{"id":1219,"date":"2026-02-02T05:53:01","date_gmt":"2026-02-02T05:53:01","guid":{"rendered":"https:\/\/agricultural-gearbox.net\/?p=1219"},"modified":"2026-02-06T06:24:33","modified_gmt":"2026-02-06T06:24:33","slug":"application-of-agricultural-gearboxes-in-tea-harvesters","status":"publish","type":"post","link":"https:\/\/agricultural-gearbox.net\/pt\/application\/application-of-agricultural-gearboxes-in-tea-harvesters\/","title":{"rendered":"Application of agricultural gearboxes in tea harvesters used in harvesting machinery for fruits, vegetables and so on"},"content":{"rendered":"
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1. Technical Specifications: Engineering Data for Tea Harvester Integration<\/h2>\n

Selecting the right pto gearbox or speed reducer requires a deep dive into technical parameters. Below is a comprehensive data sheet representing our standard tea harvester gearbox series, optimized for the high-humidity and high-temperature conditions typical of Brazilian tea-growing regions.<\/p>\n

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Parameter<\/th>\nSpecifications \/ Value<\/th>\nNotas de Engenharia<\/th>\n<\/tr>\n<\/thead>\n
Torque Capacity (Nm)<\/td>\n180 Nm – 450 Nm<\/td>\nPeak torque handled during dense canopy cutting.<\/td>\n<\/tr>\n
Faixa de Rela\u00e7\u00e3o de Engrenagem<\/td>\n1:1, 1:1.5, 1:1.85<\/td>\nCustomizable for specific blade frequencies.<\/td>\n<\/tr>\n
Input Shaft Type<\/td>\n1 3\/8″ Z6 Spline \/ Keyed Shaft<\/td>\nCompatible with standard eixo do pto<\/a> interfaces.<\/td>\n<\/tr>\n
Output Shaft Material<\/td>\n40CrNiMo (Hardened & Tempered)<\/td>\nAlta resist\u00eancia \u00e0 fadiga para cargas oscilantes.<\/td>\n<\/tr>\n
Material de Constru\u00e7\u00e3o<\/td>\nDie-cast Aluminum ADC12 \/ Ductile Iron QT450<\/td>\nWeight-to-strength optimization.<\/td>\n<\/tr>\n
Sistema de Lubrifica\u00e7\u00e3o<\/td>\nSynthetic Gear Oil (ISO VG 220) \/ Lithium Grease<\/td>\nSealed-for-life options available.<\/td>\n<\/tr>\n
Protection Rating<\/td>\nIP67 \/ IP69K (Optional)<\/td>\nResistance to high-pressure washing and tropical dust.<\/td>\n<\/tr>\n
Temperatura operacional<\/td>\n-20\u00b0C to +95\u00b0C<\/td>\nStable viscosity under Brazilian summer peaks.<\/td>\n<\/tr>\n
Tipo de Engrenagem<\/td>\nSpiral Bevel \/ Helical Gears<\/td>\nLapped teeth for noise reduction (<75dB).<\/td>\n<\/tr>\n
Backlash (Arcmin)<\/td>\n8 – 12 arcmin<\/td>\nPrecise synchronization for cutting blades.<\/td>\n<\/tr>\n
Dynamic Load Rating<\/td>\n12.5 kN<\/td>\nCapacity to absorb impact from hidden branches.<\/td>\n<\/tr>\n
Fatigue Life (L10h)<\/td>\n5.000 \u2013 8.000 Horas<\/td>\nBased on standard harvesting cycles.<\/td>\n<\/tr>\n
Seal Construction<\/td>\nDouble-Lip Viton Seals<\/td>\nChemically resistant to agricultural sprays.<\/td>\n<\/tr>\n
Input RPM<\/td>\n540 \/ 1000 RPM<\/td>\nStandard tractor PTO speeds.<\/td>\n<\/tr>\n
Efficiency (%)<\/td>\n96% – 98%<\/td>\nMinimal power loss during transmission.<\/td>\n<\/tr>\n
Limiar de Vibra\u00e7\u00e3o<\/td>\n< 2.5 mm\/s<\/td>\nISO 10816 compliant for mechanical health.<\/td>\n<\/tr>\n
Revestimento de pintura<\/td>\nEpoxy Powder Coat (Anti-Corrosive)<\/td>\nSalt-spray tested for 500 hours.<\/td>\n<\/tr>\n
Internal Bearing Type<\/td>\nTapered Roller Bearings (Timken\/SKF)<\/td>\nHigh axial and radial load management.<\/td>\n<\/tr>\n
Configura\u00e7\u00e3o de Montagem<\/td>\nVertical \/ Horizontal \/ Universal<\/td>\nFlexible integration for various harvester frames.<\/td>\n<\/tr>\n
Safety Standard<\/td>\nCE Machinery Directive \/ NR-12<\/td>\nFull compliance for Brazilian safety audits.<\/td>\n<\/tr>\n
Classifica\u00e7\u00e3o T\u00e9rmica<\/td>\n4.5 kW<\/td>\nHeat dissipation capacity without external cooling.<\/td>\n<\/tr>\n
Resist\u00eancia ao Impacto<\/td>\nIK08<\/td>\nProtection against physical debris impact.<\/td>\n<\/tr>\n
Output Shaft Hardness<\/td>\nHRC 58-62<\/td>\nAtemprado por indu\u00e7\u00e3o para resist\u00eancia ao desgaste.<\/td>\n<\/tr>\n
Pressure Vent<\/td>\nAutomatic Breather Valve<\/td>\nPrevents seal blow-out during thermal expansion.<\/td>\n<\/tr>\n
Weight (kg)<\/td>\n8.5 kg – 22 kg<\/td>\nOptimized for handheld or tractor-mounted units.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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\"Agrinulear<\/div>\n

