Leading Custom Solenoid Coil Manufacturer
As a premier custom solenoid coil manufacturer, JHCOILS engineers high-performance electromagnetic coils that provide the precise linear force for your most demanding applications. We specialize in tailoring every aspect of the solenoid coilโfrom voltage and power to materials and encapsulationโto ensure optimal performance and seamless integration.
What is a Custom Solenoid Coil?
Solenoid valve coil is a kind of coil installed inside the solenoid valve. The main function of this coil is to play an electric AC role.
A solenoid coil is a precisely wound electromagnetic coil that, when energized with an electric current, creates a concentrated and uniform magnetic field. This field is used to actuate a movable ferromagnetic plunger (or armature), converting electrical energy into precise, fast-acting linear mechanical force. This fundamental principle powers valves, locks, actuators, and relays across countless industries.
While standard solenoids exist, a custom solenoid coil is essential when off-the-shelf components fail to meet specific requirements for force, speed, power consumption, environmental resistance, or physical size. At JHCOILS, we address these challenges by engineering coils that are perfectly optimized for your system, ensuring reliability and efficiency.
Our Full-Spectrum Customization Services
We are more than just a manufacturer; we are your development partner. Our services cover the entire product lifecycle.
Rapid Prototyping
We quickly translate your designs into functional prototypes for testing and validation. Our agile process allows for rapid iteration, ensuring the final design is perfected before mass production.
Reverse Engineering
Have an obsolete or underperforming coil? We can analyze existing components to replicate or improve upon their design, providing a modern, reliable replacement that meets or exceeds original specs.
Custom Mold & Tooling
For unique form factors or integrated assemblies, we design and create custom molds for plastic overmolding and encapsulation, ensuring a perfect fit and robust environmental protection.
Customization Range: Electrical Parameters
The electrical characteristics are fundamental to a solenoid coil’s performance. We provide complete control over these critical parameters.
- Voltage: We design for any standard or custom voltage, including DC (12V, 24V, 36V, 48V) and AC (36V, 110V, 220V, 380V) systems, ensuring compatibility with your power source.
- Power Consumption: We optimize for low power consumption (e.g., DC 3W-4.8W) for energy-sensitive applications or design for higher power to achieve greater force.
- Duty Cycle: We engineer coils for continuous duty (100%) or intermittent duty cycles, preventing overheating and extending the coil's operational life.
- Resistance & Turns: We precisely calculate the wire gauge and number of turns to achieve the target resistance, force, and power rating
Customization Range: Mechanical & Environmental
A solenoid coil's reliability depends on its ability to withstand its operating environment. We build robust coils using a wide range of materials and protection methods.
- Ingress Protection (IP) Rating: We offer overmolding and encapsulation to achieve IP65 (dust-tight, water-jet resistant) and IP67 (dust-tight, immersion-proof) ratings for harsh conditions.
- Insulation Class: We utilize insulation systems rated to Class F (155ยฐC), Class H (180ยฐC), or even Class N (200ยฐC) for high-temperature applications.
- Frame & Bobbin Materials: Choose from thermoplastics like PBT, PA66 (Nylon), or high-performance PPS and PET based on your requirements for temperature, strength, and chemical resistance.
- Magnetic Frame Material: We use high-quality magnetic irons like DT4, DT4C, or low-carbon steel to ensure an efficient magnetic circuit.
Custom Solenoid Coil Manufacturing Process
As a leading custom solenoid coil manufacturer in China, JHCOILS delivers high-reliability solenoid coils for automotive, industrial automation, and electromechanical applications, from prototype to mass production.
Coil Winding โ Precision & Consistency
Coil winding is the core process of custom solenoid coil manufacturing. JHCOILS uses precision winding machines to control turns count, wire tension, and layer alignment. We support enamel copper wire and high-temperature wire for automotive solenoid coils, ensuring stable resistance, inductance, and magnetic force. Uniform winding improves durability, reduces heat generation, and meets long-life requirements in automotive and industrial environments.
Welding of Coil Leads & Skeleton Pins
After winding, coil leads are welded to skeleton pins or terminals using controlled soldering or welding processes. This ensures low contact resistance, strong mechanical strength, and vibration resistance, which are critical for automotive solenoid applications. Each joint is inspected to prevent cold solder and ensure long-term electrical reliability in harsh operating conditions such as heat, shock, and continuous duty cycles.
Detection & Quality Inspection
All custom solenoid coils undergo strict testing before delivery. Our detection process includes resistance, inductance, insulation resistance, withstand voltage, and pin-hole testing. These inspections ensure compliance with automotive-grade quality standards and stable performance under high temperature and long operating cycles. 100% testing minimizes failure risk and guarantees consistent batch quality.
Packaging & Delivery
After final inspection, solenoid coils are packed using protective, anti-static, and shock-resistant packaging based on customer requirements. We support labeling, lot traceability, and export-standard packaging for automotive and industrial customers. Secure packaging ensures coils arrive ready for assembly, maintaining quality during global transportation.
Manufacturing Excellence: The JHCOILS Advantage
Our 3000mยฒ vertically integrated factory is the foundation of our capabilities as a custom solenoid coil manufacturer. We combine advanced technology with proven processes.
- Advanced Automation: High-speed automated winding machines ensure unparalleled consistency in wire tension and layering, which is critical for reliable performance.
- Injection Overmolding: Our in-house overmolding capabilities allow us to encapsulate coils in durable thermoplastics, providing superior mechanical and environmental protection.
- Certified Quality Systems: We operate under strict ISO9001:2015 and IATF16949:2016 certifications, demonstrating our commitment to quality, process control, and automotive-grade reliability.
- Scalable Production: Our flexible manufacturing lines can handle everything from small-batch prototypes to high-volume production runs of thousands of units per week.
Related Products
Contact Our Support Team
FAQs
Duty cycle is the percentage of time a solenoid can be energized without overheating. A 100% duty cycle means it can be left on continuously. An intermittent duty cycle (e.g., 25%) means it can be on for 1 minute out of every 4. We design the coil specifically for your required duty cycle.
As temperature increases, the resistance of the copper wire also increases. This reduces the current for a given voltage, which in turn reduces the magnetic force. Our engineers account for your operating temperature range when designing the coil to ensure it performs reliably.
To provide an accurate quote, please provide the required voltage (AC/DC), power or current limit, duty cycle, required force at a specific stroke, any dimensional constraints, the operating environment (temperature, exposure to moisture), and the desired electrical connector.
Yes. As a flexible custom solenoid coil manufacturer, we are equipped to handle orders of all sizes, from a few dozen prototypes to large-scale mass production runs of thousands of units.
