{"id":12000,"date":"2026-03-24T07:19:20","date_gmt":"2026-03-24T07:19:20","guid":{"rendered":"https:\/\/pto-gearbox.xyz\/?post_type=product&p=12000"},"modified":"2026-03-24T07:19:26","modified_gmt":"2026-03-24T07:19:26","slug":"round-baler-pto-gearbox-t-304a-13-ratio-heavy-duty","status":"publish","type":"product","link":"https:\/\/pto-gearbox.xyz\/tr\/urun\/round-baler-pto-gearbox-t-304a-13-ratio-heavy-duty\/","title":{"rendered":"Yuvarlak Balya Makinesi PTO \u015eanz\u0131man\u0131 T-304A | 1:3 Oranl\u0131 A\u011f\u0131r Hizmet Tipi"},"content":{"rendered":"

Round Baler PTO Gearbox Overview<\/h2>\n

The T-304A is a heavy-duty PTO \u015fanz\u0131man\u0131<\/b> engineered for round baler equipment and other high-torque agricultural applications. With a 1:3 speed-increasing ratio, this unit converts the tractor’s 540 RPM PTO output to approximately 1,620 RPM at the driven end, matching the speed requirements of baler pickup mechanisms and compression rollers. The maximum output torque rating of 94.5 daNm places this gearbox firmly in the heavy-duty class \u2014 well above the lighter units used on mowers and spreaders \u2014 reflecting the sustained loading that round balers impose during hay and straw baling operations.<\/p>\n

\u00a0 \"round-baler-pto-gearbox-t304a-product-combo-1\"<\/p>\n

Manufactured as a direct replacement for the Comer Industries T-304A, this tar\u0131msal PTO di\u015fli kutusu<\/b> matches the original mounting dimensions, shaft specifications (1 3\/8-inch, 6-spline input), and bolt patterns. The cast iron housing provides the structural rigidity needed to contain the higher bearing loads that come with the 94.5 daNm torque rating. Oil capacity is 1.1 litres \u2014 larger than smaller-frame gearboxes \u2014 to maintain adequate lubrication under the sustained, high-load operating conditions typical of baling work. The gearbox ships without oil, allowing operators to fill with SAE 80W-90 gear lubricant before first use.<\/p>\n

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Teknik \u00d6zellikler<\/h2>\n

Verified performance and dimensional data for the T-304A trakt\u00f6r PTO \u015fanz\u0131man\u0131<\/b>T\u00fcm de\u011ferler standart 540 RPM giri\u015f ko\u015fullar\u0131na kar\u015f\u0131l\u0131k gelir.<\/p>\n

\"round-baler-pto-gearbox-t304a-dimensions-combo-1\"<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametre<\/th>\nDe\u011fer<\/th>\n<\/tr>\n<\/thead>\n
Ba\u015fvuru<\/td>\nRound balers, mowers, various agricultural equipment<\/td>\n<\/tr>\n
Maksimum \u00c7\u0131k\u0131\u015f Torku<\/td>\n94.5 daNm<\/td>\n<\/tr>\n
Di\u015fli Oran\u0131 (Artan)<\/td>\n1 : 3<\/td>\n<\/tr>\n
Di\u015fli Oran\u0131 (Azalt\u0131c\u0131)<\/td>\n3 : 1<\/td>\n<\/tr>\n
Giri\u015f Mili<\/td>\n1 3\/8″ (6) Z6<\/td>\n<\/tr>\n
Konut Malzemesi<\/td>\nD\u00f6kme Demir<\/td>\n<\/tr>\n
Ya\u011f Kapasitesi<\/td>\n1.1 L<\/td>\n<\/tr>\n
SAE S\u0131n\u0131f\u0131 Ya\u011f<\/td>\n80W-90<\/td>\n<\/tr>\n
Ya\u011f De\u011fi\u015fim Aral\u0131\u011f\u0131<\/td>\n500 saat<\/td>\n<\/tr>\n
Petrol y\u00fckl\u00fc gemiler<\/td>\nHay\u0131r (kuru)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/div>\n

