{"id":12084,"date":"2026-03-25T03:05:51","date_gmt":"2026-03-25T03:05:51","guid":{"rendered":"https:\/\/pto-gearbox.xyz\/?post_type=product&p=12084"},"modified":"2026-03-25T03:05:58","modified_gmt":"2026-03-25T03:05:58","slug":"rotary-tiller-pto-gearbox-replaces-comer-tb-27c","status":"publish","type":"product","link":"https:\/\/pto-gearbox.xyz\/ru\/product\/rotary-tiller-pto-gearbox-replaces-comer-tb-27c\/","title":{"rendered":"\u0420\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c \u0440\u043e\u0442\u043e\u0440\u043d\u043e\u0433\u043e \u043a\u0443\u043b\u044c\u0442\u0438\u0432\u0430\u0442\u043e\u0440\u0430 | \u0417\u0430\u043c\u0435\u043d\u044f\u0435\u0442 Comer TB-27C"},"content":{"rendered":"
\n

\u041e\u0431\u0437\u043e\u0440 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430<\/h2>\n

Most agricultural \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> units alter the shaft speed \u2014 increasing or decreasing RPM through a gear ratio. The TB-27C does not. Its 1:1 direct-drive ratio passes the tractor’s 540 RPM straight through a 90-degree turn without changing the speed. The purpose is purely directional: converting the horizontal PTO axis to the vertical or angled axis that the tiller blade shaft requires. This preserves the full 693 Nm of torque at the output without the mechanical losses that speed-changing ratios introduce, making it the most efficient power transfer option. The 1:1 configuration also simplifies troubleshooting \u2014 if the tiller blade speed does not match the expected 540 RPM, the problem lies upstream in the PTO clutch or driveshaft rather than in the gearbox ratio. For equipment dealers and mechanics, this straightforward relationship between input and output speed makes the TB-27C one of the easiest \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> units to diagnose and service in the entire tiller gearbox family for \u0441\u0435\u043b\u044c\u0441\u043a\u043e\u0445\u043e\u0437\u044f\u0439\u0441\u0442\u0432\u0435\u043d\u043d\u0430\u044f \u043a\u043e\u0440\u043e\u0431\u043a\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447<\/a> applications where the tiller blade design is already optimized for 540 RPM.<\/p>\n

\"Rotary<\/p>\n

Rated at 40.5 kW (55 HP), the TB-27C sits between the lighter TB-22C (98 HP speed-increasing) and the compact TB-19C in the Comer tiller gearbox range. The GG25 cast iron housing weighs 39.5 kg \u2014 heavier than the TB-22C at 31.5 kg because the 1:1 gear arrangement (designated type 26) uses a larger-diameter gear pair with wider face width to handle the full 693 Nm torque without speed multiplication assistance.<\/p>\n<\/div>\n

Technical Data<\/h2>\n

\"rotary-tiller-pto-gearbox-tb27c-dimensions-combo-1\"<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Max. Input Power<\/td>\n40.5 kW \/ 55 HP<\/td>\n<\/tr>\n
Max. Output Torque<\/td>\n693 Nm<\/td>\n<\/tr>\n
\u0421\u043e\u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u0435<\/td>\n1 : 1<\/td>\n<\/tr>\n
Gear Arrangement<\/td>\n26<\/td>\n<\/tr>\n
Input Shaft (Z)<\/td>\n1 3\/8″ (6) Type A<\/td>\n<\/tr>\n
Output Shaft (X)<\/td>\n1 3\/8″ (6) Type C<\/td>\n<\/tr>\n
\u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u044b \u0434\u043b\u044f \u043a\u043e\u0440\u043f\u0443\u0441\u0430<\/td>\nCast Iron GG25<\/td>\n<\/tr>\n
Oil Capacity<\/td>\n1.1 L (SAE 80W-90)<\/td>\n<\/tr>\n
Oil Change Interval<\/td>\n500 h<\/td>\n<\/tr>\n
\u041c\u0430\u0441\u0441\u0430<\/td>\n39.5 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Where Direct-Drive Matters<\/h2>\n

