Bosch Rexroth SB24/34 User manual

Instruction manual

RE 66170-B/2019-05-15 English

Load-sensing control block

SB24/34

for mobile applications

©BoschRexrothAG2019. Allrights reserved,

also regarding any disposal, exploitation,

reproduction, editing, distribution, aswell

asinthe event ofapplications forindustrial

property rights.

The data speciﬁed within 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 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.

The cover shows an example application. The

product delivered may diﬀer from the image on

the cover.

The original instruction manual was created in

the German language.

RE 66170-B/2019-05-15, Control block SB24/34, Bosch Rexroth AG

3/78Contents

Contents

1 About this documentation 5

1.1 Validity of the documentation 5

1.2 Required and supplementary documentation 5

1.3 Representation of information 6

1.3.1 Safety instructions 6

1.3.2 Symbols 7

1.3.3 Designations 7

1.3.4 Abbreviations 8

2 Safety instructions 9

2.1 About this chapter 9

2.2 Intended use 9

2.3 Improper use 10

2.4 Personnel qualiﬁcations 10

2.5 General safety instructions 10

2.6 Product-speciﬁc safety instructions 11

2.7 Personal protective equipment 13

3 General instructions on property damage and product damage 14

4 Scope of delivery 17

5 About these products 18

5.1 Performance description 18

5.2 Product identiﬁcation 18

5.3 Product description 19

5.3.1 Deﬁnition of control block segments 19

5.3.2 Types of actuation 20

5.3.3 Deﬁnition of control block segment sides 20

5.3.4 Port designation 21

5.3.5 Flange ﬁgure 21

5.3.6 Connecting plate for ﬁxed pump (C2) 22

5.3.7 Connecting plate for ﬁxed pump (C4) 23

5.3.8 Connecting plate (C3) 25

5.3.9 Connecting plate for variable pump (C6) 26

5.3.10 Hitch control valve EHR24-EM2 28

5.3.11 Hitch control valve EHR24-EHS 30

5.3.12 Control valveSB24-M without individual pressure compensator 33

5.3.13 Control valveSB24-M with individual pressure compensator 35

5.3.14 Control valve SB24-EHS 38

5.3.15 Control valveSB34-EHS 40

5.3.16 End plate (E1) 42

5.3.17 End plate (E2) 43

5.3.18 Central connecting plate 44

5.3.19 Intermediate plate 46

5.4 Control block versions 47

5.4.1 Examples for control blocks with connecting plate, end plate and central

connecting plate 47

5.4.2 Examples for control blocks with connecting plate or end valve 48

5.5 Combination options 49

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Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15

6 Transport and storage 52

6.1 Transporting the control block/control block segment 52

6.1.1 Transport by hand 52

6.1.2 Transport with lifting gear 52

6.2 Storage of control block/control block segment 53

7 Installation 55

7.1 Unpacking 55

7.2 Assembly of control block segments to form a control block 55

7.3 Painting the control block/control block segment 55

7.4 Installation conditions 56

7.5 Installation position 56

7.6 Assembly of the control block/control block segment 56

7.6.1 Preparation 56

7.6.2 Attachment of the control block/control block segment 56

7.6.3 Completion of assembly 57

7.6.4 Mechanical connection of the control block/control block segment 57

7.6.5 Hydraulic connection of the control block/control block segment 58

7.6.6 Customer-speciﬁc coupling connection 60

7.6.7 Electric connection of the control block/control block segment 61

8 Commissioning 62

8.1 Before initial commissioning 62

8.2 Initial commissioning 63

8.3 Air bleeding 64

8.3.1 Air bleeding at control block/control block segment 64

8.3.2 Air bleeding at SB control valves 64

8.3.3 Air bleeding at control valves with EHS 65

8.3.4 Air bleeding at EHR control valves 66

8.4 Recommissioning after standstill 66

9 Operation 67

9.1 Software description 67

10 Maintenance and repair 68

10.1 Cleaning and care 68

10.2 Inspection and maintenance 68

10.3 Repair 68

10.4 Spare parts 69

11 Removal and replacement 70

11.1 Required tools 70

11.2 Preparing for removal 70

11.3 Removal of control block/control block segment from machine 70

11.4 Preparing the components for storage or further use 70

12 Disposal 71

13 Extension and conversion 72

14 Troubleshooting 73

14.1 How to proceed for troubleshooting 73

14.2 Malfunction table 74

15 Technical data 75

16 Alphabetical index 76

Contents

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RE 66170-B/2019-05-15, Control block SB24/34, Bosch Rexroth AG

1 About this documentation

1.1 Validity of the documentation

This documentation applies for load-sensing control blocksSB24/34 of

BoschRexroth including the following control block segments:

• Connecting plate, central connecting plate, intermediate plate and end plate

• Control valvesSB24-M, SB24-EHS and SB34-EHS

• Control valvesEHR24-EHS and EHR24-EM2

This documentation applies for all mentioned control blocks and control block

segments independent from their manufacturing date until new revision of

thisdocument.