How the Round Baler Gearbox Works<\/h2>\n

In a round baling operation, the tractor PTO drives a driveshaft at 540 RPM. That shaft connects to this gearbox through a 1 3\/8-inch, 6-spline input coupling. Inside the cast iron housing, a spiral bevel gear pair redirects the power 90 degrees and multiplies the speed by a factor of three. The output shaft, now spinning at roughly 1,620 RPM, feeds into the baler’s pickup mechanism, compression belts, or roller chain drive depending on the baler model.<\/p>\n

\"Round<\/p>\n

The torque demands on a round baler PTO gearbox<\/b> are substantially higher than on mower or spreader gearboxes. As the bale chamber fills, the resistance on the compression rollers increases steadily until the bale reaches its target diameter and density. At peak compression, the gearbox may see sustained loads near its 94.5 daNm output torque limit for extended periods \u2014 unlike a flail mower where loads are intermittent and impact-driven. This is why the T-304A uses a larger housing, heavier-duty bearings, and a 1.1-litre oil reservoir compared to lighter models in the same ratio family. The larger oil volume dissipates heat more effectively during the sustained high-load baling cycles that can last 30-60 minutes per field pass.<\/p>\n

\"round-baler-pto-gearbox-t304a-application-combo-1\"<\/p>\n

Uygulama Senaryolar\u0131<\/h2>\n

Round Hay Baling<\/h3>\n

The primary application for this gearbox. Round balers compress cut hay, straw, or grass into cylindrical bales ranging from 1.2 m to 1.8 m in diameter. The PTO \u015fanz\u0131man\u0131<\/b> delivers the speed and torque needed to drive the baler’s belt or chain system through the full compression cycle \u2014 from an empty chamber to a tightly packed 400-500 kg bale \u2014 without stalling or overheating.<\/p>\n

\"pto-gearbox-application-6\"<\/p>\n

Straw and Crop Residue Baling<\/h3>\n

After grain harvesting, round balers collect and compress rice straw, wheat straw, and corn stalks. This material is denser and more abrasive than grass hay, placing higher demands on the gearbox. The T-304A’s 94.5 daNm torque rating provides the necessary margin for these tougher materials.<\/p>\n

Silage Wrapping Operations<\/h3>\n

Some combined baler-wrapper machines use gearboxes in this power class to drive both the baling mechanism and the wrapping turntable. The 1:3 ratio delivers adequate speed for the wrapper while the high torque handles the compression rollers simultaneously.<\/p>\n

Operating Environment and Conditions<\/h2>\n

Round baling is a high-duty-cycle operation. The PTO \u015fanz\u0131man\u0131<\/b> runs at or near full rated load for the duration of each bale, typically 3-5 minutes, with only brief pauses between bales for the wrapping or ejection cycle. On a typical Korean hay farm, a baler may produce 50-100 bales per day during peak season, meaning the gearbox accumulates 4-8 hours of near-continuous heavy loading daily. The T-304A is rated for this kind of sustained service \u2014 the 1.1-litre oil reservoir, combined with the heat-dissipating properties of the cast iron housing, keeps operating temperatures within safe limits even during extended baling sessions in summer ambient temperatures of 30-35 degrees Celsius.<\/p>\n

Dust is a constant factor in baling environments. Chaff, fine grass particles, and soil dust settle on the gearbox exterior during every field pass. The double-lip shaft seals prevent contamination from entering the bearing cavity, but operators should periodically wipe down the housing to prevent debris accumulation around the breather vent, which could restrict pressure equalization and lead to seal leakage.<\/p>\n

\"pto-gearbox-factory-7\"<\/p>\n

<\/p>\n

\u0130lgili ve Tamamlay\u0131c\u0131 \u00dcr\u00fcnler<\/h2>\n

Round baler driveshafts operate under higher sustained torque than mower or spreader shafts. A correctly rated PTO shaft with proper guard coverage is a safety requirement, not an optional accessory. Korea Ever-Power supplies wide-angle PTO shafts with the torque ratings needed for baler service. For the full range of PTO \u015faft tertibatlar\u0131<\/a>, visit our shaft catalogue. For other tar\u0131msal \u015fanz\u0131man<\/a> models, see our complete product line.<\/p>\n

