{"id":3232,"date":"2026-02-05T09:37:33","date_gmt":"2026-02-05T09:37:33","guid":{"rendered":"https:\/\/agriculturalgearboxes.top\/?p=3232"},"modified":"2026-02-06T07:26:29","modified_gmt":"2026-02-06T07:26:29","slug":"heavy-duty-winch-drive-gearbox-for-forestry-log-skidders","status":"publish","type":"post","link":"https:\/\/agriculturalgearboxes.top\/fr\/application\/heavy-duty-winch-drive-gearbox-for-forestry-log-skidders\/","title":{"rendered":"Bo\u00eete de vitesses robuste pour treuil de d\u00e9bardage forestier"},"content":{"rendered":"
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Engineered for the Unforgiving Terrains of the Scottish Highlands and Welsh Valleys. UKCA Compliant. 100% Interchangeable with Major OEM Brands.<\/p>\n<\/div>\n

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The Heart of Extraction: Why Our Gearbox Redefines Forestry Efficiency<\/h2>\n

\"Bo\u00eetesIn the grueling environment of commercial forestry, the winch drive gearbox is the unsung hero of the log skidder. It serves as the critical torque multiplier, converting high-speed hydraulic or PTO input into the massive, controlled pulling force required to extract 5-ton Sitka Spruce logs from peat bogs and steep slopes. At Ever-Power, we don’t just build gears; we engineer torque continuity systems.<\/p>\n

Our Series-W Planetary Winch Drives are designed specifically to address the “Stop-Start” shock loading inherent in UK forestry operations. Whether you are operating a grapple skidder in the Kielder Forest or a cable skidder in the muddy terrain of Argyll, our gearboxes eliminate the common failures of thermal runaway during high-cycle braking and bearing brinelling caused by sudden stump impacts. By integrating advanced carburized alloy steels and a proprietary “wet-brake” cooling channel, we ensure your machinery stays operational during the critical harvesting windows.<\/p>\n

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\u26a0\ufe0f Engineer’s Note: The “Peat Seal” Innovation<\/h3>\n

“Standard industrial gearboxes fail in forestry because they breathe in moisture. During our field tests in North Yorkshire, we found that as gearboxes cool down after a heavy shift, they create a vacuum that sucks in wet peat mud through standard seals. Ever-Power gearboxes now feature a dual-lip labyrinth seal with a dedicated pressure compensation chamber<\/strong>, effectively locking out contaminants even when submerged in boggy tracks.”<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Technical Specifications: Series-W Forestry Edition<\/h2>\n
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Description des param\u00e8tres<\/th>\nValeur \/ Norme<\/th>\nEngineer’s Remark<\/th>\n<\/tr>\n<\/thead>\n
Max Output Torque (Peak)<\/td>\n52,000 Nm<\/td>\nDesigned for 50-ton shock loads<\/td>\n<\/tr>\n
Continuous Torque Rating<\/td>\n38,500 Nm<\/td>\nISO 6336 sustained load<\/td>\n<\/tr>\n
Plage de rapport de r\u00e9duction<\/td>\n1:24.8 to 1:147.5<\/td>\nCustomizable per stage<\/td>\n<\/tr>\n
Vitesse d'entr\u00e9e (Max)<\/td>\n3\u00a0500 tr\/min<\/td>\nHydraulic motor optimized<\/td>\n<\/tr>\n
G\u00e9om\u00e9trie des engrenages<\/td>\nPlanetary (Sun & Planet)<\/td>\n3-Stage compact design<\/td>\n<\/tr>\n
Efficacit\u00e9 par \u00e9tape<\/td>\n97.5%<\/td>\ndents rectifi\u00e9es avec pr\u00e9cision<\/td>\n<\/tr>\n
Braking System<\/td>\nIntegrated Multi-Disc Failsafe<\/td>\nSpring applied, hydraulic release<\/td>\n<\/tr>\n
Brake Holding Torque<\/td>\n65,000 Nm (Static)<\/td>\nSafety Factor 1.5x<\/td>\n<\/tr>\n
Capacit\u00e9 de lubrification<\/td>\n4.5 Litres<\/td>\nSplash + Forced channels<\/td>\n<\/tr>\n
Oil Viscosity Recommended<\/td>\nISO VG 220 \/ Synthetic<\/td>\nFor -20\u00b0C to +90\u00b0C ops<\/td>\n<\/tr>\n
Mat\u00e9riau du bo\u00eetier<\/td>\nSpheroidal Graphite Iron (QT500-7)<\/td>\nhaute r\u00e9sistance aux chocs<\/td>\n<\/tr>\n
Mat\u00e9riel d'\u00e9quipement<\/td>\nAcier alli\u00e9 20CrMnTiH<\/td>\nC\u00e9mentation \u00e0 58-62 HRC<\/td>\n<\/tr>\n
Heat Treatment Depth<\/td>\n1.2mm – 1.5mm effective case<\/td>\nPrevents pitting fatigue<\/td>\n<\/tr>\n
Output Shaft Spline<\/td>\nDIN 5480 Standard<\/td>\nHardened for wear resistance<\/td>\n<\/tr>\n
Input Mounting Flange<\/td>\nSAE C \/ SAE D<\/td>\nUniversal hydraulic fit<\/td>\n<\/tr>\n
Dur\u00e9e de vie des roulements (L10)<\/td>\n> 15 000 heures<\/td>\nHeavy-duty roller bearings<\/td>\n<\/tr>\n
Syst\u00e8me d'\u00e9tanch\u00e9it\u00e9<\/td>\nDual Cassette + Mud Shield<\/td>\nIP67 Equivalent<\/td>\n<\/tr>\n
Rev\u00eatement de peinture<\/td>\nAppr\u00eat \u00e9poxy + polyur\u00e9thane<\/td>\nSalt spray test 500h<\/td>\n<\/tr>\n
Niveau sonore<\/td>\n< 78 dB \u00e0 1 m<\/td>\nProfil de dent rectifi\u00e9<\/td>\n<\/tr>\n
Puissance thermique nominale<\/td>\n28 kW (without cooling)<\/td>\nDissipation optimized housing<\/td>\n<\/tr>\n
Capacit\u00e9 de charge axiale<\/td>\n220 kN<\/td>\nDrum thrust handling<\/td>\n<\/tr>\n
Capacit\u00e9 de charge radiale<\/td>\n310 kN<\/td>\nCable tension support<\/td>\n<\/tr>\n
Intervalle de vidange d'huile<\/td>\nFirst 50h, then every 1000h<\/td>\nOr annually<\/td>\n<\/tr>\n
Ambient Temp Range<\/td>\n-30\u00b0C to +50\u00b0C<\/td>\nWinter\/Summer versatile<\/td>\n<\/tr>\n
Clutch Pressure<\/td>\n20-25 Bar<\/td>\nHydraulic actuation<\/td>\n<\/tr>\n
Contrecoup<\/td>\n10-15 arcmin<\/td>\nqualit\u00e9 de pr\u00e9cision<\/td>\n<\/tr>\n
Poids (\u00e0 sec)<\/td>\n245 kg<\/td>\nHigh power-to-weight ratio<\/td>\n<\/tr>\n
Couleur standard<\/td>\nForestry Yellow \/ Black<\/td>\nPersonnalisable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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Mechanical Integration & Function<\/h3>\n

The Ever-Power Winch Drive Gearbox is ingeniously integrated directly into the winch drum core<\/strong> of the skidder. This “drum-integrated” design minimizes the overall footprint and protects the drivetrain from external impacts\u2014a common hazard in dense UK spruce plantations. The Operational Cycle:<\/strong><\/p>\n