EN 4008-018:2014

Overview

EN 4008-018:2014 is a European standard developed by CEN that specifies the product requirements for the positioner used with the M22520/2-01 crimping tool. This positioner is essential for accurately crimping electrical contacts in aerospace applications according to EN 4008-002. The standard ensures compatibility, reliability, and performance of the crimping tool accessories essential for secure electrical and optical connections in the aerospace industry.

Key Topics

• Scope and Purpose
  EN 4008-018:2014 defines the characteristics and technical specifications of the positioner designed specifically for the M22520/2-01 crimping tool. Its primary function is to ensure precise longitudinal positioning of electrical contacts for optimal crimping quality.

• Design and Functional Features
  The positioner includes two bayonets locking the device to the crimping tool and a spring-loaded locator to maintain consistent contact placement. The locator’s spring is calibrated to depress 0.79 mm with a force of (9 ± 4.5) N, providing consistent crimping force.

• Materials and Construction
  The body of the positioner is made from blue anodized aluminum alloy, while the locator is constructed from stainless steel. This combination ensures durability, corrosion resistance, and lightweight properties suitable for aerospace environments.

• Dimensions and Markings
  Precise dimensional requirements and tolerances are specified, accompanied by clear markings on the positioner for traceability, including a stamp stating: “EN 4008-018 use with M22520/2-01,” conforming to MIL-C-22520/2 military standards.

• Normative References
  The standard references EN 2591-100 (test methods), EN 4008-001 (technical specifications for crimping tools), EN 4008-002 (electrical contact crimping), and MIL-C-22520/2 as normative documents essential for the correct application and compliance.

Applications

• Aerospace Electrical Systems
  The positioner ensures precise crimping of electrical contacts in aerospace wiring harnesses, critical for maintaining system integrity, electrical conductivity, and safety in aircraft and spacecraft.

• Maintenance and Assembly
  Used extensively by aerospace manufacturers and maintenance personnel, the positioner standard facilitates consistent tool setup, ensuring repeatable and high-quality crimp results, minimizing wiring failures during operation.

• Quality Assurance and Compliance
  Implementing this standard supports compliance with stringent aerospace industry quality requirements, contributing to robust connection elements that withstand extreme operational environments like vibration, temperature fluctuations, and electromagnetic interference.

• Interchangeability and Tooling Compatibility
  Standardized dimensions and locking mechanisms promote interchangeability between tools and positioners across suppliers and service providers, simplifying logistics and reducing downtime in aerospace manufacturing plants.

Related Standards

• EN 4008-001: Technical Specification for Crimping Tools
  Outlines the overall technical and performance requirements for crimping tools used in aerospace electrical and optical connections.

• EN 4008-002: Product Standard for Electrical Contact Crimping
  Defines the requirements for crimping electrical contacts that the positioner and tool must meet.

• EN 2591-100: General Test Methods for Electrical and Optical Connections
  Provides standardized testing protocols to verify mechanical and electrical performance of connection components.

• MIL-C-22520/2: Military Specification for Crimping Tools
  The American defense standard from which the M22520/2-01 tool and related accessories derive compatibility and performance characteristics.

Keywords: EN 4008-018:2014, aerospace crimping standard, M22520/2-01 positioner, electrical contact crimping, aerospace electrical connectors, crimping tool accessories, CEN aerospace standards, aerospace wiring harness standards, MIL-C-22520/2 compatibility, electrical and optical connection elements.