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Use only low vibration power tools. This recommendation could be regarded as the most important one. Vibration data can often be found in the manufacturer’s technical information.

Shorten the usage time of the tool. As the A(8) value is a function of both vibration value and exposure time, one alternative is always to cut down on the working time.

Service and maintenance of the machine. Follow the manufacturer’s recommendations. It is especially important to maintain the cutting equipment and the rotating elements that can become unbalanced due to wear.

This calculator was developed as an aid to perform calculations of vibration exposure and was carried out under the following conditions:

Equivalent vibration value, ahv,eq. Measured according to ISO 5349-1 or according to relevant measuring standard based on ISO 5349-1 for the specific power tool.

Typical daily exposure time, Texp. The exposure time is always less than the daily working time. For most power tools, the estimation of Texp comes from an international study (CEN Technical Report - “Guideline for the assessment of exposure to hand-transmitted vibration based on information provided by manufacturers of machinery”). For machine types not included in this report, the Texphas been estimated from time studies. See table 1.

The assessment of A(8) is thereby only valid for these conditions. If a machine is used in a non-standard working application or if the exposure time is not relevant, the assessment of A(8) should be made taking these factors into consideration.

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The calculator has two options to include other hand-arm vibration power tools as well. The simplest option is when the tools’ rated A(8) exposure values are known.

Choose “other” from the model list. By selecting “other” the calculator automatically uses the typical vibration exposure time for that specified tool group. See table 1.

Edit the name in the model field (not necessary).

Enter the A(8) exposure value into the third column in the left section. Then use the calculator as described in section “Instructions for use”.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris congue vulputate erat hendrerit tincidunt.