{"id":3213,"date":"2026-02-05T05:26:15","date_gmt":"2026-02-05T05:26:15","guid":{"rendered":"https:\/\/agriculturalgearboxes.top\/?p=3213"},"modified":"2026-02-06T07:27:16","modified_gmt":"2026-02-06T07:27:16","slug":"heavy-duty-feed-roller-gearboxes-for-forestry-harvesters-uk-market-edition","status":"publish","type":"post","link":"https:\/\/agriculturalgearboxes.top\/fr\/application\/heavy-duty-feed-roller-gearboxes-for-forestry-harvesters-uk-market-edition\/","title":{"rendered":"Bo\u00eetes de vitesses robustes pour rouleaux d'alimentation destin\u00e9s aux abatteuses foresti\u00e8res : \u00c9dition pour le march\u00e9 britannique"},"content":{"rendered":"
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Engineered to dominate the demanding terrain of the Scottish Highlands and Welsh forestry plantations. High-torque transmission solutions for debarking and feeding mechanisms.<\/p>\n<\/div>\n

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The Heart of the Harvester Head: Unyielding Torque Control<\/h2>\n

\"Bo\u00eetesIn the high-stakes environment of commercial forestry, particularly within the United Kingdom’s dense Sitka Spruce and Scots Pine plantations, the feed roller gearbox is arguably the most stressed component on a harvester head. It serves as the critical muscle, converting hydraulic power into the precise, massive torque required to grip, feed, and delimb trees at speeds exceeding 5 meters per second.<\/p>\n

EVER-POWER has re-engineered the standard feed roller drive to address the specific “stop-start” shock loads common in UK forestry operations. Unlike generic agricultural gearboxes, our forestry-spec units are designed to withstand the immediate resistance changes caused by heavy branching and crooked timber often found in wind-blown areas like Cumbria or Northumberland. By optimizing the gear tooth geometry and utilizing vacuum-carburized alloy steels, we deliver a transmission system that ensures your harvesting head maintains grip without slipping, reducing damage to the timber and maximizing cubic meter output per hour.<\/p>\n<\/div>\n<\/div>\n

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Matrice des sp\u00e9cifications techniques<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Param\u00e8tre<\/th>\nDonn\u00e9es de sp\u00e9cification<\/th>\nStandard\/Notes<\/th>\n<\/tr>\n
Couple de sortie nominal<\/td>\n2,500 Nm – 4,200 Nm<\/td>\nContinuous Duty<\/td>\n<\/tr>\n
Peak Shock Torque<\/td>\n7,800 Nm<\/td>\nIntermittent (< 2s)<\/td>\n<\/tr>\n
Taux de r\u00e9duction<\/td>\n38.4:1<\/td>\nOptimized for Hyd. Motors<\/td>\n<\/tr>\n
Vitesse d'entr\u00e9e (Max)<\/td>\n3,500 RPM<\/td>\nHydraulic Motor Driven<\/td>\n<\/tr>\n
Mat\u00e9riel d'\u00e9quipement<\/td>\n20CrMnTiH Alloy Steel<\/td>\nDIN 17210<\/td>\n<\/tr>\n
Case Hardening Depth<\/td>\n0.8mm – 1.2mm<\/td>\nHRC 58-62<\/td>\n<\/tr>\n
Efficacit\u00e9<\/td>\n\u2265 94%<\/td>\nPer ISO\/TR 14179<\/td>\n<\/tr>\n
Type de lubrification<\/td>\nOil Bath (Synthetic)<\/td>\nISO VG 220<\/td>\n<\/tr>\n
Capacit\u00e9 p\u00e9troli\u00e8re<\/td>\n1.8 Liters<\/td>\n+\/- 5%<\/td>\n<\/tr>\n
Mat\u00e9riau du bo\u00eetier<\/td>\nDuctile Iron QT500-7<\/td>\nASTM A536<\/td>\n<\/tr>\n
Cannelure de l'arbre d'entr\u00e9e<\/td>\n14T 12\/24 DP<\/td>\nANSI B92.1<\/td>\n<\/tr>\n
Output Hub Pattern<\/td>\n8-Bolt Circle (220mm PCD)<\/td>\nWheel Hub Standard<\/td>\n<\/tr>\n
Radial Load Rating<\/td>\n45 kN<\/td>\nAt Output Hub Center<\/td>\n<\/tr>\n
Axial Load Rating<\/td>\n18 kN<\/td>\nDynamic<\/td>\n<\/tr>\n
Plage de temp\u00e9ratures de fonctionnement<\/td>\n-30\u00b0C to +90\u00b0C<\/td>\nAll-Season Seal Pack<\/td>\n<\/tr>\n
Mat\u00e9riau d'\u00e9tanch\u00e9it\u00e9<\/td>\nFKM (Viton) Double Lip<\/td>\nMud\/Water Resistant<\/td>\n<\/tr>\n
Roulements<\/td>\nTapered Roller (Heavy Duty)<\/td>\nL10 Life > 5000 hrs<\/td>\n<\/tr>\n
Contrecoup<\/td>\n8 \u00e0 12 minutes d'arc<\/td>\nPrecision Class<\/td>\n<\/tr>\n
Niveau sonore<\/td>\n< 75 dB(A)<\/td>\nAt 1 meter<\/td>\n<\/tr>\n
Rev\u00eatement de peinture<\/td>\nEpoxy Primer + PU Topcoat<\/td>\nSalt Spray Test > 500h<\/td>\n<\/tr>\n
Vibration Resistance<\/td>\n10G<\/td>\n10-500 Hz<\/td>\n<\/tr>\n
Indice de protection IP<\/td>\nIP67<\/td>\nSubmersible (Temp)<\/td>\n<\/tr>\n
Poids (\u00e0 sec)<\/td>\n42 kg<\/td>\n–<\/td>\n<\/tr>\n
Orientation de montage<\/td>\nUniversal<\/td>\nBreather Valve Adjustable<\/td>\n<\/tr>\n
Type de respirateur<\/td>\nFiltre en bronze fritt\u00e9<\/td>\nAnti-Clogging<\/td>\n<\/tr>\n
Facteur de service<\/td>\n1.75<\/td>\nAGMA Class II<\/td>\n<\/tr>\n
Input Motor Flange<\/td>\nSAE C 2-Bolt<\/td>\nStandard Fitment<\/td>\n<\/tr>\n
Garantie<\/td>\n18 Months \/ 2000 Hrs<\/td>\nWhichever comes first<\/td>\n<\/tr>\n
Country of Origin<\/td>\nChina (Hangzhou)<\/td>\nEVER-POWER Factory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n
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Functional Anatomy<\/h3>\n

