{"id":110298,"date":"2026-02-25T14:22:09","date_gmt":"2026-02-25T13:22:09","guid":{"rendered":"https:\/\/borweld.com\/pola-tolerancji-otworow-h7-h11-iso-286-2\/"},"modified":"2026-09-07T13:33:19","modified_gmt":"2026-09-07T11:33:19","slug":"pola-tolerancji-otworow-h7-h11-iso-286-2","status":"publish","type":"page","link":"https:\/\/borweld.com\/en\/pola-tolerancji-otworow-h7-h11-iso-286-2\/","title":{"rendered":"Pola tolerancji otwor\u00f3w H7\u2013H11 (ISO 286-2)"},"content":{"rendered":"\n
    \n
  1. Technical knowledge center<\/a><\/li>\n\n\n\n
  2. Principles of selecting bearing fits<\/a><\/li>\n\n\n\n
  3. Hole tolerance fields H7-H11<\/a><\/li>\n\n\n\n
  4. Typical fits of bearing nodes<\/a><\/li>\n\n\n\n
  5. Reconditioning tolerances of holes for pins and bushings<\/a><\/li>\n\n\n\n
  6. DIN 471 \/ DIN 472 circlips <\/a><\/li>\n\n\n\n
  7. Slide bushings – types and selection<\/a><\/li>\n\n\n\n
  8. Installation and removal of bearings – technical principles<\/a><\/li>\n<\/ol>\n\n

    Introduction<\/h2>\n\n

    Tolerance zones H7\u2013H11 define the permissible dimensional deviations of holes in the basic hole system in accordance with ISO 286-2.<\/p>\n\n

    This system is widely used in machine construction, hole regeneration and in the selection of bearing, bushing and pin fits.<\/p>\n\n

    W polu tolerancji H dolna odchy\u0142ka wynosi 0, co oznacza, \u017ce rzeczywisty wymiar otworu nie mo\u017ce by\u0107 mniejszy od nominalnego.<\/p>\n\n

    \n\n

    Base Hole System \u2013 Field H<\/h2>\n\n

    In the basic hole system:<\/p>\n\n

    Lower deviation (EI) = 0The upper deviation (ES) depends on the tolerance class (H7\u2013H11)<\/p>\n\n

