Directional spool valves, pilot-operated, with hydraulic or electro-hydraulic actuation

Transcription

1 Directionl spool vlves, pilot-operted, with hydrulic or electro-hydrulic ctution WEH nd WH RE Edition: Replces: Size Component series 4; 6; 7 Mximum operting pressure 350r [5076psi] Mximum flow 1100 l/min [290 US gpm] H Fetures 4/3-, 4/2- or 3/2-wy version ypes of ctution (internl or externl pilot control): Electro-hydrulic (type WEH) Hydrulic (type WH) For suplte mounting orting pttern ccording to ISO 4401 nd NF R2 Spring or pressure centering, spring end position or hydrulic end position Wet-pin DC or C solenoids, optionl Electricl connection s individul or centrl connection Optionl versions: Mnul override Switching time djustment relod vlve in chnnel of the min vlve Stroke setting nd/or spool position monitoring Contents Fetures 1 Ordering code 2 4 Symols Function, section ilot oil supply echnicl dt Chrcteristic curves, performnce limits Dimensions Stroke setting, mounting options 36, 37 Switching time djustment 38 ressure reducing vlve "D3" 38 relod vlve 39 roject plnning informtion 40 Further informtion 40 RE 24751, edition: , osch Rexroth G

2 2/40 WEH; WH Directionl spool vlve Ordering code / / * 01 Up to 280 r no code Up to 350 r H 02 3-wy version 3 4-wy version 4 ypes of ctution 03 Electro-hydrulic WEH Size Hydrulic 04 NG10 10 NG16 16 NG25 (version "W.H 22") 22 NG25 (version "W.H 25") 25 NG32 32 Spool return in the min vlve 05 y mens of springs no code Hydrulic 1) 06 For symols, see pge 5 nd 6 07 Component series (40 49: unchnged instlltion nd connection dimension) NG10 4 Component series (60 69: unchnged instlltion nd connection dimension) NG25 ("W.H 25") nd NG32 Component series (70 79: unchnged instlltion nd connection dimension) NG16 (from series 72) nd NG25 ("W.H 22") Control spool return in the pilot control vlve with 2 spool positions nd 2 solenoids (only possile with symols C, D, K, Z nd hydrulic control spool return in the min vlve) 08 With spring return no code Without spring return O Without spring return with detent 2) OF ilot control vlve (2) 09 High-power vlve (dt sheet 23178) 6E 10 Direct voltge 24 V 2) G24 lternting voltge 230 V 50/60 Hz 2) W230 For other voltges, frequencies nd electric dt, see dt sheet Without mnul override no code With mnul override N With conceled mnul override N9 ilot oil flow 12 Externl pilot oil supply, externl pilot oil return 3) no code Internl pilot oil supply, externl pilot oil return 3; 4) E Internl pilot oil supply, internl pilot oil return 4) E Externl pilot oil supply, internl pilot oil return 3) (For type WH... only "no code"; version "E" nd "" with 3-spool position vlve, pressure-centered only possile if p pilot 2 x p tnk + p pilot min!) WH H 6 7 osch Rexroth G, RE 24751, edition:

3 Directionl spool vlve WEH; WH 3/40 Ordering code / / * Switching time djustment 13 Without switching time djustment no code Switching time djustment s supply control Switching time djustment s dischrge control S S2 Corrosion resistnce (outside) 14 None (vlve housing primed) no code Improved corrosion protection (240 h slt spry test ccording to EN ISO 9227) J3 Electricl connection 2) 15 Individul connection Without mting connector; connector DIN EN K4 6) For further electricl connections, see dt sheet nd Spool position monitoring 16 Without position switch no code Monitored spool position "" Monitored spool position "" Monitored spool position "" nd "" Monitored rest position QMG24 QMG24 QMG24 QM0G24 For more informtion, see dt sheet Stroke setting 17 For ordering code, see pge 36 nd 37 hrottle insert 2) 18 Without throttle insert no code hrottle Ø 0.8 mm [ inch] hrottle Ø 1.0 mm [ inch] hrottle Ø 1.2 mm [ inch] hrottle Ø 1.5 mm [ inch] hrottle Ø 2.0 mm [ inch] hrottle Ø 2.5 mm [ inch] relod vlve (not for NG10) 2) 19 Without prelod vlve no code With prelod vlve (p c = 4.5 r [65 psi]) 4,5 20 Without pressure reducing vlve no code With pressure reducing vlve D3 5) Sel mteril 21 NR sels no code FKM sels V Oserve comptiility of sels with hydrulic fluid used. (other sels on request) 22 For further informtion, see the plin text * p pilot p pilot min p tnk p c = pilot pressure = minimum pilot pressure = tnk pressure = crcking pressure Explntion of the footnotes, see pge 4. RE 24751, edition: , osch Rexroth G

4 4/40 WEH; WH Directionl spool vlve Ordering code 1) 2 spool positions (hydrulic end position): only symols C, D, K, Z, 3 switching positions (hydruliclly centered): only NG16, NG25 ("4W.H 25") nd NG32 2) Only with electro-hydrulic ctution (type WEH) 3) ilot oil supply or return externl: he mximum dmissile operting prmeters of the pilot control vlve must e oserved (see dt sheet 23178)! Minimum pilot pressure: plese oserve pge 16! Mximum pilot pressure: plese oserve pge 16! 4) ilot oil supply internl (version "E" nd "E"): Minimum pilot pressure: plese oserve pge 16! Mximum pilot pressure: plese oserve pge 16! With higher pilot pressure, use of pressure reducing vlve "D3" is required (if it is not used pilot pressure = operting pressure t the port!). In order to prevent indmissily high pressure peks, "10" throttle insert hs to e provided in port of the pilot control vlve (see pge 14). In connection with version "H", the pressure reducing vlve "D3" is lso required. 5) Only in connection with the "10" throttle insert 6) Mting connectors, seprte order, see dt sheet osch Rexroth G, RE 24751, edition:

5 Directionl spool vlve WEH; WH 5/40 Symols: 2 spool positions = 1) = 1) = C = = D = K = Z 1) Only for NG10 nd 25 ("4W.H 22") with 3/2-wy version; if operting pressure > tnk pressure, port is to e used s lekge port! 2) Exmple: Symol E with ctuting side "" ordering code..e.. 3) Symol S only for NG16 Ordering code ype of ctution Symol Spool return ype WH (hydrulic) ype WEH (electro-hydrulic)../..,, 1), C, D, K, Z..H../..,,..H../O..H../OF 1),../..,,..H../.. RE 24751, edition: , osch Rexroth G

6 6/40 WEH; WH Directionl spool vlve Symols: 3 spool positions = E 2) = Q = F = R = G = S 3) = H = = J = L = M = U = V = W = Explntion of the footnotes, see pge 5. Ordering code ype of ctution Symol ctuting side Spool return ype WH (hydrulic) ype WEH (electro-hydrulic)../.., 0, 0. 0 E, F, G, H, J, L, M,, Q, R, S,, U, V, W. 0..H../.., 0, 0 H. 0 H. 0 osch Rexroth G, RE 24751, edition:

