A Preface
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ISO 7590-2018 “Wire rope conveyance belts – Determination methods for total thickness and cladding thickness”

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This document was prepared by Technical Committee ISO/TC 41, Pulleys and Belts (including V-belts), Subcommittee SC 3, Conveyor Belts.

The sixth edition cancels and replaces the technically revised fifth edition (ISO 7590:2009). Compared with the previous edition, the main changes are as follows:

— Figure 4 has been corrected.

ISO 7590-2018 “Wire rope conveyance belts – Determination methods for total thickness and cladding thickness”

1 Scope
This document specifies three methods for measuring the total thickness and cover thickness of steel cord conveyor belts.

Methods A1 and A2 (micrometer method) can be used for all steel cord conveyor belts to measure total belt thickness and overlay thickness.

Method B (optical method) is only used to measure cover thickness. If there is textile or metal weft, it is also not suitable for the end of the wire rope to twist when cutting.

2 Normative references
There is no normative reference in this document.

ISO 7590-2018 “Wire rope conveyance belts – Determination methods for total thickness and cladding thickness”

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for standardization at the following addresses:

– ISO online browsing platform: available at iso.org/obp

– IEC Electronic Encyclopedia: available at electropedia.org/

3.1 Circuit breaker
The lateral reinforcement material in the conveyor belt, usually made of textile material, is inserted above and below or above or below the wire rope at a distance of at least 1 mm and is considered as part of the lid

Note 1: It is used to protect longitudinal ropes from material damage caused by impact or jam.

3.2 Fabric
The transverse parts of the protective reinforcement of the steel cord or textile cord, usually inserted above and below the steel cord, or above or below, at a distance of less than 1 mm, are considered to be part of the conveyor belt body

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