Pressure switch, Manual adjustment

hydraulic sensor

Material #: R901106509

$395.00

Pressure switch, Manual adjustment
The hydro-electric pressure switch type HED 8 is a piston type pressure switch. If the pressure to be monitored is below the set pressure, the micro switch is operated. This switches the electric circuit on or off, depending on the circuit set-up
Benefits

  • Conform with CE, CCC, UL, RoHS

Quantity in stock: 30

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materialR901106509
AccessoriesR901017012
Shipping height75 mm
Shipping length122 mm
Shipping weight estimated765.6 g
Shipping width40 mm
Catalog link"https://www.boschrexroth.com/various/utilities/mediadirectory/download/index.jsp?object_nr=RE50061"
Datasheet nameRE50061
Adjustment typeSpindle with internal hexagon, without scale, with protective cap, sealing
Connection thread-
Connectorappliance inlet 3-pol (2 + PE&
Model CodeHED 8 OP-2X/100K14S
MountingSubplate mounting
Pressure rating100 bar
Seal materialNBR seals
Series2X
Special Version-
qty30.000

The hydro-electric pressure switch type HED 8 is a piston type pressure switch. It basically comprises of housing (1), installation kit with piston (2), compression spring (3), adjustment element (4) and micro switch (5).

If the pressure to be monitored is below the set value, the micro switch (5) is operated. The pressure to be monitored is applied via the nozzle (7) at the piston (2). The piston (2) is supported by the spring plate (6) and acts against the continuously adjustable force of the compression spring (3). The spring plate (6) transmits the movement of the piston (2) onto the micro switch (5) and releases the latter when the set pressure is reached. This switches the electric circuit on or off, depending on the circuit set-up. The mechanical positive stop of the spring plate (6) protects the micro switch (5) in case of a sudden pressure drop from mechanical destruction and, in case of overpressure, prevents solid compression of the compression spring (3).

Notices:

In order to increase the life cycle, the pressure switch should be mounted with low vibrations and protected from hydraulic pressure surges.

Type HED 8 OH-2X/…K14
Type HED 8 OH-2X/…K14S

Type HED 8 OP-2X/…K14A
Type HED 8 OP-2X/…K14AS

Type HED 8 OA-2X/…K14KW
Type HED 8 OA-2X/…K14KS

01

Piston type pressure switch

HED8

02

Flange connection (ISO 16873)

1)

OH

Subplate mounting

OP

Pipeline installation

OA

03

Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions)

2X

04

Pressure rating maximum 50 bar

50

Pressure rating maximum 100 bar

100

Pressure rating maximum 200 bar

200

Pressure rating maximum 350 bar

350

Pressure rating maximum 630 bar

630

Electrical connection

05

Individual connection

Without mating connector; connector DIN EN 175301-803

K14 3)

Without mating connector, 4-pole with connector M12x1, integrated interference protection circuit, status LED according to IEC 60947-5-2

K35 3)

Adjustment type

06

Spindle with internal hexagon, without scale, without protective cap

no code

Spindle with internal hexagon, without scale, with protective cap, sealable

S

Spindle with scale, without protective cap

A5)

Spindle with scale, with protective cap

AS5)

Lockable rotary knob with scale

KS4; 5)

Rotary knob with scale

KW 5)

Seal material

07

NBR seals

no code

FKM seals

V

Low-temperature seals (max. 315 bar)

MT

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

08

Further details in the plain text

1) Sandwich plate for vertical stacking, separate order see accessories
2) Not admissible for vertical stacking, not with low-temperature seals, without UL approval
3) Mating connectors, separate order, see accessories
4) H-key, material no. R900008158, is included in the scope of delivery
5) Exact setting of the switching pressure is only possible by means of a pressure gauge (scale only serves as orientation)

Type

Component series

2X

General

Weight

m

kg

0.8

Installation position

any

Ambient temperature ranges (NBR seals)

ϑ

°C

-25 … +50

Ambient temperature ranges (FKM seals)

ϑ

°C

-20 … +50

Ambient temperature range (low-temperature seal)

ϑ

°C

-40 … +50

Sine test

DIN EN 60068-2-6:1996-05: 10…2000 Hz / max. 10 g / 10 double cycles

Transport shock

DIN EN 60068-2-27:1995-03: 15 g / 11 ms

Bump test

DIN EN 60068-2-29:1995-03: 25 g / 6 ms

Noise test

DIN EN 60068-2-64:1996-05: 20…2000 Hz / 10 g RMS / 30 min

Conformity/certification

CE

DIN EN 61058-1: 2002 / A2: 2008
DIN EN 60947-1: 2007 / A1: 2011
DIN EN 60947-5-1: 2004 / A1: 2009
DIN EN 60529: 1991 / A2: 2013