7 Directionl spool vlve WEH; WH 7/40 RE 24751, edition: , osch Rexroth G Vlve with spring end position Vlve with hydrulic end position = externl; = externl ype WEH /.. ype WEH. H../... ype WEH. H../O... ype WEH. H../OF...,,,,,,,, = internl; = externl ype WEH / E ype WEH. H../ E ype WEH. H../O E ype WEH. H../OF E,,,,,,,, = internl; = internl ype WEH / E ype WEH. H../ E ype WEH. H../O E ype WEH. H../OF E,,,,,,,, Symols for vlves with 2 spool positions

8 8/40 WEH; WH Directionl spool vlve Symols for vlves with 2 spool positions Vlve with spring end position Vlve with hydrulic end position ype WEH / ype WEH. H../ ype WEH. H../O ype WEH. H../OF = externl; = internl,,,,,,,, Symols for vlves with 3 spool positions Vlve with spring-centered zero position ype WEH / Vlve with pressure-centered zero position only NG16, 25 ("W.H 25") nd 32 ype WEH. H../, 0, 0,, = externl; = externl L 0 0 L ype WEH / E ype WEH. H../ E = internl; = externl 0,, 0 0,, L 0 L osch Rexroth G, RE 24751, edition:

9 Directionl spool vlve WEH; WH 9/40 Symols for vlves with 3 spool positions Vlve with spring-centered zero position ype WEH / E 0,, Vlve with pressure-centered zero position only NG16, 25 ("W.H 25") nd 32 ype WEH. H../ E 0,, = internl; = internl L 0 0 L ype WEH / 0,, ype WEH. H../ 0,, = externl; = internl L 0 0 L Notice: 3-spool position vlves, pressure-centered, preferly with externl pilot oil supply nd/or return ("no code", "E") For preconditions for internl pilot oil supply nd/or return ("E", ""), see pge 4 nd 15. RE 24751, edition: , osch Rexroth G

10 10/40 WEH; WH Directionl spool vlve Function, section: ype WEH Directionl vlves type WEH he vlve type WEH is directionl spool vlve with electro-hydrulic ctution. It controls the strt, stop nd direction of flow. he directionl vlve siclly consists of the min vlve with housing (1), the min control spool (2), one or two return springs (3.1) nd (3.2), s well s the pilot control vlve (4) with one or two solenoids "" (5.1) nd/or "" (5.2). he min control spool (2) in the min vlve is held in the zero or initil position y the springs or y mens of pressuriztion. In the initil position, the two spring chmers (6) nd (8) re connected with the tnk in depressurized form vi the pilot control vlve (4). Vi the control line (7), the pilot control vlve is supplied with pilot oil. Supply cn e implemented internlly or externlly (externlly vi port ). Upon ctution of the pilot control vlve, e.g. solenoid "", the pilot control spool (10) is moved to the left nd thus, the spring chmer (8) is pressurized with pilot pressure. he spring chmer (6) remins depressurized. he pilot pressure cts on the left side of the min control spool (2) nd moves it ginst the spring (3.1). his connects port with nd with in the min vlve. On switching off of solenoid, the pilot control spool (10) returns to its initil position (except impulse spool). he spring chmer (8) is unloded to the tnk. he pilot oil return is implemented internlly (vi chnnel ) or externlly (vi chnnel ). n optionl mnul override (9) llows for moving of the pilot control spool (10) without solenoid energiztion. Notices: he return springs (3.1) nd (3.2) in the spring chmers (6) nd (8) hold the min control spool (2) in centrl position without pilot pressure even with, for exmple, verticl vlve positioning. Due to the design principle, internl lekge is inherent to the vlves, which my increse over the life cycle. For pilot oil supply, see pge 13 nd 14. osch Rexroth G, RE 24751, edition:

11 Directionl spool vlve WEH; WH 11/40 Function, section: ype WH Directionl vlves type WH Vlve type WH is directionl spool vlve with hydrulic ctution. It controls the strt, stop nd direction of flow. he directionl vlve siclly consists of the vlve housing (1), the min control spool (2), one or two return springs (3.1) nd (3.2) t vlves with spring return or spring centering s well s the diversion plte (11). he min control spool (2) is ctuted directly y pressuriztion. he min control spool (2) is held in zero or initil position y springs or pressuriztion. ilot oil supply nd return re externl (see pge 13). 4/3 directionl vlve with spring centering of the control spool With this version, the min control spool (2) is held in zero position y two return springs (3.1) nd (3.2). he two spring chmers (6) nd (8) re connected to ports nd vi the diversion plte (11). With pilot pressure loding of one of the two front sides of the min control spool (2), the spool is moved to the switching position. In the vlve, the required ports re connected in this wy. he spring on the opposite side returns the spool to the zero or initil position t pressure relief of the pressurized control spool re. For pilot oil supply, see pge 13 nd 14. RE 24751, edition: , osch Rexroth G

12 12/40 WEH; WH Directionl spool vlve Function, section: ype WEH H L 4/3 directionl vlve with pressure centering of the min control spool, type WEH H he min control spool (2) in the min vlve is kept in the zero position y pressuriztion of the two front fces. One centering ush (12) rests on the housing nd fixes the control spool position. y pressure relief of one front fce, the min control spool (2) is moved to the switching position. he unloded control spool fce displces the returning pilot oil into chnnel (externl) vi the pilot control vlve. Notices: he springs (3.1) nd (3.2) do not hve return function in this version. hey hold the min control spool (2) in centrl position in the depressurized condition nd with horizontl instlltion. osch Rexroth G, RE 24751, edition:

13 Directionl spool vlve WEH; WH 13/40 ilot oil supply (schemtic illustrtion) NG10 NG NG25 ("W.H 22") NG25 ("W.H 25") NG lug screw M6 ccording to DIN 906, wrench size 3 pilot oil return 2 lug screw M6 ccording to DIN 906, wrench size 3 pilot oil supply 9 lug screw M12 x 1.5 ccording DIN 906, wrench size 6 pilot oil supply ilot oil supply externl: 2, 3 closed internl: 2, 3 open ilot oil return externl: 1 closed internl: 1 open Further explntions on pge 14. RE 24751, edition: , osch Rexroth G