The 1:1 ratio \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> is specifically designed for rotary tillers whose blade geometry is optimized for 540 RPM at the rotor. Many European and Korean tiller manufacturers design their blade pitch, rotor diameter, and hood clearance around this exact speed. Using a speed-increasing gearbox on these tillers would over-speed the blades, causing excessive soil throw, higher power consumption, and accelerated blade wear. The TB-27C preserves the design intent of the tiller while handling the 90-degree power redirect that the implement layout requires.<\/p>\n

\"rotary-tiller-pto-gearbox-tb27c-detail-combo-1\"<\/p>\n

The GG25 grey cast iron housing on this \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> provides the vibration damping characteristics that rotary tiller applications demand. Dozens of blade tips striking soil simultaneously create continuous high-frequency vibration that can fatigue other housing materials over thousands of operating hours. The flake graphite structure in GG25 absorbs and dissipates this vibrational energy more effectively than aluminium or ductile iron alternatives, extending the service life of both the housing and the internal bearing races.<\/p>\n

Typical Applications<\/h2>\n

The TB-27C powers medium-frame rotary tillers (1.5-2.5 m working width) on 40-55 HP utility tractors. In Korea, this covers the workhorse tractor class used on rice paddies, vegetable field preparation, and greenhouse soil work. The 693 Nm torque handles typical paddy soil and loamy vegetable beds without difficulty, while the 39.5 kg housing weight keeps the overall tiller balance manageable on this tractor size class. For operators who also need PTO driveshafts, browse our PTO shaft range<\/a>.<\/p>\n

Rice Paddy Preparation<\/h3>\n

Korean rice farms depend on rotary tillers for spring seedbed preparation. The TB-27C’s 1:1 ratio delivers the exact 540 RPM that most 1.5-2.0 m tillers are designed for, producing the fine, level soil texture that rice transplanting requires. The 693 Nm torque handles both dry tilling and wet paddy conditions where waterlogged soil creates higher blade resistance. The 55 HP rating accommodates the 40-55 HP utility tractors that dominate Korean rice farm equipment fleets, including popular models from Daedong, LS Mtron, and Kukje.<\/p>\n

Greenhouse Soil Renovation<\/h3>\n

Heated greenhouse operations in Jeju-do and the southern coast use compact tillers with this \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> for annual soil renovation \u2014 breaking up compacted growing beds, incorporating organic amendments, and preparing seedbeds between crop rotations. The 39.5 kg weight is manageable on the 40-55 HP tractors that fit through standard greenhouse door widths. The direct-drive \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> avoids over-speeding the tiller blades in confined spaces where excessive soil throw could damage greenhouse plastic sheeting, drip irrigation lines, and seedling trays.<\/p>\n

\"PTO<\/p>\n

Companion Products<\/h2>\n

\"PTO<\/p>\n

Korea Ever-Power carries the complete TB tiller gearbox series (TB-19C through TB-278C) and over 400 additional replacement \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> models for mowers, cutters, balers, spreaders, and mixers. ISO 9001-certified manufacturing, 12-month warranty covering defects in materials and workmanship, 2-4 day Korea delivery. We also supply tiller blade sets, side gearboxes, and chain case components to complete your rotary tiller maintenance and repair requirements in a single order. For the full catalogue, visit our PTO gearbox product range<\/a>.<\/p>\n

Maintenance and Oil Change<\/h2>\n
    \n
  • \u25c6<\/span>Fill with 1.1 L of SAE 80W-90 before first use. The \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> ships dry.<\/li>\n
  • \u25c6<\/span>First oil change at 50 hours \u2014 tiller gearboxes generate metallic particles during break-in.<\/li>\n
  • \u25c6<\/span>Standard interval: every 500 hours or annually. Shorten to 300 hours in heavy clay soils.<\/li>\n
  • \u25c6<\/span>Clean soil buildup from housing exterior after each session, especially around shaft seals and breather.<\/li>\n
  • \u25c6<\/span>Inspect the magnetic drain plug for metallic debris at each oil change \u2014 early warning of gear or bearing wear.<\/li>\n
  • \u25c6<\/span>At end of season, change oil and store with the \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> in an upright position to keep seals lubricated.<\/li>\n<\/ul>\n

