INDUSTRY COMPONENT

Core/Plunger

Core plunger is a precision component in drive coil actuators that converts electromagnetic energy into linear mechanical motion.

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Component Specifications

Definition
The core plunger is a cylindrical ferromagnetic component that moves axially within a drive coil assembly when energized by electrical current. It serves as the moving element in solenoid actuators, electromagnetic valves, and linear motion systems, translating electromagnetic force into precise mechanical displacement. Its design ensures minimal friction, consistent magnetic coupling, and reliable operation in industrial automation applications.
Working Principle
When electrical current flows through the drive coil, it generates a magnetic field that attracts or repels the ferromagnetic core plunger, causing linear motion. The plunger's movement is proportional to the current magnitude and coil design, enabling controlled actuation in mechanical systems.
Materials
Typically made from low-carbon steel (AISI 1010/1018), silicon steel, or soft magnetic alloys like Permendur for enhanced magnetic permeability and reduced hysteresis. Surface treatments include zinc plating, nickel coating, or passivation for corrosion resistance.
Technical Parameters
  • Diameter 5-50 mm
  • Coil Voltage 12-240 V DC/AC
  • Response Time <50 ms
  • Stroke Length 2-100 mm
  • Operating Force 10-500 N
  • Operating Temperature -20°C to 120°C
Standards
ISO 4401, DIN 24342, ISO 5599-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Core/Plunger.

core plunger drive coil actuator solenoid plunger linear actuator component electromagnetic actuator industrial plunger Core/Plunger Core/Plunger in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Drive Coil / Actuator

Electromechanical component that converts electrical energy into mechanical motion within a drive system

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Engineering Analysis

Risks & Mitigation
  • Magnetic saturation reducing force
  • Mechanical wear from cyclic motion
  • Corrosion in humid environments
  • Coil overheating affecting performance
FMEA Triads
Trigger: Inadequate lubrication
Failure: Increased friction leading to stuck plunger
Mitigation: Implement regular maintenance schedules and use compatible lubricants
Trigger: Material fatigue from high-cycle operation
Failure: Fracture or deformation of plunger
Mitigation: Use fatigue-resistant alloys and design within stress limits

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm diameter, ±0.1 mm length
Test Method
Magnetic flux testing, dimensional verification, cycle life testing per ISO 19973

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.

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Frequently Asked Questions

What is the primary function of a core plunger in industrial actuators?

The core plunger converts electromagnetic energy from the drive coil into precise linear mechanical motion, enabling actuation in valves, switches, and automation systems.

How do material choices affect core plunger performance?

Materials like silicon steel reduce eddy current losses, while coatings enhance durability. Magnetic permeability directly impacts force output and response efficiency.

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.

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