UL

UL, 508 17th edition File No E223220 (up to 350 bar)

CCC

GB 14048.5-2008

RoHS

Compliant according to EU directive 2011/65/EU

Hydraulisch

Pressure rating

p

bar

50 100 200 350 630

Operating pressure NBR/FKM seals, max.

p

bar

350 400 630

Pressure adjustment range (decreasing)

p

bar

5 … 50 10 … 100 15 … 200 25 … 350 40 … 630

Pressure differential per rotation 1)

p

bar

≈ 19 ≈ 35 ≈ 77 ≈ 120 ≈ 214

Hydraulic fluid 1)

see table below

Hydraulic fluid temperature range (NBR seals)

ϑ

°C

-25 … +80

Hydraulic fluid temperature range (FKM seals)

ϑ

°C

-20 … +80

Hydraulic fluid temperature range (low-temperature seals)

ϑ

°C

-40 … +80

Viscosity range

μ

mm²/s

10 … 800

Maximum admissible degree of contamination of the hydraulic fluid 2)

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

Load cycles

≥ 5 million
1) Direction of rotation:
clockwise → Set pressure increase
counterclockwise → Set pressure decrease
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

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP

NBR, FKM

DIN 51524

HVLP

Low-temperature design MT

Bio-degradable

Insoluble in water

HETG

NBR, FKM

ISO 15380

HEES

FKM

Soluble in water

HEPG

FKM

ISO 15380

Flame-resistant

Containing water

HFC

NBR

ISO 12922

Important information on hydraulic fluids!

Further information and information on the use of other hydraulic fluids on request!

Elektrisch

Anschlussart

With connector "K14"

EN 175301-803, 3-pole + PE

With connector "K35"

IEC 61076-2-101, M12 x 1, A coding, 4-pole

Protection class according to DIN EN 60529

With connector "K14"

IP65 with mating connector mounted and fitted

With connector "K35"

IP 67 with mating connector mounted and fitted

Switching frequency, max.

1/h

7200

Switching accuracy (repetition accuracy)

< 1 % of the set pressure

Switch

according to VDE 0630-1/DIN EN 61058-1

Transition resistance

R

< 50

Insulation coordination

Überspannung Kategorie 3

Contamination

Degree of contamination 3

Bounce time

On

t

ms

< 5

Off

t

ms

< 5

Current, min.

I

mA

1.0 with 24 V DC

Current, max.

With connector "K14"

I

A

0.5 with 50 V DC, inductive
0.2 with 125 V DC, inductive
0.1 with 250 V DC, inductive
2.0 with 250 V AC

With connector "K35"

I

A

0.5 with 48 V DC, inductive
2.0 with 48 V DC, ohmic load

Switching power

Switching cycles

Voltage U in V

Ohmic load max. in A

Inductive load, max. in A

With connector "K14"

2 million

250, AC

2 A for 2 million switching cycles (AC-12)

0.5 A, cos. ϕ = 0.6 for 2 million switching cycles (DC-12)

With connector “K14” and “K35”

2 million

24, DC

2 A for 2 million switching cycles (AC-12)

0.5 A for 2 million switching cycles 3)

5 million

24, DC

5.0 mA for 5 million switching cycles (DC-12)

For applications outside these parameters, please consult us!

Switching pressure differential (measured with HLP46, ϑOil = 40 ±5 °C)

Pressure rating 50 bar

Pressure rating 100 bar

Pressure rating 200 bar

Pressure rating 350 bar

Pressure rating 630 bar

Notices:

The switching pressure differential may increase within the course of the life cycle due to the deterioration of the oil quality and the number of load cycles.

"K14" without indicator light

"K14" with indicator light

"K35"

Switching function

Terminals 1-2: In case of pressure increase, contact opens

Terminals 1-3: In case of pressure increase, contact closes

Switching function

Terminals 1-2: In case of pressure increase, contact opens

Terminals 1-4: In case of pressure increase, contact closes

Notice:

For general information on safety, installation or commissioning, see operating instructions.

