RE 64141/2021-09-29, Bosch Rexroth AG

ContentsFeatures ▶ Load pressure independent flow sharing (LUDV):

Distributes the available flow between the directional valve sections as required, regardless of load pressure

▶ Compact sandwich plate design, can be combined to adapt the control block to the requirements of different machine types

▶ No shuttle valve chain required ▶ Limitation of the maximum system pressure

by LS pressure relief valve ▶ Secondary pressure limitation ▶ Sandwich plate design with a maximum of 12 sections ▶ Type of actuation

– Hydraulic – Electro-hydraulic – Combined hydraulic/electro-hydraulic actuation

▶ Applications: Wheeled excavators, cranes, wheeled loaders, lift trucks and other construction machinery

▶ Sizes 15, 20, 22 ▶ Nominal pressure

– on the pump side 400 bar – on the consumer side 420 bar

▶ Flow – on the pump side:

400 l/min at P port = 1 in, 450 l/min at P port = 1 1/4 in,

– on the consumer side: 400 l/min (LUDV, NG22), 300 l/min (LUDV, NG20), 220 l/min (LS, NG20), 180 l/min (LUDV, NG15)

Modular system 2Combination options for single-circuit systems 4Combination options for dual-circuit systems 8Technical data 10Features and options 11Related documentation 12

Flow sharing control block RSFlexibly configurable valve platform for mobile working machines

RE 64141/2021-09-29Replaces: 2021-08-10

Bosch Rexroth AG, RE 64141/2021-09-29

2 RS | Control blockModular system

Modular system

The modular layout of the RS platform enables individual machine concepts to be developed to optimally meet the respective customer requirements.Directional valves are available in the sizes 15, 20 and 22 and the sandwich plate design enables free combination of any number of valves.Functions with very different flow requirements can thus be combined in one control block according to installation space, weight and effort.

Functions that previously could not be integrated into the main control block can now be combined in one control block. These include the stabilizing module (RSM20), the priority module (RBM15) and the anti-drift valve (ADV).

Features ▶ Free combination of LUDV, LS and anti-drift

valve sections ▶ One-sided electro-hydraulic control ▶ Electro proportional return flow pressure adjustment

for cavitation-free movement or efficient movement without counter-pressure (inlet with double ports)

▶ Self-venting control covers to quickly and sustainably let air out of the cover

▶ Asymmetrical return flow channels (The channel R1 which is assigned to the consumer connections A has been enlarged in its cross section in order to optimally discharge high return flow quantities (of the cylinder bottom side).)

Further information ▶ For directional valves RS15, see data sheet 64134 ▶ For directional valves RS20 and bypass priority module

RBM15, see data sheet 64137 ▶ For stabilizing module RSM20, see data sheet 64628

RS configuratorThe RS configurator is available online. It helps to efficiently utilize the flexibility and versatility of the valve right from the design and engineering phase for new machines. This user-friendly and intuitive program asks systematic questions about the specific requirements for the system. It then assembles the corresponding control block from individual components. Technical data sheets, parts lists, circuit diagrams, and both 2D and 3D information are available on short notice and speed up the development process of the working machine.Link:https://www.boschrexroth.com/ics/modules/configu

ration/?Configurator=RS&Modelcode=RS-Konfigurator

▼ Overview of available sections

Designation Code

LUDV section RS15 F

LUDV section RS15 WL (wheeled loader) 1)

LUDV section RS20 U

LUDV section RS22 G

LS section RS20 S

ADV section RS20 A

Universal inlet for RS20/15, RS20/20 B

Universal inlet for RS20/15, RS20/20 or dual-circuit systems

D

Inlet with double ports RS20/15 E

Stabilizing module RSM20 R

Bypass priority module RBM15 P

Summation module for dual-circuit systems M

End plate RS15 or RS20 T

End plate RS15 "Multi-application" 1)

1) Not available in configurator

RE 64141/2021-09-29, Bosch Rexroth AG

3 Control block | RS Modular system

RepresentationThe individual sections are illustrated in this data sheet as follows:

RS20 LUDV (U)

4 1 2 73 4

5 6 8

1

1 Valve type and size2 Functional principle3 Type code (use in RS configurator)4 Position of consumer ports5 Position of electro-hydraulic actuation6 Flange surface O-ring side7 Flange surface O-ring opposite side8 Counting of axes (see application examples)

