4/2- and 4/3-way directional valves pilot operated, Type 4WEH externally pilot operated, Type 4 WH

Transcription

1 RE 75/0.03 Replces: 0.0 /- nd /3-wy directionl vlves pilot operted, ype WEH externlly pilot operted, ype WH Nominl sizes 0 to 3 Series ; ; 7 Mximum operting pressure 350 r Mximum flow 00 L/min ype WEH E7/..E..N9..K with plug-in connector ) H093 ype WEH 0 D/..E..N9..K with plug-in connector ) Fetures H ype WH.7/ ype WEH.7/.E..N9..K with plug-in connector ) Overview of contents Contents ge Fetures Ordering detils, 3 Symols to refered types 7, Function, section 9,0 ilot oil supply echnicl dt to Chrcteristic curves, performnce limits 5 to 9 Unit dimensions 0 to Item description 5 Switching time djustment, pressure reducing vlve, ck pressure vlve Vlves used to control the strt, stop nd direction of fluid flow Electro-hydrulic opertion (WEH), hydrulic opertion (WH) For suplte mounting, orting pttern to DIN 30 form, ISO 0 nd CEO-R H, Supltes to ctlogue sheets RE 5 05 to RE 5 00 (seprte order), see pges to Spring or pressure centered, spring or hydrulic offset Wet pin DC or C solenoids, optionl Hnd override, optionl Electricl connections s n individul or centrl connection (see RE 3 7) Switching time djustment, optionl ck pressure vlve in the -chnnel of the min vlve, optionl ccessories to ctlogue sheet RE 30: Stroke djustment t the min spool, optionl Stroke djustment nd/or end position monitoring, optionl Mechnicl or inductive limit switch (proximity type) t min spool, optionl ) Seprte order 003 y osch Rexroth G, Industril Hydrulics, D-973 Lohr m Min ll rights reserved. No prt of this document my e reproduced or stored, processed, duplicted or circulted using electronic systems, in ny form or y mens, without the prior written uthoristion of osch Rexroth G. In the event of contrvention of the ove provisions, the contrvening prty is oliged to py compenstion. WEH /WH / RE 75/0.03

2 Ordering detils Up to 0 r (not for type W.H 5 ) = No code Up to 350 r = H -wy version = ypes of opertion Electro-hydrulic = WEH Hydrulic = WH Nominl sizes NS 0 = 0 NS = NS 5 (type W.H.7/ ) ) = NS 5 (type W.H 5./ ) ) = 5 NS 3 = 3 Spool return y mens of springs = No code Hydrulic 3) = H For symols, see pge Series 0 to 9 NS 0 (0 to 9: unchnged instlltion nd connection dimensions) Series 0 to 9 NS 5 (W.H 5.) nd NS 3 (0 to 9: unchnged instlltion nd connection dimensions) Series 70 to 79 NS nd 5 (W.H.) (70 to 79: unchnged instlltion nd connection dimensions) Spool return in the pilot vlve for -position vlve nd solenoids Only possile for spools C, D, K, Z nd hydrulic spool return in the min vlve: Without spring return Without spring return with detent ) = OF ilot vlve with wet pin solenoids ) High performnce vlve (RE 3 7) = E V DC ) = G 30 V C 50/0 Hz ) = W30 For further voltges, frequencies nd electricl dt see ctlogue sheet RE 3 7 Without hnd override = No code With hnd override ) = N With protected hnd override ) = N9 Externl pilot oil supply, externl pilot oil drin 5) = No code Internl pilot oil supply, externl pilot oil drin 5; ) = E Internl pilot oil supply, internl pilot oil drin ) = E Externl pilot oil supply, internl pilot oil drin 5) = For type WH only No code possile! Versions E nd s 3-position vlve with pressure centering re only possile, if p St x p nk + p St min! = = = 7 = O p St p St min p nk p ö = ilot pressure = ilot pressure, minimum = nk pressure = Opening pressure For foot notes see pge 3! RE 75/0.03 / WEH /WH

