{"id":12104,"date":"2026-03-25T03:57:27","date_gmt":"2026-03-25T03:57:27","guid":{"rendered":"https:\/\/pto-gearbox.xyz\/?post_type=product&p=12104"},"modified":"2026-03-25T06:21:26","modified_gmt":"2026-03-25T06:21:26","slug":"pull-behind-mower-pto-gearbox-replaces-comer-t-279d","status":"publish","type":"product","link":"https:\/\/pto-gearbox.xyz\/id\/produk\/pull-behind-mower-pto-gearbox-replaces-comer-t-279d\/","title":{"rendered":"Gearbox PTO Mesin Pemotong Rumput Tarik | Menggantikan Comer T-279D"},"content":{"rendered":"

Gambaran Umum Produk<\/h2>\n

The EP-GC281 is a trailing mower PTO gearbox<\/b> designed for pull-behind (trailed) disc mower assemblies \u2014 the large-format mowing systems that connect to the tractor’s drawbar rather than the 3-point hitch. These machines cut wider swaths (2.4 m to 3.5 m+) at higher travel speeds than mounted mowers, and their gearboxes must handle correspondingly higher power levels. The EP-GC281 delivers 85 kW (114 HP) continuous input capacity through a 1:1 Gleason helical bevel gear set, producing 1,400 Nm of output torque at 540 RPM \u2014 enough to drive the full cutter bar assembly at operating speed without power loss. For operators who also need standalone gearboxes, our gearbox pertanian<\/a>\u00a0covers 400+ replacement models.<\/p>\n

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Ini Kotak roda gigi PTO<\/b> replaces the Comer Industries T-279D with matching shaft dimensions, mounting geometry, and torque capacity. The cast iron housing is engineered for the vibration and dust environment of high-speed field mowing, and the Gleason helical tooth profile runs quieter and smoother than straight bevel alternatives \u2014 reducing operator fatigue during 8-10 hour mowing shifts.<\/p>\n

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Specifications and Dimensions<\/h2>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nNilai<\/th>\n<\/tr>\n<\/thead>\n
Rasio Gigi<\/td>\n1 : 1 (speed transfer)<\/td>\n<\/tr>\n
Kecepatan Masukan<\/td>\n540 RPM<\/td>\n<\/tr>\n
Kecepatan Keluaran<\/td>\n540 RPM<\/td>\n<\/tr>\n
Daya Masukan<\/td>\n85 kW (114 HP)<\/td>\n<\/tr>\n
Torsi Keluaran<\/td>\n1,400 Nm<\/td>\n<\/tr>\n
Jenis Gigi<\/td>\nGleason Helical Bevel<\/td>\n<\/tr>\n
Bahan Perumahan<\/td>\nBesi cor<\/td>\n<\/tr>\n
Minyak<\/td>\nSAE 80W-90<\/td>\n<\/tr>\n
Menggantikan<\/td>\nComer T-279D<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Gleason Helical Bevel Gear Technology<\/h2>\n

The EP-GC281 uses Gleason-type helical spiral bevel gears rather than the straight bevel gears found in most agricultural PTO gearbox units. The difference matters in trailing mower service for three reasons. First, the curved tooth contact pattern in helical gears engages gradually rather than all at once \u2014 reducing the impulse noise and vibration that straight bevel gears produce at high rotational loads. Second, the load-bearing contact area on helical teeth is larger than on straight teeth of the same module, which increases the torque capacity for a given gear size. Third, the gradual engagement produces smoother power transmission, reducing the cyclic torsional spikes that accelerate bearing fatigue in high-duty-cycle mowing applications where the Kotak roda gigi PTO<\/b> runs at full load for hours at a time.<\/p>\n

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Aplikasi<\/h2>\n

Trailed Disc Mower Systems<\/h3>\n

The primary application is driving the cutter bar on large trailing disc mowers used for hay and forage production. These mowers connect to the tractor drawbar and run a PTO driveshaft back to the Kotak roda gigi PTO<\/b> mounted on the mower frame. The 1:1 ratio passes full PTO speed (540 RPM) to the cutter bar input, which then uses its own internal gear train to drive individual disc modules at 2,500-3,000 RPM. Browse all available models at our PTO gearbox product range<\/a>.<\/p>\n

Mower-Conditioner Combinations<\/h3>\n

Some trailing mower-conditioner machines (which cut and crimp forage in a single pass) use a gearbox in this power class to drive both the cutter bar and the conditioning rollers. The 85 kW capacity and 1,400 Nm torque handle the combined load of disc cutting and crop conditioning without oversizing the tractor requirement.<\/p>\n

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Large-Scale Forage Operations<\/h3>\n

Korean forage producers serving the dairy cattle industry harvest ryegrass, timothy, and alfalfa across 20-100+ hectare operations. Trailing disc mowers with this Kotak roda gigi PTO<\/b> cut 2-3 times per season at travel speeds of 8-15 km\/h, covering significantly more ground per hour than mounted mowers. The 85 kW capacity ensures the cutter bar receives full power even at high travel speeds in dense, mature forage stands where the cutting resistance per metre of working width is at its peak.<\/p>\n

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PTO Shaft and Companion Products<\/h2>\n