Examples Simplified Detailed

Directional valve sections

LUDV sectionRS20 LUDV (U) AB

LUDV section with anti-drift valve (ADV)RS20 ADV (A) AB

LS section

RS20 LS (S) AB

End valve section(flange surface on one side) RS20 LUDV (U)

AB

Valve modules

Stabilizing moduleRSM20 (R)

Bypass priority moduleRBM15 (P)

Summation module for dual-circuit systems (multi-circuit module) RMC (M)

Inlets (port at pump)

Universal inlet

RS20/15 (B)

Inlet with double ports(e.g. for wheeled loader) RS20/15 (E) P

End plates

With/without function

RS20 (T)

Bosch Rexroth AG, RE 64141/2021-09-29

4 RS | Control blockCombination options for single-circuit systems

RS20/15 (B/D) RS20 (B/D)

RS20 (T)

RS20 (T)

RBM15 (P)

RS15 (T)

RS20/20 (B/D)

RS20 LS (S)

RS20 LUDV (U)RS20 ADV (A)

RS15 LUDV (F)

RS22 LUDV (G)RS20 LS (S)

RS20 ADV (A) RS20 LUDV (U)

RS22 LUDV (G)RS20 LS (S)

RS20 ADV (A) RS20 LUDV (U)

Combination options for single-circuit systems

▼ Layout with universal inlet

End plate

End valve module

Inlet

Directional valve sections∏0…91)

Directional valve sections∏1…91)

End directional valve section1)

1) Each control block can support up to 12 directional valve sections. More sections on request.

End plate

RE 64141/2021-09-29, Bosch Rexroth AG

5 Control block | RS Combination options for single-circuit systems

Application examples

▼ Wheeled excavator RS20/15

AB

AB

AB

AB

AB

AB

AB

AB

AB

1

2

3

4

5

6

7

8

9

RS15 end plate (T)

RS15 LUDV (F)

RS15 LUDV (F)

RS15 LUDV (F)

RS20/15 universal inlet (B)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LS (S)

▼ Lift truck RS20/15

AB

AB

AB

AB

AB

1

2

3

4

5

RBM15 (P)

RS15 LUDV (F)

RS15 LUDV (F)

RS20/15 universal inlet (B)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

▼ Crane RS20/15

AB

AB

AB

AB

AB

AB

AB

AB

1

2

3

4

5

6

7

8

RS15 end plate (T)

RS15 LUDV (F)

RS15 LUDV (F)

RS15 LUDV (F)

RS20/15 universal inlet (D)

RS22 LUDV (G)

RS20 LS (S)

RS20 LUDV (U)

RS20 LUDV (U)

RS22 LUDV (G)

RS20 end plate (T)

▼ Wheeled excavator RS20

AB

AB

AB

AB

AB

AB

1

2

3

4

5

6

RS20 universal inlet (B)

RS20 LS (S)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LS (S)

▼ Wheeled excavator RS22/20

AB

AB

AB

AB

AB 1

2

3

4

5

RS20 end plate (T)

RS20 LUDV (U)

RS20 LUDV (U)

RS22 LUDV (G)

RS20/20 universal inlet (B)

RS22 LUDV (G)

RS20 LUDV (U)

RS20 end plate (T)

▼ Wheeled excavator RS22/20

AB

AB

AB 1

2

3

RS20 end plate with P port (T)

RS20 LUDV (U)

RS20 LUDV (U)

RS22 LUDV (G)

RS20 end plate (T)

Bosch Rexroth AG, RE 64141/2021-09-29

6 RS | Control blockCombination options for single-circuit systems

▼ Layout with inlet with double ports, e.g. for wheeled loaders, bulldozers

RS20 LS (S)

RS20 LUDV (U)RS20 ADV (A)

RS20/15 (E)RS20 (E)

RS15 LUDV (F)

RS20 (T)

RS20 ADV (A)

RS15 (T)

RBM15 (P)RSM20 (R)

RSM20 (R)

RS20 ADV (A)

RSM20

RS15 LUDV

RS15 WL LUDV

RS15

RS15 RS15Multi-Application

RS22 LUDV (G)RS20 LS (S)

RS20 ADV (A) RS20 LUDV (U)

End plate

End valve module

Valve module

Inlet

Directional valve sections∏0…91)

Directional valve sections∏1…91)

ADV section1),2)

End plate

End directional valve section1)

1) Each control block can support up to 12 directional valve sections. More sections on request.

