[et_pb_section fb_built=”1″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22background_color%22%93}”][et_pb_row _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_font=”|700|||||||” header_text_align=”center” header_text_color=”#FFFFFF” header_font_size=”56px” global_colors_info=”{}”]<\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/driveshaftjoint.com\/wp-content\/uploads\/2026\/03\/Product-Overview.webp” title_text=”Product Overview” _builder_version=”4.27.2″ _module_preset=”default” custom_margin=”68px||||false|false” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_2_font=”|700|||||||” header_2_font_size=”40px” header_2_line_height=”1.3em” global_colors_info=”{}”]<\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
A\u00a0PTO shaft for feed mixers<\/strong>\u00a0(also called a feed mixer drive shaft or TMR mixer PTO shaft) is a telescoping mechanical driveline that transmits rotational power from a tractor’s Power Take-Off output directly to the input gearbox of a vertical or horizontal Total Mixed Ration (TMR) feed mixer.<\/p>\n The shaft bridges the distance between the tractor’s PTO stub shaft and the mixer’s input flange, converting engine torque into the high-torque, low-speed rotation that drives augers, paddles, and cutting knives inside the mixer drum. Without a correctly specified drive shaft, the tractor’s PTO gearbox absorbs every shock load generated by the mixing process \u2014 an expensive failure mode that can cost\u00a0$4,000\u2013$12,000<\/strong>\u00a0in gearbox repairs per incident.<\/p>\n Feed mixer PTO shafts differ from standard agricultural drivelines in three critical ways:\u00a0higher peak torque ratings<\/strong>\u00a0(frozen feed creates start-up spikes 3\u20135\u00d7 the continuous running load),\u00a0calibrated friction clutch protection<\/strong>\u00a0to absorb those spikes before they reach the gearbox, and\u00a0heavier-wall tube profiles<\/strong>\u00a0that resist fatigue cracking under the constant compression-extension cycling of a three-point-mounted mixer.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_2_font=”|700|||||||” header_2_text_align=”center” header_2_font_size=”40px” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” text_font=”|700||on|||||” text_text_color=”gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941″ text_font_size=”13px” text_line_height=”0.5em” global_colors_info=”{%22gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941%22:%91%22text_text_color%22%93}”]<\/p>\n How It Works<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_2_font=”|700|||||||” header_2_text_align=”center” header_2_font_size=”40px” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_2_font=”|700|||||||” header_2_text_align=”center” header_2_text_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ header_2_font_size=”40px” header_2_line_height=”0.1em” global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22header_2_text_color%22%93}”]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n The PTO shaft performs four mechanical functions simultaneously. Understanding each one helps you spec the right shaft for your mixer’s specific load profile.<\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_4,1_4,1_4,1_4″ use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”1_4″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”gcid-primary-color” custom_padding=”20px|15px|30px|15px|false|false” border_radii=”on|4px|4px|4px|4px” border_width_top=”4px” border_color_top=”gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941″ global_colors_info=”{%22gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941%22:%91%22border_color_top%22%93,%22gcid-primary-color%22:%91%22background_color%22%93}”][et_pb_blurb title=”Torque Transmission” use_icon=”on” font_icon=”||divi||400″ icon_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ image_icon_width=”77px” _builder_version=”4.27.2″ _module_preset=”default” header_font=”|600|||||||” header_text_align=”center” text_orientation=”center” global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22icon_color%22%93}”]<\/p>\n Converts tractor engine torque into the rotational force needed to turn mixer augers through dense, compacted, or partially frozen feed material. Rated continuously from 12 kW (L1\/G2) up to 119 kW (G50) at 540 RPM.<\/p>\n [\/et_pb_blurb][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”gcid-primary-color” custom_padding=”20px|15px|30px|15px|false|false” border_radii=”on|4px|4px|4px|4px” border_width_top=”4px” border_color_top=”gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941″ global_colors_info=”{%22gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941%22:%91%22border_color_top%22%93,%22gcid-primary-color%22:%91%22background_color%22%93}”][et_pb_blurb title=”Overload Absorption” use_icon=”on” font_icon=”||divi||400″ icon_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ image_icon_width=”77px” _builder_version=”4.27.2″ _module_preset=”default” header_font=”|600|||||||” header_text_align=”center” text_orientation=”center” global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22icon_color%22%93}”]<\/p>\n The integrated friction clutch slips at a factory-set torque threshold when frozen feed, a foreign object, or motor stall creates a spike above the rated load. This prevents the $4,000\u2013$12,000 tractor gearbox failures common with unprotected drivelines.<\/p>\n [\/et_pb_blurb][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”gcid-primary-color” custom_padding=”20px|15px|30px|15px|false|false” border_radii=”on|4px|4px|4px|4px” border_width_top=”4px” border_color_top=”gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941″ global_colors_info=”{%22gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941%22:%91%22border_color_top%22%93,%22gcid-primary-color%22:%91%22background_color%22%93}”][et_pb_blurb title=”Length Compensation” use_icon=”on” font_icon=”||divi||400″ icon_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ image_icon_width=”77px” _builder_version=”4.27.2″ _module_preset=”default” header_font=”|600|||||||” header_text_align=”center” text_orientation=”center” global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22icon_color%22%93}”]<\/p>\n The telescoping inner\/outer tube allows the shaft to shorten and lengthen as the tractor turns or the mixer shifts position on the 3-point hitch. Without this, the shaft would either pull apart or bottom out \u2014 both causing immediate failure.