This documentation is intended for machine/system manufacturers as well as

authorized specialists and dealers.

This documentation contains important information on safe and proper transport,

installation and disassembly, commissioning, operation, maintenance and servicing

of the product.

▶ Read this documentation completely and in particular the chapters2 "Safety

instructions" on page9 and3 "General instructions on property damage and

product damage" on page14 before starting to work with the control block/

control block segment.

1.2 Required and supplementary documentation

▶ Only commission the product if the documentation marked with the

book symbol is available, understood and complied with.

Table 1: Required and supplementary documentation

Title Document number Document type

Technical data sheet

Contains the permissible technical data.

Please bear in mind that diﬀerent technical data sheets apply

depending on the version:

Data sheet

Load-sensing control block SB24/34 66170

Load-sensing directional valves in sandwich plate design

SB24-EHS, SB34-EHS

66171

Load-sensing directional valves in sandwich plate design SB24-M 66172

Plates SB24, SB34 66173

Hitch control valves EHR5, EHR24-EM2, EHR24-EHS 66126

Load-sensing control blockSB24/34

Contains all information required for directional valve installation

66170-10-R Manual

Order conﬁrmation

Contains the order-related technical data of the control block.

Order conﬁrmation

Oﬀer drawing

Contains the outer dimensions, all connections and the hydraulic

circuitdiagram of the control block.

Oﬀer drawing

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Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15

Table 1: Required and supplementary documentation

Title Document number Document type

Hydraulic ﬂuids based on mineral oils and related hydrocarbons

Describes the requirements for hydraulic ﬂuids on mineral oil basis and

related hydrocarbons for operation with Rexroth hydraulic components,

and provides support for selection of suitable hydraulic ﬂuids for the

hydraulic system.

90220 Data sheet

Environmentally acceptable hydraulic ﬂuids

Describes the requirements for environmentally acceptable hydraulic

ﬂuids on mineral oil basis and related hydrocarbons for operation with

Rexrothhydraulic components, and provides support for selection of

suitable hydraulic ﬂuids for the hydraulic system.

90221 Data sheet

For further documentation on installation and repair, refer toTable 36 on

page69 or visit Rexroth on

www.boschrexroth.com/mobile-hydraulics-catalog.

1.3 Representation of information

Standardized safety instructions, symbols, terms and abbreviations are used

throughout this documentation to ensure safe and proper use of the product.

Forclariﬁcation, they are explained in the sections below.

1.3.1 Safety instructions

This documentation includes safety instructions in chapters2.6 "Product-speciﬁc

safety instructions" on page11 and3 "General instructions on property damage

and product damage" on page14, as well as prior to sequences of actions or

instructions with risk of injury or property damage. Always follow the measures

fordanger prevention associated with the use of this product.

Safety instructions are set out as follows:

SIGNAL WORD

Type and source of danger

Consequences of noncompliance

▶ Measures to prevent danger

•Warning sign: draws attention to the danger

•Signal word: identiﬁes the degree of the danger

•Type and source of danger: indicates the type and source of the danger

•Consequences: describes what occurs if safety instructions are disregarded

•Precautions: states how the danger can be avoided

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RE 66170-B/2019-05-15, Control block SB24/34, Bosch Rexroth AG

Table 2: Hazard classes as deﬁned in ANSIZ535.6

Warning sign, signal word Meaning

DANGER Identiﬁes a dangerous situation that will result in death or

serious injury if it is not avoided.

WARNING Identiﬁes a dangerous situation that may result in death or

serious injury if it is not avoided.

CAUTION Identiﬁes a dangerous situation that may result in minor to

moderate injury if it is not avoided.

NOTICE Property damage: The product or surrounding area may

bedamaged.

1.3.2 Symbols

The following symbols indicate information that is not safety-relevant but increases

understanding of the documentation.

Table 3: Meaning of symbols

Symbol Meaning

If this information is disregarded, the product cannot be used and/or

operated to its full extent.

▶ Single, independent action

Numbered instruction:

The numbers indicate that the actions must be completed in order.

Black circle with white number:

Auxiliary marking for a better understanding.

White circle with black number: Position or assembly group with reference

to the parts list and to the graphics within a chapter.

White circle with black letters: Assembly group with reference to the parts

list and to the graphics within a chapter.