    \"PTO<\/p>\n

    Quality Certifications<\/h2>\n

    ISO 9001:2015-certified manufacturing with individual bench testing on every \u0440\u0435\u0434\u0443\u043a\u0442\u043e\u0440 \u0412\u041e\u041c<\/b> unit. CE safety marking where applicable. 12-month warranty covering materials and workmanship defects. Korea warehouse with 2-4 day delivery nationwide. Over 20 years of agricultural transmission manufacturing experience.<\/p>\n

    Questions and Answers<\/h2>\n
    Why choose a 1:1 gearbox over a speed-increasing model?<\/b>
    \nWhen the tiller blades are designed for 540 RPM rotor speed. Over-speeding blades wastes power, increases soil throw, and accelerates wear. The 1:1 ratio delivers the designed speed with maximum torque efficiency.<\/div>\n
    Is this a direct Comer TB-27C replacement?<\/b>
    \nYes. Both shafts (1 3\/8 inch 6-spline, Type A and Type C), mounting pattern, and torque ratings match exactly.<\/div>\n
    Can I use this gearbox on a 70 HP tractor?<\/b>
    \nThe TB-27C is rated for 55 HP maximum. For 70+ HP tractors, the TB-22C (98 HP, 1:1.93 ratio) is the correct choice.<\/div>\n
    What oil and how much?<\/b>
    \n1.1 litres of SAE 80W-90. First change at 50 hours, then every 500 hours.<\/div>\n

    Customer Feedback<\/h2>\n
    Park Sung-jin, Rice Farmer, Jeollanam-do<\/b> (spring 2025)<\/span>
    \n“Our 50 HP Daedong with a 2-metre tiller. The TB-27C replaced the original after 6 years of service. Direct bolt-in, finished spring tilling \u2014 about 150 hours \u2014 without any problems. The 1:1 ratio gives exactly the blade speed our tiller was designed for.”<\/div>\n
    Yoon Hae-won, Vegetable Farm, Gyeonggi-do<\/b> (autumn 2024)<\/span>
    \n“We till garlic and onion beds 3 times per year. The TB-27C handles our clay soil without stalling. At 39.5 kg it’s heavier than the smaller models but the 693 Nm torque justifies the weight.”<\/div>\n
    Kwon Min-su, Equipment Dealer, Daejeon<\/b> (early 2025)<\/span>
    \n“Been selling tiller gearboxes for 10 years. The TB-27C fills the gap between the lighter tillers and the heavy-duty TB-22C. Good seller for the 40-55 HP market segment that dominates Korean mid-size farm tractor sales.”<\/div>\n

    Packing and Shipping<\/h2>\n

    \"PTO<\/p>","protected":false},"excerpt":{"rendered":"

    Direct-drive 1:1 ratio rotary tiller gearbox handling 40.5 kW (55 HP) input with 693 Nm output torque. GG25 cast iron, 39.5 kg, 1.1 L oil. Dual 1-3\/8 inch 6-spline shafts (Type C input, Type A output). Gear arrangement 26. Replaces Comer TB-27C. For medium-duty rotary tillers and power harrows on 40-55 HP tractors.<\/p>","protected":false},"featured_media":12085,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[11349],"product_tag":[],"class_list":{"0":"post-12084","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pto-gearbox","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/product\/12084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/comments?post=12084"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/media\/12085"}],"wp:attachment":[{"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/media?parent=12084"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/product_brand?post=12084"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/product_cat?post=12084"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/ru\/wp-json\/wp\/v2\/product_tag?post=12084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}