Type HED 8 …K14

Dimensions in mm

1

Adjustment type "KW"

2

Adjustment type "KS"

3

Adjustment type "–"

4

Adjustment type "S"

5

Adjustment type "A"

6

Adjustment type "AS"

7

Seal ring

8

Space required to remove the key

9

Space required to remove the mating connector

10

Hexagon SW27 (with adjustment type "KS")

11

Internal hexagon SW10

12

Mating connector without circuitry for connection "K14” (separate order)

13

Mating connector with circuitry for connection "K14” (separate order)

17

Valve mounting screws (separate order) for type HED 8 OH…

2 hexagon socket head cap screws, metric

ISO 4762 - M5 x 55 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 6+0.5 Nm,

Material no. R913000261

 

18

Maximum diameter of the connection bore of the counterpart (type HED 8 OH…)

19

Maximum diameter of the connection bore of the counterpart (type HED 8 OP…)

20

Valve mounting screws (separate order) for type HED 8 OA… and …OP…

2 hexagon socket head cap screws, metric

ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 7+0.5 Nm,

Material no. R913000064

Type HED 8 …K35

Dimensions in mm

1

Adjustment type "KW"

2

Adjustment type "KS"

3

Adjustment type "–"

4

Adjustment type "S"

5

Adjustment type "A"

6

Adjustment type "AS"

7

Seal ring

8

Space required to remove the key

9

Space required to remove the mating connector

10

Hexagon SW27 (with adjustment type "KS")

11

Internal hexagon SW10

14

Mating connector for connection "K35" (separate order)

15

Mating connector suitable for "K35", angled (separate order)

16

Mating connector for connection "K35", with cable (separate order)

17

Valve mounting screws (separate order) for type HED 8 OH…

2 hexagon socket head cap screws, metric

ISO 4762 - M5 x 55 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 6+0.5 Nm,

Material no. R913000261

 

18

Maximum diameter of the connection bore of the counterpart (type HED 8 OH…)

19

Maximum diameter of the connection bore of the counterpart (type HED 8 OP…)

20

Valve mounting screws (separate order) for type HED 8 OA… and …OP…

2 hexagon socket head cap screws, metric

ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 7+0.5 Nm,

Material no. R913000064

Type HED 8 OH… in vertical stacking NG6

1

Pressure switch HED 8 OH… for use in stacking assemblies (can be assembled staggered by 4 x 90°)
The mounting option of the pressure switch depends on the set-up of the next stacking assembly subplate.

2

Sandwich plate type HSZ 06A... for use of the pressure switch as stacking element

3

Space required to remove the key

4

Space required to remove the mating connector

Mating connector

H1

H2

H3

Port “K14”, without circuitry

87

65

15

Port “K14”, with circuitry

92

70

15

Port “K35”, angled

92

70

10

Port “K35”, straight

111

89

10

Type HED 8 OH… in vertical stacking NG10

1

Pressure switch HED 8 OH… for use in stacking assemblies (can be assembled staggered by 4 x 90°)
The mounting option of the pressure switch depends on the set-up of the next stacking assembly subplate.

2

Sandwich plate type HSZ 10A... for use of the pressure switch as stacking element

3

Space required to remove the key

4

Space required to remove the mating connector

Mating connector

H1

H2

H3

Port “K14”, without circuitry

100

65

15

Port “K14”, with circuitry

105

70

15

Port “K35”, angled

105

70

10

Port “K35”, straight

124

89

10

Mating connectors for mechanical pressure switches with connector “K14”, without circuitry, standard

4P Z14

Mating connectors for mechanical pressure switches with connector “K14”, without circuitry, standard

4P Z14

For mechanical pressure switches with connector “K14”, according to EN 175301-803 and ISO 4400, 3-pole + PE, “large cubic connector”

Data sheet

Spare parts & repair

Mating connectors for mechanical pressure switches with connector “K14”, with indicator lights at connections 2 and 3

4P Z15L

Mating connectors for mechanical pressure switches with connector “K14”, with indicator lights at connections 2 and 3

4P Z15L

For mechanical pressure switches with connector “K14”, according to EN 175301-803 and ISO 4400, 3-pole + PE, “large cubic connector”

Data sheet

Spare parts & repair

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

Mating connectors for sensors and valves with connector “K24”, “K35” and “K72”, M12 x 1

4P Z24

For sensors and valves with connector “K24”, “K35” and “K72” Mating connectors M12, 4-pole, line cross-section 0.75 mm2

Data sheet

Spare parts & repair

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