Can I contact factories directly on CNFX?

CNFX is an open directory. Each factory profile provides direct contact information.

Coil Former Component – Electrical Equipment Manufacturing

Component Specifications

Definition

A coil former, also known as a bobbin, is a precision-engineered component designed to provide mechanical support, electrical insulation, and thermal management for wound wire coils in electromagnetic assemblies. It maintains precise winding geometry, prevents short circuits, and facilitates heat dissipation in devices such as moving coil assemblies, solenoids, and inductors.

Working Principle

The coil former acts as a non-conductive core around which conductive wire is wound to create an electromagnetic coil. It ensures consistent coil geometry, which is critical for maintaining inductance, magnetic field uniformity, and operational reliability. In a moving coil assembly, it supports the coil within a magnetic field, allowing controlled movement when current flows.

Materials

Typically made from thermoplastics (e.g., PBT, PET, nylon), thermosets (e.g., phenolic resins), or ceramics. Materials are selected for high dielectric strength, thermal stability (operating temperatures from -40°C to 150°C+), and mechanical rigidity.

Technical Parameters

Height 10-100 mm
Inner Diameter 3-45 mm
Outer Diameter 5-50 mm
Temperature Rating -40°C to 180°C
Dielectric Strength >10 kV/mm
Flammability Rating UL94 V-0

Standards

ISO 9001, IEC 60085, UL 1446

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Coil Former.

Parent Products

This component is used in the following industrial products

Moving Coil Assembly

Core electromagnetic actuator component that generates controlled vibration forces in electromagnetic vibration testing systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Electrical insulation failure due to material degradation
Mechanical deformation under thermal stress
Inconsistent winding leading to performance variability

FMEA Triads

Trigger: Material thermal degradation
Failure: Loss of insulation, leading to short circuits
Mitigation: Use high-temperature-rated materials and implement thermal management designs

Trigger: Improper winding tension
Failure: Coil deformation or wire damage
Mitigation: Automate winding processes with tension control and quality checks

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions

Test Method

Dielectric withstand test per IEC 60243, dimensional inspection per ISO 2768

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

Induction Coil

Induction coil is a critical component in electromagnetic induction heaters that generates alternating magnetic fields to induce eddy currents in conductive materials for precise, contactless heating.

Protective Housing

Protective housing for industrial wireless power transfer modules, providing environmental protection, EMI shielding, and thermal management.

Alignment System

Precision alignment system for industrial wireless power transfer modules ensuring optimal energy coupling efficiency.

Winding Spindle

A precision rotating shaft in transformer winding machines that holds and rotates the coil form during wire winding operations.

Frequently Asked Questions

What is the primary function of a coil former?

The primary function is to provide structural support and electrical insulation for wire windings, ensuring consistent coil geometry and preventing electrical shorts.

Can coil formers be used in high-temperature environments?

Yes, if made from high-temperature materials like PBT or ceramics, they can operate in environments up to 180°C or higher, depending on the specification.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Coil Former