Pressure relief valve, pilot operated

Transcription

1 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Pressure relief valve, pilot operated Types ZDB and ZDB Nominal size 6 Component series 4X Maximum operating pressure 5 bar Maximum flow 60 L/min Overview of contents Contents Page Features Ordering details Preferred types Symbols Function, section Technical data 4 Characteristic curves 4 Unit dimensions 5 to 7 For information regarding the available spare parts see: Features RE 575/0.05 Replaces: 05.0 HAD5564 /8 Sandwich plate valve Connection location to DIN 440 form A (without locating pin), (standard) Connection location to ISO (with locating pin), (ordering code.../60) 4 pressure stages 5 circuit options With or pressure valve cartridges 4 adjustment elements for pressure adjustment, optional Rotary knob Sleeve with hexagon and protective cap Lockable rotary knob with scale Rotary knob with scale

2 /8 Bosch Rexroth AG Industrial Hydraulics ZDB 6; ZDB 6 RE 575/0.05 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Ordering details Sandwich plate = Z pressure valve cartridge = No code (only for versions VA, VB and VP ) pressure valve cartridges = (only for versions VC and VD ) Pressure relief valve = DB Nominal size 6 = 6 Relief function from to: A T = VA P T = VP B T = VB A T and B T = VC A B and B A = VD Adjustment element for pressure adjustment Rotary knob = Sleeve with hexagon and protective cap = Lockable rotary knob with scale = ) Rotary knob with scale = 7 ) H key under Material No. R is included within the scope of supply ) Locating pin ISO 875-x8-St, Material No. R (separate order) Preferred types (readily available) Type ZDB ZDB 6 VA-4X/00V ZDB 6 VA-4X/00V ZDB 6 VA-4X/5V ZDB 6 VB-4X/00V ZDB 6 VB-4X/5V ZDB 6 VP-4X/50V ZDB 6 VP-4X/00V ZDB 6 VP-4X/00V ZDB 6 VP-4X/5V Z DB 6 4X V * Material No. R R R R R R R R R Further details in clear text No code = Without locating pin /60 ) = With locating pin Seal material V = FKM seals (other seals on request) Attention! The compatibility of the seals and pressure fluid is to be taken into account! Pressure stage 50 = Settable pressure up to 50 bar 00 = Settable pressure up to 00 bar 00 = Settable pressure up to 00 bar 5 = Settable pressure up to 5 bar 4X = Component series 40 to 49 (40 to 49: unchanged installation and connection dimensions) Further standard components can be found within the EPS (Standard Price List). Type ZDB ZDB 6 VC-4X/00V ZDB 6 VC-4X/5V ZDB 6 VD-4X/00V ZDB 6 VD-4X/00V ZDB 6 VD-4X/5V Material No. R9004 R90048 R90047 R90044 R900457

3 RE 575/0.05 ZDB 6; ZDB 6 Industrial Hydraulics Bosch Rexroth AG /8 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Symbols ( = valve side, = subplate side) Type ZDB 6 VA... P A B T Type ZDB 6 VP... P A B T Type ZDB 6 VC... P A B T Function, section Pressure valve types ZDB and ZDB are pilot operated pressue relief valves and of sandwich plate design. They are used to limit the pressure within a hydraulic system. They basically consist of the housing (7), together with one or two pressue relief valve cartridges. The system pressure is set by means of adjustment element (4). Type ZDB 6 VA-... Type ZDB 6 VB... P A B T Type ZDB 6 VD... P A B T At rest, the valve is closed. Pressure in port A acts on the spool (). At the same time pressure passes through orifice () onto the spring loaded side of spool () and via orifice () to the pilot poppet (6). If the pressure in port A rises above the value set on spring (5), then the pilot poppet (6) opens. Fluid can now flow from the spring loaded side of the spool (), then via orifice (), and channel (8) into port T. The resulting pressure drop then moves the spool () thereby opening the connection A to T, while maintaining the pressure set at spring (5). Pilot oil return from the two spring chambers is taken externally via port T A T P B A T P B

4 4/8 Bosch Rexroth AG Industrial Hydraulics ZDB 6; ZDB 6 RE 575/0.05 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Technical data (for applications outside these parameters, please consult us!) General Weight Type ZDB 6 kg Approx. Installation p E q V characteristic curves Type ZDB 6 kg Approx., Optional Ambeint temperature range C 0 to +80 Hydraulic Maximum operating pressure bar 5 Maximum settable pressure bar 50; 00; 00; 5 Maximum back pressure (port Y) bar 5 (take the max. tank pressure of the built-on valve/ directional valve into account!) Maximum flow L/min 60 Pressure fluid Mineral oil (HL, HLP) to DIN 554; fast bio-degradable pressure fluids to VDMA 4568 (also see RE 90); HETG (rape seed oil); HEPG (polyglycols); HEES (synthetic ester); other pressure fluids on request Pressure fluid temperature range C 0 to +80 Viscosity range mm /s 0 to 800 Max. permissible degree of pressure fluid contamination Cleanliness class to ISO 4406 (c) ) The cleanliness class stated for the components must be adhered to in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the components service life. Settable pressure in bar Flow in L/min Class 0/8/5 ) Min. settable pressure in bar For the selection of filters see data sheets RE 50070, RE 50076, RE 5008, RE and RE Characteristic curves (measured with HLP46 and ϑ oil = 40 C ± 5 C) p E min q V characteristic curves VD (A to B) VA VB, VC 4 VP, VD Flow in L/min The characteristic curves are valid for an outlet pressure = zero over the entire flow range! 4