2) For use of the regeneration function and the double ports at the 1st consumer, the ADV section must be flanged directly to the inlet.

RE 64141/2021-09-29, Bosch Rexroth AG

7 Control block | RS Combination options for single-circuit systems

Application examples

▼ Wheeled loader RS20

AB

AB

AB

P

X2

1

2

3

RSM20 (R)

RS20 inlet with double ports (E)

RS20 ADV (A)

RS20 LUDV (U)

RS20 LUDV (U)

▼ Wheeled loader RS20

AB

AB

AB

AB

P

1

2

3

4

RBM15 (P)

RSM20 (R)

RS20 inlet with double ports (E)

RS20 ADV (A)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

▼ Wheeled loader RS22

AB

AB

AB

P

1

2

3

AB

RS20 inlet with double ports (E)

RS20 ADV (A)

RS20 LUDV (U)

RS22 LUDV (G)

RS20 end plate (T)

▼ Bulldozer RS20

AB

AB

AB

AB

P

1

2

3

4

RS20 inlet with double ports (E)

RS20 ADV (A)

RS20 LUDV (U)

RS20 LUDV (U)

RS20 LUDV (U)

▼ Wheeled loader RS15

1

2

3

4

Multi-application end plate RS15RS15 WL LUDV

RS15 WL LUDV

RS15 LUDV

RS15 LUDV

RSM20

RS15 inlet

Bosch Rexroth AG, RE 64141/2021-09-29

8 RS | Control blockCombination options for dual-circuit systems

RS20/15 (B/D) RS20 (B/D)

RS20 (T)

RS20 (T)

RBM15 (P)

RS15 (T)

RS20/20 (B/D)

RS20/20 (D)

RS20 LS (S)

RS20 LUDV (U)RS20 ADV (A)

RS15 LUDV (F)

RS20 ADV (A)

RS22 LUDV (G)

RS20 LUDV (U)

RS20 LS (S)

RS20 ADV (A)

RS22 LUDV (G)

RS20 LUDV (U)

RS20 LS (S)

RS20 ADV (A)

RS22 LUDV (G)

RS20 LUDV (U)

RS20 LS (S)

RS20 ADV (A)

RS22 LUDV (G)

RS20 LUDV (U)

RS20 LS (S)

RMC22 (M)

End plate

End valve module

Inlet 1

Inlet 2

Summation module

Directional valve sections∏0…91)

Directional valve sections∏0…91)

Directional valve sections∏0…91)

Directional valve sections∏1…91)

End directional valve section1)

1) Each control block can support up to 12 directional valve sections. More sections on request.

Combination options for dual-circuit systems

▼ Layout with universal inlet

End plate

RE 64141/2021-09-29, Bosch Rexroth AG

9 Control block | RS Combination options for dual-circuit systems

Application examples

▼ Wheeled excavator RS22/20/15

AB

1

2

3

4

5

AB

AB

AB

AB

RS15 end plate (T)

RS15 LUDV (F)

RS20/15 universal inlet (B)

RS22 LUDV (G)

Summation module (M)

RS22 LUDV (G)

RS20/20 universal inlet (D)

RS20 LUDV (U)

RS20 LS (S)

RS20 end plate (T)

▼ Wheeled excavator RS22/20

AB

AB

AB

AB

AB

AB 1

2

3

4

6

5

RS20 end plate (T)

RS20 LUDV (U)

RS20 LUDV (U)

RS20/20 universal inlet (B)

RS22 LUDV (G)

Summation module (M)

RS22 LUDV (G)

RS20/20 universal inlet (D)

RS20 LUDV (U)

RS20 LS (S)

RS20 end plate (T)

Bosch Rexroth AG, RE 64141/2021-09-29

10 RS | Control blockTechnical data

Technical data

General RS15 (F) RS15 WL RS20 (U) RS20 (A) RS20 (S) RS22 (G)

Control type LUDV LUDV LUDV LUDV LS LUDV

Weight (approx.)1) kg 8 10 16 18 20 22

Control spool diameter (3-position spool) mm 18 25

Spool stroke mm 8 10 11

Section width (approx.) mm 48 64 67 82 75

Type of actuation(with 23 and 27 bar spring)

Hydraulic (23 and 27 bar) ● ● ● ● ● ●

Electro-hydraulic (27 bar) ● ● ● ● ● ●

Consumer ports A, B G 3/4, 1 1/16

12-UN-2B 3000 PSI

G 1, 1 5/16

12-UN-2B 3000 PSI

DN19 (SAE 3/4 in) 6000 PSI,

DN25 (SAE 1 in) 3000 PSI

DN19 (SAE 3/4 in)