    Example:<\/p>\n\n

    \u00d850 H7 hole\u2192 actual range: 50.000 mm \u2013 50.025 mm<\/p>\n\n

    \n\n

    Hole tolerance table H7\u2013H11 (mm)<\/p>\n\n

    Nominal diameter range [mm]<\/th>H7<\/th>H8<\/th>H9<\/th>H10<\/th>H11<\/th><\/tr><\/thead>
    3 \u2013 6<\/td>0 \/ +0.012<\/td>0 \/ +0.018<\/td>0 \/ +0.030<\/td>0 \/ +0.048<\/td>0 \/ +0.075<\/td><\/tr>
    6 \u2013 10<\/td>0 \/ +0.015<\/td>0 \/ +0.022<\/td>0 \/ +0.036<\/td>0 \/ +0.058<\/td>0 \/ +0.090<\/td><\/tr>
    10 \u2013 18<\/td>0 \/ +0.018<\/td>0 \/ +0.027<\/td>0 \/ +0.043<\/td>0 \/ +0.070<\/td>0 \/ +0.110<\/td><\/tr>
    18 \u2013 30<\/td>0 \/ +0.021<\/td>0 \/ +0.033<\/td>0 \/ +0.052<\/td>0 \/ +0.084<\/td>0 \/ +0.130<\/td><\/tr>
    30 – 50<\/td>0 \/ +0.025<\/td>0 \/ +0.039<\/td>0 \/ +0.062<\/td>0 \/ +0.100<\/td>0 \/ +0.160<\/td><\/tr>
    50 – 80<\/td>0 \/ +0.030<\/td>0 \/ +0.046<\/td>0 \/ +0.074<\/td>0 \/ +0.120<\/td>0 \/ +0.190<\/td><\/tr>
    80 – 120<\/td>0 \/ +0.035<\/td>0 \/ +0.054<\/td>0 \/ +0.087<\/td>0 \/ +0.140<\/td>0 \/ +0.220<\/td><\/tr>
    120 – 180<\/td>0 \/ +0.040<\/td>0 \/ +0.063<\/td>0 \/ +0.100<\/td>0 \/ +0.160<\/td>0 \/ +0.250<\/td><\/tr>
    180 – 250<\/td>0 \/ +0.046<\/td>0 \/ +0.072<\/td>0 \/ +0.115<\/td>0 \/ +0.185<\/td>0 \/ +0.290<\/td><\/tr>
    250 \u2013 315<\/td>0 \/ +0.052<\/td>0 \/ +0.081<\/td>0 \/ +0.130<\/td>0 \/ +0.210<\/td>0 \/ +0.320<\/td><\/tr>
    315 \u2013 400<\/td>0 \/ +0.057<\/td>0 \/ +0.089<\/td>0 \/ +0.140<\/td>0 \/ +0.230<\/td>0 \/ +0.360<\/td><\/tr>
    400 \u2013 500<\/td>0 \/ +0.063<\/td>0 \/ +0.097<\/td>0 \/ +0.155<\/td>0 \/ +0.250<\/td>0 \/ +0.400<\/td><\/tr>
    500 \u2013 630<\/td>0 \/ +0.070<\/td>0 \/ +0.110<\/td>0 \/ +0.175<\/td>0 \/ +0.280<\/td>0 \/ +0.440<\/td><\/tr>
    630 \u2013 800<\/td>0 \/ +0.080<\/td>0 \/ +0.125<\/td>0 \/ +0.200<\/td>0 \/ +0.320<\/td>0 \/ +0.500<\/td><\/tr>
    800 \u2013 1000<\/td>0 \/ +0.090<\/td>0 \/ +0.140<\/td>0 \/ +0.230<\/td>0 \/ +0.360<\/td>0 \/ +0.560<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
    \n\n

    Interpretation of the table<\/h2>\n\n

    For the selected nominal diameter range:<\/p>\n\n

      \n
    1. Read the upper deviation for a given tolerance zone.<\/li>\n\n\n\n
    2. Add it to the nominal dimension.<\/li>\n\n\n\n
    3. The resulting range determines the actual range of hole drilling.<\/li>\n<\/ol>\n\n
      \n\n

      Application in practice<\/h2>\n\n

      H7 \u2013 used for bearing seats and precision fits.H8 \u2013 general structural fits.H9 \u2013 less stressed components.H10\u2013H11 \u2013 designs with lower precision requirements.<\/p>\n\n

      When regenerating holes for bushings and pins, the H7 or H8 field is most often used, depending on the required accuracy.<\/p>\n\n

      \n\n

      Reference to standards<\/h2>\n\n

      Dimensional tolerances are specified in:<\/p>\n\n

      ISO 286-1 \u2013 Tolerances and FitsISO 286-2 \u2013 Numerical Deviations<\/p>\n","protected":false},"excerpt":{"rendered":"

      Introduction Tolerance zones H7\u2013H11 define the permissible dimensional deviations of holes in the basic hole system in accordance with ISO 286-2. This system is widely used in machine construction, hole regeneration and in the selection of bearing, bushing and pin fits. W polu tolerancji H dolna odchy\u0142ka wynosi 0, co oznacza, \u017ce rzeczywisty wymiar otworu […]<\/p>\n","protected":false},"author":6,"featured_media":110299,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","footnotes":""},"class_list":["post-110298","page","type-page","status-publish","has-post-thumbnail","hentry","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"_links":{"self":[{"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/pages\/110298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/comments?post=110298"}],"version-history":[{"count":1,"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/pages\/110298\/revisions"}],"predecessor-version":[{"id":110300,"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/pages\/110298\/revisions\/110300"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/media\/110299"}],"wp:attachment":[{"href":"https:\/\/borweld.com\/en\/wp-json\/wp\/v2\/media?parent=110298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}