3 * K ) = No code = S = S = No code = V = Further detils in cler text NR sels FKM sels (other sels on request) ttention! he comptiility of the sels nd pressure fluid hs to e tken into ccount! No code = Without pressure reducing vlve D3 7) = With pressure reducing vlve ck pressure vlve (not for NS 0) ; 7) No code = Without ck pressure vlve,5 = With ck pressure vlve (p ö =.5 r) hrottle insert ) No code = Without throttle insert 0 = hrottle Ø 0. mm 0 = hrottle Ø.0 mm = hrottle Ø. mm 5 = hrottle Ø.5 mm ccessories Stroke djustment, for ordering detils see RE 30 ccessories Inductive limit switch, for ordering detils see RE 30 Electricl connections ) Individul connection; with component plug DIN to EN , without plug-in connector Without switching time djustment Switching time djustment s meter-in control Switching time djustment s meter-out control ) Stndrd version ) High performnce version 3) switched positions (hydrulic end position): for spools C, D, K, Z, 3 switched positions (hydruliclly centered): only for NS, NS5 (type H-W.H 5 ) nd NS3 ) his ordering detil only pplies to electro-hydrulic opertion. 5) When using NS0 vlves, with n externl pilot oil supply or n externl pilot oil drin, the SO30 version of the sndwich plte must e used. he designtion SO30 must e entered t the end of the type designtion (sndwich plte). ) With n internl pilot oil supply: Minimum control pressure: ge 0 must e tken into ccount! In order to void excessive pressure peks, throttle insert (0) should e provided in the port of the pilot vlve (see pge 9). 7) Only in conjunction with throttle insert 0 ) lug-in connectors must e ordered seprtely (RE 3 7) referred types, t pge 7 nd, re redily ville. WEH /WH 3/ RE 75/0.03

4 Symols WH,,../..,,..H../.. WH, 0,../.., 0,..H../.. WEH../....H../....H../O..H../OF = C = D = K = Z WEH 0 0. ) 0. 0 H../.. 0 H. 0 H. = E ) = F WH,,../.. = G = H../.. WEH..H../.. = = J = L = M = = Q = R ) Exmple: Spool E with switched position Ordering exmple: H-WEH E7/EGN9ESK..0..V.. ) Spool S only for NS = S ) = = U = V = W RE 75/0.03 / WEH /WH

5 WEH /WH 5/ RE 75/0.03,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Symols with switched positions = externl; = externl Vlves with spring offset Vlves with hydrulic offset ype WEH.../... ype WEH..H.../... ype WEH..H.../OF... ype WEH..H.../O... = internl; = internl = internl; = externl = externl; = internl ype WEH.../...E... ype WEH..H.../...E... ype WEH..H.../O...E... ype WEH..H.../OF...E... ype WEH.../...E... ype WEH..H.../...E... ype WEH..H.../O...E... ype WEH..H.../OF...E... ype WEH.../... ype WEH..H.../... ype WEH..H.../O... ype WEH..H.../OF...

6 Symols with 3 switched positions Vlves with spring centered neutrl position ype WEH.../... Vlves with pressure centered neutrl position only NS, 5 (type W.H 5./ ) nd 3 ype WEH..H.../... = externl; = externl 0,, 0 0,, 0 L L ype WEH.../...E... ype WEH..H.../...E... = internl; = externl 0,, 0 0,, L 0 L ype WEH.../...E... 3-position vlves, pressure centered, preferrly with externl pilot oil supply nd/or drin (No code., E) = internl; = internl 0,, 0 For the pre-conditions for internl pilot oil supply nd/or drin (E, ) see pges 3 or 0. ype WEH.../... = externl; = internl 0,, 0 RE 75/0.03 / WEH /WH

7 referred types (redily ville) yp, Size 0 Mteril-No. yp, Size Mteril-No. WEH 0 C/EGN9EK R90095 WEH C7/EGN9EK R90090 WEH 0 C/EGN9K R90095 WEH C7/EGN9K R90090 WEH 0 D/EGN9EK R WEH D7/EGN9EK R WEH 0 D/EGN9K R WEH D7/EGN9K R WEH 0 E/EGN9EK R WEH E7/EGN9EK R90090 WEH 0 E/EGN9K R9009 WEH E7/EGN9K R90093 WEH 0 G/EGN9EK R WEH G7/EGN9EK R9009 WEH 0 G/EGN9K R90095 WEH G7/EGN9K R WEH 0 H/EGN9K R WEH H7/EGN9EK R WEH 0 J/EGN9EK R WEH H7/EGN9K R WEH 0 J/EGN9K R90057 WEH J7/EGN9EK R WEH 0 M/EGN9K R WEH J7/EGN9K R WEH 0 Q/EGN9EK R WEH M7/EGN9EK R90097 WEH 0 Q/EGN9K R WEH M7/EGN9K R90099 WEH 0 R/EGN9EK R WEH R7/EGN9EK R WEH 0 R/EGN9K R WEH R7/EGN9K R WEH 0 /EGN9K R WEH 7/EGN9EK R9009 WEH 0 V/EGN9K R WEH 7/EGN9K R WEH 0 HD/EGN9EK R WEH V7/EGN9K R WEH 0 HD/EGN9K R WEH W7/EGN9EK R WEH W7/EGN9K R WEH K7/EGN9K R WEH Z7/EGN9K R WEH HC7/EGN9K R WEH HD7/EGN9EK R WEH HD7/EGN9K R NG, 5 nd 3 see pge WEH /WH 7/ RE 75/0.03

