Bosch Rexroth M-2SMM6 SO711 Series Operating Instructions Manual
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Bosch Rexroth M-2SMM6 SO711 Series Operating Instructions Manual

2/2 and 3/2 directional seat valve with manual or fluid logics actuation
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2/2 and 3/2 directional seat valve
with manual or fluid logics actuation
Operating instructions
Size 6
Component series 3X
Maximum operating pressure 350 bar
Maximum flow 25 l/min
Applies to:
2/2 and 3/2 directional seat valve with manual or
fluid logics actuation
Type
M-2SMM6...SO711
M-3SMM6...SO711
M-3SH6...SO712
You can find further information on the correct handling of Bosch Rexroth hydraulic products in our publication "Hydraulic valves for industrial
applications", RE 07600-B/08.2012
RE 22340-B1/11.12
English
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Summary of Contents for Bosch Rexroth M-2SMM6 SO711 Series

  • Page 1 2/2 and 3/2 directional seat valve with manual or fluid logics actuation Type M-2SMM6...SO711 M-3SMM6...SO711 M-3SH6...SO712 You can find further information on the correct handling of Bosch Rexroth hydraulic products in our publication "Hydraulic valves for industrial applications", RE 07600-B/08.2012...
  • Page 2 © This document, as well as the data, specifica- tions and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.

  • Page 3: Table Of Contents

    10.1 Cleaning and care (maintenance) .............29 10.2 Inspection and maintenance ..............29 10.3 Repair ......................30 10.3.1 Rectifying leakages ...................30 10.3.2 Spare parts ....................30 Disassembly and replacement ...............31 Disposal ....................32 12.1 Environmental protection ................32 12.2 Return to Bosch Rexroth AG ..............32 12.3 Packaging ....................32 12.4 Materials used ...................32 12.5 Recycling ....................33...
  • Page 4 4/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Contents Extension and modification ..............33 13.1 Available accessories ................33 Troubleshooting ..................34 14.1 How to proceed with troubleshooting: ............34 Appendix ....................35 15.1 Spare parts list ..................35 15.2 List of addresses ..................35...

  • Page 5: About This Documentation

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 5/36 About this documentation About this documentation Validity of the documentation This documentation applies to the 2/2 and 3/2 directional seat valve with manual or fluid logics actuation: • M-2SMM6...SO711 • M-3SMM6...SO711 • M-3SH6...SO712 This documentation is intended for machine manufacturers, assemblers and system end-users.

  • Page 6: Symbols

    6/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 About this documentation Safety instructions are set out as follows: SIGnAl wORD Type and source of danger Consequences in case of non-compliance Measures for the hazard avoidance • warning sign: Draws attention to the danger •...

  • Page 7: Safety Instructions

    • Use of inappropriate/non-admissible hydraulic fluids. • Exceedance of the specified maximum pressures. • Operation outside the approved temperature range. Bosch Rexroth AG does not assume any liability for damage caused by improper use. The user assumes all risks involved with improper use.

  • Page 8: Qualification Of Personnel

    An expert must observe the relevant specific professional rules. Bosch Rexroth offers measures supporting the training in specific fields. You can find an overview of the training contents on the Internet at: www.boschrexroth.de/didactic.

  • Page 9: Product- And Technology-Dependant Safety Instructions

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 9/36 Safety instructions Product- and technology-dependant safety instructions wARnInG Pressurized system parts and leaking hydraulic fluid! When working at hydraulic systems with stored pressure energy (accumulator or cylinders working under gravity), valves may even be pressurized after the pres- sure supply has been switched off. During assembly and disassembly works, the directional seat valves or parts may fly around and cause personal injuries and/ or damage to property.
  • Page 10 10/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Safety instructions CAUTIOn Contaminated hydraulic fluid! Contamination in the hydraulic fluid may cause functional failures e.g. jamming or blocking of nozzles of the directional seat valve. In the worst case, this may result in unexpected system movements and thus constitute a risk of injury for persons.

