RK 80/0.0 H088/98 + H089/98 ype DBW 0 B-/-EGN9K with plug-in connector (seprte order) nd type DB 0 --/ 0 DB; DBW / RK 80/0.0
Without directionl vlve = No code With uilt-on directionl = W ilot operted vlve (complete) = No code ilot operted vlve without min spool ssemly (do not enter nom. size) = C ilot operted vlve with min spool ssemly (enter vlve sizes 0 or 0) = C ilot operted vlve without min spool ssemly for suplte mounting = ) (do not enter nominl size) DB Nom. size Ordering detils Supltes hreded connections No code G 0 = 0 = 0 (G /) = (G /) = 0 = 0 (G ) = (G /) = 0 = 0 (G /) A B Normlly closed = A ) A B Normlly open = B ) For suplte mounting = No code For threded connections = G Adjustment element Rotry kno = Sleeve with hexgon nd protective cp = Lockle rotry kno with scle = ) Rotry kno with scle = 7 With min spool Ø mm (ll nominl sizes) = With min spool Ø 8 mm (only for NS ) = N Series 0 to 9 (0 to 9: unchnged instlltion nd connection dimensions) = Settle pressure up to 0 r = 0 Settle pressure up to 00 r = 00 Settle pressure up to 00 r = 00 Settle pressure up to r = Settle pressure up to 0 r = 0 ) DB/DBW re the sme s DBC/DBWC, except tht the centrl drilling is closed ) Ordering detils only required for the version with uilt-on directionl vlve (DBW). ) H-key with Mteril No. R9000088 is included within the scope of supply. ) Ctlogue sheets RE 78 (directionl spool vlve) or RE 08 (directionl poppet vlve) ) lug-in connectors must e ordered seprtely (see pge ). ) Ordering detils only required for the version with uilt-on directionl vlve nd switching shock dmping (DBW / S ). 7) Only possile up to pressure stge r 8) Hyphen only required for the versions with uilt-on directionl vlve (DBW), without for U or S. RK 80/0.0 / DB; DBW
* Further detils in cler text Design tested No code = Without design testing E = Sfety vlve with design testing to DGRL 97//EG No code = NBR sels V = FKM sels (other sels on request) Attention! he comptiility of the sels nd pressure fluid hs to e tken into ccount! R ) = Orifice Ø. mm in port B of the directionl vlve Electricl connection K ; ) = Without plug-in connector, individul connection with component plug DIN EN 7 0-80 No code = Without hnd override N ) = With hnd override N9 ) = With protected hnd override (stndrd) G ) = V DC W0 ) = 0 V AC 0/0 Hz No code = Without directionl vlve E ) = With directionl spool vlve (high performnce vlve ) ) settle pressure up to 0 r SM ) = With directionl poppet vlve (high performnce vlve ) ) settle pressure up to 0 r No code = Without switching shock dmping S = With switching shock dmping (only with version DBW) No code = Stndrd version U 7) = Vlve for minimum opening pressure (not for version without min spool ssemly nd not suitle for cross-line relief!) ilot oil supply nd pilot oil drin 8) = Internl pilot oil supply nd pilot oil drin = Externl pilot oil supply, internl pilot oil drin Also see = Internl pilot oil supply, externl pilot oil drin symols = Externl pilot oil supply nd pilot oil drin on pge 7 referred types (redily ville) ype Mteril No. ype Mteril No. DB 0--/0 R90090 DB 0--/0 R9009 DB 0--/00 R90090 DB 0--/00 R900977 DB 0--/00 R9008777 DB 0--/00 R90088 DB 0--/ R90090 DB 0--/ R90098 DB 0--/0 R9009799 DB 0--/0 R900090 DB 0 --/0 R90097 DB 0 G-/0 R900988 DB 0 --/00 R90089 DB 0 G-/00 R900098 DB 0 --/00 R9009078 DB 0 G-/00 R9000079 DB 0 --/ R90090 DB 0 G-/ R9009 DB 0 --/0 R900908 DB 0 G-/0 R900 DB 0 G-/0 R900908 DB 0 G-/00 R9009707 DB 0 G-/ R9009777 Further preferred types nd stndrd components DB 0 G-/0 R90099 cn e found in the ES (Stndrd rice List). DB 0 G-/00 W R900070 0 DB; DBW / RK 80/0.0
