Industry-Verified Manufacturing Data (2026)

Solenoid Coil

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Solenoid Coil used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Solenoid Coil is characterized by the integration of Wire Winding and Bobbin. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper wire construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An electromagnetic component that converts electrical energy into linear mechanical force to actuate control valves.

Product Specifications

Technical details and manufacturing context for Solenoid Coil

Definition
A solenoid coil is the electromagnetic actuator component within control valves that generates a magnetic field when energized by an electrical current. This magnetic field creates linear motion in a ferromagnetic plunger or armature, which directly opens or closes the valve orifice to control fluid flow. It serves as the primary electromechanical interface between control systems and valve operation.
Working Principle
When electrical current flows through the coiled wire, it generates a magnetic field according to Ampère's law. This magnetic field magnetizes a movable ferromagnetic core (plunger), creating an attractive force that pulls the plunger into the center of the coil. This linear motion is transferred to the valve mechanism to open or close the flow path. De-energizing the coil releases the plunger, typically via a return spring.
Common Materials
Copper wire, Electrical insulation materials, Ferromagnetic core material, Protective housing
Technical Parameters
  • Coil dimensions including outer diameter, length, and mounting dimensions (mm) Standard Spec
Components / BOM
  • Wire Winding
    Conducts electrical current to generate magnetic field
    Material: Copper or aluminum wire
  • Bobbin
    Provides structural support and electrical insulation for windings
    Material: Thermoplastic or thermoset polymer
  • Terminal Connections
    Electrical interface for power supply connections
    Material: Brass or copper alloy
  • Protective Housing
    Provides mechanical protection and environmental sealing
    Material: Plastic, aluminum, or stainless steel
Engineering Reasoning
12-24 VDC, 0.5-2.0 A, -40°C to +85°C ambient temperature, 0-100% relative humidity (non-condensing)
Coil temperature exceeding 130°C (Class B insulation limit), voltage exceeding 30 VDC (150% rated maximum), current exceeding 3.0 A (150% rated maximum), mechanical stroke exceeding ±0.5 mm from nominal position
Design Rationale: Insulation breakdown due to thermal degradation (Arrhenius equation: reaction rate doubles per 10°C increase above 130°C), magnetic saturation beyond 1.6 T (silicon steel saturation flux density), mechanical fatigue from Lorentz force exceeding 15 N/mm² yield strength
Risk Mitigation (FMEA)
Trigger Voltage transient exceeding 30 VDC for >10 ms
Mode: Insulation breakdown between winding layers, causing inter-turn short circuit
Strategy: Zener diode clamping circuit (30 V breakdown) with 1N5349B TVS diode, ferrite bead filtering on power input
Trigger Continuous duty cycle exceeding 100% at 24 VDC for >30 minutes
Mode: Coil temperature rise to 130°C, resulting in insulation class B thermal degradation
Strategy: PWM current control maintaining 1.8 A maximum, thermal sensor (PT100) with cutoff at 120°C, aluminum heat sink with 2.5 K/W thermal resistance

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Solenoid Coil.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 6000 psi (414 bar) depending on valve body rating
other spec: Voltage tolerance: ±10% of rated voltage, Duty cycle: Continuous or intermittent (typically ≤90% ON time)
temperature: -20°C to +80°C (standard), up to +120°C (high-temp variants)
Media Compatibility
✓ Hydraulic oil (mineral-based) ✓ Compressed air (dry, filtered) ✓ Water/glycol mixtures
Unsuitable: Corrosive chemicals (acids, strong bases) or abrasive slurries with >5% solids concentration
Sizing Data Required
  • Required force/stroke (N/mm)
  • Supply voltage/current (V DC/AC, mA)
  • Response time/cycle frequency (ms, Hz)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Coil burnout
Cause: Overvoltage, excessive current due to mechanical binding, or prolonged energization beyond duty cycle
Insulation degradation
Cause: Thermal cycling, moisture ingress, or chemical exposure leading to short circuits
Maintenance Indicators
  • Audible humming or buzzing during operation indicating loose laminations or armature sticking
  • Visible discoloration, charring, or swelling of the coil housing suggesting overheating
Engineering Tips
  • Implement voltage regulation and surge protection to maintain electrical parameters within manufacturer specifications
  • Establish preventive maintenance schedules for cleaning, lubrication of moving parts, and insulation resistance testing

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 (Quality Management Systems) IEC 60034-1 (Rotating Electrical Machines) EN 60335-1 (Household and Similar Electrical Appliances Safety)
Manufacturing Precision
  • Coil Resistance: +/-5% of nominal value
  • Insulation Thickness: +/-0.1mm
Quality Inspection
  • Insulation Resistance Test (Megger Test)
  • Coil Continuity and Resistance Verification

Factories Producing Solenoid Coil

Verified manufacturers with capability to produce this product in China

✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Jan 23, 2026
★★★★★
"The technical documentation for this Solenoid Coil is very thorough, especially regarding technical reliability."
Technical Specifications Verified
T Technical Director from Brazil Jan 20, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Solenoid Coil so far."
Technical Specifications Verified
P Project Engineer from Canada Jan 17, 2026
★★★★★
"Testing the Solenoid Coil now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

15 sourcing managers are analyzing this specification now. Last inquiry for Solenoid Coil from Turkey (1h ago).

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Frequently Asked Questions

What materials are used in your solenoid coils for machinery manufacturing?

Our solenoid coils are constructed with high-quality copper wire for efficient conductivity, electrical insulation materials for safety, ferromagnetic core material for optimal magnetic performance, and durable protective housing for industrial environments.

How does a solenoid coil convert electrical energy to mechanical force?

When electrical current flows through the copper wire winding, it creates a magnetic field around the ferromagnetic core. This magnetic field generates linear mechanical force that actuates control valves in machinery and equipment systems.

What are the key components in your solenoid coil BOM?

Our solenoid coil bill of materials includes wire winding for electromagnetic function, bobbin for structural support, terminal connections for electrical interface, and protective housing for durability in industrial machinery applications.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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