{"id":660434,"date":"2024-11-06T02:49:12","date_gmt":"2024-11-06T02:49:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/jis-r-62432018\/"},"modified":"2024-11-06T02:49:12","modified_gmt":"2024-11-06T02:49:12","slug":"jis-r-62432018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/jis\/jis-r-62432018\/","title":{"rendered":"JIS R 6243:2018"},"content":{"rendered":"

This Standard specifies the method for measuring the unbalance and the practical inspection method for the acceptance of grinding and cutting-off wheels specified in Table 1 of JIS R 6241, having the outside diameter of 150 mm or more and mass of 0.2 kg or more used at the regular speed, and having the outside diameter of 100 mm or more and the mass of 0.1 kg or more used at the high speed, which are used at the maximum operating speed of over 10 m\/s Also this Standard specifies the maximum permissible unbalance of grinding and cutting off wheels.<\/p>\n

\nThis Standard is applicable to the grinding and cutting-off wheels in the as-delivered condition; however, not applicable to the following bonded abrasive products.<\/p>\n

\n\u2014 Diamond\/CBN tool or natural stone grinding wheels<\/p>\n

\n\u2014 Control wheels for centreless external cylindrical grinding, grinding wheels for lapping, grinding wheels for steel balls or grinding wheels for glass<\/p>\n

\nNOTE 1 The unbalance obtained in this test method refers to that existing in the grinding\/cutting-off wheel itself, independent of any imbalance which may exist in the balancing test arbor (hereafter referred to as the balancing arbor) or in the means of fastening it to this arbor.<\/p>\n

\nVarious elements, together with the flanges or hub-flanges, are assumed to be balanced, homogeneous and free from geometrical defects.<\/p>\n

\nNOTE 2 The effects of imbalance are basically as follows.<\/p>\n

\n\u2014 Additional stresses on the axis, machine and its mounting<\/p>\n

\n\u2014 Excessive wear of bearing<\/p>\n

\n\u2014 Vibration prejudicial to the quality of machining, and increase in internal stresses in grinding\/cutting-off wheel<\/p>\n

\n\u2014 Increase in operator fatigue<\/p>\n

\nNOTE 3 The maximum permissible unbalances specified in ISO 6103 are shown in Annex JA.<\/p>\n

\nNOTE 4 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.<\/p>\n

\nISO 6103 : 2014 Bonded abrasive products \u2014 Permissible unbalances of grinding wheels as delivered \u2014 Static testing (MOD)<\/p>\n

\nIn addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO\/IEC Guide 21-1.<\/p>\n","protected":false},"excerpt":{"rendered":"

Bonded abrasive products – Static testing and inspection methods for unbalances of grinding and cutting-off wheels<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
JIS<\/b><\/a><\/td>\n2018-09-20<\/td>\n23<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":660447,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[411,2655],"product_tag":[],"class_list":{"0":"post-660434","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-100-70","7":"product_cat-jis","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/660434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/660447"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=660434"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=660434"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=660434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}