1.3.3 Designations

This documentation uses the following designations:

Table 4: Designations

Designation Meaning

SB24-M Control valve with mechanical control

SB24-EHS/SB34-EHS Control valve with CAN bus-controlled electrohydraulic actuating unit

EHR24-EHS Control valve with CAN bus-controlled electrohydraulic actuating unit for

electrohydraulic hitch control

EHR24-EM2 Control valve with PWM signal-controlled electrohydraulic hitch control

Control valve Directional valve type SB

Control valve Directional valve type EHR

Control spool Main spool

actuation Type of control spool actuation

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Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15

1.3.4 Abbreviations

This documentation uses the following abbreviations:

Table 5: Abbreviations

Abbreviation Meaning

AP Connecting plate

CAN Controller Area Network

CVL Connection valve (with LS signaling direction from right to left)

da Double-acting

PRV Pressure relief valve

DIN German Industrial Standard

DMV Pressure reducing valve

EHR Electrohydraulic hitch control

EHS Electrohydraulic actuating unit

EVL End valve (with LS signaling direction from right to left)

EP End plate

IPC Individual pressure compensator

ISO International Organization for Standardization

PWM Pulse width modulation

RV Non-return valve

sa Single-acting

SPV Check valve

ZAP Central connecting plate

ZP Intermediate plate

Safety instructions 9/78

RE 66170-B/2019-05-15, Control block SB24/34, Bosch Rexroth AG

2 Safety instructions

2.1 About this chapter

The product has been manufactured in accordance with generally accepted

engineering standards. There is still, however, a risk of personal injury or property

damage if this chapter and the safety instructions in this documentation are

notobserved.

▶ Read this documentation completely and thoroughly before working with the

product.

▶ Keep it in a location where it is accessible to all users at all times.

▶ Always include the required documentation when passing the product on to

thirdparties.

2.2 Intended use

Control blocks/control block segments are hydraulic components, meaning that in

their application area they are classiﬁed neither as complete nor as partly completed

machinery as deﬁned in the EC Machinery Directive2006/42/EC. The component

is exclusively intended to form partly completed machinery or complete machinery

together with other components. The component may only be commissioned after it

has been installed in the machine for which it is intended and the safety of the entire

system has been established in accordance with the machinery directive.

The control blocks/control block segments have been developed for applications

in the working hydraulics of agricultural machinery. Deviating use is only permitted

following consultation with BoschRexroth.

▶ Observe the technical data, the application and operating conditions and the

performance limits as speciﬁed in the data sheet and in the order conﬁrmation.

Information about approved hydraulic ﬂuids can be found in the corresponding

datasheet.

Intended use includes having completely read and understood this documentation

and particularly chapter2 "Safety instructions" on page9.

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Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15

2.3 Improper use

Any use other than that described as intended use is considered improper.

BoschRexrothAG is not liable for damages resulting from improper use. The user

issolely responsible for any risks arising from improper use.

The following foreseeable forms of faulty usage are also considered improper

(thislist is not exhaustive):

• Use outside the operating parameters approved in the data sheet or in the order

conﬁrmation (unless speciﬁcally approved by the customer)

• Use of non-approved ﬂuids, e.g., water or polyurethane components

• Application of the control block/control block segment in potentially explosive

environments

2.4 Personnel qualiﬁcations

The activities described in this documentation require a basic understanding of

mechanics, electricity and hydraulics, as well as familiarity with associated technical

terms. For transporting and handling the product, knowledge regarding the use of

lifting gear and lifting accessories is required. Skilled personnel refers to persons

who possess the professional training, knowledge and experience, as well as the

understanding of the regulations relevant to the work to be done that are necessary

to recognize possible dangers and take the appropriate safety measures. Skilled

personnel must follow the rules relevant to their ﬁeld and have the necessary

hydraulic expert knowledge.

Hydraulic expert knowledge includes:

• Being able to read and fully understand hydraulic circuit diagrams and

• Knowledge regarding the function and interaction of hydraulic components.

Bosch Rexroth oﬀers you measures supporting training in speciﬁc areas. For an

overview of the training contents, visit our website under:

www.boschrexroth.com/training

2.5 General safety instructions

• Observe applicable accident prevention and environmental protection regulations.

• Observe the safety regulations of the country in which the product is

used/operated.

• For Germany, the following applies: Hydraulic machinery/systems are "facilities for

handling substances hazardous to water in accordance with the German Federal

Water Act (WHG)". Sections1 and 19 WHG (§19g, 19i, 19l) in particular must be

complied with in this respect.

• Use Rexroth products only when they are in good working order.

• Do not install, operate, remove or maintain Rexroth products if under the inﬂuence

of alcohol, drugs or medication that may aﬀect your reaction time.

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