For further plug-in connectors, see RE 08 00 Vlve side Colour Without circuitry With indictor light 0 V Mteril No. With rectifier 0 V With indictor light nd Z-diode protective circuit V Grey R900078 / Blck R900079 R9009 R900099 Ordering detils for design tested pressure relief vlves type DB(W)../..E, series Design tested to directive 97//EG (pressure component directive) Component NS Designtion indentifiction 0 DB 0 / E ÜV.SV. 8..F.G.p DBW 0 / * E ÜV.SV. 8..F.G.p DB 0 / E ÜV.SV. 8..F.G.p DBW 0 / * E ÜV.SV. 8..F.G.p DB 0 N/ E ÜV.SV. 8..F.G.p * DBW 0 N/ * E ÜV.SV. 8..F.G.p Directionl vlve, normlly closed Directionl vlve, normlly open For suplte mounting for threded connections = A = B = No code = G Adjustment element hnd wheel = (seled pressure djuster, unloding or djustments in the lower settle rnge is possile) Adjustment element with seled protective cp = (no djustment or unloding is possile) he pressure detils continined within the type code re to e entered y the customer, e.g. = 0 ressure djustments 0 r nd in r steps re possile Internl pilot oil supply nd pilot oil drin = )) Recommended: Internl pilot oil supply, externl pilot oil drin = ) Electricl dt ordering detils (see pge ) e.g. = EGN9K NBR sels = No code FKM sels = V Detils re completed y the fctory ) Hyphen only required for the version with uilt-on directionl vlve (DBW) ) Externl pilot oil supply is not possile! Mx. permissile Set response flow q Vmx over in L/min pressure with pilot oil drin p in r externl internl 70 0 0 to 0 0 00 to 0 0 00 to 0 0 00 to 0 0 80 0 to 0 70 0 to 0 0 0 to 0 0 00 to 0 00 0 to 0 00 0 to 0 0 0 to 0 700 80 to 0 Importnt notes: Before ordering design tested pressure relief vlve, checks hve to e crried out to ensure tht t the required response pressure p the mximum permissile flow q Vmx of the sfety vlve is greter thn the mximum possile flow from the system! he pproprite regultions must e tken into ccount. he return lines (ports nd ) from sfety vlves must vent in sfe mnner. Fluid must not e le to gther in venting system. he removl of the sel from sfety vlve invlidtes the DGRL pprovl! he requirements of the pressure component directive 97//EG nd the AD000 informtion sheet A must e tken into ccount! RK 80/0.0 / DB; DBW
0 p A in r 0 0 0 0 0 p A in r 0 0 0 0 0 p in r 0 0 0 DB(W) 0.. - /...E, 0 0 0 0 00 0 p 00 0 in r 0, 0, 0, 8 DB(W) 0 - /...E 0 00 0 00 00 00 00 80 0 0 For n explntion of the digrm see pge Chr. curves Response pressure p A in r 0 0 0 0 0 Chrcteristic curves for intermedite vlues cn e otined y interpoltion. q Vmx in L/min Chr. curves Response pressure p A in r 0 0 0 0 7 8 0 Chrcteristic curves for intermedite vlues cn e otined y interpoltion. q Vmx in L/min DB; DBW / RK 80/0.0
he reltionship of the mximum permissile flow q Vmx nd the ck pressure p in the return line with internl pilot oil return A in r 0 0 0 0 80 0 0 in r DB(W) 0 - /...E 0 8 0 r -Kennlinie, Chr. curves 0 7 80 r -Kennlinie Chr. curves, 8 0, 0 0 00 00 00 00 00 0 0 00 80 Chr. curves Repsonse pressure p A in r 0 0 0 0 7 8 0 Chrcteristic curves for intermedite vlues cn e otined y interpoltion. q Vmx in L/min p A = Response pressure in r p = Mximum permissile ck pressure in the return line (port ) (he sum of ll of the possile ck pressures; lso see the AD000 - A informtion sheet) p mx = 0% x p