Overview
ISO 18652:2005 - "Building construction machinery and equipment - External vibrators for concrete" defines terms and specifies the classification, performance requirements, test methods, designation and commercial specifications for power‑driven external vibrators used to compact concrete by vibration from the outside. It applies only to external vibrators attached to forms, vibration stands, tables, beams or surface vibrators - not internal immersion pokers.
Key topics and technical requirements
- Scope and terminology: Clear definitions for electric, pneumatic and hydraulic external vibrators, directed vibration types (single/double), fixed and removable fittings.
- Classification: By frequency (NF = below 70 Hz, HF = 70 Hz and above), power source (electric, pneumatic, hydraulic) and structure (fixed or removable).
- Performance requirements:
- Frequency must match manufacturer’s declared data under load.
- Centrifugal force must be sustained continuously under maximum intended load.
- Rating time is generally continuous (intermittent duty allowed for electric units if agreed and designated per IEC/other referenced standards).
- Current and power consumption under load should meet declared values.
- Safety & electrical requirements (electric vibrators):
- Design and components per IEC/ISO machine safety practice.
- Recommended cable protection IP55 (exposure to water and dust).
- Overload protection required for units > 0.5 kW.
- Insulation resistance and withstand voltage tests specified.
- Pneumatic/hydraulic requirements:
- Operational and pressure tests at maximum working pressure.
- Hoses and couplings must comply with relevant ISO standards to avoid fluid ejection hazards.
- Test methods:
- No‑load test: 2 min operation on vibration insulator (see Annex B).
- Load (payload) test: 30 min running with specified mass and insulation base.
- Documentation: Instruction handbook must include description, technical data, diagrams, compliance documentation, safety, maintenance, transport, spare parts and service life guidance.
- Annexes: Annex A - structural/ dimensional examples; Annex B - no‑load and load test details for insulators.
Applications and who uses the standard
ISO 18652 is for:
- Manufacturers designing and certifying external vibrators for construction.
- Buyers and specifiers (procurement, contractors) who need consistent designation and commercial specifications.
- Test laboratories and conformity assessors performing the no‑load and load tests and electrical/pressure tests.
- Site engineers, safety managers and maintenance teams implementing safe operation, selection of appropriate vibrator type (NF/HF, electric/pneumatic/hydraulic), and upkeep per the instruction handbook.
Practical benefits include improved equipment interoperability, predictable vibration performance, and clear safety/testing expectations for concrete compaction tools.
Related standards
Normative references cited by ISO 18652 include ISO 11375, ISO 12100-2, ISO 2398, ISO 4414, IEC 60034-1, IEC 60204-1, IEC 60745-1 and others covering hoses, couplings and machine safety - important for full compliance when supplying or specifying external vibrators.
