightening tque M = Nm ±% Material number R98 R9 R96 R9 R96 R997 R986 R9 Subplates/connection flanges Data sheet Size Size 6 6 Size 8 Size 6 Size When using type WRZ..., use the following throttle inserts in channel and of the pilot control valve: hrottle insert Ø in mm Material number Size.8 R98 Size 6. R987 Size.8 R9798 Size - - Size - -

28 8/8 osch Rexroth G Hydraulics.WRZ;.WRZE;.WRH RE 9/8. Notes osch Rexroth G Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany hone +9 () 9 / 8- documentation@boschrexroth.de his document, as well as the data, specifications and other infmation set fth in it, are the exclusive property of osch Rexroth G. It may not be reproduced given to third parties without its consent. he data specified above only serve to describe the product. No statements concerning a certain condition suitability f a certain application can be derived from our infmation. he infmation given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.