Overview
EN ISO 28927-8:2009/A1:2015 (CEN adoption of ISO 28927-8:2009/Amd 1:2015) specifies test methods for the evaluation of vibration emission from a family of hand‑held portable power tools: saws, polishing and filing machines with reciprocating action, and small saws with oscillating or rotating action. Amendment 1 specifically updates procedures for polishing machines by defining modified feed forces used during vibration testing. This European adoption supports harmonized measurement and reporting of tool vibration for compliance, design evaluation and user safety.
Key topics and technical requirements
- Scope and family of machines: Defines machines covered (saws, polishers, files, small oscillating/rotating saws) and test boundaries.
- Characterization of vibration: Measurement in three orthogonal axes; measurement locations including both hand positions; magnitude and combination of directional components.
- Instrumentation requirements: Specification for transducers, mounting and fastening, frequency weighting filters, integration times, calibration and auxiliary equipment.
- Testing and operating conditions: Standardized operating conditions for pneumatic, hydraulic and electrical machines; test set‑ups, attached equipment and workpiece specifications; operator conditions and procedures.
- Measurement procedure and validity: How to perform measurements, report vibration values, and verify or declare vibration emission values.
- Reporting and uncertainty: Model test report (informative Annex A) and determination of measurement uncertainty (normative Annex B).
- Regulatory context: Type‑C standard (per ISO 12100) adopted by CEN and intended to support compliance with applicable EU directives.
Applications
- Standardized laboratory testing of hand‑held power tools for declared vibration emission values.
- Product development and design validation to reduce user vibration exposure.
- Independent conformity assessment and type testing for CE marking and regulatory compliance.
- Occupational health risk assessment and tool selection in industries such as construction, manufacturing and surface treatment.
- Calibration and quality control in vibration test laboratories.
Who uses this standard
- Power tool manufacturers and design engineers
- Test laboratories and certification bodies
- Occupational safety and health professionals
- Regulatory authorities and conformity assessors
- R&D teams working on vibration mitigation and ergonomics
Related standards
- ISO 28927 series (other parts covering grinders, drills, polishers, etc.)
- ISO 12100 (type‑C standard context)
- Historical references: ISO 8662 series (replaced by ISO 28927 parts)
Keywords: vibration emission, hand-held power tools, polishing machines, saws, test methods, EN ISO 28927-8:2009/A1:2015, vibration measurement, instrumentation requirements, occupational safety.