Pressure relief valve, directly operated

Transcription

1 1/16 ressure relief valve, directly operated RE 25722/1.9 Replaces: 11.7 Type ZDY D / Z2DY D Nominal size (NG) 6 and 1 Unit series 1X Maximum working pressure 315 bar Maximum flow rate 6 and 12 l/min T T 239 Overview of contents Contents age Features 1 Ordering data 2 Symbols 2 Function, sectional diagram 3 Technical data 4 Characteristic curves 5 to 7 Unit dimensions NG6 8 to 1 Unit dimensions NG1 11 to 14 Features Modular valve Mounting hole configuration NG6: ISO NG1: ISO pressure stages 5 effective directions With 1 or 2 pressure valve cartridges 2 setting elements: Sleeve with hexagon socket Rotary knob, lockable, with scale Subplates as per Technical Data Sheet RE 4553 (NG6) and RE 4555 (NG1) (order separately) For information regarding the available spare parts see:

2 2/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Ordering data Z D Y D 1X V * Modular valve = Z With 2 pressure valve cartridges (DC and DD versions) = 2 With 1 pressure valve cartridge (D, D and D versions) = no desig. ressure relief valve = D Mounting hole configuration NG6: ISO NG1: ISO = Y NG6 = 6 NG1 = 1 Directly operated = D Injection from to T = T = T = T and T = C and = D Setting element Sleeve with hexagon socket = 2 Rotary knob, lockable, with scale 1) = 3 Further information in plain text 6 = NG6 Mounting hole configuration ISO with locating bore No desig. = NG1 Mounting hole configuration ISO , without locating bore V = FKM seals (other seals available on request) Note Take compatibility of seals and pressure fluid into account! Max. setting pressure 8 = Setting pressure range up to 8 bar 16 = Setting pressure range up to 16 bar 315 = Setting pressure range up to 315 bar 1X = Unit series 1 to 19 (1 to 19: installation and connection dimensions unchanged) 1) H key is included in delivery Symbols ZDY6D.-1X/.V/6 ZDY6D.-1X/.V/6 ZDY6D.-1X/.V/6 T T T M T Z2DY6DC.-1X/.V/6 T T Z2DY6DD.-1X/.V/6 T T T ZDY1D.-1X/.V ZDY1D.-1X/.V ZDY1D.-1X/.V T T T T T T T M T T T T T T Z2DY1DC.-1X/.V Z2DY1DD.-1X/.V T T T T T T T T

3 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 3/16 Function, sectional diagram Type ZDY and Z2DY pressure valves are directly operated pressure relief valves in modular design. They are used to limit the system pressure. The valves essentially consist of the housing (1) and one or two pressure valve cartridges (2). The system pressure is adjusted by means of the setting element (3). In initial position the valves are closed. The pressure in duct acts on the piston (4). If the pressure in duct exceeds the value set at the spring (5), the pilot poppet (6) opens. ressure fluid then flows from duct to duct T. Control oil returns from the spring chambers internally via duct T. Type ZDY6D2-1X/.. Type ZDY6D3-1X/ Type ZDY1D2-1X/

4 4/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Technical data NG6 General Valve function ressure relief valve, directly operated Type of mounting Intermediate plate NG6, ISO Installation position Optional Weight Version 2 kg 1.4 Version 3 kg 1.8 Hydraulic ressure fluid Mineral oil (HL, HL) to DIN Rapidly biodegradable pressure fluids to VDM (also see RE 9221), HETG (rapeseed oil), HEG (polyglycols), HEES (synthetic ester), other pressure fluids available on request Maximum permissible degree of contamination of pressure fluid. urity class to ISO 446 (c) Class 2/18/15 1) ressure fluid temperature range C Seals FKM Viscosity range mm 2 /s Max. setting pressure bar 8, 16 or 315 Max. working pressure bar 315 Max. back pressure (port T, T ) bar 16 Max. flow rate l/min 6 1) The purity classes stated for the components must be complied with in hydraulic systems. Effective filtration prevents problems and also extends the service life of components. For a selection of filters, see Technical Data Sheets RE 57, RE 576 and RE 581. Technical data NG1 General Valve function ressure relief valve, directly operated Type of mounting Intermediate plate NG1, ISO Installation position Optional Weight Version 2 kg 2.9 Version 3 kg 3.5 Hydraulic ressure fluid Mineral oil (HL, HL) to DIN Rapidly biodegradable pressure fluids to VDM (also see RE 9221), HETG (rapeseed oil), HEG (polyglycols), HEES (synthetic ester), other pressure fluids available on request Maximum permissible degree of contamination of pressure fluid. urity class to ISO 446 (c) Class 2/18/15 1) ressure fluid temperature range C Seals FKM Viscosity range mm 2 /s Max. setting pressure bar 8 16 or 315 Max. working pressure bar Max. back pressure (port T, T ) bar Max. flow rate l/min ) The purity classes stated for the components must be complied with in hydraulic systems. Effective filtration prevents problems and also extends the service life of components. For a selection of filters, see Technical Data Sheets RE 57, RE 576 and RE 581.

