{"id":2732,"date":"2021-11-26T13:38:44","date_gmt":"2021-11-26T12:38:44","guid":{"rendered":"https:\/\/dev.tbt.de\/deep-hole-drilling-process\/"},"modified":"2025-04-03T13:57:47","modified_gmt":"2025-04-03T11:57:47","slug":"deep-hole-drilling-process","status":"publish","type":"page","link":"https:\/\/www.tbt.de\/en\/deep-hole-drilling-process\/","title":{"rendered":"Deep-hole drilling process"},"content":{"rendered":"

[et_pb_section fb_built=”1″ _builder_version=”4.21.0″ _module_preset=”default” background_image=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/02\/TBT-Tiefbohr-ML500.jpg” parallax=”on” custom_padding=”40px|40px|40px|40px|true|true” background_last_edited=”on|desktop” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” background_color=”rgba(255,255,255,0.5)” width=”100%” max_width=”100%” custom_padding=”171px||171px||true|” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.21.0″ _module_preset=”default” header_font=”|||on|||||” header_text_align=”center” header_font_size=”5vw” header_letter_spacing=”1px” header_2_font=”|||on|||||” header_2_text_align=”center” header_2_letter_spacing=”2px” custom_margin=”20px||20px||true|false” header_font_size_tablet=”8vw” header_font_size_phone=”10vw” header_font_size_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

Deep-hole drilling process<\/h1>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(59,153,162,0.2) 30%|#ffffff 30%” background_color_gradient_start=”rgba(59,153,162,0.2)” background_color_gradient_start_position=”30%” background_color_gradient_end=”#ffffff” background_color_gradient_end_position=”30%” global_colors_info=”{}”][et_pb_row column_structure=”2_3,1_3″ make_equal=”on” custom_padding_last_edited=”on|phone” _builder_version=”4.16″ _module_preset=”default” custom_padding=”0px||0px||true|false” custom_padding_tablet=”” custom_padding_phone=”20px||20px||true|false” global_colors_info=”{}”][et_pb_column type=”2_3″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text admin_label=”Text” _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

TBT has significantly shaped and developed deep-hole drilling technology. In high-performance precision drilling, the single-lip drill has proven itself in practical use thanks to the achievable diameter tolerances and surface qualities, as well as the minimal runout. Therefore, the deep-hole drilling principle replaces drilling and reaming with one operation in a large number of applications and does so with extremely high process reliability.<\/p>\n

<\/p>\n

However, it doesn’t always have to be deep drilled. The combination of precision bore machining and high bore performance has also opened up the field of short and intricate bores to the single-lip drill.<\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ disabled_on=”off|off|off” _builder_version=”4.16″ _module_preset=”default” custom_css_main_element=”margin:auto;” global_colors_info=”{}”][et_pb_blurb title=”Seal housing method” use_icon=”on” font_icon=”||fa||900″ icon_placement=”left” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||14px||false|false” link_option_url=”#sealhousingmethod” custom_css_blurb_title=”padding-top:6px;” global_colors_info=”{}” icon_color__hover_enabled=”on|hover” icon_color__hover=”#ED5600″][\/et_pb_blurb][et_pb_blurb title=”Submersion method for shallow drilling depths” use_icon=”on” font_icon=”||fa||900″ icon_placement=”left” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||14px|||” link_option_url=”#submersion_method” custom_css_blurb_title=”padding-top:6px;” global_colors_info=”{}” icon_color__hover_enabled=”on|hover” icon_color__hover=”#ED5600″][\/et_pb_blurb][et_pb_blurb title=”Deep-hole drilling on machining centres” use_icon=”on” font_icon=”||fa||900″ icon_placement=”left” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||14px|||” link_option_url=”#deep-hole_drilling-MC” custom_css_blurb_title=”padding-top:6px;” global_colors_info=”{}” icon_color__hover_enabled=”on|hover” icon_color__hover=”#ED5600″][\/et_pb_blurb][et_pb_blurb title=”Deep-hole drilling key data” use_icon=”on” font_icon=”||fa||900″ icon_placement=”left” _builder_version=”4.16″ _module_preset=”default” custom_margin=”||14px|||” link_option_url=”#keydata” custom_css_blurb_title=”padding-top:6px;” global_colors_info=”{}” icon_color__hover_enabled=”on|hover” icon_color__hover=”#ED5600″][\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ _module_preset=”default” background_enable_color=”off” background_color_gradient_direction=”90deg” background_image=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/06\/TR12-160202-86-A.jpg” parallax=”on” custom_padding=”0px||0px||true|false” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(255,255,255,0) 70%|rgba(59,153,162,0.2) 70%” background_color_gradient_start=”rgba(255,255,255,0)” background_color_gradient_start_position=”70%” background_color_gradient_end=”rgba(59,153,162,0.2)” background_color_gradient_end_position=”70%” width=”100%” max_width=”100%” custom_margin=”0px||0px||true|false” custom_padding=”150px||150px||true|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ specialty=”on” module_id=”sealhousingmethod” _builder_version=”4.16″ _module_preset=”default” background_enable_color=”off” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(59,153,162,0.2) 30%|#ffffff 30%” background_color_gradient_start=”rgba(59,153,162,0.2)” background_color_gradient_start_position=”30%” background_color_gradient_end=”#ffffff” background_color_gradient_end_position=”30%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_2_font=”|||on|||||” header_2_text_color=”#3B99A2″ text_orientation=”right” custom_margin=”||24px|||” custom_padding=”50px|||||” custom_padding_tablet=”0px||||false|false” custom_padding_phone=”” custom_padding_last_edited=”on|phone” header_2_font_size_tablet=”” header_2_font_size_phone=”2em” header_2_font_size_last_edited=”on|phone” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