A (t q V = 0) to DGRL 97//EG q Vmx = Mximum permissile flow in L/min An explntion of the digrm using type DB(W) 0.../...E s n exmple Exmple Given: Required: Solution: Exmple Given: Required: Solution: he flow for which sfety hs to e provided from the system/ccumultor q Vmx = 00 L/min Sfety vlve set response pressure p A = 0 r p See the rrows within the digrm ove (00L/min, 0r) p r he flow for which sfety hs to e provided from the system/ccumultor q Vmx = 00 L/min Sfety vlve set response pressure p A = 80 r p See the rrows within the digrm ove (00L/min, 80r) p r RK 80/0.0 / DB; DBW
8 9 0 7 Symols ype DB 0 ype DB ype DB ype DB ype DBW ype DBW ype DBW ype DBW Normlly closed Normlly closed Normlly closed Normlly closed A B A B A B A B A B A B A B A B Normlly open Normlly open Normlly open Normlly open DB; DBW 7/ RK 80/0.0
A he function of this vlve is siclly the sme s the vlve type DB. he unloding of the min spool () however is chieved y operting the uilt-on directionl spool vlve (). B () 7 0 ressure relief vlve with switching shock dmping (sndwich plte), type DBW /..S...R With switching shock dmping vlve (7) the opening of the connection from B to B is delyed. ressure peks nd coustic unloding shocks in the return line re therey voided. It is fitted etween the pilot control vlve () nd the directionl vlve (). B () 8 7 B he degree of dmping (unloding shock) is determined y the si of the orifice (8). he Ø. mm orifice is recommended (orderin detil..r..). B B Shown: Directionl vlve open RK 80/0.0 8/ DB; DBW
Generl Instlltion Optionl Amient temperture rnge DB.. C 0 to + 80 (NBR sels) to + 80 (FKM sels) DBW... C 0 to + 0 (NBR sels) to + 0 (FKM sels) he minimum housing mteril strength (for suplte mounting nd DBC../DBWC.. vlves): Housing mterils re to e so selected tht dequte sfety is ensured for ll conceivle operting pressures, e.g.: with reference to the compressive strength, thred strength nd tightening torques Weight DB. 0 DB. DB. 0 DB. DB. 0 Suplte mounting DB kg... DBW kg.0.9.8 DBC kg. DBWC kg. DBC0 or 0 kg. DBWC0 or 0 kg.9 hreded connections DB..G kg....0.8 DBW..G kg.7.... echnicl dt Directionl spool vlve See ctlogue sheet RE 78 Directionl poppet vlve See ctlogue sheet RE 08 Hydrulic Mximum operting pressure r 0 t ports r Mx. ck pressure: ort DB.. r r Anschluss ort (DBW../...) (DBW../...) or port zw. (DBW../..) Anschluss (DBW../..) r 0 For DC solenoids 0 for AC solenoids Settle pressure Minimum r Flow dependent (see chrteristic curves on pge ) Mximum r 0; 00; 00; ; 0 Mximum flow DB. 0 DB. DB. 0 DB. DB. 0 Suplte mounting L/min 0 00 0 hreded connections L/min 0 00 00 00 0 ressure fluid Minerl oil (HL, HL) to DIN ) ; Fst io-degrdle pressure fluids to VDMA 8 (lso see RE 90 ); HEG (rpe seed oil) ) ; HEG (polyglycole) ) ; HEES (synthetic ester) ) ; other pressure fluids on request ressure fluid temperture rnge C 0 to + 80 for NBR sels C to + 80 for FKM sels Viscosity rnge mm /s 0 to 800 ISO code clenliness clss Mximum permissile degree of contmintion of the pressure fluid is to ISO 0 (C) clss 0/8/ ) ) Suitle for NBR nd FKM sels Effective filtrtion prevents fults from occurring nd t the sme ) Only suitle for FKM sels time increses the component service life. ) For the selection of filters see ctlogue sheets he clenliness clss stted for the components must e dhered RE 0 070, RE 0 07 nd RE 0 08. too in hydrulic systems. 0 DB; DBW 9/ RK 80/0.0