8 referred types (redily ville) yp, Size WEH C7/EGN9EK/0 WEH C7/EGN9K WEH D7/EGN9EK/0 WEH D7/EGN9K WEH E7/EGN9EK/0 WEH E7/EGN9K WEH G7/EGN9EK/0.5 WEH G7/EGN9K WEH H7/EGN9EK/0.5 WEH H7/EGN9K WEH J7/EGN9EK/0.5 WEH J7/EGN9K WEH M7/EGN9K WEH Q7/EGN9EK/0 WEH Q7/EGN9K WEH R7/EGN9EK/0 WEH R7/EGN9K WEH W7/EGN9EK/0 WEH W7/EGN9K WEH HD7/EGN9EK/0 WEH HD7/EGN9K WEH HK7/EGN9EK/0 WEH K7/EGN9EK/0 WEH K7/EGN9K WEH Z7/EGN9K Mteril-No. R R R R R R R R90097 R R R R90095 R R90095 R R R R R90097 R R R R R R yp, Size 3 WEH 3 C/EGN9EK/0.5 WEH 3 C/EGN9K WEH 3 D/EGN9EK/0 WEH 3 D/EGN9K WEH 3 E/EGN9EK/0 WEH 3 E/EGN9K WEH 3 G/EGN9EK/0 WEH 3 G/EGN9K WEH 3 H/EGN9K WEH 3 J/EGN9EK/0 WEH 3 J/EGN9K WEH 3 M/EGN9EK/0 WEH 3 M/EGN9K WEH 3 Q/EGN9EK/0 WEH 3 Q/EGN9K WEH 3 R/EGN9EK/0 WEH 3 W/EGN9K WEH 3 HC/EGN9K WEH 3 HDR/EGN9EK/0 WEH 3 HDC/EGN9K Mteril-No. R R R R R R R R R90095 R R R9007 R R90099 R90070 R90090 R R R9009 R Further preferred types nd stndrd units re to e found in the ES (Stndrd rice List). yp Size 5 H-WEH 5 C/EGN9K H-WEH 5 D/EGN9K H-WEH 5 E/EGN9K H-WEH 5 G/EGN9K H-WEH 5 H/EGN9K H-WEH 5 J/EGN9K H-WEH 5 Q/EGN9K H-WEH 5 R/EGN9K H-WEH 5 /EGN9K H-WEH 5 W/EGN9K H-WEH 5 HD/EGN9K H-WEH 5 Z/EGN9K Mteril-No. R90093 R R R R R R R90070 R R R R90090 RE 75/0.03 / WEH /WH

9 Function, section C 7 3. C 3. D D ype WEH... Directionl vlves, type WEH Vlves of type WEH re directionl spool vlves with electro-hydrulic opertion. hey control the strt, stop nd direction of flow. he directionl vlves siclly consist of the min vlve with housing (), min control spool (), one or two return springs (3.) nd (3.), nd the pilot vlve () with one or two solenoids (5.) nd/or (5.). he min control spool () in the min vlve is held in the neutrl or in the initil position either y the springs or y mens or pressure. In the initil position, the two spring chmers () nd () re connected to the tnk without pressure vi the pilot vlve (). he pilot vlve is supplied with pilot fluid vi the pilot line (7). he pilot oil supply cn e either internl or externl (externl vi port ). When the pilot vlve is operted, e. g. solenoid, the pilot spool (0) is moved to the left nd thus spring chmer () is pressurised with pilot pressure. Spring chmer () remins unpressurised. he pilot pressure cts on the left hnd side of the min control spool () nd pushes it ginst the spring (3.). s consequence, the ports to nd to re connected in the min vlve. When the solenoid is de-energised, the pilot spool returns to its initil position (exception: detented spool). he spring chmer () is unloded to tnk. he pilot oil is expelled from the spring chmer vi the pilot vlve into the chnnel. he pilot oil supply nd drin re internl or externl (externl vi port ). n optionl hnd override (9) permits the pilot spool (0) to e operted without energising the solenoid. ype WH Directionl vlves, type WH Vlves of type WH re directionl spool vlves with hydrulic opertion. hey control the strt, stop nd direction of flow. he directionl vlves siclly consist of the vlve housing (), the min control spool (), one or two return springs (3.) nd (3.) in the cse of vlves with spring return or spring centring, nd the interconnecting plte (). he control spool () is operted directly y mens of hydrulic pressure. he control spool () is held in the neutrl or in the initl position either y springs or y mens of pressure. ilot oil supply nd pilot oil drin re externl (see pge 9). /3-wy directionl vlve with spring centring of the control spool In this model, the min control spool () is held in the neutrl position y two return springs (3.) nd (3.). he two spring chmers () nd () re connected to ports nd vi the inter-connecting plte (). When one of the two ends of the min control spool () is pressurised with pilot pressure, the spool is moved to the switched position. he required ports in the vlve re then opened to flow. When the pilot pressure is removed, the spring on the opposite side to the pressurised spool re cuses the spool to return to its neutrl or initil position. WEH /WH 9/ RE 75/0.03

