Proportional Solenoid for Hydraulic Valves

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Proportional solenoid is an electromechanical motion device which effect mechanical force through electrical power. The function of proportional solenoid is realized by convert the electric signal of proportional amplifier into force and displacement.

A typical solenoid for proportional valves is consist of solenoid coil and solenoid tube assembly. When the solenoid has been electrified, solenoid coil creates a magnetic field, and the magnetic force can trigger the plunger in solenoid tube to move proportionally, and the movement of solenoid plunger will actuate the hydraulic valves.

Proportional solenoid is used in a wide range of electro-hydraulic proportional control systems to power the proportional flow valve, proportional directional valve, proportional pressure relief valve, hydraulic cartridge valves, transmission control valves, etc. In that case, hydraulic proportional solenoid can realize the flow control, direction control, pressure control, throttle position control, EGR control, turbo charger control, transmission clutch control, etc.

Current: Kaidi provides proportional solenoid for both AC & DC current systems.

Brands: as a major solenoid supplier for Rexroth valves, we have mature proportion solenoids for all types of Rexroth proportional valves. Despite of that, we have our own Product Development Center, which are able to provide custom proportional solenoids for your own valves.

Connectors: Kaidi provides proportional solenoid with different types of connectors that meet the DIN 43650 standard.

The Quality Control Department of Kaidi Electromagnetic obeys the strict hydraulic solenoid quality test specifications. Our major solenoid products has been exported to Europe for many years. Kaidi proportional solenoids hold the following advantages:

  • Large force power
  • Simple structure
  • High precision control
  • Average requirements of hydraulic fluid (oil)
  • Easy maintenance
  • Reasonable price


a picture of Kaidi proportional solenoid products

Hydraulic Proportional Solenoid (screw type)

Kaidi has three series of screw thread hydraulic solenoid for proportional valves, GP37, GP516, and GP63 solenoids for proportional valves. Proportional solenoids normally used with proportional amplifier to control the position of hydraulic proportional valve spool accurately. Under the nominal current and stroke, the output magnetic force is proportional to the input current.

Table 1 Screw Type Hydraulic Solenoid Assembly for Proportional Valves Catalogue

SERIES IMAGE RATED CURRENT

(A)

RATED

STROKE

(mm)

RATED

FORCE

(N)

APPLICATION PDF

DOWNLOAD

GP37-S-A Proportional Solenoid   2 2.2 40 proportional flow valve, proportional directional valve  
GP37-S-C Proportional Solenoid   0.6 2 35 proportional flow valve, proportional directional valve  
GP516-S-A Proportional Solenoid   2.5 2.8 50 REXROTH Proportional valve (NG6)  
GP516-S-B Proportional Solenoid   2.5 2.5 50 REXROTH Proportional valve (NG6)  
GP516-S-C Proportional Solenoid   2.5 1.8 90 REXROTH Proportional valve (NG6)  
GP516-S-E Proportional Solenoid   2.5 1.8 65 REXROTH Proportional valve (NG6)  
GP63-S-A Proportional Solenoid   3.3 4 170 REXROTH Proportional valve (NG10)  
GP63-S-B Proportional Solenoid   2.6 4 170 REXROTH Proportional valve (NG10)  
GP63-S-C Proportional Solenoid   2.5 4 160 REXROTH Proportional valve (NG10)  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

 

Hydraulic Proportional Solenoid (bolt type)

Kaidi has four series of hydraulic solenoids for proportional valves with bolt connection, GP45, GP61, GV45, and GH263 proportional solenoids. These series of solenoids for proportional valves often used in DC12V or DC 24V hydraulic proportional control systems. The input current can be changed illimitably under certain range, therefore, under the nominal range, the hydraulic stepless speed change, direction switching, and teleoperation can be realized.

Table 2 Bolt Type Hydraulic Solenoid Assembly for Proportional Valves Catalogue

SERIES IMAGE RATED CURRENT

(A)

RATED

STROKE

(mm)

RATED

FORCE

(N)

APPLICATION PDF

DOWNLOAD

GP45-4-A

Proportional Solenoid

  0.8 3 80 REXROTH proportional flow valve, proportional directional valve  
GP45-A4-A  Proportional Solenoid   0.8/1.5 3 80 REXROTH proportional flow valve, proportional directional valve  
GP45-B4-A  Proportional Solenoid   0.8/1.5 4 75 REXROTH proportional flow valve, proportional directional valve  
GV45-4-A  Proportional Solenoid   0.8 1.7 90 REXROTH  proportional pressure relief valve  
GP61-4-A

Proportional Solenoid

  1.51 4.5 150 REXROTH proportional flow valve, proportional directional valve  
GRF35-4-A

Proportional Solenoid

  0.68 2 50 Proportional variable pump, oil hydraulic motor  
GH263-045

Proportional Solenoid

  0.8 3 75 Proportional variable pump, oil hydraulic motor  
GH263-060

Proportional Solenoid

  1.11 4 145 Proportional variable pump, oil hydraulic motor  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

 

Hydraulic Proportional Solenoid (3-pin type)

3-pin type hydraulic solenoid for proportional valves is the power components of hydraulic directional valve and proportional valve, it is mainly used as the electromechanical motor device of various hydraulic guide systems of agricultural machines, environmental sanitary machines, high-speed rails, etc.

