Flail Mower Gearbox – Replacement of Comer Code L25J 1:1.9
The Flail Mower Gearbox L-25J, crafted by TEBSA in Argentina, is a robust and compact solution designed for flail mowers used in demanding agricultural and landscaping tasks. Since 1997, TEBSA has been a trusted manufacturer, delivering 100% quality-guaranteed products at 50% cost savings compared to original brands. The L-25J is built to handle up to 90 horsepower and operate at 540 RPM, making it a reliable choice for Argentina’s diverse farmlands, from the Pampas to the fields of Córdoba.
This gearbox features a durable aluminum housing and precision-machined gears, engineered to withstand the intense stresses of flail mowing. Whether you’re clearing pastures, maintaining orchards, or managing roadside vegetation, the L-25J ensures efficient power transfer from the tractor’s PTO shaft to the mower blades. Its versatility suits both small garden tractors and larger agricultural machinery, making it a go-to for farmers and landscapers in Argentina and beyond.
Overview and Applications of the Flail Mower Gearbox L-25J
The L-25J flail mower gearbox is purpose-built for flail mowers, which are essential for cutting grass, weeds, and small brush in agricultural and landscaping settings. In Argentina, where crops like soybean and wheat dominate the Pampas plains, farmers rely on flail mowers for pasture maintenance and crop residue management. The L-25J’s compact design and high torque output make it ideal for these tasks, ensuring clean cuts and efficient operation.
This gearbox supports a range of applications, from small-scale gardening to large-scale farming. It powers flail mowers on garden tractors for residential lawn care, as well as heavy-duty equipment for clearing fields or maintaining public spaces. Beyond agriculture, the L-25J is used in chemical fertilizer spreaders and band saws, showcasing its versatility. Its ability to handle up to 90 HP and 540 RPM ensures it meets the demands of Argentina’s varied agricultural landscape, from Buenos Aires to Mendoza.
The L-25J connects seamlessly with PTO shafts, transferring power from tractors to mower blades with minimal energy loss. This makes it a top choice for farmers seeking a reliable flail mower gearbox in Argentina. Its compatibility with various flail mower models, combined with TEBSA’s 50% cost advantage, positions it as a cost-effective replacement for Comer Code L-25J gearboxes, delivering the same performance at a lower price.
Key Applications
- Pasture and crop residue management for soybean and wheat fields in Argentina.
- Roadside vegetation control and orchard maintenance.
- Lawn care for parks, golf courses, and residential properties.
- Industrial tasks like chemical fertilizer spreading and band saw operations.
Technical Features and Benefits of the L-25J Gearbox
The L-25J stands out for its engineering and durability, tailored to meet the needs of Argentine farmers and landscapers. Its aluminum housing is lightweight yet tough, resisting corrosion in humid conditions like those found in Argentina’s coastal regions. Precision-machined gears, crafted through advanced forging and grinding processes, ensure smooth operation and long-term reliability under high stress.
With a gear ratio of 1:1.9 (increasing) and 1.9:1 (reducing), the L-25J optimizes power delivery for different mowing conditions. It handles a maximum output torque of 22.7 daNm, making it suitable for tough tasks like clearing thick brush. The gearbox supports input power of 11 kW/15 HP (increasing) and 7 kW/9.5 HP (reducing), offering flexibility for various tractor sizes.
TEBSA’s L-25J is designed for easy integration with standard PTO shafts, featuring a 1 3/8" (6) shaft (X) and a 22 (D) shaft (Z). Its compact size reduces strain on equipment, while the aluminum construction keeps the weight at just 4.1 kg, improving fuel efficiency. The gearbox uses 80W-90 oil, with a capacity of 0.35 liters, and requires oil changes after 50-70 hours initially, then every 500-700 hours or annually.
Benefits of the L-25J
Feature | Benefit |
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Aluminum Housing | Lightweight and corrosion-resistant, perfect for Argentina’s humid climates. |
Precision Gears | Smooth power transfer, reducing wear and extending lifespan. |
90 HP Capacity | Handles heavy-duty tasks like clearing brush or managing large fields. |
Compact Design | Reduces equipment strain and boosts fuel efficiency. |
Cost Savings | 50% cheaper than original brands, backed by TEBSA’s quality guarantee. |
The L-25J’s design reflects TEBSA’s expertise in mechanical engineering, honed since 1997. Its 100% quality guarantee ensures every unit meets ISO9001-2015 standards, while the 24-hour response team provides quick support for Argentine customers. This gearbox is a smart investment for those seeking a reliable flail mower gearbox for sale online.
