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BS EN ISO 7285:2021

BS EN ISO 7285:2021

$167.15

Pneumatic cylinders for mechanized multiple spot welding

Published By Publication Date Number of Pages
BSI 2021 44
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This International Standard specifies the requirements of the geometrical and mechanical characteristics of pneumatic cylinders used for multiple spot welding machines and their manufacturing, delivery and test specifications.

These cylinders for a nominal air pressure of 1 M Pa (10 bar) are double-acting, with two piston stages in series for the advance during the operational stroke and the force, and a single piston stage for the return.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative reference
3 Nominal characteristics
3.1 Nominal strokes
3.2 Nominal forces
4 Fixing the cylinder
5 Dimensions
5.1 Outside dimensions
10 5.2 Bore diameter
6 Operating specifications
6.1 Nominal force
6.2 Return force
6.3 Maximum supply pressure
7 Construction
7.1 Point of application of the reaction
7.2 Piston rod
7.3 Rotation
7.4 Seals
7.5 Perpendicularity — Parallelism between the mounting point and the attachment
11 7.6 Leakage
7.7 Behaviour under pressure
7.8 Electrode holder attachment
7.9 Endurance
7.10 Finish
8 Marking
8.1 Identification of the cylinders
12 8.2 Rating plate
9 Delivery conditions
10 Inspection and type tests
10.1 Visual inspection
10.2 Dimensional inspection
13 10.3 Inspection of the electrical insulation of the electrode holder attachment
10.4 Pressure type test
10.5 Leak type test
10.6 Separation force type test
10.7 Nominal force type test
10.8 Endurance type test
10.8.1 Test set-up
15 10.8.2 Air supply
10.8.3 Stroke of the cylinder and number of cycles
16 10.8.4 Welding current
10.8.5 Leakage
10.8.6 Measurement of play after the endurance test
17 Annex A (normative) Methods of mounting the cylinders
19 Annex B (normative) Electrode holder attachment
21 Annex C (normative) Mounting methods — Dimensions
42 Annex D (informative) Bibliography

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BS EN ISO 7285:2021
$167.15