Table 3 3-pin Type Hydraulic Solenoid Assembly for Proportional Valves Catalogue

SERIES IMAGE SPECIFICATION

(mm)

RATED VOLTAGE

(V)

RATED STROKE

(mm)

RATED FORCE

(N)

PDF DOWNLOAD
ZC32-S-A

Proportional Solenoid

  Φ32 2.6/1.5 12/32  
GC32-S-A    Proportional Solenoid   Φ32 2.6/1.5 12/32  
ZC36L-S-A   Proportional Solenoid   Φ36.3 DC12、24

AC115、230

2.7 20  
ZC36L-S-ALW    Proportional Solenoid   Φ36.3 DC12、24

AC115、230

2.7 20  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

 

Hydraulic Solenoid for Proportional Valve (GP series)

This GP series of hydraulic solenoid for proportional valve has displacement transducer and screw thread. It is widely used in the electro-hydraulic proportional closed loop control system, equipped with the electro-hydraulic proportional amplifier. The gauge pin of the differential inductance displacement sensor has rigid connection with the armature, which realizes direct inspection of valve pool, thus controlling the position of spool accurately. The GP series proportional solenoid for proportional valve also has wide application in proportional flux valve and proportional directional valve of Rexroth.

Table 4 GP Series Hydraulic Solenoid Assembly for Proportional Valves Catalogue

SERIES IMAGE RATED CURRENT(A) RESISTANCE FORCE AT 20℃(Ω) RATED FORCE (N) RATED STROKE (mm) TOTAL STROKE  (mm) PDF DOWNLOAD
GP45A4-AIW9 Proportional Solenoid   0.8/1.5 19.5/5.4 80 3 6  
GP45B4-AIW9 Proportional Solenoid   0.8/1.5 19.5/5.4 75 4 6  
GP61-4-A Proportional Solenoid   1.51 10 150 4.5 9  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

 

Proportional Solenoid for Overflow Valve

This series of hydraulic solenoid is a kind of electromechanical conversion device mainly used for proportional overflow valves. In the range of rated stroke and rated current, its output force is proportional to the input signal. When used together with the proportional controlling amplifier, the proportional solenoids for overflow valve is able to control the position of the electro-hydraulic proportional valve precisely. Our proportional solenoids for overflow valve can be mainly divided into GV40-4-A and GP80-4-A.

GV40-4-A proportional solenoid for overflow valve is suitable for many different electro-hydraulic proportional valves, such as: pilot type proportional solenoids for overflow valve, proportional pressure reducing valve and electric proportional valve (PQ valve), etc.

GP80-4-A proportional solenoid for overflow valve has the characteristics of long linear working stroke, high repetition precision and large output force. It is often used as the power element of directly controlled proportional solenoids for overflow valve, proportional flow valve, proportional throttle valve and Electro-hydraulic proportional compound valve (PQ valve).

Table 5 Hydraulic Solenoid Assembly for Proportional Overflow Valves Catalogue

SERIES IMAGE RATED CURRENT(A) RESISTANCE FORCE AT 20(Ω) RATED FORCE (N) RATED STROKE (mm) TOTAL STROKE  (mm) PDF DOWNLOAD
GV40-4-A Proportional Solenoid   0.8 10 48 3 3.2  
GP80-4-A Proportional Solenoid   0.68 40 100 8 ≥9  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

 

Hydraulic Solenoid for Servo Valves

Hydraulic solenoid for servo valves is used in electro-hydraulic proportional control system, together with the proportional control amplifier, LVDT linear position sensors measuring head and the rigid connection on solenoid armature, which guarantees direct inspection of the spool’s position, so as to realize the precise control of spool displacement.

Table 6 Hydraulic Solenoid Assembly for Servo Valves Catalogue

SERIES IMAGE SIZE RATED FORCE COIL PDF DOWNLOAD
GP61D4-AIW Proportional Solenoid for Servo Valves   Φ60mm 180N R2.55Ω  IN3.7A  
GP45D4-AIW Proportional Solenoid for Servo Valves   Φ45mm 80N R2.1Ω  IN2.8A  
DP45-4-GWEF004 Proportional Solenoid for Servo Valves   Φ45mm 80N R2.1Ω  IN2.8A  
GP45H4-GWXF004 Proportional Solenoid for Servo Valves   Φ46mm 110N R3.2Ω  IN2.6A  
GP63-S-*IW63 series Proportional Solenoid for Servo Valves   Φ63mm 150N-170N  
GP516-S-CIW20/

GP516-S-EIW20 Proportional Solenoid for Servo Valves

  Φ45mm 50N-90N  

Tips: According to special requirements, the dimension, working stroke and rated current, voltage of hydraulic solenoids can be adjusted.

Related Productshydraulic solenoids for on-off valves, explosion-proof solenoids for mining machinery, displacement sensors, solenoid coils, custom solenoids, etc.

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