  • Page 11: General Information On Damage To Property And Damage To The Product

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 11/36 General information on damage to property and damage to the product General information on damage to prop- erty and damage to the product The warranty only applies to the supplied configuration. • The claim to warranty expires if the product is incorrectly assembled, commis- sioned and operated, not used as intended and/or handled improperly.

  • Page 12: Scope Of Delivery

    Accessories such as valve mounting screws are not included in the scope of de- livery and must be ordered separately. See chapter 13.1 "Available accessories". In case of complaints, please contact Bosch Rexroth AG, see section 15.2 "List of addresses".

  • Page 13: Ordering Code

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 13/36 Information on this product Ordering code Table 4: Type code SO 711 SO 712 2 main ports (only size 6) 3 main ports no code = without check valve insert, without throttle insert Seat valve, direct operated B08 = Throttle Ø 0.8 mm...

  • Page 14: Product Description

    14/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Information on this product Product description 5.3.1 Function The directional seat valve type M-2SMM6...SO711 / M-3SMM6...SO711 / M-3SH6...SO712 is a directional seat valve with manual or fluid logics actua- tion. It controls start, stop and direction of flow and basically comprises of the housing (1), actuation (2), the hardened valve system (3) as well as the ball/the spool (4) as closing element.

  • Page 15: Spool Symbols

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 15/36 Information on this product Types of actuation see page 13 Fig. 2: Section type M-3S...6C... 5.3.3 Spool symbols The seat arrangement offers the following options: Table 6: Spool symbols 2/2 directional seat valve Symbol "n"...

  • Page 16: Technical Data

    16/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Information on this product 5.3.4 Technical data Table 7: Technical data general Size Size Type Weight -2/2 directional seat valve -3/2 directional seat valve Pilot pressure -Maximum -Switch-on pressure ≥ 40 -Switch-off pressure ≤...

  • Page 17: Characteristic Curve Size 6 (Measured With Hlp46, Θoil = 40 °C ± 5 °C)

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 17/36 Information on this product 5.3.5 Characteristic curve size 6 (measured with HLP46, ϑoil = 40 °C ± 5 °C) Δp - q characteristic curve 2/2 directional seat valve 24 25 Flow in l/min ➝ M-2S...6...n..., P to T Fig.

  • Page 18: Performance Limit (Measured With Hlp46, Θoil = 40 °C ± 5 °C)

    18/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Information on this product 5.3.6 Performance limit (measured with HLP46, ϑoil = 40 °C ± 5 °C) Table 8: Performance limit Maximum operating pressure Flow in l/min in bar Symbol Comment Size 6 ≥...

  • Page 19: Unit Dimensions Type M-.Smm

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 19/36 Information on this product 5.3.7 Unit dimensions type M-.SMM... (dimensions in mm) 22° 177,4 0,01/100 51,5 Rzmax 4 141,1 Required surface quality of the valve contact surface Fig. 5: Type M-.SMM... (dimensions are nominal dimensions)

  • Page 20: Unit Dimensions Type M-.Sh

    20/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Information on this product 5.3.8 Unit dimensions type M-.SH... (dimensions in mm) 126,3 11,8 0,01/100 Rzmax 4 Required surface quality of the valve contact surface Fig. 6: Unit dimensions type M-.SMM... (dimensions are nominal dimensions)

  • Page 21: Throttle Insert

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 21/36 Information on this product 5.3.9 Throttle insert Fig. 7: Section throttle insert The use of a throttle insert is required when due to prevailing operating condi- tions, flows can occur during the switching processes, which exceed the perfor- mance limit of the valve.

  • Page 22: Product Identification

    22/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Information on this product Product identification Information on the name plate The name plate comprises the following information: Fig. 8: name plate Table 9: Information on the name plate Type of information...

  • Page 23: Transport And Storage

    Transporting the product Directional seat valves from Bosch-Rexroth are high-quality products. In order to prevent damage at the directional seat valve, transport the directional seat valves in the original packaging or with equivalent transport protection.

