Flail Mower Gearboxes – Replacement of Comer Code T-281A 1:2.91
The Flail Mower Gearbox T-281A, crafted by TEBSA in Argentina, is a robust mechanical component designed to power flail mowers in demanding agricultural and industrial settings. Since 1997, TEBSA has been a trusted manufacturer, delivering high-quality agricultural gearboxes with a 100% quality guarantee. This gearbox channels power from a tractor’s PTO (power take-off) to the mower’s blades, tackling tough vegetation and uneven terrain with ease. Built for Argentina’s diverse landscapes, from the Pampas plains to the fields of Córdoba, it’s a reliable choice for farmers and contractors.
Constructed with high-strength steel and precision-engineered gears, the T-281A is made to endure heavy-duty mowing. Its aluminum housing provides durability without excess weight, while an oil bath lubrication system ensures smooth, consistent performance. With a 1:2.91 gear ratio, it delivers high torque at slower blade speeds, ideal for cutting thick grass, shrubs, or crop residue like soybean stubble. A shear pin system adds safety, allowing quick replacement if the mower hits an obstacle, minimizing downtime in busy harvest seasons.
The T-281A is versatile, supporting applications beyond mowing, such as multi-row rotary tillers and band saws. Its compact design and 50% cost advantage over original brands make it a smart investment for Argentine farmers and global buyers seeking a flail mower gearbox replacement. Whether you’re maintaining pastures or clearing industrial sites, TEBSA’s T-281A delivers unmatched reliability.
Specifications of Flail Mower Gearbox T-281A (1:2.91)
Product Description | Flail Mower Gearboxes - Replacement of Comer Gearbox T-281A 1:2.91 |
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Product details |
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Application range |
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Consists of |
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Max. output torque | 20 daNm |
Contains oil | No |
Max. oil capacity | 0.5 l |
Max. oil change interval | 500 h |
Oil SAE viscosity grade | 80W-90 |
Housing material | Aluminium |
Weight | 7.2 kg |
Gear arrangement Increasing | 25 - 26 - 27 - 28 |
Gear arrangement Reducing | 5 - 6 |
Input power kW / HP Increasing | 8.1 / 11 kW/HP |
Input shaft Increasing | X - Y |
Input shaft Reducing | Z |
Input power KW / HP Reducing | 4 / 5 kW/HP |
Output Torque DaNm Increasing | 4.8 daNm |
Ratio Increasing | 1: 2.91 |
Ratio Reducing | 2.91: 1 |
Shaft X | 1 3/8" (6) (A) |
Shaft Y | 1 3/8" (6) (A) |
Shaft Z | 1 3/8" (6) (E) |
Key Features and Benefits of the T-281A Flail Mower Gearbox
The T-281A flail mower gearbox from TEBSA offers a range of advantages tailored for Argentina’s agricultural and industrial needs. Here’s why it’s a top choice:
High Torque Output: With a 1:2.91 gear ratio, the T-281A delivers 20 daNm of torque, powering through dense vegetation like wheat stubble or overgrown pastures in Buenos Aires or Rosario.
Durable Construction: Forged high-strength steel gears and an aluminum housing ensure it withstands Argentina’s rugged fields, from muddy lowlands to rocky terrains.
Safety First: The shear pin system protects the gearbox and mower by breaking under sudden impacts, such as hitting rocks, making repairs quick and safe.
Smooth Operation: An oil bath lubrication system keeps gears running efficiently, reducing wear during long hours of soybean or corn residue management.
Cost Savings: TEBSA’s 50% cost advantage over original Comer gearboxes means you get premium performance without the premium price.
Easy Maintenance: Designed for simplicity, it requires an oil change after 50-70 hours initially, then every 500-700 hours, with our team ready to assist within 24 hours.