14 14/40 WEH; WH Directionl spool vlve ilot oil supply ype WH he pilot oil supply nd return is implemented externlly vi chnnel nd. ype WEH... he pilot oil supply is implemented externlly - vi chnnel - from seprte pressure supply. he pilot oil return is implemented externlly - vi chnnel - into the tnk. hrottle insert Use of the throttle insert (5) is necessry if the pilot oil supply in chnnel of the pilot control vlve is to e limited (see elow). he throttle insert (5) is inserted in chnnel of the pilot control vlve. 3 ype WEH E he pilot oil supply is implemented internlly from chnnel of the min vlve. (see pge 15, footnotes 5) nd 6) ) he pilot oil return is implemented externlly - vi chnnel - into the tnk. In the suplte, port is closed. 5 4 ype WEH E he pilot oil supply is implemented internlly from chnnel of the min vlve. he pilot oil return is implemented internlly - vi chnnel - into the tnk. In the suplte, ports nd re closed. ype WEH he pilot oil supply is implemented externlly - vi chnnel - from seprte pressure supply. he pilot oil return is implemented internlly - vi chnnel - into the tnk. In the suplte, port is closed. Notices: he modifiction of the pilot oil supply my only e performed y uthorized specilists or t the fctory! ilot oil supply or return externl: he mximum dmissile operting prmeters of the pilot control vlve must e oserved (see dt sheet 23178)! Mximum pilot pressure: plese oserve pge 16! ilot oil supply internl (version "E" nd "E"): Minimum pilot pressure: plese oserve pge 15! In order to prevent indmissily high pressure peks, "10" throttle insert hs to e provided in port of the pilot control vlve (see ove). In connection with version "H", the pressure reducing vlve "D3" (see pge 38) is lso required. 3 ilot control vlve 4 Min vlve 5 hrottle insert osch Rexroth G, RE 24751, edition:

15 Directionl spool vlve WEH; WH 15/40 echnicl dt (For ppliction outside these vlues, plese consult us!) generl Sizes NG "W.H 22" "W.H 25" Weight, pprox. Vlve with one solenoid kg [ls] 6.4 [14.1] 8.5 [18.7] 11.5 [25.3] 17.6 [38.8] 17.6 [38.8] Vlve with two solenoids, spring-centered kg [ls] 6.8 [15.0] 8.9 [19.6] 11.9 [26.2] 19.0 [41.9] 41.0 [90.4] Vlve with two solenoids, pressure-centered kg [ls] 6.8 [15.0] 8.9 [19.6] 11.9 [26.2] 19.0 [41.9] 41.0 [90.4] Vlve witch hydrulic ctution (type WH...) kg [ls] 5.5 [12.1] 7.3 [16.1] 10.5 [23.1] 16.5 [36.4] 39.5 [87.1] Switching time djustment "S" nd "S2" kg [ls] 0.8 [1.8] 0.8 [1.8] 0.8 [1.8] 0.8 [1.8] 0.8 [1.8] ressure reducing vlve "D3" kg [ls] 0.4 [0.9] 0.4 [0.9] 0.4 [0.9] 0.4 [0.9] 0.4 [0.9] Instlltion position ny; horizontl with vlves with hydrulic control spool return "H" nd symol,, C, D, K, Z,. With suspended instlltion, higher sensitivity to contmintion horizontl is recommended. mient temperture rnge Stndrd version C [ F] [ ] (NR sels) [ ] (FKM sels) Version for HFC hydrulic fluid C [ F] [ ] Storge temperture rnge C [ F] [ ] Surfce protection (vlve ody) Coting, lyer thickness mx. 100 µm MF d vlues ccording to EN ISO ers 100 (type WEH), 150 (type WH) (for further detils, see dt sheet 08012) hydrulic Mximum operting pressure ort,, ype W.H r [psi] 280 [4061] 280 [4061] 280 [4061] 280 [4061] 280 [4061] ort Externl pilot oil return Internl pilot oil return 1) ype H-W.H r [psi] 350 [5076] ype W.H r [psi] 280 [4061] 350 [5076] 350 [5076] 350 [5076] 350 [5076] 250 [3626] 250 [3626] 250 [3626] 250 [3626] ype H-W.H 315 [4568] 250 [3626] 250 [3626] 250 [3626] 250 [3626] ype H-WEH, WEH r [psi] 210 [3046] with direct voltge 160 [2320] with lternting voltge ort Externl pilot oil return ype H-WEH, WEH r [psi] 210 [3046] with direct voltge 160 [2320] with lternting voltge ype WH, H-WH r [psi] 250 [3626] 250 [3626] 210 [3046] 250 [3626] 250 [3626] Hydrulic fluid see tle on pge 15 Hydrulic fluid temperture rnge (t the vlve working ports) 3) C [ F] [ ] (NR sels) [ ] (FKM sels) [ ] (HFC hydrulic fluid) Viscosity rnge mm 2 /s [SUS] [ ] Mximum dmissile degree of contmintion of the hydrulic fluid Clss 20/18/15 2) Clenliness clss ccording to ISO 4406 (c) 1) s 3-spool position vlve, pressure-centered only possile if p pilot 2 x p tnk + p pilot min. 2) he clenliness clsses specified for the components must e dhered to in hydrulic systems. Effective filtrtion prevents fults nd simultneously increses the life cycle of the components. For selecting the filters, see 3) If type WH is used in potentilly explosion-proof res, see dt sheet RE 24751, edition: , osch Rexroth G

16 16/40 WEH; WH Directionl spool vlve echnicl dt (For pplictions outside these prmeters, plese consult us!) hydrulic Size NG "W.H 22" Mximum pilot pressure 4) r [psi] 250 [3626] Minimum pilot pressure Externl pilot oil supply (ll symols), internl pilot oil supply (only symols D, K, E, J, L, M, Q, R, U, W) 250 [3626] 210 [3046] 25 "W.H 25" 250 [3626] [3626] 3-spool position vlve, spring-centered ype H-.W.H r [psi] 12 [174] 14 [203] 12.5 [181] 13 [188] 8.5 [123] ype W.H... r [psi] 12 [174] 14 [203] 10.5 [152] 13 [188] 8.5 [123] 3-spool position vlve, pressure-centered r [psi] 14 [203] 18 [261] 8.5 [123] 2-spool position vlve with spring end ype H-W.H... r [psi] 10 [145] 14 [203] 14 [203] 13 [188] 10 [145] position ype W.H... r [psi] 10 [145] 14 [203] 11 [159] 13 [188] 10 [145] 2-spool position vlve with hydrulic end position r [psi] 7 [101] 14 [203] 8 [116] 8 [116] 5 [72] Internl pilot oil supply (only type WEH) r [psi] 7.5 [109] 4.5 [65] 7) 4.5 [65] 7) 4.5 [65] 7) 4.5 [65] 7) (with symols C, F, G, H,,, V, Z, S 5) ) 6) Free flow cross-sections in zero position with symols Q, V nd W Symol Q ; mm 2 [inch 2 ] 13 [0.02] 32 [0.05] 78 [0.121] 83 [0.129] 78 [0.121] Symol V ; mm 2 [inch 2 ] 13 [0.02] 32 [0.05] 73 [0.113] 83 [0.129] 73 [0.113] ; mm 2 [inch 2 ] 13 [0.02] 32 [0.05] 84 [0.13] 83 [0.129] 84 [0.13] Symol W ; mm 2 [inch 2 ] 2.4 [0.004] 6 [0.009] 10 [0.015] 14 [0.022] 20 [0.031] 4) Internl pilot oil supply: With higher pilot pressure, use of pressure reducing vlve "D3" is required (if it is not used pilot pressure = operting pressure t the port). In connection with version "H", the pressure reducing vlve "D3" is lso required. Externl pilot oil supply: In connection with version "H-", complince with the mximum pilot pressure must e ensured y pproprite mesures (e. g. protection of the seprte pilot oil circuit y mens of pressure relief vlve)! 5) Symol S only for NG16 6) For symols C, F, G, H,,, V, Z, n internl pilot oil supply is only possile if the flow from to in the centrl position (for 3-spool position vlve) or while crossing the centrl position (for 2-spool position vlve) is so lrge tht the pressure differentil of to reches vlue of t lest 7.5 r [109 psi] nd the pilot oil return is implemented externlly. 7) For symols C, F, G, J, H,,, V, Z, S 5) y mens of prelod vlve (not NG10) or correspondingly high flow. (Determintion of the required flow, see "relod vlve" chrcteristic curves on pge 39.) For NG10, check vlve with crcking pressure of 7.5 r [109 psi] is to e provided in the return line to the tnk. he pilot oil return must e implemented externlly. osch Rexroth G, RE 24751, edition:

17 Directionl spool vlve WEH; WH 17/40 echnicl dt (For ppliction outside these vlues, plese consult us!) hydrulic Size NG "W.H 22" ilot volume for switching process 3-spool position vlve, spring-centered cm 3 [inch 3 ] 2.04 [0.124] 2-spool position vlve cm 3 [inch 3 ] 4.08 [0.249] 3-spool position vlve, pressure-centered from zero position in switching position "" from switching position "" in zero position from zero position in switching position "" from switching position "" in zero position 5.72 [0.349] [0.699] ype WH cm 3 [inch 3 ] 2.83 [0.173] ype WEH cm 3 [inch 3 ] 2.83 [0.173] ype WH cm 3 [inch 3 ] 5.72 [0.349] 7.64 [0.466] [0.932] 25 "W.H 25" 14.2 [0.866] 28.4 [1.733] 7.15 [0.436] 7.15 [0.436] [0.865] [1.794] 58.8 [3.588] 14.4 [0.879] 14.4 [0.879] 29.4 [1.794] ype WEH cm 3 [inch 3 ] 2.9 [0.177] 7.0 [0.427] 15.1 [0.921] ype WH cm 3 [inch 3 ] 5.72 [0.349] ype WEH cm 3 [inch 3 ] 5.72 [0.349] ype WH cm 3 [inch 3 ] 8.55 [0.522] ype WEH cm 3 [inch 3 ] 2.83 [0.173] [0.865] [0.863] [1.213] 5.73 [0.349] 29.4 [1.794] 29.4 [1.794] 43.8 [2.673] 14.4 [0.879] ilot flow for shortest switching time, pprox. l/min [US gpm] 35 [9.2] 35 [9.2] 35 [9.2] 35 [9.2] 45 [11.9] Hydrulic fluid Clssifiction Suitle seling Stndrds Dt sheet mterils Minerl oils HL, HL, HLD, HVL, HVLD NR, FKM DIN io-degrdle 1) Insolule in wter HEG FKM ISO HEES FKM Solule in wter HEG FKM ISO Flme-resistnt Wter-free HFDU (glycol se) FKM HFDU (ester se) 1) FKM ISO Contining wter 1) HFC (Fuchs Hydrotherm 46M, NR etrofer Ultr Sfe 620) ISO Importnt notice on hydrulic fluids: Flme-resistnt contining wter: For more informtion nd dt on the use of other hydrulic Mximum pressure differentil per control edge 50 r fluids, plese refer to the dt sheets ove or contct us. ressure pre-loding t the tnk port >20% of the pressure here my e limittions regrding the technicl vlve dt differentil, otherwise incresed cvittion erosion (temperture, pressure rnge, life cycle, mintennce intervls, Life cycle s compred to opertion with minerl oil HL, HL etc.) % he ignition temperture of the hydrulic fluid used must e 50 K io-degrdle nd flme-resistnt: If these hydrulic fluids re higher thn the mximum solenoid surfce temperture. used, smll mounts of dissolved zinc my get into the hydrulic system. ( mg zinc per pole tue). 1) Not recommended for corrosion-protected version "J3" (contins zinc) RE 24751, edition: , osch Rexroth G

18 18/40 WEH; WH Directionl spool vlve Switching times ilot pressure r [psi] 70 [1015] 210 [3046] 250 [3626] Spring NG10 NG16 NG25 ("4W.H 22") NG25 ("4W.H 25") NG32 Without throttle insert ms With throttle insert ms Without throttle insert ms With throttle insert ms Without throttle insert ms With throttle insert ms Without throttle insert ms With throttle insert ms Without throttle insert ms With throttle insert ms ON OFF Notices: Switching times = Contcting t the pilot control vlve until strt of opening of the control edge in the min vlve nd chnge in the control spool stroke y 95%) he switching times re mesured ccording to ISO 6403 with HL46, ϑ oil = 40 C ± 5 C [104 F ±9 F]. With different oil tempertures, vritions re possile! he switching times were determined using DC solenoids. hey decrese y pprox. 20 ms if C solenoids re used. he shut-off of the solenoids cretes voltge peks, which cn e reduced y the use of suitle diodes. he switching times increse y pprox. 30 ms if the pressure reducing vlve "D3" is used. he switching times hve een determined under idel conditions nd my differ in the system, depending on the ppliction conditions. osch Rexroth G, RE 24751, edition:

19 Directionl spool vlve WEH; WH 19/40 Chrcteristic curves: NG10 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) ressure differentil in r [psi] p-q V chrcteristic curves Flow in l/min [US gpm] Symol Spool position Zero position 1) 1) E,, D, Q, V, W, Z F G, H, C J, K L M R U , 1 1 1) he pressure differentil refers to the use of port. If port 1 is dditionlly used, the pressure differentil my e lower. If only port 1 is used, the reltions nd my e reversed. erformnce limits: NG10 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) 2-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring end position in the min vlve 1) (with p pilot min = 12 r [174 psi]) C, D, K,, Z 160 [42] 160 [42] 160 [42] 160 [42] 160 [42] externl hydrulic end position in the min vlve HC, HD, HK, HZ, H 160 [42] 160 [42] 160 [42] 160 [42] 160 [42] 1) If the pilot pressure fils, the function of the return spring is no longer gurnteed with the specified flow vlues! 3-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring-centered E, J, L, M, Q, 160 [42] 160 [42] 160 [42] 160 [42] 160 [42] U, V, W, R F, 160 [42] 120 [32] 100 [26] 90 [20] 90 [20] G, 160 [42] 160 [42] 160 [42] 130 [34] 120 [32] H 160 [42] 160 [42] 120 [32] 110 [29] 100 [26] Importnt notices see pge 28. RE 24751, edition: , osch Rexroth G

