2/2 proportional directional valve, 1) direct operated pdfs/brh prop valve/brh kkdsr1_re18139...the...

1/10

Information on available spare parts: www.boschrexroth.com/spc

2/2 proportional directional valve, direct operated

Type KKDS (high-performance)

RE 18139-09/04.09

Table of contents Features

– Mounting cavity R/T-5A– Direct operated proportional valve for controlling the amount

of a flow– Actuation by means of proportional solenoid with central

thread and detachable coil– Rotatable solenoid coil– Flow possible in both directions– With concealed manual override, optionally– Control electronics:

• Analog amplifier RA2-1/10 • Plug-in amplifier VT-SSPA1 ...

H7568

Contents PageFeatures 1Ordering code 2Standard types 2Function, section, symbol 3Technical data 4Characteristic curves 5Performance limits 5Minimum terminal voltage at the coil 6Unit dimensions 7Mounting cavity 8Available individual components 9

Size 2Component series AMaximum operating pressure 350 barMaximum flow 58 l/min

InhaltTable of contents 1Features 1Ordering code 2Standard types 2Function, section, symbol 3Technical data (For applications outside these parameters, please consult us!) 4Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5 °C) 5Performance limits (measured with HLP46, ϑoil = 40 °C ± 5 °C) 5Minimum terminal voltage at the coil and relative duty cycle 6Unit dimensions (dimensions in mm) 7Mounting cavity R/T-5A1); 2 main ports; thread 1-14 UNS-2B

(dimensions in mm) 8Available individual components 9Notes 10Notes 11Notes 12

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2/10 Bosch Rexroth AG Hydraulics KKDS RE 18139-09/04.09

Ordering code

Direct operated proportional directional valve

Maximum operating pressure 350 bar = RSize = 2

2 main ports

Sym

bol

2

1

Normally closed = N

Series = AHigh-performance and mounting cavity R/T-5A = H (see page 8)Proportional solenoid, wet-pin = C

Further details in the plain text

Seal materialV = FKM seals

Attention!Observe compatibility of seals

with the hydraulic fluid used!Electrical connection 1)

K4 = Without mating connector with connector DIN EN 175301-803

C4 = Without mating connector with connector AMP Junior-Timer

N0 = Without manual overrideN9 = With concealed manual override

Supply voltageG24 = Control electronics DC 24 VG12 = Control electronics DC 12 V

KKDS R 2 N A H C V *

Standard types

1) Mating connectors (order separately) see RE 08006

Type Material no.

KKDSR2NA/HCG24N9K4V R901074596KKDSR2NA/HCG12N9K4V R901036359KKDSR2NA/HCG24N9C4V R901055340

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2

1

2

1

3 5 6 8 7 4

Hydraulics Bosch Rexroth AGRE 18139-09/04.09 KKDS 3/10

Function, section, symbol

GeneralThe 2/2 proportional directional valve is a direct operated car-tridge spool valve. It steplessly regulates the flow proportion-ally to the input signal form from main port ① to ②.The valve basically comprises a sleeve (6) with male thread for the mounting cavity, bushing (3), control spool (5) with compression spring (8) as well as proportional solenoid (7) with central thread and detachable coil.

Symbol

Version “C4”

FunctionWith de-energized solenoid (7), the control spool (5) that is al-ways pressure-compensated to the actuating forces due to its constructive design is held in the initial position by the com-pression spring (8) and blocks the flow between main port ① and ②. By energizing the solenoid (7), the control spool (5) is adjusted directly – proportional to the electrical input signal – and, via orifice-like cross-sections with progressive flow char-acteristic in the spool, connects the main ports ① and ②. In case of de-energization of the solenoid (7), the compression spring (8) returns the control spool (5) to its initial position.The manual override (4) allows for operation of the valve with-out solenoid energization.

Type KKDSR2NA/HC.N9K4V

Version “K4” (with mating connector)

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Technical data (For applications outside these parameters, please consult us!)

electrical Type of voltage Direct voltage (DC)Supply voltage V 12 24Maximum solenoid current A 1.8 1.2Coil resistance – Cold value at 20 °C Ω 3.3 7.2

– Max. hot value Ω 5.8 13.0Duty cycle % 100Maximum coil temperature 3) °C 150Protection class according to VDE 0470-1 (DIN EN 60529) DIN 40050-9

– Version “K4” IP 65 (with mating connector mounted and locked)– Model “C4” IP 66 (with mating connector mounted and locked)

IP 69K (with Rexroth mating connector, Material no. R901022127)Control electronics 4) Analog amplifier RA2-1/10 see RE 95230

Plug-in amplifier VT-SSPA1-1.. see RE 30116Design according to VDE 0580

hydraulicMaximum operating pressure bar 350 Maximum flow l/min 58Step response 0 to 100 %; 100 to 0 % ms < 180 (with pS = 10 bar)Hydraulic fluid Mineral oil (HL, HLP) according to DIN 51524; quickly bio-

degradable hydraulic fluids according to VDMA 24568 (see also RE 90221); HETG (rape seed oil); HEPG (polyglycoles); HEES (synthetic esters); other hydraulic fluids upon request

Hydraulic fluid temperature range °C –40 to +100 (preferably +40 to +50)Viscosity range mm2/s 20 to 380 (preferably 30 to 46)Maximum permitted degree of contamination of the hydraulic fluid - cleanliness class according to ISO 4406 (c)

Class 20/18/15 1)

Hysteresis 2) % ≤ 5Range of inversion 2) % ≤ 2Response sensitivity 2) % ≤ 1

generalWeight kg 0.84Installation position Any – if it is ensured that no air can collect upstream the

valve. Otherwise, we recommend suspended installation of the valve.