6000 PSI

DN25 (SAE 1 in)

6000 PSI

Ambient temperature range ϑ °C –30 … +100

Priming One-coat paint RAL 5010 (standard)Further colors and two-coat paint on request

Hydraulic RS15 (F) RS15 WL RS20 (U) RS20 (A) RS20 (S) RS22 (G)

Maximum working pressure at port2)

P pmax bar 380 400

A, B pmax bar 420

R1, R2, T, S p bar 30

LS p bar 380

L p bar depressurized

Maximum pilot oil pressure at port

X, a, b p bar 40

Maximum flow at port

A, B qv max l/min 180 200 300 220 400

Hydraulic fluid Mineral oil (HL, HLP) according to DIN 51524, see data sheet 90220. Other hydraulic fluids on request, e.g. environmentally acceptable

fluids per ISO 15380 as specified in data sheet 90221.

Hydraulic fluid temperature range ϑ °C –30 … +100

Maximum permissible temperature difference between control block and hydraulic fluid

∆Tmax K 20

Viscosity range Cold start ν mm²/s 380 … 2000

Warm-up phase ν mm²/s 100 … 380

Recommended range3) ν mm²/s 20 … 100

Permissible range4) ν mm²/s 10 … 380

Maximum admissible degree of contamination of hydraulic fluidCleanliness level per ISO 4406 (c)

Level 20/18/15, we recommend a filter with a minimum retention rate of β10 ≥ 75

Notice ▶ For applications outside these values,

please consult us! ▶ The technical data was determined at a viscosity

of ν = 32 mm2/s (HLPD32; ϑoil = 40±5 °C).

1) The weight is configuration-specific and may vary by several kilograms.

2) The maximum working pressure depends on the connection fitting used.

3) Any operation outside the recommended range results in restrictions.

4) This corresponds, for example on the VG 46, to a temperature range of +5 °C to +85 °C.

RE 64141/2021-09-29, Bosch Rexroth AG

11 Control block | RS Features and options

Features and options

▼ Consumer sections

Feature RS15 (F) RS15 WL RS20 (U) RS20 (A) RS20 (S) RS22 (G)

Regeneration via control spool ○ ○ ○ ○ ▲ ○

4-position spool ○ ○ ○ ○ ○ ○

Lowering brake spool (e.g. for arm) – – ○ ○ – ○

Priority optimization for combined movement Boom/rotation

– – ● ● – ●

Feed valve (secondary side) ● ● ● ● ● ●

Adjustable pressure relief valve ● ● ● ● ● ●

Pressure relief valve with hydraulic pressure cut-off/sequencing stage

– – ● ● ● ●

Proportional pressure relief valve – – ● ● ● ●

Port for pressure sensor (consumer pressure) – – – – – ○

Position sensor ▲ ▲ ▲ ▲ ▲ ▲

● = Available ○ = Optional ▲ = On request – = Not available

▼ Inlets and end plates

Feature Inlet (B) Inlet (D) (single-circuit)

Inlet (D) (dual-circuit)

Inlet (E) End plate (T)

Port P, LS ● ● ● ● ○

Port T or S ● ● – ● ○

Return flow pre-charge R ● (2×)

– – ▲ (1×)

–

Return flow pre-charge R, proportionally variable ● (2×)

– – ● (1×)

–

Pilot pressure generation and cut-off ○ – – ○ –

Unloading valve and flow controller ● ● ● ● –

LS pressure relief valve ● ● ● ● –

Primary pressure relief valve ● – – – –

● = Standard ○ = Optional ▲ = On request – = Not available

Bosch Rexroth AG, RE 64141/2021-09-29

Bosch Rexroth AGZum Eisengießer 197816 Lohr am MainGermanyPhone +49 9352 18-0Gruppenpostfach.Sales_Productowner_LUDV@boschrexroth.dewww.boschrexroth.com

© Bosch Rexroth AG 2021. 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.

12 RS | Control blockRelated documentation

Related documentation

Product-specific documentation

Document type Title Document number

Instruction manual Control blocks for mobile applications 64025-B

Data sheet Flow sharing control block in sandwich plate design RS15 64134

Flow sharing control block in sandwich plate design RS20 64137

Stabilizing module RSM20 64628