Seal housing method<\/h2>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

Single-lip solid drilling tools in the diameter range from 1.9 mm to approx. 50 mm are used in the seal housing method.<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

The tool lengths can be up to approx. 6000 mm. During this process, the tools are guided by steady rests. The distance between the steady rests should not exceed a maximum of 40-50 x tool diameter.<\/p>\n

The sealing to the machine spindle is achieved by the seal housing or the seal disc inside.<\/span><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ specialty_columns=”2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_row_inner _builder_version=”4.16″ _module_preset=”default” custom_padding=”0px||0px|||” global_colors_info=”{}”][et_pb_column_inner saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” text_line_height=”1.5em” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″]The cooling lubricant is supplied through one or more of the holes inside the tool. The cooling lubricant \/ chip mixture is discharged through a longitudinal slot (bead) on the outside of the tool shank.[\/et_pb_text][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2023\/06\/TBT-Tiefbohrtechnik-Sealing-Case-Procedure.svg” title_text=”TBT Tiefbohrtechnik seal housing method” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” global_colors_info=”{}”]<\/p>\n

The cutting edge extends over the radius of the bore being produced. The tool consists of a drill head, corrugated shank and the clamping element (sleeve). The conventional single-lip solid drill has a solid carbide head in which the cutting edge and guide pads are ground.<\/p>\n

[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=”1″ module_id=”submersion_method” _builder_version=”4.16″ _module_preset=”default” background_image=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/01\/pattern-369543-pixabay.svg” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” custom_padding=”0px|||||” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_2_font=”|||on|||||” header_2_text_color=”#FFFFFF” text_orientation=”center” background_layout=”dark” custom_padding_tablet=”0px||||false|false” custom_padding_phone=”” custom_padding_last_edited=”on|phone” header_2_font_size_tablet=”” header_2_font_size_phone=”2em” header_2_font_size_last_edited=”on|phone” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

Seal housing method for shallow drilling depths<\/h2>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”3_5,2_5″ make_equal=”on” _builder_version=”4.16″ _module_preset=”default” custom_padding=”||0px|||” global_colors_info=”{}”][et_pb_column type=”3_5″ _builder_version=”4.16″ _module_preset=”default” custom_css_main_element=”margin:auto;” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” text_orientation=”right” background_layout=”dark” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

Single-lip solid drilling tools are used within a diameter range of 0.7 mm to 50 mm. Since no steady rests are used, the drilling depth is limited to a maximum of 160 mm using the submersion method.<\/p>\n

[\/et_pb_text][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2023\/06\/TBT-Tiefbohrtechnik-Immersion-Procedure-white.svg” title_text=”TBT Tiefbohrtechnik submersion method” _builder_version=”4.16″ _module_preset=”default” custom_margin_tablet=”” custom_margin_phone=”||20px||false|false” custom_margin_last_edited=”on|phone” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”2_5″ _builder_version=”4.16″ _module_preset=”default” custom_css_main_element=”margin:auto;” global_colors_info=”{}”][et_pb_text _builder_version=”4.21.0″ _module_preset=”default” text_line_height=”1.5em” background_layout=”dark” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