Trailing mowers run longer PTO driveshafts than 3-point hitch machines \u2014 often 1.5 to 2.5 metres between tractor PTO stub and gearbox input \u2014 and the shaft must accommodate the angular changes that occur as the trailed mower tracks across uneven ground. Wide-angle universal joints (up to 80 degrees working angle) and adequate shaft guard coverage are non-negotiable safety and durability requirements for this configuration. Korea Ever-Power manufactures heavy-duty PTO shaft assemblies<\/a> specifically designed for trailing implement service, with the extended length options and wide-angle joints that pull-behind mowers need.<\/p>\n

We also supply the EP-GT series trailing mower cutter bar assemblies that pair with the EP-GC281 gearbox, available in working widths from 2.4 m to 3.5 m. Contact our technical team for complete mower system packages including gearbox, cutter bar, PTO shaft, and spare blade sets \u2014 shipped as a single coordinated order.<\/p>\n

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Operating Tips for Trailing Mower Gearboxes<\/h2>\n

Trailing mower Kotak roda gigi PTO<\/b> units operate under different conditions than 3-point hitch mower gearboxes. The longer driveshaft introduces more angular variation as the mower tracks over uneven terrain, which changes the loading pattern on the gearbox input bearing. Check oil level before every mowing session \u2014 even a small seal leak on a trailing mower can drain the reservoir faster than expected because the gearbox may tilt as the mower follows ground contours. Change oil after the first 50 hours, then every 300-500 hours depending on operating severity. Clean the breather vent regularly \u2014 trailing mowers kick up more debris toward the gearbox than rear-mounted machines because the mower runs directly behind the tractor wheels.<\/p>\n

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When storing the mower for winter, run the Kotak roda gigi PTO<\/b> briefly to circulate warm oil through all bearing surfaces, then top up the oil level. This leaves a protective film on internal components that prevents corrosion during the idle months. Korea Ever-Power’s technical team can advise on maintenance intervals specific to your operating conditions \u2014 contact us with your mower model and typical annual usage hours.<\/p>\n

Pertanyaan dan Jawaban<\/h2>\n
Why is the gear ratio 1:1 instead of a speed-increasing ratio?<\/b>
\nThe EP-GC281 serves as a right-angle power transfer \u2014 redirecting the horizontal PTO drive 90 degrees to the cutter bar input. Speed multiplication happens inside the cutter bar’s own gear train, not in this gearbox. The 1:1 ratio passes full PTO speed and torque with minimal mechanical loss.<\/div>\n
What makes this different from a standard mounted mower gearbox?<\/b>
\nTrailing mower gearboxes handle higher continuous power (85 kW vs. 22-44 kW typical on mounted mowers), use Gleason helical gears for smoother operation, and are designed for the longer service cycles that commercial hay operations demand.<\/div>\n
Does this replace the Comer T-279D directly?<\/b>
\nYes. Shaft dimensions, mounting pattern, and torque ratings match the original design. Direct bolt-in replacement.<\/div>\n
What PTO speed does this gearbox require?<\/b>
\n540 RPM standard. Do not connect to a 1,000 RPM PTO without verifying the downstream cutter bar is rated for the resulting speed.<\/div>\n
How much does this PTO gearbox weigh?<\/b>
\nApproximately 45-50 kg depending on oil fill level. The cast iron housing accounts for most of the mass.<\/div>\n

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What Our Customers Say<\/h2>\n
Kim Tae-sung, Hay Producer, Chungcheongnam-do<\/b> (musim semi 2025)<\/span>
\n“Our trailing mower cuts 3 metres wide across 40 hectares. Put the EP-GC281 on after the original T-279D housing cracked. Completed the first and second cuts \u2014 about 250 hours \u2014 no problems. Noticeably quieter than the old gearbox, which I assume is the helical gears.”<\/div>\n
Hwang Joon-seo, Contract Mowing, Jeollanam-do<\/b> (musim panas 2025)<\/span>
\n“I mow for 20+ dairy farms. The trailing mower does 3x the area per hour vs. a mounted mower. This gearbox handles the 100+ HP load without issue. Oil stayed clean at the 200-hour change.”<\/div>\n
Choi Hye-rin, Agricultural Cooperative, Gyeongsangnam-do<\/b> (musim gugur 2024)<\/span>
\n“Ordered the gearbox together with a replacement cutter bar and PTO shaft from Ever-Power. Everything arrived together, dimensions matched, installation was straightforward. Saved about 40% compared to sourcing the Comer original.”<\/div>\n

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Pengemasan dan Pengiriman<\/h2>\n

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

Trailing mower gearbox with integrated 1:1 Gleason helical bevel gear set rated at 85 kW (114 HP). Designed for pull-behind disc mowers requiring 540 RPM input with 1,400 Nm output torque. Replaces Comer T-279D. Cast iron housing. Supplied as complete assembly with PTO shaft guard and mounting hardware. ISO-certified by Korea Ever-Power.<\/p>","protected":false},"featured_media":12105,"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-12104","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\/id\/wp-json\/wp\/v2\/product\/12104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/comments?post=12104"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/media\/12105"}],"wp:attachment":[{"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/media?parent=12104"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/product_brand?post=12104"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/product_cat?post=12104"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/id\/wp-json\/wp\/v2\/product_tag?post=12104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}