EN ISO 28927-8:2009 PDF

Overview

EN ISO 28927-8:2009 (CEN adoption of ISO 28927-8:2009) defines a laboratory, type‑test method for measuring hand‑transmitted vibration from a class of hand‑held portable power tools - specifically saws, polishing and filing machines with reciprocating action, and small saws with oscillating or rotating action. The standard establishes how to measure vibration at the machine handles under specified test conditions so results can be used to compare different models of the same machine type.

Key scope points:

• Applies to reciprocating files for surface finishing, parting saws (sheets, plaster, wood), and small circular saws primarily for metal or composites.
• Excludes files normally used with one hand on the blade and large circular wood‑cutting saws.
• Intended as a type‑test procedure to quantify vibration magnitude at gripping areas.

Key topics and technical requirements

• Measurement locations and directions: Specifies measurement at handle gripping areas and requires vibration measurement in multiple axes (three‑axis measurement and at both hand positions, per the revision notes).
• Transducers and mounting: Defines transducer positions, orientation and fastening methods to ensure repeatable measurements.
• Instrumentation: Requirements for frequency weighting filters, integration (time) settings and calibration of equipment.
• Operating and test conditions: Procedures for electrical, pneumatic and hydraulic machines; includes test set‑ups with attached equipment, workpiece and task descriptions to ensure repeatable conditions.
• Data treatment and reporting: How to report vibration values, combine directional components, declare and verify vibration emission values.
• Uncertainty and documentation: Annex B addresses uncertainty determination; Annex A gives a model test report format.
• Regulatory alignment: Informative annexes (ZA, ZB) show relationship to EU Directives (e.g., 2006/42/EC), supporting conformity assessment where applicable.

Practical applications

• Product development: quantify and reduce vibration during design and prototyping.
• Compliance and conformity: support declarations used in CE/market access processes where vibration risk is relevant.
• Comparative testing: benchmark and compare vibration emissions across models for selection and marketing claims.
• Occupational safety: feed objective vibration data into ergonomic assessments and exposure control planning.
• Test laboratories: provide standardized methods for repeatable type‑tests.

Who should use this standard

• Tool manufacturers and R&D teams
• Accredited test laboratories and QA engineers
• Safety/ergonomics professionals and occupational hygienists
• Procurement specialists evaluating tool selection
• Regulatory compliance officers

Related standards

• Other parts of the ISO 28927 series (Parts 1–4 and others) covering different hand‑held tools
• EN/ISO standards referenced in the normative and informative annexes (see standard text for full bibliography)

Keywords: ISO 28927-8, EN ISO 28927-8:2009, vibration emission, hand‑held portable power tools, hand‑transmitted vibration, saws, reciprocating action, measurement method, test method, type‑test, tool vibration testing.