20 20/40 WEH; WH Directionl spool vlve Chrcteristic curves: NG16 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) ressure differentil in r [psi] [406] [250] [300] [250] [200] [150] [100] [50] [0] p-q V chrcteristic curves [0] [5] [10] [15] [20] [25] [30] [35] [40] [45] [50] [55] [60] [65] [70] [75] [79.2] Flow in l/min [US gpm] Symol Spool position Zero position D, E, F G C, H K, J L M Symol Spool position Zero position Q R S U V, Z W osch Rexroth G, RE 24751, edition:

21 Directionl spool vlve WEH; WH 21/40 erformnce limits: NG16 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) 2-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring end position in the min vlve (with p pilot min = 12 r [174 psi]) C, D, K,, Z 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] externl spring end position in the min vlve 1) C 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] D, 300 [79] 270 [71] 260 [68] 250 [66] 230 [60] K 300 [79] 250 [66] 240 [63] 230 [60] 210 [55] Z 300 [79] 260 [68] 190 [50] 180 [47] 160 [42] externl hydrulic end position in the min vlve HC, HD, HK, HZ, H 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] 3-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring-centered E, H, J, 300 [79] 300 [79] 300 [79] 300 [79] 300 [79] L, M, Q, U, W, R F, 300 [79] 250 [66] 180 [47] 170 [45] 150 [39] G, 300 [79] 300 [79] 240 [63] 210 [55] 190 [50] S 300 [79] 300 [79] 300 [79] 250 [66] 220 [58] V 300 [79] 250 [66] 210 [55] 200 [53] 180 [47] externl pressure-centered (t minimum pilot pressure of 16 r [232 psi]) ll symols 300 [79] 300 [79] 300 [79] 2) 1) If the specified flow vlues re exceeded, the function of the return spring is no longer gurnteed if the pilot pressure fils! 2) With symol V, the pilot control vlve is not required for flows >160 l/min [42 US gpm]. Importnt notices see pge 28. RE 24751, edition: , osch Rexroth G

22 22/40 WEH; WH Directionl spool vlve Chrcteristic curves: NG25 ("W.H 22") (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) [290] [275] 20 p-q V chrcteristic curves 9 ressure differentil in r [psi] [250] [225] [200] [175] [150] [125] [100] [75] [50] [25] 2 [0] [0] [10] [20] [30] [40] [50] [60] [70] [80] [90] [100] [110] Flow in l/min [US gpm] Symol Spool position E, D J, Q, K M, W H, V, C, Z F G R L U Symol Zero position F 2 4 G, 9 H 3 L 7 U 6 J V, Z 8 osch Rexroth G, RE 24751, edition:

23 Directionl spool vlve WEH; WH 23/40 erformnce limits: NG25 ("W.H 22") (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) 2-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring end position in the min vlve (with p pilot min = 11 r / 14 r [159 / 203 psi]) C, D, K,, Z externl spring end position in the min vlve 1) C D, K Z 350 [92] 215 [57] 300 [79] 320 [84] 150 [39] 290 [76] 250 [66] 400 [105] 120 [32] 260 [68] externl hydrulic end position in the min vlve HC, HD, HK, HZ, H HC./O, HD./O, HK./O, HZ./O HC./OF, HD./ OF, HK./OF, HZ./OF 200 [53] 320 [84] 100 [26] 160 [42] 3-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring-centered E, J, L, M, Q, U, W, R H G 400 [105] F V 400 [105] 350 [92] 270 [71] 300 [79] 300 [79] 270 [71] 300 [79] 250 [66] 175 [46] 240 [63] 240 [63] 180 [47] 260 [68] 200 [53] 130 [34] 220 [58] 200 [53] 170 [45] 230 [61] 180 [47] 110 [29] 160 [42] 160 [42] 110 [29] 1) If the specified flow vlues re exceeded, the function of the return spring is no longer gurnteed if the pilot pressure fils! Importnt notices see pge 28. RE 24751, edition: , osch Rexroth G

24 24/40 WEH; WH Directionl spool vlve Chrcteristic curves: NG25 ("W.H 25") (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) ressure differentil in r [psi] p-q V chrcteristic curves Flow in l/min [US gpm] Symol Spool position Zero position 1) 1) E,, D F G, H C J K L M Q R U V Z W Symol R, spool position osch Rexroth G, RE 24751, edition:

25 Directionl spool vlve WEH; WH 25/40 erformnce limits: NG25 ("W.H 25") (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) 2-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring end position in the min vlve (with p pilot min = 13 r [188 psi]) C, D, K,, Z externl spring end position in the min vlve 1) C D, K Z 650 [172 ] 650 [172 ] 400 [105 ] 420 [111] 650 [172 ] 350 [92] 370 [98] 480 [127 ] externl hydrulic end position in the min vlve HC, HD, HK, HZ, H HC./O, HD./O, HK./O, HZ./O HC./OF, HD./ OF, HK./OF, HZ./OF 650 [172 ] 650 [172 ] 300 [79] 320 [84] 400 [105 ] 1) If the specified flow vlues re exceeded, the function of the return spring is no longer gurnteed if the pilot pressure fils! 3-spool position vlves q V mx in l/min [US gpm] Operting pressure p mx in r [psi] Symol 70 [1015] 140 [2030] 210 [3046] 280 [4061] 350 [5076] externl spring-centered E, L, M, Q, U, W G, 400 [105 ] F 650 [172 ] H J 650 [172 ] V 650 [172 ] R 400 [105 ] 550 [145] 650 [172 ] 550 [145] 550 [145] 400 [105 ] 430 [113] 550 [145] 650 [172 ] 430 [113] 400 [105 ] externl pressure-centered (t minimum pilot pressure of 18 r [261 psi]) E, F, H, J, L, M,, Q, R, U, V, W G, 400 [105 ] 400 [105 ] externl pressure-centered (with pilot pressure > 30 r [435 psi]) G, 400 [105 ] 400 [105 ] 330 [87] 400 [105 ] 600 [158 ] 330 [87] 350 [92] 650 [172 ] 400 [105 ] 650 [172 ] 400 [105 ] 300 [79] 360 [95] 520 [137 ] 300 [79] 310 [82] 580 [153 ] 650 [172 ] 400 [105 ] 650 [172 ] Importnt notices see pge 28. RE 24751, edition: , osch Rexroth G

