{"id":1002,"date":"2026-01-26T08:13:10","date_gmt":"2026-01-26T08:13:10","guid":{"rendered":"https:\/\/agricultural-gearbox.net\/?p=1002"},"modified":"2026-01-26T08:13:10","modified_gmt":"2026-01-26T08:13:10","slug":"application-of-agricultural-gearboxes-in-the-central-gearbox-splitter-box-of-power-harrow-gearboxes","status":"publish","type":"post","link":"https:\/\/agricultural-gearbox.net\/fr\/application\/application-of-agricultural-gearboxes-in-the-central-gearbox-splitter-box-of-power-harrow-gearboxes\/","title":{"rendered":"Application des r\u00e9ducteurs agricoles dans la bo\u00eete de vitesses centrale\/bo\u00eete de r\u00e9partition des bo\u00eetes de vitesses de cultivateurs rotatifs"},"content":{"rendered":"

1. Engineering Specifications & Technical Data<\/h2>\n
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Param\u00e8tre technique<\/th>\nValue \/ Standard<\/th>\nTechnical Note<\/th>\n<\/tr>\n<\/thead>\n
Torque Capacity (Nm)<\/td>\n4,250 – 12,800 Nm<\/td>\nVariable based on model and splitter ratio.<\/td>\n<\/tr>\n
Input Speed Range (RPM)<\/td>\n540 \/ 750 \/ 1,000 RPM<\/td>\nSupports standard tractor PTO outputs.<\/td>\n<\/tr>\n
Plage de rapports de d\u00e9multiplication<\/td>\n1:1.24 to 1:2.85<\/td>\nOptimized for high-speed harrowing.<\/td>\n<\/tr>\n
Input Shaft Specification<\/td>\n1-3\/8″ Z6 or 1-3\/4″ Z20<\/td>\nInvolute spline according to DIN 5482.<\/td>\n<\/tr>\n
Output Shaft Configuration<\/td>\nVertical Tapered Spline<\/td>\nCustomizable for rotor flange interfaces.<\/td>\n<\/tr>\n
Lubrication Type<\/td>\nISO VG 150 \/ 220 Synthetic<\/td>\nFull-life lubrication or periodic oil bath.<\/td>\n<\/tr>\n
Protection Class (IP)<\/td>\nIP67K (Dust & High-Pressure Jet)<\/td>\nMandatory for high-clay environments.<\/td>\n<\/tr>\n
Operating Temp Range<\/td>\n-20\u00b0C to +115\u00b0C<\/td>\nStable performance in Brazil’s hot climate.<\/td>\n<\/tr>\n
Casing Material<\/td>\nQT450-10 Ductile Iron<\/td>\nSuperior vibration dampening & strength.<\/td>\n<\/tr>\n
Gear Material Standard<\/td>\nAGMA 10-12 \/ ISO 6336<\/td>\nPrecision ground for low noise\/high load.<\/td>\n<\/tr>\n
Fatigue Life (L10)<\/td>\n8,000 – 12,000 Hours<\/td>\nUnder standard agricultural load cycles.<\/td>\n<\/tr>\n
Seuil de vibration<\/td>\n< 2.8 mm\/s RMS<\/td>\nEnsures structural integrity of machinery.<\/td>\n<\/tr>\n
Oil Seal Material<\/td>\nViton (FKM) High Temp<\/td>\nResistant to chemical and thermal decay.<\/td>\n<\/tr>\n
Mounting Interface<\/td>\nMulti-Hole Universal Flange<\/td>\nFits 95% of international power harrows.<\/td>\n<\/tr>\n
Bearings Brand<\/td>\nSKF \/ NSK \/ Timken<\/td>\nHigh-capacity tapered roller bearings.<\/td>\n<\/tr>\n
Backlash Range<\/td>\n0.08 – 0.15 mm<\/td>\nPrecision mesh for impact absorption.<\/td>\n<\/tr>\n
Paint Coating<\/td>\nEpoxy Powder Coat (RAL 7016)<\/td>\nUV and salt-spray resistant.<\/td>\n<\/tr>\n
Safety Breather<\/td>\nSelf-Cleaning Anti-Clog Valve<\/td>\nPrevents internal pressure buildup.<\/td>\n<\/tr>\n
Certification<\/td>\nCE, ISO 9001, NR-12 Compliant<\/td>\nReady for global export and safety.<\/td>\n<\/tr>\n
Efficiency Factor<\/td>\n96.5% – 98%<\/td>\nMinimizes energy loss from PTO to tooth.<\/td>\n<\/tr>\n
Input Torque Safety Factor<\/td>\n1.8x Rated Load<\/td>\nProtects against sudden rock strikes.<\/td>\n<\/tr>\n
Weight (kg)<\/td>\n65kg to 145kg<\/td>\nHeavy cast construction for stability.<\/td>\n<\/tr>\n
Oil Level Monitoring<\/td>\nOptical Sight Glass<\/td>\nImmediate visual status check.<\/td>\n<\/tr>\n
Internal Surface Finish<\/td>\nRa < 0.4<\/td>\nReduced friction and oil turbulence.<\/td>\n<\/tr>\n
Spline Hardness (HRC)<\/td>\nHRC 58-62<\/td>\nPrevents wear at the PTO connection.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Voir Plus de Produits<\/a><\/p>\n<\/div>\n

\"bo\u00eete<\/p>\n

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2. Anatomy of the Power Harrow Splitter Gearbox<\/h2>\n
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The “Splitter” Mechanism<\/h4>\n

The primary role of the central gearbox<\/strong> is to act as a 1-to-N distributor. Power enters through the horizontal input shaft and is immediately met by a master bevel gear set. This stage redirects the rotation by 90 degrees to a longitudinal internal shaft, which then meshes with a series of secondary gears that drive the vertical output spindles. In foldable power harrows (typically over 4 meters wide), the splitter box is even more complex, often featuring three separate output stages to drive left, right, and center sections independently.<\/p>\n<\/div>\n

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Dynamic Torque Balancing<\/h4>\n

Unlike a simple rotary tiller, a power harrow demands perfectly synchronized rotor speed. Any variation in torque distribution would cause uneven soil preparation, leading to “panning” or irregular seedbed depth. Our gearbox utilizes a symmetrical gear train that ensures the torsional load is shared equally across the chassis, reducing stress on the machine’s frame and improving tractor fuel efficiency by up to 12% in heavy clay conditions.<\/p>\n<\/div>\n<\/div>\n

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Critical Component Deep-Dive:<\/h4>\n