ISO INTERNATIONAL STANDARD 8380 Second edition 1993-11-15 Forestry machinery Portable brush-cutters and grass-trimmers Cutting attachment guard strength Matériel forestier --- Debroussailleuses et coupe-herbe portatifs Résistance mécanique du protecteur du dispositif de coupe ISO Reference number ISO 8380:1993(E) Copyright Intermational Organization for Standardization rovided by IHS I without license from IHS Not for Resale ISO 8380:1993(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through IsO which a technicai committee has been established has the right to be and non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the Internationail Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard iSO 8380 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry. Sub- Committee Sc 17, Manually portable forest machinery. This second editioncancelsandreplaces the first edition (ISO 8380:1985), which has been extended to include guards for types of blade other than circular and cutting attachment guards for brush- cutters and grass-trimmers. Annex A of this international Standard is for information only. ISO1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland = CopyrghtInternatinal Organizationfor Standardization without license from IHS Not for Resale INTERNATIONAL STANDARD ISO 8380:1993(E) Forestry machinery Portable brush-cutters and grass-trimmers -- Cutting attachment guard strength 1 Scope 3 Test requirements This International Standard specifies a test method When tested in accordance with clause 4, the cutting and the corresponding strength requirements for cut- attachment guard shall not break or crack. The di- ting attachment guards of portable hand-held com- mensions shall comply with the specification in bustion engine brush-cutters, for use primarily in ISO 7918 before and after the test. forestry, and grass-trimmers, to test their safety in practical use. This ensures safety for the operator 4 Test procedure being protected from thrown objects and uninten- tional contacts with the cutting attachment. 4.1 The cutting attachment shall be removed prior to the test. The test shall be carried out at a guard Another aspect of safety when designing a cutting attachment guard is its dimensions: required dimen- temperature of + 40 C ± 2 °C, and for brush-cutter sions are given in ISO 7918. guards only, at - 25 °C ± 3 °C. It is not necessary to heat up or cool down the whole brush-cutter. The NOTE 1 The present edition is ISO 7918:1985 and covers brush-cutter shall be mounted on a swivel bracket as only circular saw-blade guards to brush-saws, but it is an- close to the powerhead as possible, with the cutting ticipated that thenew edition will cover cuttingattachment attachment guard downwards (see figure 1). guard dimensionsfor portable brush-cutters,brush-saws and grass-trimmers. 4.2 The impact on the cutting attachment guard is generated by a total of 50 blows at each temperature This International Standard does not apply to cutting (see4.1)fromasteelhammer,suspendedonapen- attachment guards for lawn-trimmers, which are dealt dulum length of 700 mm ± 5 mm. The pendulum arm with in ISO 10518[1]. shall be as light as po