<\/p>\n [\/et_pb_blurb][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”gcid-primary-color” custom_padding=”20px|15px|30px|15px|false|false” border_radii=”on|4px|4px|4px|4px” border_width_top=”4px” border_color_top=”gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941″ global_colors_info=”{%22gcid-ee213da8-50e8-4d78-8ef0-42d6a4e06941%22:%91%22border_color_top%22%93,%22gcid-primary-color%22:%91%22background_color%22%93}”][et_pb_blurb title=”Angle Accommodation” use_icon=”on” font_icon=”||divi||400″ icon_color=”gcid-acbffa84-20fc-4094-9006-129b9fb3c311″ image_icon_width=”77px” _builder_version=”4.27.2″ _module_preset=”default” header_font=”|600|||||||” header_text_align=”center” text_orientation=”center” global_colors_info=”{%22gcid-acbffa84-20fc-4094-9006-129b9fb3c311%22:%91%22icon_color%22%93}”]<\/p>\n Universal joints at each end allow the shaft to operate at an angle between the tractor PTO stub and the mixer input shaft \u2014 up to 80\u00b0 on wide-angle variants \u2014 without binding, vibration, or uneven torque delivery that accelerates cross kit bearing wear.<\/p>\n [\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.27.2″ _module_preset=”default” background_color=”#f4f6f8″ global_colors_info=”{}”][et_pb_row _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.27.2″ _module_preset=”default” header_2_font=”|700|||||||” header_2_text_align=”center” header_2_font_size=”40px” header_2_line_height=”1.4em” global_colors_info=”{}”]<\/p>\n [\/et_pb_text][et_pb_accordion _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”][et_pb_accordion_item title=”What PTO shaft series is best for a vertical auger TMR feed mixer?” open=”on” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n For vertical auger TMR mixers, the\u00a0S Series star-profile<\/strong>\u00a0is the preferred choice. Vertical augers frequently reverse direction to dislodge impacted silage or straw \u2014 round-spline (G Series) tubes develop backlash under repeated torque reversals within one or two seasons, leading to the characteristic knocking sound that precedes tube failure. The S Series multi-lobe geometry eliminates this by transmitting torque through shape contact rather than spline teeth alone. For mixers between 35\u201379 kW PTO, specify\u00a0S8 (2,250 Nm peak)<\/strong>\u00a0or\u00a0S42 (2,500 Nm peak)<\/strong>. For compact tractors under 35 kW, the\u00a0L5 lemon tube (1,050 Nm peak)<\/strong>\u00a0provides the thicker wall needed to absorb frozen-feed start-up spikes.<\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Why does my feed mixer keep destroying PTO shafts in winter?” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n The most common cause is\u00a0cold-start torque spikes<\/strong>. Frozen or very cold feed increases mixing resistance by 3\u20135\u00d7 the normal running load. A PTO shaft rated for your tractor’s continuous PTO output at normal operating conditions may be significantly undersized for the momentary torque peak that occurs during cold-morning engagement.<\/p>\n The solution is either: (1)\u00a0upgrade one grade higher<\/strong>\u00a0than your calculated tractor PTO horsepower match, or (2) ensure the friction clutch is correctly specified \u2014 not a generic agricultural clutch, but one calibrated to the specific peak torque of your mixer series. If your current shaft has no friction clutch, or has a clutch that has been tightened beyond its rated setting, that is the primary failure cause.<\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Do I need an overrunning clutch or a friction clutch for my feed mixer?” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n Every 8 operating hours<\/strong>\u00a0under continuous full-load conditions \u2014 which is the standard for daily dairy TMR operations. Use NLGI #2 lithium-complex grease (EP2 rated, temperature range \u221220\u00b0C to +120\u00b0C).<\/p>\n Apply through the grease nipple on each trunnion cap until fresh grease purges from the bearing seal, confirming the needle roller cavity is fully charged. Feed mixers typically run 1\u20133 hours per day in intensive operations \u2014 that equates to a greasing interval of every 3\u20138 days depending on your schedule. Extend this interval only with sealed, pre-greased cross kits specified for low-maintenance applications; contact us if this is a requirement.<\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”How often should I grease feed mixer PTO shaft cross kits?” _builder_version=”4.27.2″ _module_preset=”default” global_colors_info=”{}” open=”off”]<\/p>\n Every 8 operating hours<\/span><\/<\/span>strong<\/span>><\/span> under continuous full-load conditions \u2014 which is the standard for daily dairy TMR operations. Use NLGI #2 lithium-complex grease (EP2 rated, temperature range \u221220\u00b0C to +120\u00b0C). <\/span><\/p>\n Apply through the grease nipple on each trunnion cap until fresh grease purges from the bearing seal, confirming the needle roller cavity is fully charged. Feed mixers typically run 1\u20133 hours per day in intensive operations \u2014 that equates to a greasing interval of every 3\u20138 days depending on your schedule. Extend this interval only with sealed, pre-greased cross kits specified for low-maintenance applications; contact us if this is a requirement.<\/span><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":" PTO Shaft for Feed MixersWhat Is a PTO Shaftfor Feed Mixers?A\u00a0PTO shaft for feed mixers\u00a0(also called a feed mixer drive shaft or TMR mixer PTO shaft) is a telescoping mechanical driveline that transmits rotational power from a tractor’s Power Take-Off output directly to the input gearbox of a vertical or horizontal Total Mixed Ration (TMR) […]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-1964","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/pages\/1964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/comments?post=1964"}],"version-history":[{"count":7,"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/pages\/1964\/revisions"}],"predecessor-version":[{"id":1985,"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/pages\/1964\/revisions\/1985"}],"wp:attachment":[{"href":"https:\/\/driveshaftjoint.com\/ru\/wp-json\/wp\/v2\/media?parent=1964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Feed Mixer PTO Shafts Display<\/h2>\n
Power Transmission:<\/h2>\n
Tractor PTO \u2192 Feed Mixer Auger<\/h2>\n
Common Questions \u2014Feed Mixer PTO Shafts<\/h2>\n