Overview
ISO 28927-5:2009 - Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 5: Drills and impact drills - specifies a laboratory, type-test method to measure hand‑transmitted vibration at the handles of drills and impact drills. The standard defines how to establish the magnitude of vibration in the gripping areas of a drill fitted with a drill bit so that different models of the same machine type can be compared under reproducible conditions.
Key topics and requirements
- Scope: Applies to straight drills, pistol‑grip drills and angle drills driven pneumatically or by other means; excludes heavy‑duty screw‑feed drills and combustion‑engine driven drills.
- Type-test method: Laboratory procedure to produce comparable vibration emission values intended for model comparison rather than direct workplace exposure assessment.
- Three‑axis measurement: Vibration is measured in three orthogonal axes and at both hand positions; transducers are positioned close to the hand (area between thumb and index finger) to minimize operator disturbance.
- Instrumentation and procedure: Requirements cover transducer mounting, frequency‑weighting filters, integration time, calibration and auxiliary equipment. Detailed test conditions, operator role, attached equipment, workpiece and task are described to ensure reproducibility.
- Reporting and uncertainty: Specifies reported vibration values, declaration and verification rules, a model test report (informative annex) and procedures for determining measurement uncertainty (normative annex).
- Use with exposure standards: Results are type‑test values; for occupational exposure assessment, ISO 5349 procedures are required. The standard notes that emission values below 2.5 m/s² are not recommended for estimating real‑world vibration magnitudes.
Practical applications
- Product design and engineering: compare vibration performance across drill models and validate vibration‑reduction design features.
- Manufacturer type testing: produce standardized vibration data for technical specs, user manuals and declarations.
- Independent test laboratories: perform repeatable laboratory tests for certification or supplier comparison.
- Occupational safety and procurement: use type‑test data to screen tools and inform workplace risk assessments (follow-up field measurements per ISO 5349).
- Regulatory and compliance work: support conformity assessment and labeling related to vibration emission.
Who should use this standard
- Tool manufacturers and R&D teams
- Test and calibration laboratories
- Occupational hygienists and safety engineers
- Certification bodies and regulatory authorities
- Procurement specialists specifying low‑vibration tools
Related standards
Keywords: ISO 28927-5:2009, hand-held portable power tools, vibration emission, drills, impact drills, hand-transmitted vibration, test methods, type-test, measurement procedure.
Open preview (PDF)Hand-held portable power tools — Test methods for evaluation of vibration emission — Part 5: Drills and impact drills