Feature | Details |
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Material | High-Strength Steel Gears, Aluminum Housing |
Gear Ratio | 1:2.91 (Increasing), 2.91:1 (Reducing) |
Torque | 20 daNm (Max), 4.8 daNm (Increasing) |
Lubrication | Oil Bath, 0.5L Capacity, 80W-90 Oil |
Safety | Shear Pin System |
Weight | 7.2 kg |
Applications of the T-281A in Argentine Agriculture and Beyond
The T-281A flail mower gearbox is a versatile powerhouse, supporting a variety of tasks in Argentina’s agricultural heartlands and industrial sectors. Its primary use is in flail mowers, where it drives blades to shred crop residue, trim pastures, or clear roadside vegetation. In Argentina, where soybean and corn dominate, the T-281A excels at processing stubble to prepare fields for the next planting season. Its high torque handles thick, fibrous plants, making it ideal for wheat or alfalfa fields in Mendoza or Santa Fe.
Beyond mowing, the T-281A supports multi-row rotary tillers, breaking up compacted soil for better seedbed preparation. It’s also used in band saws for industrial cutting, showcasing its adaptability. The gearbox’s compact 7.2 kg design fits smaller tractors common in Argentina, while its 11 HP input capacity suits medium-duty equipment.
For local farmers, the T-281A is a reliable partner in sustainable farming. It helps maintain soil health by mulching crop residue, reducing erosion in the windy Pampas. Industrial users, like those clearing construction sites or maintaining public spaces, value its durability and low maintenance. Online buyers searching for “flail mower gearbox for sale in Argentina” or “Comer T-281A replacement” will find TEBSA’s solution cost-effective and dependable.
Application | Use Case | Benefit |
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Flail Mowing | Shredding soybean stubble in Córdoba | High torque for tough vegetation |
Rotary Tilling | Preparing wheat fields in Buenos Aires | Breaks up hard soil efficiently |
Industrial Cutting | Clearing roadside weeds in Rosario | Lightweight yet durable design |
Maintenance and Installation Tips for the T-281A Gearbox
To keep the T-281A performing at its best, TEBSA recommends a straightforward maintenance routine, ensuring long-term reliability in Argentina’s demanding conditions. The gearbox arrives without oil, so fill it with 0.5 liters of 80W-90 oil before use. Change the oil after 50-70 hours of initial operation, then every 500-700 hours or annually. Regular checks for leaks or wear can catch issues early, especially after heavy use in muddy or dusty fields.
The shear pin system is a key feature, designed to break under excessive load to protect the gearbox and mower. Keep spare pins on hand for quick replacements during fieldwork. Ensure the PTO shaft and gearbox are properly aligned to avoid vibration or gear damage. For installation, confirm the input shaft (X, Y, or Z) matches your tractor’s PTO, typically 1 3/8" with 6 splines, common in Argentine equipment.
TEBSA’s engineering team, with over 25 years of experience, offers support within 24 hours for any questions about installation or maintenance. For buyers seeking “reliable flail mower gearbox in Argentina” or “T-281A maintenance tips,” our commitment to quality and service sets us apart.
About TEBSA and Our Agricultural Solutions
Since 1997, TEBSA, based in Argentina, has been a leading manufacturer of agricultural gearboxes, serving farmers and industrial clients with innovative, cost-effective solutions. Certified under ISO9001-2015, we guarantee 100% quality for every order, backed by a skilled engineering team that responds within 24 hours. Our 50% cost advantage over original brands, combined with advanced manufacturing techniques like forging, carburization, and precision grinding, makes us a trusted partner in Argentina and beyond.
In addition to the T-281A flail mower gearbox, TEBSA offers a wide range of agricultural gearboxes, including rotary cutter gearboxes, fertilizer spreader gearboxes, lawn mower gearboxes, post hole digger gearboxes, rotary tiller gearboxes, and more. We also provide PTO shafts, sprockets, chains, and couplings, all designed for durability and performance in tasks like soybean harvesting or pasture management. Whether you’re in Buenos Aires, Mendoza, or searching online for “agricultural gearbox supplier in Argentina,” TEBSA delivers reliable solutions tailored to your needs. Contact us today to explore our full product line!
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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