10 Function, section L /3-wy directionl vlve with pressure centring of the min control spool, type WEH H he min control spool () in the min vlve is held in the neutrl position y pressuristion of the two end fces. centring sleeve () is supported in the housing nd holds the spool in position. y removing the pressure from one of the spool ends, the min control spool () is moved to the shifted position. he unloded spool re displces the returning pilot oil vi the pilot vlve into the -chnnel (externl). RE 75/0.03 0/ WEH /WH

11 ilot oil supply ype WH he pilot oil supply is externl vi chnnels nd. ype WEH he pilot oil drin is externl vi chnnel from seprte circuit. he pilot oil drin is externl vi chnnell to tnk. ype WEH E he pilot oil supply is internl from chnnel of the min vlve. (see lso pge, foot notes 3) nd ) ) he pilot oil drin is externl vi chnnel to tnk. ort in the suplte is plugged. Conversion from externl to internl or from internl to externl pilot oil supply for NS: Remove the cover on the solenoid side, Remove or fit the plug () nd replce the cover. ype WEH E he pilot oil supply is internl from chnnel of the min vlve. he pilot oil drin is internl vi chnnel to tnk. orts nd in the suplte re plugged. ype WEH he pilot oil supply is externl vi chnnel from seprte circuit. he pilot oil drin is internl vi chnnel to tnk. ort is the suplte is plugged. lug M DIN 90., 3/F pilot oil drin lug M DIN 90., 3/F pilot oil supply 3 lug M x DIN 90., /F for externl seling ightening torque M for cover fixing screws: NS: 35 Nm; NS5: Nm ightening torque M for pilot vlve fixing screws: NS 0 to 3: 9 Nm hrottle insert he use of throttle insert is required if the pilot oil supply in the chnnel of the pilot vlve is to e limited (see pge 3, ) ). his throttle is inserted in the chnnel of the pilot vlve. Nominl size Section D D Nominl size 5 (type W.H.7/ ) ilot oil supply Externl: plugged Internl: open ilot oil drin Externl: plugged Internl: open 3 Min vlve Min vlve Cover Nominl size 5 (type W.H 5./ ) Section 3 Section C C ilot oil supply Externl: plugged Internl: open ilot oil drin Externl: plugged Internl: open Section ilot vlve Section ilot vlve ilot vlve Cover Min vlve Nominl size 0 Section ilot vlve Section C C Min vlve ilot oil supply Externl: plugged Internl: open Nominl size 3 ilot vlve Section ilot oil drin Externl: plugged Internl: open ilot oil supply Externl: plugged Internl: open Min vlve ilot oil drin Externl: plugged Internl: open ilot oil supply Externl: plugged Internl: open ilot oil drin Externl: plugged Internl: open WEH /WH / RE 75/0.03

12 echnicl dt (for pplictions outside these prmeters, plese consult us!) Generl Nominl sizes NS0 NS NS5 NS5 NS3 W.H W.H 5 Weight Vlve with one solenoid kg pprox.. pprox..5 pprox..5 pprox. 7. pprox. 0.5 Vlve with two solenoids, spring centered kg pprox., pprox..9 pprox..9 pprox..0 pprox..0 Vlve with two solenoids, pressure centered kg pprox.. pprox..9 pprox..9 pprox. 9.0 pprox..0 Vlve with hydrulic opertion (WH ) kg pprox. 5.5 pprox. 7.3 pprox. 0.5 pprox..5 pprox Switching time djustment kg pprox. 0. pprox. 0. pprox. 0. pprox. 0. pprox. 0. ressure reducing vlve kg pprox. 0. pprox. 0. pprox. 0. pprox. 0. pprox. 0. Instlltion Optionl; horizontl with hydrulic spool return H nd symols C, D, K, Z, mient temperture rnge C 30 to + 50 Hydrulic Mx. operting pressure orts,, ype WEH r ype H-WEH r ort With externl pilot oil drin r 35 5) With internl pilot oil drin ) r 0 DC; 0 C ort With externl pilot oil drin: r 0 DC; 0 C ype WH r ressure fluid Minerl oil (HL, HL) to DIN 5 5 ) ; Fst io-degrdle pressure fluids to VDM 5 (see lso RE 90 ); HEG (rpe seed oil) ) ; HEG (polyglycols) 7) ; HEES (synthetic ester) 7) ; Other pressure fluids on request ressure fluid temperture rnge C 30 to + 0 (for NR sels) 0 tos + 0 (for FKM sels) Viscosity rnge mm /s 0 to 00 Clenliness clss to ISO code Mximum permissile degree of contmintion of the pressure fluid is to ISO 0 (C) clss 0//5 ) Mximum control pressure r (with higher control pressures pressure reducing vlve must e used.) Minimum control pressure Externl pilot oil supply, internl pilot oil supply (for spools: D, K, E, J, L, M, Q, R, U, W) 3-position vlves, spring-centred ype H-WEH r ype WEH r position vlves, pressure-centered r.5 -position vlves with spring offset ype H-WEH r ype WEH r position vlves hydrulic offset r 7 5 Internl pilot oil supply (for spools C, F, G, H,,, V, Z, S ) ) r.5 3).5 ).5 ).5 ).5 ) Explntion of the footnotes, see pge 3! RE 75/0.03 / WEH /WH