This process is particularly suitable for drilling short bores. Solid carbide tools are being increasingly used in diameters between 1 and 12 mm and drilling depths that are not too large. The seal to the machine spindle is made via the immersion sleeve or immersion spindle.<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” background_layout=”dark” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

The cooling lubricant is supplied through one or more bores (or kidney-shaped aperture) inside the tool. The coolant chip mixture is discharged via a longitudinal groove (bead) on the outside of the tool shank.<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” background_layout=”dark” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

The cutting edge extends over the radius of the bore being produced. The tool consists of a drill head, corrugated shank and the clamping element (sleeve). The conventional single-lip solid drill has a solid carbide head in which the cutting edge and guide pads are ground.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ specialty=”on” module_id=”deep-hole_drilling-MC” _builder_version=”4.16″ _module_preset=”default” background_enable_color=”off” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”#ffffff 70%|rgba(59,153,162,0.2) 70%” background_color_gradient_start=”#ffffff” background_color_gradient_start_position=”70%” background_color_gradient_end=”rgba(59,153,162,0.2)” background_color_gradient_end_position=”70%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_2_font=”|||on|||||” header_2_text_color=”#3B99A2″ text_orientation=”right” custom_margin=”||24px|||” custom_padding=”50px|||||” custom_padding_tablet=”0px||||false|false” custom_padding_phone=”” custom_padding_last_edited=”on|phone” header_2_font_size_tablet=”” header_2_font_size_phone=”2em” header_2_font_size_last_edited=”on|phone” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

Deep-hole drilling on
machining centres (MC)<\/h2>\n

[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” text_orientation=”right” hover_enabled=”0″ text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}” sticky_enabled=”0″]The trend towards multi-station machining has resulted in single-lip drills being used increasingly on conventional machine tools, for example on machining centers.[\/et_pb_text][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2023\/06\/TBT-Tiefbohrtechnik-BAZ-EN-1.svg” title_text=”TBT Tiefbohrtechnik length calculation” _builder_version=”4.16″ _module_preset=”default” max_width=”75%” max_width_tablet=”80%” max_width_phone=”100%” max_width_last_edited=”on|phone” module_alignment=”right” module_alignment_tablet=”center” module_alignment_phone=”center” module_alignment_last_edited=”on|desktop” global_colors_info=”{}”][\/et_pb_image][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]Due to the combination of precise bore machining and high drilling performance, the single-lip drill is also used for short and intricate bores.[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_line_height=”1.5em” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

In contrast to deep-hole drilling machines, spot drill bushes are very rarely used in conventional machine tools. Therefore, for the use of a single-lip drill, a guide hole must first be made in the workpiece that is to be machined. This bore has special requirements, such as diameter tolerance and guide length.<\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ specialty_columns=”2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_row_inner _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_column_inner saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2023\/06\/TBT-Tiefbohrtechnik-BAZ-EN-3.svg” title_text=”TBT Tiefbohrtechnik machining centres” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”2″ custom_padding_last_edited=”on|phone” _builder_version=”4.16″ _module_preset=”default” custom_padding_tablet=”” custom_padding_phone=”||0px||false|false” global_colors_info=”{}”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_blurb title=”Any more questions?” use_icon=”on” font_icon=”||divi||400″ icon_color=”#000000″ image_icon_width=”41px” icon_alignment=”right” icon_alignment_tablet=”” icon_alignment_phone=”left” icon_alignment_last_edited=”on|phone” _builder_version=”4.16″ _module_preset=”default” header_font=”|700||on|||||” header_text_color=”#3B99A2″ header_font_size=”1.1em” body_font=”||||||||” body_text_color=”#000000″ body_font_size=”1em” body_line_height=”1.3em” background_color=”#FFFFFF” background_enable_image=”off” background_blend=”multiply” transform_scale_tablet=”” transform_scale_phone=”” transform_scale_last_edited=”on|desktop” transform_translate_tablet=”” transform_translate_phone=”” transform_translate_last_edited=”on|desktop” transform_rotate_tablet=”” transform_rotate_phone=”0deg|0deg|0deg” transform_rotate_last_edited=”on|phone” transform_skew_tablet=”” transform_skew_phone=”” transform_skew_last_edited=”on|desktop” transform_origin_tablet=”” transform_origin_phone=”” transform_origin_last_edited=”on|desktop” transform_styles_last_edited=”on|phone” text_orientation=”right” custom_margin=”-15px||||false|false” custom_padding=”15px|15px|15px|15px|true|true” scroll_vertical_motion_enable=”on” scroll_vertical_motion=”0|50|50|100|0.5|0.25|0″ transform_styles_tablet=”” transform_styles_phone=”” text_orientation_tablet=”” text_orientation_phone=”left” text_orientation_last_edited=”on|phone” custom_css_blurb_image=”margin-bottom:10px;” border_radii=”on|15px|15px|15px|15px” box_shadow_style=”preset1″ box_shadow_blur=”64px” box_shadow_color=”#e0e0e0″ icon_font_size=”41px” global_colors_info=”{}”]<\/p>\n

