{"id":3372,"date":"2025-11-14T03:44:39","date_gmt":"2025-11-14T03:44:39","guid":{"rendered":"https:\/\/gearboxagricultural.com\/product\/flail-mower-gearboxes-replacement-of-comer-code-t313j-13\/"},"modified":"2025-11-14T08:31:21","modified_gmt":"2025-11-14T08:31:21","slug":"flail-mower-gearboxes-replacement-of-comer-code-t313j-13","status":"publish","type":"product","link":"https:\/\/gearboxagricultural.com\/pt\/produto\/flail-mower-gearboxes-replacement-of-comer-code-t313j-13\/","title":{"rendered":"Flail Mower Gearboxes – Replacement of Comer Code T313J 1:3"},"content":{"rendered":"

Product Overview<\/h2>\n
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Recurso<\/th>\nDetalhes<\/th>\nRecurso<\/th>\nDetalhes<\/th>\n<\/tr>\n<\/thead>\n
Descri\u00e7\u00e3o<\/td>\nFlail Mower Gearboxes – Replacement of Comer Gearbox T-313J 1:3<\/td>\n<\/tr>\n
Aplicativo<\/td>\nMowers<\/td>\nConsists of<\/td>\n\n
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  • Caixa de velocidades<\/li>\n
  • Order oil separately<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
Technical information<\/td>\n\n
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  • Housing material: cast iron<\/li>\n
  • Contact us for power at a different RPM<\/li>\n
  • The gearbox is delivered without oil and must be filled before first use.<\/li>\n
  • First, the oil change after 50-70 operating hours, then after 500-700 operating hours or at least once a year.<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
Contains oil<\/td>\nNo<\/td>\n<\/tr>\n
Max. oil capacity<\/td>\n1.5 l<\/td>\nOil SAE viscosity grade<\/td>\n80W-90<\/td>\n<\/tr>\n
Peso<\/td>\n27 kg<\/td>\nGear arrangement Increasing<\/td>\n21-22<\/td>\n<\/tr>\n
Input power kW \/ HP Increasing<\/td>\n45.6 \/ 62 kW\/HP<\/td>\nInput shaft Increasing<\/td>\nX<\/td>\n<\/tr>\n
Output Torque DaNm Increasing<\/td>\n26.1 daNm<\/td>\nRatio Increasing<\/td>\n1 : 3<\/td>\n<\/tr>\n
Ratio Reducing<\/td>\n3: 1<\/td>\nShaft X<\/td>\n1.3\/8 (A)<\/td>\n<\/tr>\n
Shaft Z<\/td>\n33h7 (B)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Flail Mower Gearboxes Overview<\/span><\/p>\n

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The T-313J flail mower gearbox is a heavy-duty, direct replacement for the Comer T-313J. Built with a robust cast-iron housing and precision-cut gears, it\u2019s made to handle tough daily work \u2014 whether you\u2019re maintaining roadsides, orchards, pastures, or clearing heavy cover crops.<\/p>\n

At standard 540 rpm PTO speed, it reliably transfers up to 45.6 kW (62 hp) with an output torque of 26.1 daNm. The 1:3 ratio steps the rotor speed up to around 1,620 rpm, which is the sweet spot for most Y-blades and hammer flails \u2014 giving you clean cuts and even residue without bogging down the tractor. It\u2019s proven itself on side-mount and rear-mount mowers up to about 2.5 meters wide.<\/p>\n

Connection is straightforward: the input shaft is the common 1-3\/8″ 6-spline (Z6) that fits virtually every modern tractor PTO, while the output shaft is a 33 mm keyed design (33h7) that makes rotor installation quick and secure. Total weight is roughly 27 kg \u2014 solid, but still manageable for one person during mounting.<\/p>\n

Maintenance is simple. The gearbox ships dry, so just add 1.5 liters of 80W-90 gear oil before first use. Change the oil after the initial 50\u201370 hours, then every 500\u2013700 hours or once a year after that. Customers regularly report five to six seasons of hard use with nothing more than fresh oil and the occasional seal replacement.<\/p>\n

If you\u2019re looking for a dependable, high-value flail mower gearbox that drops in place of the original Comer unit and still has power to spare, the T-313J is a proven choice that many dealers and end-users overseas have already switched to with excellent results.<\/p>\n<\/div>\n

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\"Replacement<\/p>\n

Specifications of Flail Mower Gearbox T-313J (1:3)<\/h2>\n

\"Flail \"Flail<\/p>\n

Key Features of the T-313J Flail Mower Gearbox (1:3 Ratio)<\/h2>\n

The T-313J stands out as a solid, no-nonsense replacement for the Comer T-313J, and users quickly notice a few things that set it apart in real-world use:<\/p>\n

True drop-in versatility<\/strong> \u2013 Same mounting dimensions and shaft positions as the original Comer unit, so it fits most European-brand flail mowers (Maschio, Kuhn, Perfect, Votex, Orsi, etc.) without any adapter plates or modifications. Many dealers keep it in stock simply because one box covers a wide range of 50\u201370 hp machines.<\/p>\n

Real efficiency where it matters<\/strong> \u2013 The 1:3 speed-up ratio and precisely machined helical gears keep power loss low. At 540 rpm PTO input you get around 1,620 rpm on the rotor with minimal heat build-up, even during long summer days on heavy grass or brush.<\/p>\n

Maintenance that doesn\u2019t waste your time<\/strong> \u2013 Large fill\/drain plugs and a dipstick make oil checks and changes fast. Add 1.5 L of 80W-90, run the first 50\u201370 hours, change it once, and then just once a year after that. Most owners say that\u2019s all they ever do besides greasing the occasional universal joint.<\/p>\n

Built to last<\/strong> \u2013 Cast-iron housing, forged input\/output shafts, and tapered roller bearings throughout. It\u2019s the same heavy construction you expect from European gearboxes, but at a price that makes sense when you\u2019re replacing a worn-out unit.<\/p>\n

Quieter than most<\/strong> \u2013 The helical gear design and tight tolerances keep noise and vibration noticeably lower than older straight-cut boxes, especially helpful on roadside jobs where you\u2019re running for hours at a time.<\/p>\n

Practical safety<\/strong> \u2013 Standard shear-bolt hub on the input side protects both tractor and gearbox if you hit something solid. Replacing a 12 mm grade-8 bolt takes two minutes and costs pennies \u2013 far cheaper than rebuilding a driveline.<\/p>\n

Bottom line: the T-313J is a straightforward, heavy-duty flail mower gearbox that delivers exactly what experienced operators and service shops look for \u2013 reliability, easy service, and perfect compatibility with existing equipment.<\/p>\n

Common Applications for the Flail Mower Gearbox<\/h2>\n

You\u2019ll find this style of gearbox on almost any serious flail mower or shredder used for:<\/p>\n