BS ISO 19973-3:2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Test equipment
6 Test conditions
7 Test procedures
8 Failure criteria and threshold levels
9 Data analysis
10 Test report
11 Identification statement (reference to this part
   of ISO 19973)
Annex A (informative) - Methods for calculating side
        load masses and related dimensions
Annex B (informative) - Test data sheet
Bibliography

Describes test procedures for assessing the reliability of pneumatic cylinders with piston rod, both single-acting and double-acting, by testing and the methods of reporting the results of testing.

This part of ISO19973 provides test procedures for assessing the reliability of pneumatic cylinders with piston rod, both single-acting and double-acting, by testing and the methods of reporting the results of testing. General test conditions and the calculation method are provided in ISO19973‑1 . The methods specified in ISO19973‑1 apply to the first failure, as obtained with the three-point moving average ( 3PMA) method, without repairs, but excluding outliers. The lifetime of pneumatic cylinders is usually given in number of cycles or in kilometres. Therefore, whenever the term “time” is used in this part of ISO19973 , this variable is to be understood as cycles or kilometres. This part of ISO19973 also specifies test equipment and threshold levels for tests to assess the reliability of pneumatic cylinders with piston rods. This part of ISO19973 is intended to be applied to pneumatic piston rod cylinders that conform to ISO6430 , ISO6432 , ISO15552 , and ISO21287 ; however, pneumatic piston rod cylinders that do not conform to these International Standards but are used in the same range of operating conditions can be tested in accordance with one of the classes defined in Tables1 and 2.