\"PTO<\/p>\n

<\/p>\n

S\u0131k\u00e7a Sorulan Sorular<\/h2>\n
What makes this gearbox different from a mower PTO gearbox?<\/b>
\nThe T-304A is built for sustained high-torque loads. Its 94.5 daNm output torque rating, 1.1-litre oil capacity, and heavier cast iron housing are sized for the continuous loading that round balers generate \u2014 much higher than the intermittent loads from mowing equipment.<\/div>\n
Does this PTO gearbox fit all round baler brands?<\/b>
\nIt is a direct replacement for balers originally equipped with the Comer T-304A. If your baler uses a different gearbox model, compare shaft sizes, bolt patterns, and torque ratings before ordering.<\/div>\n
What oil and how much does it need?<\/b>
\nSAE 80W-90, 1.1 litres. First change at 50-70 hours, then every 500 hours or annually.<\/div>\n
Can I use this gearbox at 1000 RPM PTO?<\/b>
\nThe T-304A is rated for 540 RPM. Using 1000 RPM input doubles the speed and changes the torque characteristics \u2014 contact our team to verify if your application falls within safe limits.<\/div>\n
How heavy is this unit?<\/b>
\nThe gearbox weighs approximately 25-28 kg without oil. With 1.1 litres of 80W-90, total installed weight is roughly 26-29 kg.<\/div>\n
Where can I buy this round baler PTO gearbox in Korea?<\/b>
\nKorea Ever-Power stocks the T-304A in our domestic warehouse. Orders before 2 PM KST ship same day. Browse additional models at PTO di\u015fli kutusu katalo\u011fumuz<\/a>.<\/div>\n

<\/p>\n

M\u00fc\u015fteri Yorumlar\u0131<\/h2>\n
Ahn Byung-hoon, Hay Producer, Chungcheongnam-do<\/b> (2024 sonbahar\u0131)<\/span>
\n“We bale about 3,000 round bales per season across 40 hectares. Put this T-304A on our main baler last September after the original Comer unit developed a bearing noise. Direct bolt-in swap, ran the rest of the season \u2014 probably 200 hours \u2014 with zero issues. Oil came out clean at the winter service. Very satisfied with the purchase.”<\/div>\n
Cho Min-ji, Contract Baling Operator, Jeollanam-do<\/b> (2025 \u0130lkbahar\u0131)<\/span>
\n“I run 3 balers for contract work. The price difference between this and the European original paid for a whole season of diesel. Quality seems identical \u2014 same weight, same shaft, same torque feel. My mechanic checked the gears at the 400-hour mark and everything looked fine.”<\/div>\n
Seo Dong-woo, Rice Straw Baler, Gyeonggi-do<\/b> (winter 2024)<\/span>
\n“Rice straw baling is harder on the gearbox than grass hay. Heavier material, more dust. This T-304A has held up well through about 150 hours of straw work. The larger oil capacity helps with heat during long runs.”<\/div>\n
Im Yong-sik, Agricultural Equipment Dealer, Daejeon<\/b> (2025 ba\u015flar\u0131)<\/span>
\n“Stocking a few of these for baling season. They move fast in April and September. No customer complaints or returns. The pricing lets me offer a fair deal and still make margin.”<\/div>\n
Yang Hee-sun, Mixed Livestock Farm, Gangwon-do<\/b> (Yaz 2025)<\/span>
\n“Needed a gearbox for our second-hand baler. The original was missing and the dealer wanted too much for a new Comer unit. This Ever-Power replacement arrived in 3 days and fit perfectly. About 80 hours on it so far, works exactly as expected.”<\/div>\n

<\/p>\n

Paketleme ve Nakliye<\/h2>\n

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

The T-304A round baler PTO gearbox provides a 1:3 speed-increasing ratio with 94.5 daNm maximum output torque and 1.1 L oil capacity. Cast iron housing, 1 3\/8 inch 6-spline input, replacement for Comer T-304A. Designed for round baler, hay baler, and heavy-duty agricultural applications at 540 RPM. ISO-certified, 12-month warranty.<\/p>","protected":false},"featured_media":12002,"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-12000","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\/tr\/wp-json\/wp\/v2\/product\/12000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/comments?post=12000"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/media\/12002"}],"wp:attachment":[{"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/media?parent=12000"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/product_brand?post=12000"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/product_cat?post=12000"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pto-gearbox.xyz\/tr\/wp-json\/wp\/v2\/product_tag?post=12000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}