INDUSTRY COMPONENT

Yoke

A yoke is the stationary magnetic core component in electromagnetic relays that completes the magnetic circuit and provides structural support.

View Specifications

Component Specifications

Definition
The yoke is a ferromagnetic component in electromagnetic relays that serves as the stationary part of the magnetic circuit. It connects the electromagnet core to the armature, providing a low-reluctance path for magnetic flux. This component ensures efficient magnetic field transfer, structural stability, and proper alignment of moving parts within the relay assembly.
Working Principle
When the relay coil is energized, it creates a magnetic field that flows through the yoke, completing the magnetic circuit between the electromagnet and armature. The yoke's ferromagnetic material concentrates and directs this magnetic flux, creating sufficient magnetic force to attract the armature and close or open electrical contacts.
Materials
Low-carbon electrical steel (typically 1008, 1010 grades), silicon steel (M-19, M-22), or soft magnetic composites. Material thickness: 0.5-2.0mm. Surface treatment: zinc plating, nickel plating, or phosphate coating for corrosion resistance.
Technical Parameters
  • Flatness ≤0.05mm
  • Coercivity ≤80 A/m
  • Surface Roughness Ra 1.6-3.2 μm
  • Dimensions Tolerance ±0.1mm
  • Magnetic Permeability ≥2000 μr
  • Electrical Resistivity 20-50 μΩ·cm
  • Saturation Flux Density 1.5-2.0 T
Standards
ISO 9001, IEC 61810-1, DIN EN 61810-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Yoke.

electromagnetic relay yoke magnetic core component relay yoke specifications ferromagnetic yoke relay magnetic circuit yoke material grades relay component standards Yoke Yoke in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Electromagnetic Relay

An electromechanical switching device that uses an electromagnet to mechanically operate contacts, enabling control of high-power circuits with low-power signals.

View Product Details

Cross/Yoke Assembly

The central rotating component of a universal joint that transmits torque between shafts at varying angles.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Magnetic saturation leading to reduced efficiency
  • Corrosion affecting magnetic properties
  • Mechanical deformation causing misalignment
  • Residual magnetism affecting release time
FMEA Triads
Trigger: Material impurities or improper heat treatment
Failure: Reduced magnetic permeability and increased hysteresis loss
Mitigation: Implement material certification and controlled annealing processes
Trigger: Poor surface finish or coating defects
Failure: Corrosion leading to increased magnetic reluctance
Mitigation: Apply proper protective coatings and implement quality inspection
Trigger: Dimensional inaccuracies in manufacturing
Failure: Air gaps causing flux leakage and reduced magnetic force
Mitigation: Maintain tight tolerances and implement precision machining

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1mm for critical dimensions, ±0.05mm for mating surfaces
Test Method
Magnetic flux density measurement using gaussmeter, dimensional verification with CMM, coating thickness measurement per ISO 2178

Buyer Feedback

★★★★☆ 4.5 / 5.0 (39 reviews)

"The technical documentation for this Yoke is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Electrical Equipment Manufacturing environments. No issues with the Yoke so far."

"Testing the Yoke now; the technical reliability results are within 1% of the laboratory datasheet."

Related Components

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.
Arc Plates
Arc plates are metallic plates within circuit breaker arc chutes that split and cool electrical arcs during interruption to ensure safe circuit disconnection.

Frequently Asked Questions

What is the primary function of a yoke in an electromagnetic relay?

The yoke completes the magnetic circuit between the electromagnet and armature, providing a low-reluctance path for magnetic flux to ensure efficient operation and structural stability.

Why is electrical steel commonly used for yoke manufacturing?

Electrical steel offers high magnetic permeability, low hysteresis loss, and good mechanical strength, making it ideal for efficient magnetic flux conduction while maintaining structural integrity.

How does yoke design affect relay performance?

Proper yoke design minimizes magnetic reluctance, reduces flux leakage, ensures precise armature alignment, and affects response time, holding force, and overall relay efficiency.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Yoke

Y-Capacitor