Hydrulic Mximum flow See tles on pge nd chrcteristic curves on pges nd ressure fluid Minerl oil (HL, HL) to DIN nd DIN ressure fluid temperture rnge C 0 to + 0 (for NBR sels) C to + 0 (for FKM sels) Viscosity rnge mm /s to 0 Mximum ck pressure DB../.. DB../.. DBW../.. DBW../.. ort r 0 0 ort r ) p < ) p < ) For pplictions outside these prmeters, plese consult us! ) See chrcteristic curves nd explntions regrding the permissile ck pressures, see pges nd Generl guidelines he unloding function (directionl vlve function with the type DBW) must not e used for sfety functions! For type DBW..B../... the lowest settle pressure is set if the current fils or if there is cle rek (circultion pressure). For type DBW..A../... the pressure relief function is ctivted if the current fils or if there is cle rek. Hydrulic ck pressures in port with n internl pilot oil drin or in port with n externl pilot oil drin re dded : to the response pressure set t the pilot control of the vlve. Exmple: Vlve pressure setting vi the spring loding (os. on pge 7) in the pilot control vlve/djustment unit p spring = 00 r Hydrulic ck pressure in port with n internl pilot oil drin p hydrulic = 0 r => Response pressure = p spring + p hydrulic = 0r RK 80/0.0 0/ DB; DBW
ϑ 00 Inlet pressure in reltion to the flow Inlet pressure in r 0 00 0 00 0 00 0 0 00 00 0 00 00 00 00 0 Flow in L/min Minimum settle pressure nd ypss pressure in reltion to the flow ) Stndrd version 0 NS0 NS NS 0 Min. settle pressure, ypss pressure in r 8 0 00 00 0 00 00 00 00 0 Flow in L/min Minimum settle pressue nd ypss pressure in reltion to the flow ) Version U 0 NS0 NS NS (N) DBC 0 DBWC 0 Min. settle pressure, ypss pressue in r 8 0 00 00 0 00 00 00 00 0 Flow in L/min ) he chrcteristic curves re vlid for outlet pressure p = 0 over the entire flow rnge! NS0 NS NS (N) DBC 0 DBWC 0 DB; DBW / RK 80/0.0
ϑ ilot flow in L/min ilot flow, ν mesured t ν = 0, mm /s,0,8,,,,0 0,8 0, 0, 0, 0 00 00 0 00 00 00 00 0 Flow in L/min Unit dimensions: for threded connections (dimensions in mm) 9 G /; 9 8 9 ; 7 8 Ø 0 Ø G /; D ØD 7, 90 7 D ØD 80 7 NS0 NS NS Ø7 Ø9, 0 9 8 Ø 9 ype D ØD DB 0 G G / DB G G / DB 0 G G 7 8 DB G G / 8 0 DB 0 G G / Dimensions for uilt-on directionl spool vlve, see pges nd For item explntions see pge RK 80/0.0 / DB; DBW
A 8, (9) 0 8 g g 9, (98) 8 7 0 8 ; 7 0 Ø 0 Ø9, 0 9 8 Ø 98 G /; G /; 78 9 M8 x ; 0 L9 Ø 9 9 8 L7 L8 L L ØD 9 For item explntion see pge B B 0,0/00mm R mx L L L L 0 Required surfce finish of mting piece ype L L L L L L L7 L8 L9 B B ØD DB. 0 9.8. 7.. 7. 0. 78.8 DB. 0.7.....8.8 0. 00 70 8 DB. 0 7. 88.9..7 7..8 0 8. 0 DB; DBW / RK 80/0.0
0, g g 8 7 0 8 ; 7 Ø 0 Ø9, 0 9 8 Ø 98 G /; G /; 78 9 M8 x ; 0 L9 Ø 9 9 8 L8 L7 L L ØD For item explntions see pge 9 B B 0,0/00mm R mx L L L L 0 Required surfce finish of the mting piece ype L L L L L L L7 L8 L9 B B ØD DB. 0 9.8. 7.. 7. 0. 78.8 DB. 0.7.....8.8 0. 00 70 8 DB. 0 7. 88.9..7 7..8 0 8. 0 RK 80/0.0 / DB; DBW
0 9 0 0,0/00mm R mx 9 8 G /; 9 8 ; 7 9 0 9 7 8 Ø 0 Ø9, 0 9 8 Ø, Ø8, 8 7, 9 Required surfce finish of the mting piece Dimensions for uilt-on directionl spool vlve, see pges nd For item explntions, see pge "Z" Ø, x x mx. R 0, Ø M; 9±0, ±0, Ø8, +0, Ø Ø H7 B 0,008 Ø0,0 B Z Z Ø,8 +0, Ø x 0 M; 8, 7 0,0/00 mm A Z Ø 0 +0, +0,0 +0, 8 0,0 A View Z = R mx x M8; = R mx 8 Z = R Z DB; DBW / RK 80/0.0
Bosch Rexroth AG Industril Hydrulics D-978 Lohr m Min Zum Eisengießer D-978 Lohr m Min elefon 0 9 / 8-0 elefx 0 9 / 8-8 elex 89 8-0 emil documenttion@oschrexroth.de Internet www.oschrexroth.de RK 80/0.0 / DB; DBW