5 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 5/16 Characteristic curves for ZDY6D, ZDY6D, ZDY6D and Z2DY6DC (measured with HL46, J oil = 4 C ± 5 C) p = 8 bar p = 16 bar p = 315 bar

6 6/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Characteristic curves for Z2DY6DD (measured with HL46, J oil = 4 C ± 5 C) p = 8 bar p = 16 bar p = 315 bar

7 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 7/16 Characteristic curves for ZDY1D, ZDY1D, ZDY1D Z2Y1DC and Z2DY1DD (measured with HL46, J oil = 4 C ± 5 C) 9 8 p = 8 bar p = 16 bar p = 315 bar

8 8/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Unit dimensions NG6 (nominal dimensions in mm) max 164 ZDY6D3-1X/.V/6 ZDY6D3-1X/.V/6 * Test port 4 max ZDY6D2-1X/.V/6 ZDY6D2-1X/.V/6 * 69 max ISO x Ø5,2H13 2,5 15,5 7,5 F1 T F2 46 F4 G F3 1,3 max 132 * without test port Valve fastening bolts: 4 cheese-head bolts ISO 4762-M5x flzn-24h-l =.9.14); Tightening torque M = 7 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M5x flzn-24h-l =.12.17); Tightening torque M = 8.9 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

9 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 9/16 Unit dimensions NG6 (nominal dimensions in mm) ZDY6D3-1X/.V/6 max 121 max ZDY6D2-1X/.V/6 max max 89 4x Ø5,2H13 13 F1 F4 T G F2 F3 1,3 15,5 7,5 46 ISO Valve fastening bolts: 4 cheese-head bolts ISO 4762-M5x flzn-24h-l =.9.14); Tightening torque M = 7 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M5x flzn-24h-l =.12.17); Tightening torque M = 8.9 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

10 1/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Unit dimensions NG6 (nominal dimensions in mm) Z2DY6DC3-1X/.V/6 Z2DY6DD3-1X/.V/6 max 121 max Z2DY6DC2-1X/.V/6 Z2DY6DD2-1X/.V/ max 89 max 132 7, ,5 F1 T F2 F4 G F3 1,3 4x Ø5,2H13 ISO Valve fastening bolts: 4 cheese-head bolts ISO 4762-M5x flzn-24h-l =.9.14); Tightening torque M = 7 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M5x flzn-24h-l (coefficient of friction µ ges =.12.17); Tightening torque M = 8.9 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

11 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 11/16 Unit dimensions NG1 (nominal dimensions in mm) ZDY1D2-1X/.V max Test port ISO x Ø6,5H13 11,5 F1 F2 18, T T 69 F4 F3 max 88 1,3 ZDY1D3-1X/.V max 196 max Valve fastening bolts: 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.9.14); Tightening torque M = 12.5 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.12.17); Tightening torque M = 15.5 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

12 12/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Unit dimensions NG1 (nominal dimensions in mm) ZDY1D2-1X/.V max max ISO x Ø6,5H13 11,5 F1 F2 18,5 23 T T 69 F4 F3 88 1,3 ZDY1D3-1X/.V max 12 max Valve fastening bolts: 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.9.14); Tightening torque M = 12.5 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.12.17); Tightening torque M = 15.5 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

13 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 13/16 Unit dimensions NG1 (nominal dimensions in mm) ZDY1D2-1X/.V 88 max 16 11,5 ZDY1D3-1X/.V max 192 max ISO x Ø6,5H13 F1 F ,5 T F4 T F3 1,3 max Valve fastening bolts: 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.9.14); Tightening torque M = 12.5 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.12.17); Tightening torque M = 15.5 Nm ± 1 %,1 Rt 4 Required surface quality of mating component Screw length as required

14 14/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Unit dimensions NG1 (nominal dimensions in mm) Z2DY1DC2-1X/.V Z2DY1DD2-1X/.V max 89 max ISO ,5 17 4x Ø6,5H13 F1 F2 18, T F4 T F3 1,3 Z2DY1DC3-1X/.V Z2DY1DD3-1X/.V max 121 max Valve fastening bolts: 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.9.14); Tightening torque M = 12.5 Nm ± 1 % or 4 cheese-head bolts ISO 4762-M6x flzn-24h-l =.12.17); Tightening torque M = 15.5 Nm ± 1 % Screw length as required,1 Rt 4 Required surface quality of mating component

15 RE 25722/1.9 ZDY D / Z2DY D Hydraulics osch Rexroth G 15/16 Notes

16 16/16 osch Rexroth G Hydraulics ZDY D / Z2DY D RE 25722/1.9 Notes osch Rexroth G Hydraulics Zum Eisengießer Lohr am Main, Germany Telefon +49 () / 18- Telefax +49 () / documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch Rexroth G. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.