13 echnicl dt (for pplictions outside these prmeters, plese consult us!) Hydrulic Nominl sizes NS0 NS NS5 NS5 NS3 W.H W.H 5 Switching pilot oil volume 3-position vlve, spring centered cm position vlve cm position vlve, pressure centered cm 3 WH WEH WH WEH WH WEH From the neutrl position to the switched position cm From the switched position to the neutrl position cm From the neutrl position to the switched position cm From the switched position to the neutrl position cm ilot oil flow for the shortest switching time L/min pprox. 35 pprox. 35 pprox. 35 pprox. 35 pprox. 5 ) s 3-position vlve, pressure centring is only possile when p St x p nk + p St min. ) Spool S, only for NS 3) For symols C, F, G, H,,, V, Z internl pilot oil supply is only possile when the flow from to, in the mid position (for 3- position vlve) or during moving through the mid position (for -position vlves), when the flow is high enough so tht the pressure differentil from to reches minimum vlue of.5 r. ) For spools C, F, G, H,,, V, Z, S ) vi ck pressure vlue (not NS0) or ppropritely high flows 5) ype WEH 0...: 0 r ype H-WEH 0...: 35 r ) Suitle for NR nd FKM sels 7) Only suitle for FKM sels ) he clenliness clss stted for the components must e dhered too in hydrulic systems. Effective filtrtion prevents fults from occurring nd t the sme time increses the component service life. For the selection of filters see ctlogue sheets RE , RE nd RE Switching times (= from contct received t the pilot vlve up to strt of opening t the control lnd on the min vlve) Nominl size 0 C (~) nd DC (=) Control pressure r Voltge type ~ = ~ = ~ = ~ = Vlve switching time from the neutrl position to the switched position 3-position vlve ms position vlve ms Vlve switching time from the switched position to the neutrl position 3-position vlve ms position vlve ms Nominl size C (~) nd DC (=) Control pressure r Voltge type ~ = ~ = ~ = ~ = Vlve switching time from the neutrl position to the switched position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered 0 to ms to ms Vlve switching time from the switched position to the neutrl position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered 0 to or to 0 ms WEH /WH 3/ RE 75/0.03

14 echnicl dt (for pplictions outside these prmeters, plese consult us!) Switching times (= from contct received t the pilot vlve up to strt of opening t the control lnd on the min vlve) Nominl size 5 (type W.H ) C (~) nd DC (=) Control pressure r Voltge type ~ = ~ = ~ = ~ = Vlve switching time from the neutrl position to the switched position 3-position vlve, spring centered ms position vlve ms Vlve switching time from the switched position to the neutrl position 3-position vlve, spring centered ms position vlve ms Nominl size 5 (type W.H 5 ) C (~) nd DC (=) Control pressure r Voltge type ~ = ~ = ~ = ~ = Vlve switching time from the neutrl position to the switched position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered 0 to ms to ms Vlve switching time from the switched position to the neutrl position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered 0 to or to 0 ms Nominl size 3 C (~) nd DC (=) Control pressure r Voltge type ~ = ~ = ~ = Vlve switching time from the neutrl position to the switched position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered 0 to ms to ms Vlve switching time from the switched position to the neutrl position 3-position vlve, spring centered ms position vlve ms position vlve, pressure centered to 0 ms to 0 ms Free-flow cross-section in the neutrl position for spool types Q, V nd W Spool Q ; mm Spool V ; mm ; mm Spool W ; mm. 0 0 RE 75/0.03 / WEH /WH

15 Chrcteristic curves: type WEH 0 (mesured with HL, ϑ oil = 0 C ± 5 C) p-q V -chrcteristic curves ressure differentil in r Flow in L/min Spools Switched position Spools Neutrl position E,, D 5 F F 3 G, G, 7 H, C H 3 5 J, K 3 L 3 L 3 M Q, V, W, Z 3 5 R 3 U U erformnce limits: type WEH 0 (mesured with HL, ϑ oil = 0 C ± 5 C) - nd 3-position vlves Mximum flow q V in L/min Operting pressure p mx in r Spools E, J, L, M, Q, R, U, V, W, C, D, K, Z, H G, F, Generl: ttention! he switching power limits given re for pplictions feturing two flow directions (e. g. from to nd simultneous return flow from to ). Due to the flow forces ctive within the vlves, the permitted power limit for directionl vlves my e considerly less where there is only one direction of flow (e. g. from to nd port locked)! (lese consult us for pplictions of this kind!) he power limit for directionl vlves ws determined using solenoids t their operting temperture, 0% under voltge nd with no pre-loding of the tnk. WEH /WH 5/ RE 75/0.03

16 Chrcteristic curves: type WEH (mesured with HL, ϑ oil = 0 C ± 5 C) p-q V -chrcteristic curves ressure differentil in r Flow in L/min Spools Switched position E, D, 3 F 3 3 G, H, C, Q, V, Z 3 3 J, K, L 3 3 Spools Switched position M, W 3 R U 7 S erformnce limits: type WEH (mesured with HL, ϑ oil = 0 C ± 5 C) -position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl Spring offset in min vlve (t p St min = r) C, D, K,, Z externl Spring offset in min vlve ) C D, K Z externl hydrulic offset in min vlve HC, HD, HK, HZ, H For performnce limits see Generl on pge 3. ttention! ) If the stted flow vlues re exceeded then it is not possile to gurntee the return spring function if the pilot pressure fils! With n internl pilot oil supply nd due to the negtive overlp of the spools C, Z nd HC, HZ nd flows < 0 L/min ck pressure vlve must e fitted. 3-position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring-centered E, H, J, L, M, Q, U, W, R F, G, S V externl pressure-centered (t min. control pressure of r) ll spools ) ttention! When using /3-wy directionl vlve, with pressure centring of the control spool in the min vlve, which exceeds the stted performnce limits, higher pilot pressure is required. So for, e.g. with n operting pressure of p mx = 350 r nd flow of q V = 300 L/min, pilot pressure of r is required. he mximum flow for this vlve is only dependent on the p vlue which the system cn ccept. With n internl pilot oil supply nd due to the negtive overlp of the spools F, G, M, nd S ck pressure vlve must e fitted. ) he ck pressure vlve is not required for flows > 0 L/min for the V spool. RE 75/0.03 / WEH /WH

17 Chrcteristic curves: type WEH (mesured with HL, ϑ oil = 0 C ± 5 C) p-q V -chrcteristic curves 5 ressure differentil in r 0 Spool R Flow in L/min Spools Switched position Spools Neutrl position E, M,, Q, U, V F G, H, J, W 3 L R F G, H L 5 U erformnce limits: type WEH (mesured with HL, ϑ oil = 0 C ± 5 C) -position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl Spring offset in min vlve (t p St min = r / r) C, D, K,, Z externl Spring offset in min vlve ) C D, K Z externl hydrulic offset in min vlve HC, HD, HK, HZ, H HC../O HD../O HK../O HZ../O HC../OF HD../OF HK../OF HZ../OF position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring-centered E, J, L, M, Q, U, W, R H G F V ttention! ) If the stted flow vlues re exceeded then it is not possile to gurntee the return spring function if the pilot pressure fils! With n internl pilot oil supply nd due to the negtive overlp of the spools Z, HZ nd V nd flows < 0 L/min ck pressure vlve must e fitted. With n internl pilot oil supply nd due to the negtive overlp of the spools F, G, M, nd ck pressure vlve must e fitted. For performnce limits see Generl on pge3. WEH /WH 7/ RE 75/0.03

18 Chrcteristic curves: type WEH 5 (mesured with HL, ϑ oil = 0 C ± 5 C) ressure differentil in r 0 p-q V -chrcteristic curves Spool R Spool G centre position Spool centre position Spools Flow in L/min Switched position E 3 F 3 3 G 3 H 3 J, Q 3 5 Spools erformnce limits: type WEH 5 (mesured with HL, ϑ oil = 0 C ± 5 C) 500 Switched position L 3 3 M 5 R Spools Switched position U V 3 W 3 3 -position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring offset in min vlve (t p St min = 3 r) C, D, K,, Z externl spring offset in min vlve ) C D, K Z externl hydrulic offset in min vlve HC, HD, HK, HZ, H HC../O HD../O HK../O HZ../O HC../OF HD../OF HK../OF HZ../OF For performnce limits see Generl on pge 3. ttention! ) If the stted flow vlues re exceeded then it is not possile to gurntee the return spring function if the pilot pressure fils! 3-position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring-centered E, L, M, Q, U, W G, F H J V R externl pressure-centered (t min. control pressure of r) E, F, H, J, L, M, , Q, R, U, V, W G, externl pressure-centered (t control pressure > 30 r ) G, With n internl pilot oil supply nd due to the negtive overlp of the spools Z, HZ nd V nd flows < 0 L/min ck pressure vlve must e fitted. With n internl pilot oil supply nd due to the negtive overlp of the spools C, HC, F, H, nd ck pressure vlve must e fitted. RE 75/0.03 / WEH /WH

19 Chrcteristic curves: type WEH 3 (mesured with HL, ϑ oil = 0 C ± 5 C) p-q V -chrcteristic curves spools E, R nd W p-q V -chrcteristic curves spools G nd ressure differentil in r 0 ) ) ressure differentil in r Flow in L/min Flow in L/min p-q V -chrcteristic curves ll other spools ) Only for spool R ressure differentil in r 0 ) Not for spool R Flow in L/min erformnce limits: type WEH 3 (mesured with HL, ϑ oil = 0 C ± 5 C) -position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring offset in min vlve (t p St min = 0 r) C, D, K,, Z externl spring offset in min vlve ) C D, K Z externl hydrulic offset in min vlve HC, HD, HK, HZ, H For performnce limits see Generl on pge 3. ttention! ) If the stted flow vlues re exceeded then it is not possile to gurntee the return spring function if the pilot pressure fils! With n internl pilot oil supply nd due to the negtive overlp of the spools Z, HZ nd V nd flows < 0 L/min ck pressure vlve must e fitted. 3-position vlves mx. flow q V in L/min Operting pressure p mx in r Spools externl spring-centered E, J, L, M, Q, R, U, W G,, H, F, V externl pressure-centered (t min. control pressure of.5 r) ll spools ttention! When using /3-wy directionl vlve, with pressure centring of the control spool in the min vlve, which exceeds the stted performnce limits, higher pilot pressure is required. So for, e.g. with n operting pressure of p mx = 350 r nd flow of q V = 00 L/min pilot pressure of 5 r is required. he mximum flow for this vlve is only dependent on the p vlue which the system cn ccept. With n internl pilot oil supply nd due to the negtive overlp of the spools C, HC, F, G, H, nd ck pressure vlve must e fitted. WEH /WH 9/ RE 75/0.03

20 Unit dimensions: type WEH 0 (Dimensions in mm) g 05,.3 5, 3, Ø, Ø 5,5 7 30,5 5 5,5 5, , Supltes Without ports, : G 53/0 (G 3/) With ports, : G 535/0 (G 3/) G 53/0 (G ) to ctlogue sheet RE 5 05 nd Vlve fixing screws off M x 5 DIN 9-0.9, M = 5.5 Nm must e ordered seprtely. 0 0,0/00mm R mx Required surfce finish of the mting piece For items list see pge 3 RE 75/0.03 0/ WEH /WH

21 Unit dimensions: type WEH (Dimensions in mm) 05, 3. g ;. 3, Ø3 7 3, Ø Ø, Ø Ø, ,9 L ,, Supltes G 7/0 (G 3/) G 7/0 (M7 x ) G 7/0 (G ) G 7/0 (M33 x ) G 7/0 (flnge) to ctlogue sheet RE 5 05 nd Vlve fixing screws off M0 x 0 DIN 9-0.9, M = 75 Nm off M x 0 DIN 9-0.9, M = 5.5 Nm must e ordered seprtely. 0,0/00mm R mx Required surfce finish of the mting piece For items list see pge 3 WEH /WH / RE 75/0.03

22 Unit dimensions: type WEH (Dimensions in mm) 3. g ;. 3, Ø0 Ø 9 Ø ,5 0 Supltes G 50/0 (G 3/) G 5/0 (G ) G 5/0 (G / G 5/0 (G / to ctlogue sheet RE 5 05 nd Vlve fixing screws off M x 0 DIN 9-0.9, M = 30 Nm must e ordered seprtely. For items list see pge 3 0,0/00mm R mx Required surfce finish of the mting piece RE 75/0.03 / WEH /WH

23 Unit dimensions: type WEH 5 (Dimensions in mm) 3. g ,5 7,5 33 3,5 Ø0 53 Ø 9.; , Ø Supltes G 5/0 (G ) G 53/0 (G ), for vlves with pressure-centered neutrl position G 5/0 (G /) G 5/0 (flnge) G 5/0 (G /) to ctlogue sheet RE 5 05 nd Vlve fixing screws off M x 0 DIN 9-0.9, M = 30 Nm must e ordered seprtely. For items list see pge 3 0,0/00mm R mx Required surfce finish of the mting piece WEH /WH 3/ RE 75/0.03

24 Unit dimensions: type WEH 3 (Dimensions in mm) 3. g ;.,5, , Ø ,5 Ø33 Ø ,5 0,5 0 0, +0, ,5 90, Supltes G 57/0 (G /) G 57/0 (M x ) G 5/0 (flnge) to ctlogue sheet RE 5 00 nd Vlve fixing scrrews off M0 x 0 DIN 9-0.9, M = 30 Nm must e ordered seprtely. 0,0/00mm R mx For items list, see pge 3 Required surfce finish of the mting piece RE 75/0.03 / WEH /WH