The feed roller gearbox locates directly on the harvester head chassis. It acts as the intermediary between the high-speed hydraulic orbit motor and the feed roller wheels. Its primary function is speed reduction and torque multiplication. Inside, a multi-stage planetary gear set allows for a compact footprint while handling immense torque density.<\/p>\n

Unlike standard reducers, our unit features a reinforced output hub bearing assembly specifically designed to absorb the **radial forces** generated when the roller arms clamp down on a tree trunk. This isolation ensures that the clamping force does not distort the internal gear mesh, a common cause of premature failure in competitor units.<\/p>\n<\/div>\n

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Adapting to the Environment<\/h3>\n

Forestry is unforgiving. In the UK, the combination of abrasive soil (often embedded in the bark of skidded timber) and wet conditions creates a “grinding paste” that attacks seals. To combat this, EVER-POWER gearboxes feature a **Cassette Seal System** with an integrated labyrinth shield. This prevents debris from reaching the main Viton oil seal.<\/p>\n

Furthermore, to address the thermal cycling of cold Scottish mornings followed by intense heat generation during operation, our housings incorporate expanded cooling fins and a high-flow pressure relief breather that prevents vacuum formation during cooldown, eliminating the suction of moisture into the gear oil.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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[UK Field Study] Extreme Operating Conditions: Kielder Forest & The Highlands<\/h2>\n

“The mud here doesn’t just sit; it grinds.”<\/p>\n

The United Kingdom presents a unique metallurgical challenge for forestry gearboxes. Unlike the frozen, clean logging of Scandinavia, UK forestry\u2014particularly in regions like Dumfries & Galloway and the Welsh Valleys\u2014often involves harvesting in wet, peat-heavy soils. When a harvester head grabs a tree, the feed rollers are often submerged in mud or coated in abrasive grit.<\/p>\n

Our field analysis in **Kielder Forest** revealed that standard gearbox output seals were failing within 600 hours due to grit ingress. Consequently, we introduced a **chromized wear sleeve** on the output shaft tailored for the UK market. This hardened surface resists the scoring action of silica-rich mud, extending seal life by over 200% compared to standard ground steel shafts used by continental European suppliers.<\/p>\n<\/div>\n<\/div>\n

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Comparative Advantage Analysis<\/h2>\n
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Fonctionnalit\u00e9<\/th>\nEVER-POWER Forestry Series<\/th>\nStandard OEM Market Equivalent<\/th>\n<\/tr>\n<\/thead>\n
Seal Protection<\/strong><\/td>\nTriple-lip Viton + Mud Block Labyrinth<\/td>\nSingle or Double Lip NBR<\/td>\n<\/tr>\n
Gear Core Hardness<\/strong><\/td>\nHRC 32-38 (High Toughness)<\/td>\nHRC 40+ (Brittle under shock)<\/td>\n<\/tr>\n
Input Spline<\/strong><\/td>\nNitrided for Fretting Resistance<\/td>\nStandard Case Hardened<\/td>\n<\/tr>\n
Disponibilit\u00e9<\/strong><\/td>\nStocked for Immediate Dispatch<\/td>\nOften 8-12 Weeks Lead Time<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

*Disclaimer: All Original Equipment Manufacturer (OEM) names (e.g., Lohmann, Rexroth, Bonfiglioli) and part numbers are used for reference purposes only. EVER-POWER products are replacement parts and are not manufactured by the original equipment manufacturers.<\/p>\n<\/div>\n

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Proven Compatibility<\/h3>\n

Our Feed Roller Gearboxes are engineered as direct-fit replacements for a wide range of forestry harvester heads operating in the UK and Europe. (Note: Not an exhaustive list, please check specific part numbers).<\/p>\n