Belt drives. Grooved pulleys for narrow V-belts. Groove sections 9N/J, 15N/J and 25N/J (effective system) Ingestion-build-225643 Who is ISO 4869‑2- Estimating

Who is ISO 4869‑2- Estimating the A-weighted sound pressure levels effective when hearing protectors are worn for

BS 5306-4:1986

ISO 7779 specifies procedures for measuring and reporting the noise emission of information technology and telecommunications (ITT) equipment

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Belt drives. Grooved pulleys for narrow V-belts. Groove sections 9N/J, 15N/J and 25N/J (effective system) Ingestion-build-225643 Who is ISO 4869‑2- Estimating1 Scope This International Standard specifies the principal characteristics of grooved pulleys (for groove sections 9N J, 15N J and 25N J) intended to take both single and joined narrow V belts for industrial power transmission drives. Some background information on the series of effective diameters is given in annex A. NOTE The effective width of a groove is regarded as the basic dimension of standardization in the effective system for grooves and