  • Page 24: Assembly

    24/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Assembly Assembly Unpacking Dispose of the packaging in accordance with the national conditions of your country. Changes at the surface protection of the directional seat valve wARnInG Electrostatic charging due to inadmissible surface protection! Painting the directional seat valve with non-conductive surface coating leads to electric charging.

  • Page 25: Assembling The Directional Seat Valve

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 25/36 Assembly Assembling the directional seat valve wARnInG Incorrect assembly of plug screws and lines! Improperly fastened plug screws and lines may become loose during subsequent operation and fly around due to the pressure and thus cause serious injuries.
  • Page 26 26/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Assembly Have sufficiently dimensioned collecting containers, non-linting fabric and medium-binding materials ready in order to collect or bind leaking medium. Assembly steps of the directional seat valve: The mounting surfaces of the directional seat valve and the subplate must be clean and free of hydraulic fluid.

  • Page 27: Commissioning

    5.3.4 "Technical data". Bleeding the hydraulic system Bleeding of the directional seat valve is usually not necessary. However Bosch Rexroth recommends bleeding the entire hydraulic system; while doing so, the following points are to be observed: Before the actual operation, switch the directional seat valve several times with reduced pressure (50 % operating pressure). This will press out any...

  • Page 28: Operation

    28/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Operation remaining air from the directional seat valve. Mechanical damage due to inadmissibly high acceleration of the hydraulic fluid and the valve spool is thus avoided and the directional seat valve's life cycle is increased.

  • Page 29: Cleaning And Care (Maintenance)

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 29/36 Maintenance and repair 10.1 Cleaning and care (maintenance) NOTICE Solvents and aggressive cleaning agents! Aggressive cleaning agents may damage the seals and the surface of the valve and let them age faster.

  • Page 30: Repair

    M-...S...SO711/712 | RE 22340-B1/11.12 Maintenance and repair 10.3 Repair Bosch Rexroth offers a wide range of repair services for the directional seat valve. Only use original spare parts from Bosch Rexroth for repairing the directional seat valve. 10.3.1 Rectifying leakages Remove the directional seat valve, see chapter 11 "Disassembly and replacement".

  • Page 31: Disassembly And Replacement

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 31/36 Disassembly and replacement 11 Disassembly and replacement wARnInG Pressurized system parts. When working at pressurized system parts, there is the risk of injury by leaking hydraulic fluid. Ensure before the disassembly that the hydraulic system is depressurized.

  • Page 32: Disposal

    The materials for disposable packaging are mostly cardboard, wood, and styro- foam. They can be recycled without any problems. Due to ecological reasons, dis- posable packaging should not be used for returning products to Bosch Rexroth AG. 12.4 Materials used Directional seat valves from Bosch Rexroth do not contain any hazardous materi- als that could be released during intended use.

  • Page 33: Recycling

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 33/36 Extension and modification 12.5 Recycling Due to the high share of metal, the directional seat valve can mostly be recycled. In order to achieve an ideal metal recovery, disassembly into individual assem- blies is required.

  • Page 34: Troubleshooting

    34/36 Bosch Rexroth AG M-...S...SO711/712 | RE 22340-B1/11.12 Troubleshooting 14 Troubleshooting 14.1 How to proceed with troubleshooting: Always work systematically and targeted, even when under time pressure. Random and imprudent disassembly and readjustment of settings might result in the inability to restore the original cause of fault.

  • Page 35: Appendix

    RE 22340-B1/11.12 | M-...S...SO711/712 Bosch Rexroth AG 35/36 Appendix 15 Appendix 15.1 Spare parts list • Seal kit for the valve connection surface Mat. no. R961008307 15.2 list of addresses Please refer to www.boschrexroth.com for addresses of our sales and ser- vice network.
  • Page 36 Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main Germany Phone +49 (0) 9352 18-0 documentation@boschrexroth.de www.boschrexroth.com Subject to change without notice Printed in Germany RE 22340-B1/11.12...

This manual is also suitable for:

Rexroth m-3smm6 so711 seriesRexroth m-3sh6 so712 series

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