5 RE 575/0.05 ZDB 6; ZDB 6 Industrial Hydraulics Bosch Rexroth AG 5/8 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Unit dimensions: type ZDB 6 VA... (nominal dirmensions in mm) 6,5 Ø 8 Name plate Adjustment type "" Adjustment type "" 4 Adjustment type "" 5 Adjustment type "7" Ø0 8 Ø0 9 6 Space required to remove the key 7 Valve sixing screw holes 8 Locknut A/F4, tightening torque M A = 0 +5 Nm 9 Hexagon A/F Identical seal rings for ports A, B, P, T (subplate side) Hexagon 4A/F, tightening torque M A = 50 Nm 57 Subplate side connection location to DIN 440 form A ISO (with locating pin Ø x 5 mm deep for locating pin ISO 875-x8-St, Material No. R , separate order) Valve side connection location to DIN 440 form A ISO (with locating pin Ø4 x 4 mm deep) 87,5 5 4 F F4 0 96,5 A P T G B 0,0/00mm F F 4 x Ø5,4 Rzmax 4 Required surface finish of the valve mounting surface Valve fixing screws (separate order) 4 S.H.C.S. ISO M5-0.9-flZn-40h-L = 0.09 to 0.4; = 7.4 Nm ± 0%, or 4 S.H.C.S. ISO M5-0.9 = 0. to 0.7, = 8. Nm ± 0% 7 6, ,5

6 /8 Bosch Rexroth AG Industrial Hydraulics ZDB 6; ZDB 6 RE 575/0.05 Unit dimensions: type ZDB 6 VB... and type ZDB 6 VP... (nomainl dimensions in mm) Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) ,5 6,75 Name plate 7 F F4 A Adjusment type "" Adjusment type "" 4 Adjusment type "" 5 Adjusment type "7" P T 4 x Ø5, Space required to remove the key 7 Valve fixing screw holes B Locknut 4A/F, tightening torque M A = 0 +5 Nm 9 Hexagon 0A/F 0 Identical seal rings for ports A, B, P, T (subplate side) Hexagon 4A/F, tightening torque M A = 50 Nm G F F 88,5 Valve side connection location to DIN 440 form A ISO (with locating pin Ø x 5 mm deep for locating pin ISO 875-x8-St, Material No. R , separate order) Valve side connection location to DIN 440 form A ISO (with locating pin Ø4 x 4 mm deep) ,5 8, Ø0 Ø0 0,0/00mm Rzmax 4 Required surface finish of the valve mounting surface Valve fixing screws (separate order) 4 S.H.C.S. ISO M5-0.9-flZn-40h-L = 0.09 to 0.4; = 7.4 Nm ± 0%, or 4 S.H.C.S. ISO M5-0.9 = 0. to 0.7, = 8. Nm ± 0% Ø 5

7 0 9 8 RE 575/0.05 ZDB 6; ZDB 6 Industrial Hydraulics Bosch Rexroth AG 7/8 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Unit dimensions: type ZDB 6 VC... and type ZDB 6 VD... (nominal dimensions in mm) ,5 5 90,5 0 4,5 4, Name plate Adjustment type "" Adjustment type "" 4 Adjustment type "" 5 Adjustment type "7" Space required to remove the key 7 Valve fixing screw holes A P 94 9 T x Ø5, ,75,5,5 8 Locknut 4A/F, tightening torque M A = 0 +5 Nm 9 Hexagon 0A/F 0 Identical seal rings for ports A, B, P, T (valve side) Hexagon 4A/F, tightening torque M A = 50 Nm F F4 7 Subplate side connection location to DIN 440 form A ISO (with locating pin Ø x 5 mm deep for locating pin ISO 875-x8-St, Material No. R , separate order) Valve side connection location to DIN 440 form A ISO (with locating pin Ø4 x 4 mm deep) G B F F 7, ,5 Ø0 Ø0 5 0,0/00mm Rzmax 4 Required surface finish of the valve mounting surface Valve fixing screws (separate order) 4 S.H.C.S. ISO M5-0.9-flZn-40h-L = 0.09 to 0.4; = 7.4 Nm ± 0%, or 4 S.H.C.S. ISO M5-0.9 = 0. to 0.7, = 8. Nm ± 0% 8 Ø

8 8/8 Bosch Rexroth AG Industrial Hydraulics ZDB 6; ZDB 6 RE 575/0.05 Courtesy of CMA/Flodyne/Hydradyne Motion Control Hydraulic Pneumatic Electrical Mechanical (800) Notes Bosch Rexroth AG Industrial Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Telefon +49 (0) 9 5 / 8-0 Telefax +49 (0) 9 5 / 8-58 documentation@boschrexroth.de This document, as well as the data, specifications and other informations set forth in it, are the exclusive property of Bosch Rexroth AG. Without their consent it may not be reproduced or given to third parties. The data specified above only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The details stated do not release you from the responsibility for carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing.