Editorial Technical Reference

Actuator Head

This page explains how Actuator Head is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The mechanical interface component of a door interlock switch that physically engages with the door or frame to detect position.

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Product Specifications

Technical details and manufacturing context for Actuator Head

Definition
The actuator head is the critical mechanical component of a door interlock switch responsible for making physical contact with the moving door or its frame. Its position and movement directly trigger the switch's internal electrical contacts, enabling the safety system to detect whether a door is fully closed and latched, thereby preventing machine operation when access doors are open. This component is typically mounted on the moving part of the interlock, such as the door, and engages with a fixed striker or receiver on the frame. The actuator head is available in materials such as stainless steel and engineering plastics (e.g., POM, PA), and its housing is made of PA66+30%GF, which is flame retardant V-0 rated. The contact material is silver alloy AgNi10 for low resistance. Key parameters include a rated operating voltage of 24 V DC ±10%, rated insulation voltage of 250 V, mechanical endurance of 1,000,000 cycles, electrical endurance of 100,000 cycles, contact resistance ≤50 mΩ, degree of protection IP65, operating temperature range -25 to 70 °C, relative humidity ≤95% (non-condensing at 40 °C), actuator travel 5–10 mm, actuator force 10–20 N, and weight 50–80 g. These values are reference ranges and must be verified for the specific model and application. The actuator head complies with standards such as IEC 60947-5-1, IEC 60529, IEC 60068-2-78, and UL 94, but these are procurement references and do not guarantee certification. Always confirm model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The actuator head is mounted on the moving part of the interlock (e.g., the door). When the door closes, the head engages with a fixed striker or receiver on the frame, causing a mechanical displacement (push, turn, or cam action). This displacement is transferred internally to actuate the switch's electrical contacts, changing the circuit state (e.g., from open to closed) to signal 'door secure'. The actuator travel and force are critical for proper engagement; if the travel is insufficient or the force is too high, the switch may not actuate correctly. The head's design ensures that the displacement is reliably transmitted to the contacts, providing a positive indication of door position.
Common Materials
Stainless Steel, Engineering Plastic (e.g., POM, PA)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Operating Voltage24 ±10% V DCExceeding range may damage coilIEC 60947-5-1
Rated Insulation Voltage250 VMinimum for insulation coordinationIEC 60947-5-1
Mechanical Endurance1000000 cyclesUnder normal load conditionsIEC 60947-5-1
Electrical Endurance100000 cyclesAt rated voltage and currentIEC 60947-5-1
Contact Resistance≤50 mΩInitial value, after life may increaseIEC 60947-5-1
Degree of ProtectionIP65Dust-tight and protected against water jetsIEC 60529
Operating Temperature Range-25–70 °CBelow -25°C may cause brittle failureIEC 60947-5-1
Relative Humidity≤95 %Non-condensing, at 40°CIEC 60068-2-78
Actuator Travel5–10 mmEnsure proper engagement with door
Actuator Force10–20 NForce required to actuate the switch
Housing MaterialPA66+30%GFFlame retardant V-0 ratedUL 94
Contact MaterialAgNi10Silver alloy for low resistanceIEC 60947-5-1
Weight50–80 gDepends on cable length

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Actuator Button/Pad Part
    The contact surface that interfaces directly with the door striker or frame.
    Material: Stainless Steel or Plastic
  • Actuator Stem/Shaft Part
    Connects the button to the internal switch mechanism, transferring the mechanical force.
    Material: Stainless Steel
  • Return Spring Part
    Returns the actuator head to its default (unactuated) position when the door opens.
    Material: Stainless Steel

Applied To / Applications

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

Door Interlock Switch
View system integration details
Interlock Switch
View system integration details
Limit switches
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (mechanical interface)
other spec: Mechanical engagement force: 5-50 N, IP rating: IP67
temperature: -40°C to +85°C
Media Compatibility
✓ Industrial steel doors ✓ Aluminum frames ✓ Stainless steel surfaces
Unsuitable: High-vibration environments (>15g RMS)
Sizing Data Required
  • Door thickness (mm)
  • Required engagement travel (mm)
  • Mounting surface material hardness (Rockwell scale)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal degradation
Cause: Exposure to incompatible fluids, excessive temperatures, or particulate contamination leading to loss of sealing integrity and internal leakage
Bearing wear/failure
Cause: Inadequate lubrication, misalignment, excessive side loading, or contamination causing increased friction, vibration, and eventual seizure
Maintenance Indicators
  • Audible grinding, clicking, or knocking noises during operation indicating internal component wear
  • Visible fluid leakage around seals or actuator body suggesting seal failure or housing damage
Engineering Tips
  • Implement regular lubrication schedule with manufacturer-recommended lubricants and monitor lubricant condition for contamination
  • Install proper filtration systems for hydraulic/pneumatic fluids and maintain alignment with connected components to reduce side loading

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/B93.5M - Hydraulic fluid power - Cylinders DIN EN 1570-1 - Safety requirements for lifting tables

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.01mm
  • Surface flatness: 0.05mm
Quality Inspection
  • Dye penetrant test for surface defects
  • Hardness testing (Rockwell C scale)

Manufacturers of Actuator Head

Manufacturer profiles associated with Actuator Head.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What materials are used for the actuator head?

The actuator head is available in stainless steel and engineering plastics such as POM or PA. The housing is made of PA66+30%GF, which is flame retardant V-0 rated. Contact material is silver alloy AgNi10.

What is the rated operating voltage?

The rated operating voltage is 24 V DC ±10%. Exceeding this range may damage the coil. Always verify the exact rating for your model.

What is the mechanical endurance?

The mechanical endurance is 1,000,000 cycles under normal load conditions. This is a reference value and should be confirmed for the specific model.

What degree of protection does it have?

The degree of protection is IP65, meaning it is dust-tight and protected against water jets. This is per IEC 60529.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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