26 26/40 WEH; WH Directionl spool vlve Chrcteristic curves: NG32 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) p-q V -chrcteristic curves Symol E, R nd W ressure differentil in r [psi] [261] [200] [150] [100] [50] Symol Spool position E R W [0] [0] [40] [80] [120] [160] [200] [240] [285] Flow in l/min [US gpm] ressure differentil in r [psi] [261] [200] [150] [100] [50] p-q V chrcteristic curves Symol G nd Symol Spool position G [0] [0] [40] [80] [120] [160] [200] [240] [285] Flow in l/min [US gpm] osch Rexroth G, RE 24751, edition:

27 Directionl spool vlve WEH; WH 27/40 erformnce limits: NG32 (mesured with HL46, ϑ Oil = 40 ±5 C [104 ±9 F]) 2-spool position vlves q V mx in l/min [US gpm] Symol 70 [1015] Operting pressure p mx in r [psi] 140 [2030] 210 [3046] externl spring end position in the min vlve (with p pilot min = 10 r [145 psi]) C, D, K,, Z 1100 [290] 1040 [275] 860 [227] 280 [4061] 750 [198] externl spring end position in the min vlve 1) C 1100 [290] D, 1100 [290] K 1100 [290] Z 1100 [290] 1040 [275] 1040 [275] 1040 [275] 1040 [275] 860 [227] 540 [142] 860 [227] 860 [227] 800 [211] 480 [127] 500 [132] [185] externl hydrulic end position in the min vlve HC, HD, HK, HZ, H 1100 [290] 1040 [275] 860 [227] 750 [198] 350 [5076] 680 [179] [185] 420 [111] 650 [172] 680 [179] 3-spool position vlves q V mx in l/min [US gpm] Symol 70 [1015] externl spring-centered E, J, L, M, Q, R, U, W 1100 [290] G,, H, F, 900 [238] V 1100 [290] Operting pressure p mx in r [psi] 140 [2030] 1040 [275] 900 [238] 1000 [264] 210 [3046] 860 [227] 800 [211] 680 [179] externl pressure-centered (t minimum pilot pressure of 8.5 r [123 psi]) ll symols 1100 [290] 1040 [275] 860 [227] 280 [4061] 750 [198] 650 [172] 500 [132] 750 [198] 350 [5076] 680 [179] 680 [179] 1) If the specified flow vlues re exceeded, the function of the return spring is no longer gurnteed if the pilot pressure fils! Importnt notices see pge 28. RE 24751, edition: , osch Rexroth G

28 28/40 WEH; WH Directionl spool vlve erformnce limits: importnt informtion Notice (pplies to ll sizes): he specified switching power limits pply to the use with two directions of flow (e. g. from to nd simultneous return flow from to t rtio of 1:1). Due to the flow forces cting within the vlves, the dmissile switching power limit my e considerly lower with only one direction of flow (e. g. from to while port is locked, with flow in the sme or in different directions)! In such cses of ppliction, plese consult us! he switching power limit ws estlished while the solenoids were t operting temperture, t 10% undervoltge, nd without tnk preloding. NG16 NG25 ("W.H 22") NG25 ("W.H 25") NG32 With pilot oil supply internl, prelod vlve hs to e used for flows < 160 l/min [42 US gpm] due to the negtive overlp of the symols C, Z nd HC, HZ. 4/3 directionl vlves with pressure centering of the control spool in the min vlve cn e used ove the indicted performnce limit. In this cse, higher pilot pressure is required (vlues see performnce limits of the corresponding size). With pilot oil supply internl, sufficient flow needs to e ensured due to the negtive overlp of symols F, G, H,, S nd (for determintion of the required flow, see "relod vlve" chrcteristic curves (pge 39). If the required flow is not reched, prelod vlve hs to e used (see pge 16). With pilot oil supply internl, prelod vlve hs to e used for flows < 180 l/min [47.5 US gpm] due to the negtive overlp of symols Z, HZ nd V. With pilot oil supply internl, sufficient flow needs to e ensured due to the negtive overlp of symols C, HC, F, G, H, nd (for determintion of the required flow, see "relod vlve" chrcteristic curves (pge 39). If the required flow is not reched, prelod vlve hs to e used (see pge 16). With pilot oil supply internl, prelod vlve hs to e used for flows < 180 l/min [47.5 US gpm] due to the negtive overlp of symols Z, HZ nd V. 4/3 directionl vlves with pressure centering of the control spool in the min vlve cn e used ove the indicted performnce limit. In this cse, higher pilot pressure is required (vlues see performnce limits of the corresponding size). With pilot oil supply internl, sufficient flow needs to e ensured due to the negtive overlp of symols C, HC, F, G, H, nd (for determintion of the required flow, see "relod vlve" chrcteristic curves (pge 39). If the required flow is not reched, prelod vlve hs to e used (see pge 16). With pilot oil supply internl, prelod vlve hs to e used for flows < 180 l/min [47.5 US gpm] due to the negtive overlp of symols Z, HZ nd V. 4/3 directionl vlves with pressure centering of the control spool in the min vlve cn e used ove the indicted performnce limit. In this cse, higher pilot pressure is required (vlues see performnce limits of the corresponding size). With pilot oil supply internl, sufficient flow needs to e ensured due to the negtive overlp of symols C, HC, F, G, H, nd (for determintion of the required flow, see "relod vlve" chrcteristic curves (pge 39). If the required flow is not reched, prelod vlve hs to e used (see pge 16). osch Rexroth G, RE 24751, edition:

29 Directionl spool vlve WEH; WH 29/40 Dimensions: NG10 (dimensions in mm [inch]) , , , ,5 13, F1 F4 F2 1 F3 0,01/100 [0.0004/4.0] Rzmx 4 Required surfce qulity of the vlve contct surfce Notice: he dimensions re nominl dimensions which re suject to tolernces. For item explntions nd supltes see pge 34. Vlve mounting screws see pge 35. RE 24751, edition: , osch Rexroth G

30 30/40 WEH; WH Directionl spool vlve Dimensions: NG16 (dimensions in mm [inch]) ; 2.2 3, , F1 L F5 F2 G F4 G2 F6 F3 For item explntions nd supltes see pge 34. Vlve mounting screws see pge 35. Notice: he dimensions re nominl dimensions which re suject to tolernces. 0,01/100 [0.0004/4.0] Rzmx 4 Required surfce qulity of the vlve contct surfce osch Rexroth G, RE 24751, edition:

31 Directionl spool vlve WEH; WH 31/40 Dimensions: NG25 ("W.H 22") (dimensions in mm [inch]) [8.11] [0.59] [4.33] 19 [0.75] 2.1; 2.2 3,5 [0.14] 14 [0.55] [0.78] [3.62] [1.57] [0.55] [7.60] 241[9.49] [0.157] 4 41 [1.61] 6 [Ø0.24] [Ø0.55] 20 [Ø0.79] [0.55] 17,5 [0.69] 180 [7.09] [4.61] F1 L 1) F5 G1 F2 [4.72] F4 G2 F6 F3 1) ort L only for vlves with pressurecentered zero position For item explntions nd supltes see pge 34. Vlve mounting screws see pge 35. Notice: he dimensions re nominl dimensions which re suject to tolernces. 0,01/100 [0.0004/4.0] Rzmx 4 Required surfce qulity of the vlve contct surfce RE 24751, edition: , osch Rexroth G

32 32/40 WEH; WH Directionl spool vlve Dimensions: NG25 ("W.H 25") (dimensions in mm [inch]) ; , , ,5 27, F1 L 1) F5 G1 F2 120 F4 G2 F6 F3 1) ort L only for vlves with pressurecentered zero position For item explntions nd supltes see pge 34. Vlve mounting screws see pge 35. Notice: he dimensions re nominl dimensions which re suject to tolernces. 0,01/100 [0.0004/4.0] Rzmx 4 Required surfce qulity of the vlve contct surfce osch Rexroth G, RE 24751, edition:

33 Directionl spool vlve WEH; WH 33/40 Dimensions: NG32 (dimensions in mm [inch]) [8.11] [0.59] [5.98] 19 [0.75] ; ,5 [0.85] 286,5 362 [14.25] 391 [15.39] 391 [15.39] 406 [15.98] 3,5 [0.14] 14 [0.55] [1.93] [Ø0.24] 19 [0.78] [3.62] [1.57] 4 [0.157] 0,2 +0,3 [ ] [Ø1.30] 22 [Ø0.87] 23 [0.91] 257 [10.12] [7.76] ,5 [0.81] F1 L F5 G1 F2 [7.87] F4 G2 F6 F3 For item explntions nd supltes see pge 34. Vlve mounting screws see pge 35. Notice: he dimensions re nominl dimensions which re suject to tolernces. 0,01/100 [0.0004/4.0] Rzmx 4 Required surfce qulity of the vlve contct surfce RE 24751, edition: , osch Rexroth G

34 34/40 WEH; WH Directionl spool vlve Dimensions 1 Min vlve 2 ilot control vlve type 4WE 6... (dt sheet 23178): 2.1 ilot control vlve type 4WE 6 D (1 solenoid) for min vlves with symols C, D, K, Z symols HC, HD, HK, HZ ilot control vlve type 4WE 6 J... (1 solenoid "") for min vlves with symols E, F, etc., spring return ilot control vlve type 4WE 6 M... (1 solenoid "") for min vlves with symols HE, HF, etc., hydrulic spool return 2.2 ilot control vlve type 4WE 6... (1 solenoid) for min vlves with symol symol H ilot control vlve type 4WE 6 J... (1 solenoid "") for min vlves with symols E, F, etc., spring return ilot control vlve type 4WE 6 M... (1 solenoid "") for min vlves with symols HE, HF, etc., hydrulic spool return 2.3 ilot control vlve type 4WE 6J (2 solenoids) for min vlves with 3 spool positions, spring-centered ilot control vlve type 4WE 6 M (2 solenoids) for min vlves with 3 spool positions, pressure-centered 3.1 Solenoid "" 3.2 Solenoid "" 4 Mnul override, "N", optionl ctution of the mnul override is only possile up to tnk pressure of pprox. 50 r. void dmge to the ore of the mnul override! (Specil tool for the opertion, seprte order, mteril no. R ). When the mnul override is locked, the opertion of the solenoid must e prevented! Simultneous ctution of the solenoids must e prevented. 5 Solenoid without mnul override 6 Solenoid with mnul override 7 Height of the diversion plte with hydrulic ctution (type WH...) 8 Switching time djustment (wrench size 6), optionl 9 ressure reducing vlve, optionl 10.1 Mchined vlve contct surfce; porting pttern ccording to ISO nd NF3.5.1 R2-D Mchined vlve contct surfce; porting pttern ccording to ISO nd NF3.5.1 R2-D Mchined vlve contct surfce; porting pttern ccording to ISO nd NF3.5.1 R2-D Mchined vlve contct surfce; porting pttern ccording to ISO nd NF3.5.1 R2-D10 11 Nme plte pilot control vlve 12 Nme plte complete vlve 13 Sel rings 14 Spce required for removing the mting connector 15 2-spool position vlves with spring end position in the min vlve (symols, C, D, K, Z) 16 2-spool position vlves with spring end position in the min vlve (symols, ) 17 3-spool position vlves, spring-centered; 2-spool position vlves with hydrulic end position in the min vlve 18 3-spool position vlves, pressure-centered 19 Locking pin Supltes (seprte order) with porting pttern ccording to ISO 4401 see dt sheet Vlve mounting screws see pge 35. osch Rexroth G, RE 24751, edition:

35 Directionl spool vlve WEH; WH 35/40 Dimensions Vlve mounting screws (seprte order) NG10: 4 metric hexgon socket hed cp screws ISO M6 x flZn-240h-L (friction coefficient µ totl = ); tightening torque M = 12.5 Nm [9.2 ft-ls] ±10%, mteril no. R hexgon socket hed cp screws UNC 1/4-20 UNC x 1 3/4" SM-574 on request NG16: 4 metric hexgon socket hed cp screws ISO M10 x flZn-240h-L (friction coefficient µ totl = ); tightening torque M = 58 Nm [42.8 ft-ls] ±10%, mteril no. R metric hexgon socket hed cp screws ISO M6 x flZn-240h-L (friction coefficient µ totl = ); tightening torque M = 12.5 Nm [9.2 ft-ls] ±10%, mteril no. R NG25: 6 metric hexgon socket hed cp screws ISO M12 x flZn-240h-L (friction coefficient µ totl = ); tightening torque M = 130 Nm [95.9 ft-ls] ±10%, mteril no. R hexgon socket hed cp screws UNC 1/2-13 UNC x 2 1/2" SM-574 on request NG32: 6 metric hexgon socket hed cp screws ISO M20 x flZn-240h-L (friction coefficient µ totl = ); tightening torque M = 430 Nm [317.2 ft-ls] ±10%, mteril no. R hexgon socket hed cp screws UNC 3/4-10 UNC x 3 1/4" SM-574 on request 4 hexgon socket hed cp screws UNC 3/8-16 UNC x 2 1/4" SM-574 on request 2 hexgon socket hed cp screws UNC 1/4-20 UNC x 2 1/4" SM-574 on request RE 24751, edition: , osch Rexroth G

