{"id":265376,"date":"2024-10-19T17:42:08","date_gmt":"2024-10-19T17:42:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-21250-12020\/"},"modified":"2024-10-25T13:39:15","modified_gmt":"2024-10-25T13:39:15","slug":"bs-iso-21250-12020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-21250-12020\/","title":{"rendered":"BS ISO 21250-1:2020"},"content":{"rendered":"

This document specifies:<\/p>\n

    \n
  1. \n

    basic principles, testing assembly and the test machine for noise testing of rolling bearing greases;<\/p>\n<\/li>\n

  2. \n

    symbols used in the test methods BQ+, MQ and NQ.<\/p>\n<\/li>\n<\/ol>\n

    This document is applicable for testing rolling bearing greases, especially of unused grease.<\/p>\n

    \n
    \n NOTE\n <\/div>\n

    Suitable greases are greases of NLGI classes 1 to 3 according to DIN 51818<\/span><\/span> [<\/sup> 6<\/sup><\/span> ]<\/sup>. Suitable greases for lubrication of rolling bearings are especially greases according to ISO 12924<\/span><\/span> . The test method according to this document delivers meaningful results for rolling bearings; however, it can also be applied for greases in similar applications [<\/sup> 12<\/sup><\/span> ][<\/sup> 13<\/sup><\/span> ]<\/sup>.<\/p>\n<\/div>\n

    PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    2<\/td>\nundefined <\/td>\n<\/tr>\n
    6<\/td>\nForeword <\/td>\n<\/tr>\n
    7<\/td>\nIntroduction <\/td>\n<\/tr>\n
    9<\/td>\n1 Scope
    2 Normative references
    3 Terms and definitions <\/td>\n<\/tr>\n
    10<\/td>\n4 Symbols, abbreviated terms and subscripts <\/td>\n<\/tr>\n
    11<\/td>\n5 Basics <\/td>\n<\/tr>\n
    12<\/td>\n6 Grease noise evaluation method
    6.1 General and overview
    6.2 Calculation method for the grease damping <\/td>\n<\/tr>\n
    13<\/td>\n6.3 Calculation method for peak analysis <\/td>\n<\/tr>\n
    15<\/td>\n6.4 Calculation for SUN analysis
    7 Noise testing of greases
    7.1 General information <\/td>\n<\/tr>\n
    16<\/td>\n7.2 Measuring principle
    7.3 Test machine
    7.4 Test setup
    7.5 Test bearings and amount of grease <\/td>\n<\/tr>\n
    17<\/td>\n7.6 Test load
    7.7 Spindle speed
    7.8 Signal recording <\/td>\n<\/tr>\n
    18<\/td>\n7.9 Display
    8 Calibration
    8.1 General <\/td>\n<\/tr>\n
    19<\/td>\n8.2 Calibration levels
    8.3 Calibration means
    9 Error estimation <\/td>\n<\/tr>\n
    21<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Rolling bearings. Noise testing of rolling bearing greases – Basic principles, testing assembly and test machine<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2020<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":265378,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[316,2641],"product_tag":[],"class_list":{"0":"post-265376","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-21-100-20","7":"product_cat-bsi","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\/265376","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\/265378"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=265376"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=265376"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=265376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}