Our experts will be happy to advise you on the choice of suitable tools that we manufacture ourselves, e.g. single-lip drills, stepped drills, tools with indexable inserts or solid carbide drills.<\/p>\n

[\/et_pb_blurb][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_blurb title=”Tools” image=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/02\/TBT-Signet.png” _builder_version=”4.16″ _module_preset=”81ede553-9bcb-4200-aa45-923abf62d0d5″ custom_margin_tablet=”” custom_margin_phone=”” custom_margin_last_edited=”on|phone” link_option_url=”mailto:tbttools@tbt.de” link_option_url_new_window=”on” border_radii_image=”on|0%|0%|0%|0%” global_colors_info=”{}”]<\/p>\n

tbttools@tbt.de
T: +49 7123 976-352
F: +49 7123 976-350<\/p>\n

[\/et_pb_blurb][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ _module_preset=”default” background_enable_color=”off” background_color_gradient_direction=”90deg” background_image=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/06\/Retrofit-Header.jpg” custom_padding=”0px||0px||true|false” global_colors_info=”{}”][et_pb_row _builder_version=”4.16″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(255,255,255,0) 70%|rgba(59,153,162,0.2) 70%” background_color_gradient_start=”rgba(255,255,255,0)” background_color_gradient_start_position=”70%” background_color_gradient_end=”rgba(59,153,162,0.2)” background_color_gradient_end_position=”70%” width=”100%” max_width=”100%” custom_margin=”0px||0px||true|false” custom_padding=”150px||150px||true|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ specialty=”on” module_id=”keydata” _builder_version=”4.16″ _module_preset=”default” background_enable_color=”off” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(59,153,162,0.2) 30%|#ffffff 30%” background_color_gradient_start=”rgba(59,153,162,0.2)” background_color_gradient_start_position=”30%” background_color_gradient_end=”#ffffff” background_color_gradient_end_position=”30%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_2_font=”|||on|||||” header_2_text_color=”#3B99A2″ text_orientation=”right” custom_margin=”||24px|||” custom_padding=”50px|||||” custom_padding_tablet=”0px||||false|false” custom_padding_phone=”” custom_padding_last_edited=”on|phone” header_2_font_size_tablet=”” header_2_font_size_phone=”2em” header_2_font_size_last_edited=”on|phone” text_orientation_tablet=”left” text_orientation_phone=”left” text_orientation_last_edited=”on|tablet” global_colors_info=”{}”]<\/p>\n

Deep-hole drilling key data<\/h2>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_3_font=”|||on|||||” header_4_font=”|||on|||||” text_orientation=”right” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

Surface quality<\/h3>\n

<\/p>\n

The radial cutting forces that occur are transferred to the bore wall via the guide pads. This results in a press-smoothing of the surface. It can be further enhanced by the design of the guide pad. The result is excellent surface quality.<\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_3_font=”|||on|||||” header_4_font=”|||on|||||” text_orientation=”right” custom_margin=”||0px||false|false” text_orientation_tablet=”left” text_orientation_phone=”” text_orientation_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