Ambient temperature range °C –40 to +100Storage temperature range °C –40 to +110

1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Efficient filtration prevents malfunctions and at the same time prolongs the service life of components.

For the selection of filters, see data sheets RE 50070, RE 50076, RE 50081, RE 50086 and RE 50088.

2) Measured with analog amplifier RA2-1/10 acc. to RE 95230At the electrical connection “K4”, the protective earth-ing conductor (PE ) has to be connected properly.

3) Due to the temperatures occurring at the surfaces of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to!

4) Separate order

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0 50 100 150 200 250 300 3500

10

20

30

40

50

60

12

3456

7

20 30 1000

10

20

30

40

50

60

5

4

21

40 50 60 70 80 90

3


Characteristic curves (measured with HLP46, ϑoil = 40 °C ± 5 °C)

Command value in %→

Pressure differential in bar →

Flow

in l/

min

→Fl

ow in

l/m

in →

1 Command value = 40 %2 Command value = 50 %3 Command value = 60 %4 Command value = 70 %5 Command value = 80 %6 Command value = 90 %7 Command value = 100 %

1 ∆p = 10 bar constant2 ∆p = 20 bar constant3 ∆p = 30 bar constant4 ∆p = 50 bar constant5 ∆p = 100 bar constant

Performance limits (measured with HLP46, ϑoil = 40 °C ± 5 °C)

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-40 -20 0 2060

65

70

80

85

100

105

75

90

95

40 60 80 100 120

1

2

25

35

45

55

65

75

85

95

-40 -20 0 2060

65

70

80

85

100

105

75

90

95

40 60 80 100 12030

35

40

45

50

55

60

65

1

2


Minimum terminal voltage at the coil and relative duty cycle

Ambient temperature in °C →

Ambient temperature in °C →

Min

imum

term

inal

vol

tage

at t

he c

oil in

% to

the

nom

inal

sup

ply

volta

ge →

Min

imum

term

inal

vol

tage

at t

he c

oil in

% to

the

nom

inal

sup

ply

volta

ge →

Rela

tive

duty

cyc

le in

% →

Rela

tive

duty

cyc

le in

% →

1 Relative duty cycle2 Minimum terminal voltage at the coil

– with 12 V supply voltage against the ambient temperature

– with 24 V supply voltage against the ambient temperature

Note!The characteristic curves have been determined for coils with valve with medium test block size (80 x 80 x 80 mm), without flow in calm air.Depending on the installation conditions (block size, flow, air circulation, etc.) there may be a better heat dissipation. Thus, the range of application is broadened.In single cases, there may be more unfavorable conditions leading to limitations of the operating range.

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2

1

5

45

8615

75,5

101,5

LS0

4

1 2

3

635

41,42


Unit dimensions (dimensions in mm)

1 Mating connector “K4” without circuitry (separate order, see RE 08006)

2 Space required for removing the mating connector3 Concealed manual override4 36 A/F, tightening torque MT = 60 to 65 Nm5 Mating connector “C4”

(separate order, see RE 08006)

1 = Main port 12 = Main port 2

LS = Positive stop shoulder (location shoulder)

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0,05 A-B

26,19+0,05A

27,38+0,05

min 42 1; 3)

0,8

... 1

,6m

ax

22,2

min

50,

8 2)

+0,3

2

1

“X”

“Y”

LS0

Rz 16

26,67+0,1

Rz 16

A-B0,05

0,05 ARzmax 8

R0,8

Rzmax 8 0,05 B

-0,2 +0,2

Rz 321)

Rz 16

Rz 16

1-14 UNS-2B

0,05 A-B

40,

1

min

15,

9

41,4

7+0,

12

LS0

17,5 0,1

22,23+0,05B

23,7+0,10,05 A-B

0,05 A

0,2 A-B

3045

45

32,9

0,1

21,4

0,1


Mounting cavity R/T-5A1); 2 main ports; thread 1-14 UNS-2B (dimensions in mm)

1 = Main port 12 = Main port 2

LS = Positive stop shoulder (location shoulder)1) Differing from T-5A2) Depth for moving parts3) In case of countersink

All seal ring insertion chamfers are rounded and free of burrsTolerance for all angles ±0.5°

Standards:

Workpiece edges DIN ISO 13715Form and position tolerance DIN EN ISO 1101General tolerances for metal-cutting processes

DIN ISO 2768-mK

Tolerance DIN ISO 8015Surface quality DIN EN ISO 1302

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Available individual components

999

157

159

Part Description Direct voltage Material no.157 Coil for individual connection K4 12 V

24 VR901022180 R901022174

C4 12 V 24 V

R901022680 R901022683

158 Nut R900029574159 O-ring for pole tube R900002507999 Seal kit of the valve R961004435

158

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Bosch Rexroth AG HydraulicsZum Eisengießer 197816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 Fax +49 (0) 93 52 / 18-23 [email protected] www.boschrexroth.de

© This document, as well as the data, specifications and other informa-tion 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.The data specified above only serve to describe the product. No state-ments concerning a certain condition or suitability for a certain applica-tion 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.


Notes

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Notes

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2/2 proportional directional valve, 1) direct operated pdfs/brh prop valve/brh kkdsr1_re18139...the...

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