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2. Engineering Excellence in Tea Harvesting: The Role of the Agricultural Gearbox<\/h2>\n

In the vast tea plantations of Minas Gerais and S\u00e3o Paulo, the transition from manual plucking to mechanized harvesting has necessitated a revolution in drivetrain components. At the heart of every modern tea harvester lies the agricultural gearbox, a critical component that dictates the efficiency of the cutting system and the synchronization of the collection mechanism. As the exclusive agency for ever-power in Brazil, Agrinulear Nucleo Agro provides gearboxes engineered to convert the high-speed input from hydraulic motors or PTO shafts into the precise, high-torque output required for clean, uniform tea leaf cutting.<\/p>\n

The core advantage of our agricultural gear reducer lies in its specialized torque density. Tea harvesting requires a unique balance: the gearbox must be lightweight enough to avoid compacting the soil around the delicate tea bushes, yet robust enough to withstand the high-frequency vibrations of the oscillating blades. Our designs feature optimized spiral bevel gears that ensure smooth power transmission, reducing the “jerking” motion that often leads to leaf bruising or stem damage. By integrating EverPower’s global manufacturing standards with our local Brazilian field expertise, we offer a product that significantly extends the operational life of the machinery while minimizing energy consumption.<\/p>\n

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3. Anatomy of a Tea Harvester Gearbox: Components and Functionality<\/h2>\n

A tea harvester’s drivetrain is a sophisticated assembly where the agricultural gearbox serves as the primary power distributor. In most Brazilian harvesting models\u2014whether self-propelled or tractor-trailed\u2014the gearbox is positioned between the engine\/hydraulic drive and the cutter bar. Its function is three-fold: Directional Change<\/strong>, Speed Reduction<\/strong>, e Torque Multiplication<\/strong>.<\/p>\n

Inside the casing, the power flow starts at the input shaft, usually equipped with a spline or keyway to connect with the pulley<\/a> or direct drive. The input motion is transferred via a set of precision-ground spiral bevel gears. These gears are critical because they allow the power to turn 90 degrees, moving from a horizontal drive to the vertical or angled oscillation needed for the harvesting blades. The gear teeth are manufactured from high-grade alloy steel (20CrMnTi), subjected to carburizing and quenching to achieve a surface hardness that can withstand the thousands of micro-impacts occurring every minute as the blades strike the tea canopy.<\/p>\n

The output shaft then drives the eccentric cam mechanism or the link arms that move the plucking blades. Our gearboxes often incorporate internal dampers or specialized bearing arrangements to absorb the harmonic vibrations generated by the high-speed blade movement. This “smooth-drive” technology ensures that the tea leaves are cut cleanly at the node, promoting faster regrowth and maintaining the high quality required for export markets like Japan and Europe.<\/p>\n

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\"Ever-power<\/div>\n

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4. Brazil Extreme Operating Conditions Field Study: Adapting to the Tropics<\/h2>\n

Brazil’s tea industry, primarily concentrated in the Ribeira Valley (S\u00e3o Paulo) and parts of the Southern Highlands, presents unique challenges that standard “off-the-shelf” gearboxes fail to address. Through our field studies at Agrinulear Nucleo Agro, we have identified four critical environmental factors that our agricultural gearboxes are specifically designed to overcome:<\/p>\n