Flail Mower Gearboxes – Replacement of Comer Code T313J 1:3
The Flail Mower Gearbox T-313J, crafted by TEBSA in Argentina, is a heavy-duty powerhouse built for flail mowers tackling tough agricultural tasks. Since 1997, TEBSA has delivered reliable solutions with a 100% quality guarantee, and this gearbox is no exception. Made from premium materials like cast iron and alloy steel, it’s designed to endure the rugged demands of Argentina’s farmlands, from the Pampas plains to Córdoba’s fields. With a robust capacity, it handles diverse workloads while remaining easy to operate and maintain.
This gearbox features an input shaft linked to a power source like a tractor’s PTO, an output shaft driving the flail mower head, and precision gears that transfer power smoothly. High-quality bearings ensure the gears rotate without friction, boosting efficiency. Whether you’re clearing pastures, managing crop residue, or maintaining roadsides, the T-313J offers durability and performance at a 50% cost advantage over original brands.
Specifications of Flail Mower Gearbox T-313J (1:3)
Description | Flail Mower Gearboxes - Replacement of Comer Gearbox T-313J 1:3 |
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Application | Mowers |
Consists of |
|
Technical information |
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Contains oil | No |
Max. oil capacity | 1.5 l |
Oil SAE viscosity grade | 80W-90 |
Weight | 27 kg |
Gear arrangement Increasing | 21-22 |
Input power kW / HP Increasing | 45.6 / 62 kW/HP |
Input shaft Increasing | X |
Output Torque DaNm Increasing | 26.1 daNm |
Ratio Increasing | 1 : 3 |
Ratio Reducing | 3 : 1 |
Shaft X | 1.3/8 (A) |
Shaft Z | 33h7 (B) |
Why Choose the T-313J Flail Mower Gearbox?
The T-313J gearbox from TEBSA brings unmatched value to Argentine farmers and contractors. Here are its standout features:
Rugged Durability: Built with cast iron housing and alloy steel gears, it’s forged and heat-treated (via carburization) to withstand harsh conditions, like clearing soybean stubble or tackling tough weeds in Buenos Aires.
High Capacity: With a 45.6 kW (62 HP) input and 26.1 daNm torque, it powers through heavy workloads, from pasture maintenance to roadside mowing.
Versatile Ratios: The 1:3 increasing and 3:1 reducing ratios let you tweak performance for crops like wheat or corn, ensuring precision cutting.
Easy Maintenance: Designed for quick checks and oil changes (every 50-70 hours initially, then 500-700 hours), it keeps downtime low. Our team responds within 24 hours for support.
Cost Savings: Offering a 50% cost edge over Comer originals, it’s a smart investment for Argentina’s budget-conscious farmers.
Safe Operation: Smooth bearings and a solid build reduce vibrations, making fieldwork safer on uneven Pampas terrain.
Applications of the T-313J in Argentine Agriculture
The T-313J flail mower gearbox is a workhorse for Argentina’s diverse agricultural needs. It powers flail mowers that shred crop residue, clear pastures, or maintain farm roads. In regions like Córdoba, it’s ideal for prepping fields for soybean planting. In Santa Fe, it handles corn stubble with ease. Its 1.5-liter oil capacity and 80W-90 viscosity ensure it runs smoothly under the hot Argentine sun.
Beyond farms, it’s used for:
- Roadside maintenance in rural Buenos Aires.
- Clearing weeds in vineyards or orchards.
- Managing grass in livestock pastures.
The gearbox’s cast iron body resists dust and debris, while its 27 kg weight balances portability with sturdiness. For farmers buying flail mower gearboxes online, the T-313J is a reliable replacement for Comer T-313J models, delivering consistent power via PTO-driven systems.
Application | Use Case in Argentina |
Crop Residue Management | Shredding soybean or corn stubble in the Pampas |
Pasture Maintenance | Clearing grass for cattle grazing in Santa Fe |
Roadside Mowing | Keeping rural roads clear in Buenos Aires |
Maintenance and Installation Tips for the T-313J
To keep your T-313J flail mower gearbox running strong, follow these steps:
Initial Setup: Fill with 1.5 liters of 80W-90 oil before use, as it ships without oil.
Regular Checks: Inspect for leaks or wear every 50-70 hours. Change oil after this period, then every 500-700 hours or annually.
Lubrication: Use only TEBSA-approved 80W-90 oil to maintain gear and bearing performance.
Alignment: Ensure the input shaft (1.3/8) and output shaft (33h7) align with your mower to avoid strain.
Cleaning: Wipe the input shaft and re-grease to prevent corrosion, especially in humid Argentine climates.
Installation is straightforward. Connect the input shaft to your tractor’s PTO and the output to the flail mower head. TEBSA’s ISO9001-2015 certification ensures every unit meets strict standards, but contact our team for guidance on matching RPM or troubleshooting.
About TEBSA and Our Agricultural Solutions
Since 1997, TEBSA has been Argentina’s trusted name in agricultural gearboxes, offering a 50% cost advantage and a 100% quality guarantee. Based in Argentina, we combine advanced manufacturing—forging, casting, and heat treatments like carbonitriding—with a team that responds within 24 hours. Our ISO9001-2015 certification reflects our commitment to excellence, making us a go-to supplier for farmers in Buenos Aires, Córdoba, and beyond.
In addition to the T-313J flail mower gearbox, we produce:
- Rotary Cutter Gearboxes: Like the RC-61, perfect for heavy-duty mowing.
- Fertilizer Spreader Gearboxes: For precise nutrient distribution in soybean fields.
- Post Hole Digger Gearboxes: Ideal for fencing on Pampas ranches.
- Rotary Tiller Gearboxes: For soil prep in wheat or corn planting.
- PTO Shafts: Durable power transfer for various farm tools.
Whether you’re managing crops or livestock, TEBSA’s solutions are built to last. Visit our site to buy flail mower gearboxes online or contact us for custom orders tailored to Argentina’s unique farming needs.
About us

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A large portion of our products is exported to Europe and the Americas, with both standard and custom options available. We can manufacture according to your drawings or samples, using standard materials or as per your specific requirements. Choosing us means choosing reliability.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request

Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly

QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port

Industries We Service