25 Item description Min vlve ilot vlve type WE to ctlogue sheet RE 3 7. ilot vlve type WE D ( solenoid) for min vlves with spools C, D, K, Z spools HC, HD, HK, HZ ilot vlve type WE J ( solenoid ) for min vlve with spools E, F etc., spring return ilot vlve type WE M ( solenoid ) for min vlve with spools HE, HF etc., hydrulic spool return. ilot vlve type WE ( solenoid) for min vlve with spool spool H ilot vlve type WE J ( solenoid ) for min vlve with spools E, F etc., spring return ilot vlve type WE M ( solenoid ) for min vlve with spools HE, HF etc., hydrulic spool return.3 ilot vlve type WE J ( solenoids) for min vlves with 3-positions, spring-centered ilot vlve type WE M ( solenoids) for min vlves with 3-positions, pressure-centered 3. Solenoid 3. Solenoid Hnd override N, optionl he hnd override cn only e operted up to tnk pressure of up to pprox. 50 r. ke cre not to dmge the hnd override ore! 5 Solenoid without hnd override Solenoid with hnd override 7 Height of the inter-connecting plte for hydrulic opertion (type WH ) Switching time djustment (/F), optionl 9 ressure reducing vlve, optionl 0 Mchined vlve mounting surfce, position of ports Nme plte for the pilot vlve Nme plte for the entire vlve 3 R-rings/O-rings Spce required to remove the plug-in connector 5 -position vlves with spring offset in min vlve (C, D, K, Z) -position vlves with spring offset in min vlve () 7 3-position vlves, spring centered; -position vlves with hydrulic offset in the min vlve 3-position vlves, pressure-centered 9 Locting pin orts,, ) ype,,, ),, L ) W.H 0 R-ring R-ring 3 x. x. x. x.7 W.H R-ring R-ring O-ring.53 x.3 x. 0 x x x.5 W.H R-ring R-ring O-ring 7. x. x 3 9 x 3 x 3 7 x 3 W.H 5 R-ring R-ring O-ring 7. x. x 3 9 x 3 x 3 7 x 3 W.H 3 R-ring R-ring O-ring.5 x 3 x 3 9 x 3 x 3 x 3 ) ck pressure vlve,5 (not for NS0) ) Without ck pressure vlve WEH /WH 5/ RE 75/0.03

26 Switching time djustment, pressure reducing vlve, ck pressure vlve Switching time djustment In order to influence the switching time of the min vlve () doule throttle check vlve () (type ZFS to ctlogue sheet RE 7 50) hs to e fitted. Conversion from meter-in (3) to meter-out control (): Remove the pilot vlve (5) leve the sel ring support plte () in plce, rotte the throttle vlve () out its longitudinl xis nd refit it, replce the pilot vlve (5). ightening torque of the screws (7) M = 9 Nm. ressure reducing vlve D3 he pressure reducing vlve () must e used it the pilot pressure is higher thn 50 r (for type WEH : 0 r). he secondry pressure is held constnt t 5 r. ttention! When using pressure reducing vlve D3 (), throttle insert 0 must e instlled in the -chnnel of the pilot vlve. 3 ype WEH 0../ S or S ightening torque of screws (7) M = 9 Nm. ck pressure vlve (not for NS 0) In vlves with zero pressure circultion nd internl pilot oil supply, ck pressure vlve (9) must e instlled in the -chnnel of the min vlve to uild up the minimun pilot pressure. ype WEH 0../ /..D3 he pressure differentil of the ck pressure vlve must e dded to the pressure differentil of the min vlve (see chrcteristic curves) in order to determine the cutl vlue. he opening pressure of this vlve is pprox..5 r. Min vlve Suplte 9 Mreril No. ype,5 ype W.H ype W.H ype W.H 5 ype W.H 3 R90030 R R R ressure differentil in r p q V chrcteristic curves (mesured with HL, ϑ oil = 0 C ± 5 C) osch Rexroth G Industril Hydrulics D-973 Lohr m Min Zum Eisengießer D-97 Lohr m Min elefon / -0 elefx / -3 5 elex 9-0 emil documenttion@oschrexroth.de Internet Flow in L/min osch Rexroth Limited Cromwell Rod, St Neots, Cms, E9 ES el: 0 0/ 3 5 Fx: 0 0/ 90 5 emil: info@oschrexroth.co.uk NS NS 5 (type W.H 5./ ) 3 NS 5 (type W.H.7/ ) NS 3 he dt specified ove only serves to descrie the product. No sttements concerning certin condition or suitility for certin ppliction cn e derived from our informtion. he detils stted do not relese you from the responsiility for crrying out your own ssessment nd verifiction. It must e rememered tht our products re suject to nturl process of wer nd geing. RE 75/0.03 / WEH /WH