36 36/40 WEH; WH Directionl spool vlve Stroke setting, mounting options (dimensions in mm [inch]) he stroke of the control spool is limited y the stroke setting (1). he control spool stroke is shortened y loosening the lock nut (2) nd clockwise rottion of the djustment spindle (3). he control chmer (4) must e depressurized for this. 5 1 L4 L NG L [0.26] [0.39] 25 ("W.H 22") 9.5 [0.37] 25 ("W.H 25") 12.5 [0.49] [0.59] More dimensions see elow nd pge djustment rnge NG10: 1 rottion = 1 mm [ inch] djustment trvel NG16 nd 32: 1 rottion = 1.5 mm [ inch] djustment trvel Stroke limittion on side L3 Stroke limittion on side L3 L1 L2 L3 L2 L1 L1 L3 L2 3-spool position vlve 1) spring-centered pressure-centered Mounting options Ordering code NG L1 L2 L3 L1 L2 L [3.54] 144 [5.67] 234 [9.21] [3.94] 200 [7.87] 300 [11.81] Stroke setting on vlve side nd ) 96 [3.77] 241 [9.49] 337 [13.27] 25 3) 123 [4.84] 276 [10.87] 399 [15.71] [5.24] 344 [13.54] 477 [18.78] [3.54] 106 [4.17] 196 [7.72] [3.94] 156 [6.14] 256 [10.08] Stroke setting on 11 vlve side 25 2) 96 [3.77] 193 [7.60] 289 [11.38] 25 3) 123 [4.84] 225 [8.86] 348 [13.70] [5.24] 287 [11.30] 420 [16.54] [2.05] 144 [5.67] 196 [7.72] [2.20] 200 [7.87] 256 [10.08] 81 [3.19] 200 [7.87] 281 [11.06] Stroke setting on vlve side ) 48 [1.89] 241 [9.49] 289 [11.38] 25 3) 72 [2.83] 276 [10.87] 348 [13.70] 107 [4.21] 276 [10.87] 283 [11.14] [2.99] 344 [13.54] 420 [16.54] 120 [4.72] 344 [13.54] 464 [18.27] osch Rexroth G, RE 24751, edition:

37 Directionl spool vlve WEH; WH 37/40 Stroke setting, mounting options (dimensions in mm [inch]) Mounting options Ordering code NG Stroke setting on vlve side nd Stroke setting on vlve side Stroke setting on vlve side spool position vlve Spring end position Hydrulic end position, C, D, K, Z, HC, HD, HK, HZ, H L1 L2 L3 L1 L2 L3 L1 L2 L3 90 [3.54] 144 [5.67] 234 [9.21] 90 [3.54] 144 [5.67] 234 [9.21] ) 96 [3.78] 241 [9.49] 337 [13.27] 96 [3.78] 241 [9.49] 337 [13.27] 25 3) [3.54] [3.94] ) [3.78] ) [4.84] [5.24] [2.05] 106 [4.17] 180 [7.09] 193 [7.60] 253 [9.96] 316 [12.44] 144 [5.67] 196 [7.72] 280 [11.02] 289 [11.38] 376 [14.8] 449 [17.68] 196 [7.72] ) 48 [1.89] 241 [9.49] 289 [11.38] 25 3) [3.78] 193 [7.60] 289 [11.38] 52 [2.05] 80 [3.15] 48 [1.89] 100 [3.94] 105 [4.13] 144 [5.67] 200 [7.87] 241 [9.49] 276 [10.87] 344 [13.54] 196 [7.72] 280 [11.02] 289 [11.38] 376 [14.80] 449 [17.68] 90 [3.54] 100 [3.94] 96 [3.78] 123 [4.84] 133 [5.24] 90 [3.54] 100 [3.94] 96 [3.78] 123 [4.84] 133 [5.24] 52 [2.05] 56 [2.21] 48 [1.89] 72 [2.84] 76 [2.99] 144 [5.67] 200 [7.87] 241 [9.49] 276 [10.87] 344 [13.54] 106 [4.17] 156 [6.14] 193 [7.60] 225 [8.86] 287 [11.30] 144 [5.67] 200 [7.87] 241 [9.49] 276 [10.87] 344 [13.54] 234 [9.21] 300 [11.81] 337 [13.27] 399 [15.71] 477 [18.78] 196 [7.72] 256 [10.08] 289 [11.38] 348 [13.70] 420 [16.53] 196 [7.72] 256 [10.08] 289 [11.38] 348 [13.70] 420 [16.53] 1) With symol only version "11", with symol only version "12" possile. 2) Version "W.H 22" 3) Version "W.H 25" Notice: he dimensions re nominl dimensions which re suject to tolernces. RE 24751, edition: , osch Rexroth G

38 38/40 WEH; WH Directionl spool vlve Switching time djustment he switching time of the min vlve (1) is influenced y using twin throttle check vlve (2) (type Z2FS 6; dt sheet 27506). 7 5 Modifiction of supply (3) to dischrge control (4): Remove the pilot control vlve (5) he plte (6) to ccept the sel rings stys in plce urn the switching time djustment (2) round its longitudinl xis nd put it ck, instll the pilot control vlve (5) Notice: he modifiction my only e performed y uthorized specilists or t the fctory! ype.weh 10..4/ S ype.weh 10..4/ S2 1 ressure reducing vlve "D3" he pressure reducing vlve (8) hs to e used t pilot pressure ove 250 r [3626 psi] (with "WEH 22 ": 210 r [3046 psi]) nd with version "H". he secondry pressure is kept t constnt level of 45 r [652 psi]. Notice: If pressure reducing vlve "D3" (8) is used, "10" throttle insert hs to e instlled in chnnel of the pilot control vlve. he modifiction my only e performed y uthorized specilists or t the fctory! 8 7 ype.weh 10..4/ /..D3 osch Rexroth G, RE 24751, edition:

39 Directionl spool vlve WEH; WH 39/40 relod vlve (not for NG10) In cse of vlves with depressurized circultion nd internl pilot oil supply, the instlltion of the prelod vlve (9) in chnnel of the min vlve is required in order to uild up the minimum pilot pressure. he pressure differentil of the prelod vlve is to e dded to the pressure differentil of the min vlve (see chrcteristic curves) to result in one totl vlue. he crcking pressure mounts to pprox. 4.5 r [65 psi] relod vlve 9.2 relod vlve 10 Min vlve 11 Suplte Notice: Series-production sttus, see ordering key on the nme plte. Size Mteril numer 4,5 Item 9.2 Item R (up to component series 71) R (from component series 72) 25 ("W.H 22") R (up to component series 76) 25 ("W.H 25") R (up to component series 67) R (from component series 68) 32 R (up to component series 63) p q V chrcteristic curve (mesured with HL46, ϑ Oil = 40 C ± 5 C [104 F ±9 F]) ressure differentil in r [psi] [203] [150] [100] [50] [0] NG16 2 NG25 ("W.H 25") 3 NG25 ("W.H 22") 4 NG32 [0] [20] [40] [60] [80] [100] [120] [140] [160] [185] Flow in l/min [US gpm] RE 24751, edition: , osch Rexroth G