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BOSCH REXROTH
KKDER8PA/HN9V
R901069978
Directional Spool Valves

Sv st do 3/2 SZ08 SAE Std no opt

$105.57

BOSCH REXROTH

MATERIAL:  R901069978

SUMMARY:  Sv st do 3/2 SZ08 SAE Std no opt

Quantity in stock: 2

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General information

The 2/2 directional spool valves are direct operated, pressure-compensated screw-in cartridge valves. They control the start, stop and direction of flow and basically consist of housing (1), control spool (4) and a return spring (2).

Function

In the de-energized condition, the control spool (4) is held in the initial position by the return spring (2). The control spool (4) is actuated by wet-pin DC solenoids (3). The symbols are realized by different spools (N and P). The main ports ➀ and ➁ can be loaded continuously with an operating pressure of 350 bar and the flow can be directed into both directions (see Symbols).

The manual override (5) allows for the switching of the valve without solenoid energization. It is also available in screwable version"N10" (6) (see Type keys).

Version "K4" (with mating connector)

Type KKDER8NA/HN9V

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Version "C4"

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

(valve without coil)1)

01

02

03

04

05

06

07

08

09

KKDE

R

8

A

/

H

V

*

01

Directional spool valve, direct operated, electrically operated (pilot valve)

KKDE

02

Maximum operating pressure 350 bar

R

03

Component size

8

04

2 main ports

Symbols

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

N

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

P

05

Component series

A

06

High Performance and mounting cavity R/T-8A (see mounting cavity)

H

07

Without manual override

N0

With concealed manual override

2)

N9

Seal material

08

FKM seals (other seals upon request)

V

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

09

Further details in the plain text

*

1) Complete valves with mounted coil on request.

2) Screwable manual override "N10" (actuation by means of internal hexagon with lock nut), can be ordered separately, material no. R901051231; ordering code “N9”!

general

Size

8

Installation position

any

Ambient temperature range

°C

-40 … +110

Weight

Valve

kg

0.3

Coil

kg

0.25

hydraulic

Size

8

Maximum operating pressure 1)

bar

350

Maximum flow

l/min

45

Hydraulic fluid

see table

Hydraulic fluid temperature range

°C

-40 … +80

Viscosity range

mm²/s

4 … 500

Maximum admissible degree of contamination of the hydraulic fluid 2)

Class 20/18/15 according to ISO 4406 (c)

Fatigue strength according to ISO 10771

10 million (at 350 bar)
1) At all ports
2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid

Classification

Standards

Mineral oil

HL, HLP

DIN 51524

Bio-degradable

Insoluble in water

HEES (synthetic esters)

VDMA 24568

HETG (rape seed oil)

Soluble in water

HEPG (polyglycols)

VDMA 24568

Other hydraulic fluids on request

electrical

Voltage type

Direct voltage

Power supply 1)

V

12
24

Voltage tolerance against ambient temperature

see voltage tolerance characteristic curve

Power consumption

W

22

Duty cycle

%

100

Maximum coil temperature 2)

°C

150

Switching time according to ISO 6403

ON

ms

≤ 80

OFF

ms

≤ 50

Maximum switching frequency

1/h

15000

Protection class according to DIN EN 60529 (VDE 0470-1), DIN 40050-9

Version "K4"

IP65 (with mating connector mounted and locked)

Version "C4"

IP66 with mating connector mounted and locked
IP69K with Rexroth mating connector (material no. R901022127)

Version "K40"

IP69K with mating connector mounted and locked
1) Other voltages upon request
2) Due to the surface temperatures of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to!

With the electrical connection "K4", the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.

For applications outside these parameters, please consult us!

Voltage tolerance against ambient temperature; duty cycle

Voltage range and duty cycle dependent on the ambient temperature

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

(measured with HLP46, ϑoil = 40 ±5 °C) and 24 V coil

Δp-qV characteristic curves – Symbol N

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Δp-qV characteristic curves – Symbol P

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Performance limits (measured with HLP46, ϑOil = 40 ±5 °C and 24 V coil)

Symbol N

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Symbol P

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Attention!

The performance limit has been determined with the solenoids at operating temperature and with 10 % undervoltage.

Symbol “N”

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Symbol “P”

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

Dimensions in mm

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

1

Mating connectors (separate order)

2

Space required to remove the mating connector

3

Wrench size 24, tightening torque MA = 34 to 41 Nm

4

Dimension for mating connector “K4”, without circuitry

5

Dimension () for mating connector “K4”, with circuitry

6

Version "K40"

7

Version "C4"

8

Nut, tightening torque MA = 5+1 Nm

9

Coil (separate order, see type key)

10

Concealed manual override "N9", optional

11

Screwable manual override "N10" (separate order, see Type keys)

Main port 1

Main port 2

LS

Location shoulder

Mounting cavity R/T-8A; 2 main ports; thread M16 x 1.5 mm

Dimensions in mm

technical illustration-KKDER8PA/HN9V-Sv st do 3/2 SZ08 SAE Std no opt

1) with counterbore, deviating from T-8A

2) All seal ring insertion faces are rounded and free of burrs

3) deviating from T-8A

Main port 1

Main port 2

LS

Location shoulder

Tolerance for all angles ± 0.5 °