Overview
EN ISO 28927-6:2009 (ISO 28927-6:2009) specifies a laboratory, type‑test method for measuring hand‑transmitted vibration emission at the handles of hand‑held, power‑driven rammers. The standard defines how to establish the magnitude of vibration in the gripping areas of rammers run under specified test conditions so that results can be used to compare different models of the same machine type.
Key topics
- Scope and applicability: applies to rammers, back‑fill rammers, pawing rammers, sand rammers and stampers (pneumatic or otherwise) used in foundries, building sites and similar environments.
- Measurement objectives: laboratory measurement of hand‑transmitted vibration at the handles (type‑test procedure) to quantify and compare vibration emission.
- Measurement directions and positions: vibration measured in three axes and at both hand positions (updated from earlier versions).
- Instrumentation requirements: guidance on transducer selection and mounting of accelerometers, frequency weighting filters, integration time, calibration and auxiliary equipment.
- Test conditions: defined operating conditions, attached equipment/workpiece specification, and operator considerations to ensure repeatability and comparability.
- Data treatment: procedures for magnitude calculation, combination of directional components, validity criteria, uncertainty determination (Annex B) and model test reporting (Annex A).
- Design guidance: includes normative guidance on energy absorber design for rammers (Annex C).
Applications
- Product type testing and model comparison for manufacturers of rammers and stampers.
- Independent test laboratories performing standardized vibration measurements for certification, quality control and R&D.
- Occupational health & safety and procurement teams evaluating tool vibration to reduce hand‑arm vibration exposure and select lower‑vibration models.
- Design engineers using measured vibration data to inform vibration‑reduction measures (dampers, handle design, mass distribution).
Who uses this standard
- Tool manufacturers and designers
- Accredited testing laboratories
- Safety engineers and occupational hygienists
- Procurement and compliance teams in construction, foundry and industrial sectors
- Certification bodies assessing conformity with machinery directives
Related standards
- Part of the ISO 28927 series (test methods for vibration emission of hand‑held portable power tools).
- Supersedes EN ISO 8662‑9:1996; informative annexes relate the standard to EU Directives (Machinery Directive 98/37/EC and 2006/42/EC), providing a pathway for conformity assessment.
Keywords: EN ISO 28927-6:2009, ISO 28927-6:2009, rammers, hand‑transmitted vibration, vibration emission test methods, hand‑held portable power tools, type‑test, vibration measurement, occupational health.
