The Agricultural Sprayer Gearbox D21A, engineered by TEBSA in Argentina, is the backbone of sprayer systems that deliver fertilizers, pesticides, and herbicides evenly across crops. Built to endure the tough conditions of Argentina’s farmlands—like the Pampas plains or Córdoba’s fields—this gearbox combines durability with high performance. Since 1997, TEBSA has crafted reliable agricultural solutions, and the D21A stands out with a 100% quality guarantee, offering farmers a cost-effective option at 50% less than competing brands.

Mounted to a tractor’s power take-off (PTO) shaft, the D21A uses precision gears and bearings to slow down rotational speed, ensuring the sprayer pump hits the right flow rate. This precision translates to uniform chemical application, boosting crop yields for staples like soybeans and wheat while cutting waste and environmental impact. Whether you’re tending vineyards in Mendoza or grain fields in Buenos Aires, the D21A’s rugged build—made with alloy steel and advanced forging—handles moisture, chemicals, and temperature swings with ease.

Why Choose the D21A for Agricultural Spraying?

The D21A isn’t just another gearbox—it’s a game-changer for farmers and agribusinesses aiming for efficiency and precision. Designed specifically for agricultural sprayers, it tackles the demands of heavy-duty crop protection with features that set it apart:

Tough Materials: Crafted from high-grade alloy steel and stainless steel components, it resists corrosion from pesticides and fertilizers, a must for Argentina’s humid growing seasons.
Precision Engineering: Advanced machining processes, like teeth hobbing and carburization, ensure smooth power transfer, reducing wear and extending service life.
Flexible Ratios: With gear ratios like 3.60, 4.50, and up to 7.45, it adapts to various sprayer pumps, letting you dial in the perfect spray for herbicides or liquid fertilizers.
Local Fit: Tailored for Argentina’s agriculture, it’s ideal for crops like corn, soybeans, and sunflowers, supporting farmers from Santa Fe to La Pampa.

This gearbox powers sprayers that apply chemicals evenly, helping you protect crops without overusing costly inputs. Its compact design keeps weight down (starting at just 25 kg for some configurations), making it a practical choice for tractors of all sizes.

Applications Across Argentine Agriculture

The D21A shines in a range of spraying tasks, from small farms to large estates. Here are key uses:

Broadacre Crops: Perfect for spraying pesticides on wheat, soybeans, and corn in Argentina’s grain belt, ensuring even coverage to maximize yields.
Orchards and Vineyards: In regions like Mendoza, it powers sprayers for precise fungicide application on grapes and fruit trees.
Pasture Management: Keeps weeds in check on grazing lands, supporting Argentina’s beef and dairy industries.
Specialty Crops: Handles delicate herbicide applications for sunflowers or vegetables, reducing drift and runoff.

Farmers searching for “reliable agricultural sprayer gearbox in Argentina” or “D21A gearbox for PTO sprayers” will find this model delivers consistent results, backed by TEBSA’s 24-hour engineering support.

Technical Specifications of the D21A Gearbox

The D21A comes in single and double output variants, offering flexibility for different sprayer setups. Below are the detailed specs to help you choose the right model.

D21A Single Output

Ratio (i)	Input Speed (N1 [rpm])	Power (P1 [kW])	Torque (M2 [Nm])	Shaft Type		Input
				X	Z
6.95 / 7.45	540	26.5	-	1'' 3/8 Z6	L108 35	X
3.90 / 4.90	540	40.5	-	1'' 3/8 Z6	L271.5 30	X
3.60 / 4.50	540	40.5	-	1'' 3/8 Z6	L273 40	X
3.60 / 4.50	540	40.5	-	1'' 3/8 Z6	L270 35	X
3.60 / 4.50	540	47.8	-	1'' 3/8 Z6	L100 35	X

D21A Double Output

Ratio (i)	Input Speed (N1 [rpm])	Power (P1 [kW])	Torque (M2 [Nm])	Shaft Type		Input
				X	Z
3.60 / 4.93	540	40.5	-	1'' 3/8 Z6	L360 35 Φ30	X

Additional Technical Features

These specs make the D21A a versatile choice for sprayers ranging from 500 to 2,000 liters, covering everything from small plots to sprawling estates.

Benefits and Maintenance for Long-Term Performance

Investing in the D21A gearbox means banking on reliability and savings. Here’s what you get and how to keep it running smoothly:

Key Benefits

Uniform Application: Delivers steady pump speeds for even spraying, cutting chemical waste—vital for Argentina’s eco-conscious farmers.
Rugged Build: Alloy steel gears and a sealed housing shrug off rain, dust, and chemicals, perfect for humid summers in Entre Ríos.
Cost Savings: At 50% less than other brands, it’s a budget-friendly upgrade that doesn’t skimp on quality.
Adaptable Design: Single or double output options suit various sprayer brands, from local Argentine models to global names.
Safe Operation: Smooth power transfer reduces strain on your tractor, keeping work safe in busy seasons.
Easy Fixes: Replaceable seals and bearings, plus TEBSA’s 24-hour support, mean downtime stays short.

Buyers searching “buy agricultural sprayer gearbox online Argentina” or “D21A PTO gearbox for sprayers” will see the D21A’s value in both performance and price.

Maintenance Tips

To get the most out of your D21A, follow these steps:

Check Oil Regularly: Use high-viscosity gear oil (1.2 L capacity) and swap it every 500 hours or annually.
Inspect Seals: Look for leaks around the PTO shaft every month, especially after heavy use in wet fields.
Clean After Use: Rinse off chemical residue to protect the housing, a must for pesticide-heavy jobs.
Align Properly: Ensure the PTO shaft is straight to avoid gear wear, checking alignment during setup.
Store Smart: Keep it covered in dry storage during Argentina’s rainy off-season to prevent rust.

With care, this gearbox can last over 5,000 hours, supporting years of harvests.

Why It Matters in Argentina

In Argentina, where agriculture drives the economy, the D21A helps farmers stay competitive. It’s built for the realities of local farming—think muddy fields in Santa Fe or dusty plains in La Pampa. By ensuring precise chemical application, it supports sustainable practices that protect soil and water, aligning with regulations in Buenos Aires province and beyond.

About TEBSA and Our Agricultural Solutions

Since 1997, TEBSA has been Argentina’s go-to name for agricultural gearboxes, proudly based in the heart of the country’s farming region. We’re more than a manufacturer—we’re a partner to farmers, offering a 100% quality guarantee and prices up to 50% lower than competitors. Our ISO9001-2015 certification reflects our commitment to excellence, while our engineering team responds to inquiries within 24 hours, ensuring you’re never stuck.

The D21A is just one piece of our lineup. We also supply:

Rotary Cutter Gearboxes: Like the RC-61, ideal for mowing pastures or clearing land.
Fertilizer Spreader Gearboxes: For precise nutrient distribution on corn or wheat fields.
Post Hole Digger Gearboxes: Built for fencing and planting in tough Argentine soils.
PTO Shafts: Durable connectors for sprayers, mowers, and more.

Whether you’re in Mendoza, Córdoba, or Buenos Aires, TEBSA’s products are designed with Argentina’s crops and conditions in mind. Need a custom gearbox? Our team can prototype fast, from alloy steel to POM plastic, tailored to your specs.

Ready to boost your sprayer’s performance? Contact TEBSA today for the D21A or explore our full range at agricultural-gear-boxes.com.