Overview
EN ISO 28927-5:2009 (ISO 28927-5:2009) defines a laboratory, type‑test method for measuring hand‑transmitted vibration emission at the handles of hand‑held power drills and impact drills. Prepared by ISO/TC 118 and adopted by CEN, this standard establishes how to measure and report vibration magnitudes for straight drills, pistol‑grip drills and angle drills driven pneumatically or by other power sources (excluding heavy‑duty screw‑feed drills and combustion‑engine driven drills). The results are intended to compare different models of the same machine type and support conformity assessment and product information.
Key Topics
- Scope and applicability: covers drills and impact drills for rotating or impact action in various materials; excludes specified heavy‑duty types.
- Measurement approach: laboratory type‑test measuring hand‑transmitted vibration at the gripping areas; the 2009 edition extends measurement to three axes and both hand positions.
- Instrumentation requirements:
- Mounting and orientation of transducers on handles
- Frequency weighting filters and integration (time) settings
- Calibration and auxiliary equipment
- Test conditions and procedures:
- Defined operating conditions for repeatable measurements
- Specification of attached equipment, work piece and task
- Operator requirements and hand positions
- Measurement validity criteria, reporting and declaration procedures
- Evaluation and reporting:
- How to calculate and combine vibration directions
- Model test report format (Annex A)
- Determination of measurement uncertainty (Annex B)
- Regulatory linkage: informative annexes show relationship to EU Machinery Directives (98/37/EC, 2006/42/EC), helping demonstrate conformity where applicable.
Applications
EN ISO 28927-5:2009 is used by:
- Manufacturers to quantify and publish vibration emission values for product comparison and design improvements.
- Independent test laboratories for type‑testing and certification of drills and impact drills.
- Compliance and certification bodies assessing conformity with machinery safety directives and CE marking requirements.
- R&D and product engineering teams optimizing ergonomics and vibration control.
- Occupational health & safety professionals evaluating hand‑arm vibration exposure and aiding selection of lower‑vibration tools.
Practical benefits include reproducible vibration data for supplier selection, risk assessment for hand‑arm vibration syndrome (HAVS), and supporting product declarations used in procurement and regulatory compliance.
Related Standards
- EN ISO 28927 series (other parts cover grinders, wrenches, polishers, rammers, saws, percussion tools, etc.)
- Supersedes ISO 8662-6:1994 / EN ISO 8662-6
- Annexes in the standard provide a model test report and a method for uncertainty estimation.
Keywords: ISO 28927-5:2009, EN ISO 28927-5, vibration emission, hand‑transmitted vibration, hand‑held power tools, drills, impact drills, type‑test, laboratory method.