PRESSURE SWITCH HED 8 OA-2X/50K14KW
Manufacturer: Bosch Rexroth
Material #: R901102754
Model : HED 8 OA-2X/50K14KW
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth HED 8 OA-2X/50K14KW (R901102754) is a high-precision piston type hydraulic pressure switch designed for versatile applications. This component is engineered to monitor and control pressure with exceptional accuracy and reliability. It features a micro switch with both normally closed (NC) and normally open (NO) contact functions, allowing for potential-free switching of currents ranging from milliamps to 0.5 amps. The switch's small hysteresis ensures minimal deviation from the set switching point, while its high repetition accuracy falls below 1% of the set pressure.
This model is equipped with NBR seals and can handle various hydraulic fluids including HL, HLP, HLPD, HVLP, and HVLPD types. Its robust design includes a rotary knob with a scale for easy adjustment without the need for a mating connector. The electrical connection is facilitated by a large cubic connector that conforms to DIN EN standards, including a Connector pole PE.
The HED 8 OA-2X/50K14KW offers flexible installation options such as pipeline installation or subplate mounting and can be used as a flange connection according to ISO standards or as a vertical stacking element in conjunction with sandwich plates. It supports supply voltages from 24 to 240 V AC/DC and has CE, CCC, UL, and RoHS conformity certifications.
With maximum operating pressures up to 315 bar and adjustable pressure ratings of 50 bar among others, this device caters to diverse industrial requirements. It also comes in various adjustment types like spindle with or without protective cap or lockable rotary knob with scale. The product's durability is recognized by UL for pressure ranges up to 315 bar and it is also CCC-certified.
The Bosch Rexroth HED series includes several models such as HED 8 OH X K14KW/S variants tailored for specific operational needs while maintaining consistent performance across different environments.
$562.00 USD
Availability: Backordered
Ships from US
Qty:
Delivered as early as December 3, 2026
$590.10 USD
Availability: Backordered
Ships from CA
Qty:
Delivered as early as December 3, 2026
Source From Bosch Rexroth
Unavailable
This product is eligible for factory repair.
50 bar, micro switch with NC contact/NO contact function, device connector DIN EN 175301-803 (large cubic connector)
Potential-free switching of currents from 1 mA to 2.0 A. Small hysteresis, depending on the set switching point. High repetition accuracy < 1% of the set pressure
Unpacked Weight: 0.823 kg
For subplate mounting/pipeline installation For flange connection according to ISO 16873 As vertical stacking element in connection with sandwich plates according to ISO 4401 5 pressure ratings 4 adjustment types:– Spindle with/without protective cap– Spindle with scale, with/without protective cap– Rotary knob with scale– Lockable rotary knob with scale Electrical connection– with valve plug-in connector design A (large cubic connector)– with M12 x 1 connector Micro switch with NC/NO contact function Potential-free switching of currents from 1 mA to 2 A UL approval for pressure ranges up to 350 bar
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
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°) |
|
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°) |
|
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 mm2Data sheet
Spare parts & repair
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