The result<\/h4>\n

[\/et_pb_text][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2023\/06\/drill-quality.gif” title_text=”Bohrqualit\u00e4t” align=”right” align_tablet=”left” align_phone=”left” align_last_edited=”on|tablet” _builder_version=”4.21.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_2″ specialty_columns=”2″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_row_inner column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”2″ custom_padding_last_edited=”on|phone” _builder_version=”4.16″ _module_preset=”default” custom_padding_tablet=”” custom_padding_phone=”||0px||false|false” global_colors_info=”{}”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_blurb title=”Diameter tolerance” use_icon=”on” font_icon=”\||divi||400″ icon_color=”#000000″ image_icon_width=”41px” icon_alignment=”right” icon_alignment_tablet=”” icon_alignment_phone=”left” icon_alignment_last_edited=”on|phone” _builder_version=”4.16″ _module_preset=”default” header_font=”|700||on|||||” header_text_color=”#3B99A2″ header_font_size=”1.1em” body_font=”||||||||” body_text_color=”#000000″ body_font_size=”1em” body_line_height=”1.3em” background_color=”#FFFFFF” background_enable_image=”off” background_blend=”multiply” transform_scale_tablet=”” transform_scale_phone=”” transform_scale_last_edited=”on|desktop” transform_translate_tablet=”” transform_translate_phone=”” transform_translate_last_edited=”on|desktop” transform_rotate_tablet=”” transform_rotate_phone=”0deg|0deg|0deg” transform_rotate_last_edited=”on|phone” transform_skew_tablet=”” transform_skew_phone=”” transform_skew_last_edited=”on|desktop” transform_origin_tablet=”” transform_origin_phone=”” transform_origin_last_edited=”on|desktop” transform_styles_last_edited=”on|phone” text_orientation=”right” custom_margin=”-15px||||false|false” custom_padding=”15px|15px|15px|15px|true|true” scroll_vertical_motion_enable=”on” scroll_vertical_motion=”0|50|50|100|1|0.5|0″ transform_styles_tablet=”” transform_styles_phone=”” text_orientation_tablet=”” text_orientation_phone=”left” text_orientation_last_edited=”on|phone” custom_css_blurb_image=”margin-bottom:10px;” border_radii=”on|15px|15px|15px|15px” box_shadow_style=”preset1″ box_shadow_blur=”64px” box_shadow_color=”#e0e0e0″ icon_font_size=”41px” global_colors_info=”{}”]During production, diameter­tolerances of up to IT 7 can be achieved with TBT single-lip drills.[\/et_pb_blurb][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=”4.16″ _module_preset=”default” custom_padding=”||0px|||” global_colors_info=”{}”][et_pb_column_inner saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” text_font_size=”1.2em” text_line_height=”1.5em” header_3_font=”|||on|||||” global_colors_info=”{}”]<\/p>\n

Bore runout<\/h3>\n

<\/p>\n

The drill bushing or pilot bore, which rests against the workpiece, and the hole itself provide the single-lip drill with precise forced guidance, which keeps the runout within minimum limits.<\/p>\n

[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/www.tbt.de\/wp-content\/uploads\/2021\/11\/bohrungsverlauf.gif” title_text=”bore runout” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”1_2″ _builder_version=”4.16″ _module_preset=”default” custom_css_main_element=”margin:auto;” global_colors_info=”{}”][et_pb_text _builder_version=”4.16″ _module_preset=”default” header_4_font=”|||on|||||” global_colors_info=”{}”]<\/p>\n

Bore runout reference values<\/h4>\n

<\/p>\n

Horizontal axis: Drilling depth in mm
Vertical axis: Runout in mm
Upper graphic: rotating tool
Lower graphic: rotating workpiece<\/p>\n

[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

Deep-hole drilling processTBT has significantly shaped and developed deep-hole drilling technology. In high-performance precision drilling, the single-lip drill has proven itself in practical use thanks to the achievable diameter tolerances and surface qualities, as well as the minimal runout. Therefore, the deep-hole drilling principle replaces drilling and reaming with one operation in a large number […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-2732","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/pages\/2732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/comments?post=2732"}],"version-history":[{"count":2,"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/pages\/2732\/revisions"}],"predecessor-version":[{"id":7453,"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/pages\/2732\/revisions\/7453"}],"wp:attachment":[{"href":"https:\/\/www.tbt.de\/en\/wp-json\/wp\/v2\/media?parent=2732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}