Electromagnetic Coils – Valve Solenoids

Get your machines back up and running. We offer high-quality solenoids for hydraulic and pneumatic solenoid valves. Available in popular control voltages: 12V DC, 24V DC, 110V AC, and 230V AC . Designed for continuous operation (ED 100%) and harsh weather conditions. Check out our range of spare parts!
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  • cewka

    Electromagnetic coil for NG10 valves

    Electromagnetic coil for NG10 valves
    107,31 zł
  • cewka

    Electromagnetic coil for NG6 valves

    Electromagnetic coil for NG6 valves
    53,65 zł

Solenoid Valve Coils – The Heart of Electrical Control

An electromagnetic coil (commonly known as a solenoid or electromagnet) is an actuator that, when subjected to current, generates a magnetic field, moving a valve spool or stem. It's the most frequently used electrical component in power hydraulics, so our offer includes a wide selection of replacements that fit most standard valves on the market (including CETOP/NG types).

How to choose the right coil?

To avoid mistakes when purchasing a new replacement coil, you should pay attention to three key parameters:

  1. Power supply voltage: The most important parameter. In mobile machines (agriculture, construction), 12V DC or 24V DC is the standard. In stationary industry, alternating current of 110V AC or 230V AC prevails (often requiring a plug with a rectifier).
  2. Internal diameter (hole): Must fit perfectly onto the valve stem. Popular diameters include 13 mm, 16 mm, 22 mm (for NG6 hydraulics), and 31 mm (for NG10).
  3. Coil Height: If the coil is too low, it will not securely hold the nut in place, and if it is too high, the spindle will not be able to be tightened.

Quality and Durability

The coils we offer are designed to operate in rigorous industrial conditions:

  • 100% ED operating class: This means that the coil can be powered continuously for any length of time without the risk of overheating (while maintaining the appropriate ambient temperature).
  • Tightness: Once the plug is installed, the systems achieve an IP65 protection rating, which protects the winding against moisture, oil and dust.
  • Standard connections: Most models are equipped with a DIN 43650 connector (type A or B), which facilitates quick installation of the electrical plug.

Application

Our electromagnets are universal spare parts used in:

  • Hydraulic spool valves (NG6, NG10).
  • Cartridge valves screwed into the blocks.
  • Pneumatic and water solenoid valves.
  • Engine extinguishing coils in construction machines.

Not sure if a particular coil fits your valve? Measure the stem diameter and height of your old coil with a caliper, and we'll help you choose the right one.

FAQ: Electromagnetic coils for hydraulic solenoid valves
1. How to choose the right coil for a hydraulic solenoid valve?

To select the correct coil, you need to check 3 key parameters:

  • Inner Hole Diameter and Length: The coil must physically fit onto the stem (bushing) of your solenoid valve.
  • Supply Voltage: Make sure you know what current your system requires (e.g. 12V DC, 24V DC, 110V AC or 230V AC).
  • Type of electrical connection: This is usually a standard DIN 43650 (ISO 4400) plug or AMP Junior type hermetic plugs, popular in mobile machines.
    At BRhydraulic we have coils compatible with the most popular valves on the market (NG6, NG10, NG16, NG25, NG32).
2. Which coil voltage should I choose: 12V, 24V or 230V?

The choice of voltage depends strictly on the type of machine and the operating environment:

  • 12V DC and 24V DC (direct current): This is the standard in mobile hydraulics. Used in agricultural machinery (tractors, trailers), construction machinery (excavators, loaders), and trucks and trailers.
  • 110V AC and 230V AC (alternating current): Used in stationary and industrial hydraulics, including hydraulic presses, CNC machines, injection molding machines and production lines powered directly from the mains.
3. How to check if the electromagnetic coil is burned out?

The surest way to diagnose a damaged coil is to measure its resistance (resistance) with a multimeter.

  • If the meter shows infinity (open circuit) , it means that the wire inside the coil has burned out.
  • If the meter shows a resistance close to zero (short circuit) , the insulation of the turns has melted.
    Other symptoms of failure include: visible melting of the plastic housing, a burning smell, or no response (e.g. no attraction to a metal screwdriver placed on the coil after applying voltage).
4. Why does the hydraulic coil get hot during operation?

Heating of an electromagnetic coil under voltage is a completely natural phenomenon, resulting from current flow and the resistance of the copper wire. Standard hydraulic valve coils are designed for continuous operation (ED 100%) and can safely reach high temperatures (often above 70-80°C).

BRhydraulic Expert Tip: Never connect power (especially AC) to a coil that has been removed from the valve stem! A loose coil without a steel core has no way to dissipate heat and doesn't complete the magnetic circuit, which will cause it to burn out in seconds.
5. Do the coils in the offer fit standard CETOP slide distributors?

Yes. Our solenoids are designed for subplate-mount hydraulic distributors (CETOP standard). We offer replacements and parts for CETOP 3 (NG6) and CETOP 5 (NG10) solenoid valves, which are the most common control elements in both agriculture and industry. If you're unsure about dimensions, check the detailed specifications in the product data sheet on our website.

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