Maintenance and Compatibility of the L-25J Gearbox
Proper maintenance is key to maximizing the L-25J’s lifespan. The gearbox is shipped without oil, so users must add 80W-90 oil before use. After 50-70 hours of operation, change the oil, then repeat every 500-700 hours or once a year. Regular checks for leaks, wear, or debris in the oil keep the gearbox running smoothly. TEBSA recommends using high-quality lubricants to maintain performance.
The L-25J’s compatibility with a wide range of flail mowers makes it a versatile choice. It fits small garden tractors for residential use and larger agricultural machines for commercial farms. The gearbox’s input shaft (X) and output shaft (Z) are designed for standard PTO connections, ensuring easy installation. For non-standard RPM requirements, TEBSA’s engineering team can provide tailored advice within 24 hours.
Maintenance Tips
- Check oil levels before each season, especially during Argentina’s busy harvest periods.
- Inspect gears and housing for wear after heavy use in dusty Pampas fields.
- Clean the input shaft and apply grease to prevent friction damage.
- Ensure proper alignment with the PTO shaft to avoid vibration or gear damage.
For Argentine farmers, the L-25J’s durability and low maintenance needs make it a practical choice for year-round use. Its ability to handle tough conditions, like clearing soybean stubble or maintaining wheat fields, ensures consistent performance. Online buyers searching for “flail mower gearbox in Argentina” will find TEBSA’s L-25J a cost-effective, high-quality option.
Specifications of Flail Mower Gearbox L-25J (1:1.9)
Description | Flail Mower Gearbox - Replacement of Comer Gearbox L-25J 1:1.9 |
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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 | 22.7 daNm |
Contains oil | No |
Max. oil capacity | 0.35 l |
Max. oil change interval | 500 h |
Oil SAE viscosity grade | 80W-90 |
Housing material | Aluminium |
Weight | 4.1 kg |
Gear arrangement Reducing | 1 - 2 |
Input power kW / HP Increasing | 11 / 15 kW/HP |
Input shaft Increasing | X |
Input shaft Reducing | Z |
Input power KW / HP Reducing | 7 / 9.5 kW/HP |
Output Torque DaNm Increasing | 9.9 daNm |
Ratio Increasing | 1: 1.9 |
Ratio Reducing | 1.9: 1 |
Shaft X | 1 3/8" (6) (A) |
Shaft Z | 22 (D) |
About TEBSA and Our Agricultural Solutions
Since 1997, TEBSA has been a leading manufacturer of agricultural gearboxes in Argentina, serving farmers and industrial clients with reliable, cost-effective solutions. Based in Argentina, we specialize in precision-engineered products that meet ISO9001-2015 standards, backed by a 100% quality guarantee. Our 50% cost advantage over original brands, combined with a responsive engineering team that answers within 24 hours, makes us a trusted partner for agricultural needs.
In addition to the L-25J 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, corn header gearboxes, fertilizer mixer gearboxes, feed mixer gearboxes, round baler gearboxes, irrigation reel gearboxes, manure spreader gearboxes, rotary rake gearboxes, and gearboxes for hay tedders. We also provide PTO shafts for various farm applications. Contact us to explore our full catalog and find the perfect solution for your equipment.
Why Choose TEBSA?
- Experience: Over 25 years of manufacturing expertise since 1997.
- Quality: 100% quality guarantee with ISO9001-2015 certification.
- Cost Savings: 50% cheaper than original brands without compromising performance.
- Support: 24-hour response from our skilled engineering team.
- Local Expertise: Tailored solutions for Argentina’s agricultural challenges.
About us

We guarantee top-quality products at the best prices in China! Special orders are welcome, and if you’re interested in any of our products, feel free to reach out for more detailed information. We ensure our products are safe, high-quality, and reasonably priced. Please contact us as soon as possible if you’d like to learn more. We’re eager to cooperate with you!
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
