Solenoid Coils

Solenoid coils for tail gates and truck lift gates – Precise control of the hydraulic system

Whether in delivery operations, workshops, or fleet use – wherever a tail gate or truck lift gate must perform reliably, the solenoid coil in the hydraulic power unit ensures controlled motion and operational safety. It converts electrical impulses into precise movements and controls the heart of the hydraulics. Every lift and lower motion depends on it. If it fails, the entire system stops. At SULEJ Ladebordwand, we know from decades of experience how closely quality and safety are connected. That’s why we rely on solenoid coils that have been tested under real conditions – for smooth control, long service life, and consistent performance in daily operation.

How solenoid coils control movement in tail gates and truck lift gates

Every movement of a lift gate starts with an electrical signal – and this is where the solenoid coil comes into play. It forms the bridge between electronics and hydraulics. Once current flows, it generates a magnetic field that moves a small plunger inside the valve. This opens or closes the hydraulic oil path, allowing the platform to raise or lower with millimeter precision. This accurate response determines the safety, speed, and efficiency of the entire system. High-quality coils ensure that the hydraulics of every tail gate operate smoothly and consistently even under heavy load.

Material and construction – Precision under extreme conditions

Solenoid coils must function daily under harsh conditions. Constant vibration, temperature changes, humidity, and dirt challenge every component – especially in tail gates and truck lift gates. High-quality coils are made from heat-resistant copper, durable plastic, or corrosion-protected metal. Special insulation prevents short circuits, while sealed housings protect the windings from moisture and dust. Many models are temperature resistant up to 120 °C and rated up to IP65. This combination of materials guarantees consistent magnetic force, precise switching, and long service life – even under continuous operation in transport and logistics environments.

Designs and variants – Tailored solutions for every lift gate system

Solenoid coils are available in numerous configurations designed to match the electrical and hydraulic requirements of tail gates and lift gates. Variations include voltage (12 V or 24 V), size, power rating, and connector type. For proper operation, the coil’s inner diameter must precisely match the hydraulic valve – only then can the magnetic plunger function accurately and control the oil flow reliably. Equally important is the connector system that links the coil to the control unit. Depending on the manufacturer, AMP-JPT, Deutsch, flat or round connectors, Hirschmann, Kostal (M24x1, M27x1), or Molex Mini-Fit Jr. connectors are used. These ensure vibration-proof electrical contact and effective protection against moisture. The correct combination of valve bore, voltage, and connector type ensures reliable, efficient, and safe performance.

When precision becomes routine – Maintenance of solenoid coils

A solenoid coil usually works unnoticed – until it doesn’t. Regular checks prevent downtime. During maintenance of your lift gate, verify that all connectors are tight, clean, and dry. Even a small contact fault can cause delayed or failed response. Clean surroundings are essential – oil mist, road dust, or salt residues can weaken the insulation over time. Wiping down the components and inspecting for discoloration helps detect wear early – before operational issues arise.

Reliable function starts with the coil – Quality as the key factor

In hydraulic systems, the quality of each solenoid coil directly determines reliability and safety. Inferior coils often respond slowly or lose magnetic force at high temperatures – compromising the entire control system. A high-quality solenoid coil maintains consistent pressure, reacts instantly to control signals, and ensures precise platform movement. Especially in heavy-duty logistics, durable coils make all the difference – providing dependable operation even under vibration, temperature shifts, and constant load. Quality is not optional; it’s the foundation for efficiency and longevity.

Advantages at a glance – What premium solenoid coils deliver

• Precise control of all hydraulic movements
• Fast response times for safe and consistent operation
• High resistance to temperature, vibration, and moisture
• Long service life thanks to corrosion-proof and durable materials
• Energy-efficient operation with optimized magnetic field performance
• Compatible with numerous tail gate and truck lift gate systems

Anyone working daily with loading systems knows the reality: dust, frost, continuous operation, and time pressure. At SULEJ Ladebordwand, we understand how vital dependable hydraulic control is for seamless lift gate performance. Every tested solenoid coil stands for precision, safety, and quality – values proven daily under real working conditions.

Frequently asked questions about solenoid coils for tail gates and lift gates (FAQ)

When should a solenoid coil be replaced?

Whenever there are malfunctions such as delayed reaction, jerky motion, or complete control failure. Visible cracks, corrosion, or discolored windings are clear signs of damage and require replacement.

Can I replace a solenoid coil myself?

Replacement is possible but should only be done when the power supply is disconnected and the hydraulic system is depressurized. Always use an exactly matching coil. If in doubt, have a qualified workshop perform the replacement to ensure proper fit and sealing.

How do I identify the correct solenoid coil?

The correct coil can be identified by key technical parameters: voltage (12 V / 24 V), valve type, inner diameter, and connector design. These details are usually printed on the nameplate or the existing coil. Matching specifications guarantee compatibility with the hydraulic valve.

How can I extend the service life of a solenoid coil?

Regular cleaning, dry connectors, and stable power supply prevent premature wear. Coils should not remain energized when the hydraulic system is inactive.

Why choose quality replacement parts?

High-quality truck spare parts ensure proper fit, safety, and durability. They prevent control errors, protect the hydraulics, and guarantee reliable lift gate operation for many years.