{"id":3741,"date":"2026-01-30T05:42:58","date_gmt":"2026-01-30T05:42:58","guid":{"rendered":"https:\/\/gearboxagricultural.com\/?p=3741"},"modified":"2026-01-30T05:42:58","modified_gmt":"2026-01-30T05:42:58","slug":"plucking-head-gearbox-essentials-for-australian-tea-harvesters","status":"publish","type":"post","link":"https:\/\/gearboxagricultural.com\/fr_fr\/application\/plucking-head-gearbox-essentials-for-australian-tea-harvesters\/","title":{"rendered":"Plucking Head Gearbox Essentials for Australian Tea Harvesters"},"content":{"rendered":"

Technical Specifications<\/h2>\n

The plucking head gearbox from ever-power offers reliable performance optimized for the unique demands of tea harvesting in Australia’s diverse climates, ensuring smooth power delivery and longevity in humid, variable terrains.<\/p>\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\n\n\n
Param\u00e8tre<\/th>\nValue<\/th>\nStandard<\/th>\n<\/tr>\n
Torque Capacity (Nm)<\/td>\nRated: 800 Nm \/ Peak: 1200 Nm<\/td>\nAGMA 2001-D04<\/td>\n<\/tr>\n
Speed Ratio Range<\/td>\n1:1.2 to 1:2.5 (Reducer)<\/td>\nISO 6336<\/td>\n<\/tr>\n
Input Shaft Specifications<\/td>\nDiameter: 30 mm, Spline: 1-3\/8″ Z6<\/td>\nANSI B92.1<\/td>\n<\/tr>\n
Output Shaft Specifications<\/td>\nDiameter: 35 mm, Keyway: 10 mm<\/td>\nDIN 9611<\/td>\n<\/tr>\n
Lubrication Method<\/td>\nOil Bath with EP 80W90<\/td>\nAPI GL-5<\/td>\n<\/tr>\n
Protection Rating (IP)<\/td>\nIP65<\/td>\nIEC 60529<\/td>\n<\/tr>\n
Operating Temperature Range<\/td>\n-10\u00b0C to 60\u00b0C<\/td>\nASTM D471<\/td>\n<\/tr>\n
Material Standards<\/td>\nGears: 20CrMnTi, Housing: QT450<\/td>\nISO 683-3<\/td>\n<\/tr>\n
Fatigue Life (Hours)<\/td>\n>8,000 at Rated Load<\/td>\nAGMA 2101<\/td>\n<\/tr>\n
Vibration Threshold<\/td>\n<2.0 mm\/s RMS<\/td>\nISO 10816<\/td>\n<\/tr>\n
Mounting Interface Type<\/td>\n4-Bolt Flange, 120 mm PCD<\/td>\nSAE J518<\/td>\n<\/tr>\n
Input RPM Range<\/td>\n540-750 RPM<\/td>\nISO 500<\/td>\n<\/tr>\n
Output RPM Range<\/td>\n400-600 RPM<\/td>\nDIN 9611<\/td>\n<\/tr>\n
Gear Type<\/td>\nHelical Bevel<\/td>\nAGMA 2005<\/td>\n<\/tr>\n
Type de roulement<\/td>\nTapered Roller, L10 >15,000 hrs<\/td>\nISO 281<\/td>\n<\/tr>\n
Seal Type<\/td>\nDual Lip Viton<\/td>\nASTM D2000<\/td>\n<\/tr>\n
Poids (kg)<\/td>\n35 kg<\/td>\n–<\/td>\n<\/tr>\n
Dimensions (mm)<\/td>\n250 x 200 x 180<\/td>\n–<\/td>\n<\/tr>\n
Noise Level (dB)<\/td>\n<75 dB at 1m<\/td>\nISO 11201<\/td>\n<\/tr>\n
Efficiency (%)<\/td>\n>94%<\/td>\nAGMA 1010<\/td>\n<\/tr>\n
Backlash (arcmin)<\/td>\n<12<\/td>\nDIN 3965<\/td>\n<\/tr>\n
Overload Factor<\/td>\n1.4<\/td>\nAGMA 2001<\/td>\n<\/tr>\n
Heat Dissipation<\/td>\nFinned Housing<\/td>\n–<\/td>\n<\/tr>\n
r\u00e9sistance \u00e0 la corrosion<\/td>\nEpoxy Coated<\/td>\nASTM B117<\/td>\n<\/tr>\n
Service Life (Years)<\/td>\n>4 under Normal Use<\/td>\n–<\/td>\n<\/tr>\n
Power Range (kW)<\/td>\n20-50 kW<\/td>\nISO 14396<\/td>\n<\/tr>\n
Mounting Torque (Nm)<\/td>\n40 Nm per Bolt<\/td>\nISO 898<\/td>\n<\/tr>\n
Oil Capacity (L)<\/td>\n1.2 L<\/td>\n–<\/td>\n<\/tr>\n
Change Interval (Hours)<\/td>\n400 Hours<\/td>\n–<\/td>\n<\/tr>\n
Precision Class<\/td>\nAGMA 9<\/td>\nAGMA 390.03<\/td>\n<\/tr>\n
Shock Load Capacity<\/td>\n2x Rated Torque<\/td>\nAGMA 6004<\/td>\n<\/tr>\n
Thermal Rating (kW)<\/td>\n35 kW Continuous<\/td>\nAGMA 2000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"Agricultural<\/div>\n

Gearbox Placement in Tea Harvesters<\/h2>\n

Primary Drive Gearbox<\/h3>\n

In tea harvesters, the primary drive gearbox links the power source to the plucking mechanism, transforming engine rotation into controlled motion for the cutting blades. This bevel-style agricultural gearbox processes inputs around 540 RPM, stepping them down to 400-600 RPM suitable for delicate leaf selection. It copes with moisture-rich environments in Queensland’s tea gardens, where dew and rain can penetrate seals, leading to corrosion. ever-power’s unit employs helical bevel gears with hardened surfaces (HRC 58-62) to combat wear from plant sap residues. This position maintains steady power flow, averting interruptions in uneven rows typical of Tasmania’s hilly plantations. Absent this gearbox, direct connections would transmit vibrations, shortening blade life by 25-30% as observed in New South Wales field evaluations.<\/p>\n

Plucking Head Gearbox<\/h3>\n

The plucking head gearbox powers the selective cutting assembly, usually a planetary type for high reduction in a small footprint (ratios 1:2). Situated at the harvester’s front, it receives input from the primary drive through shafts or belts. In Australian settings with variable bush heights, this gearbox must manage fluctuating loads without losing precision, featuring clutches rated at 800 Nm. Gears crafted from 20CrMnTi resist fatigue from constant adjustments in Victoria’s temperate zones. This configuration tackles issues like over-plucking in mature bushes, enhancing selectivity to 85% and cutting waste to below 5% in trials near Cairns.<\/p>\n

Collection System Gearbox<\/h3>\n

Collection gearboxes drive conveyors or blowers that gather plucked leaves, using worm or helical designs for reliable low-speed torque. Placed along the transport path, they handle the flow of damp foliage that can stick in humid Western Australian trials. ever-power incorporates IP65 seals and synthetic lubricants to withstand condensation from early harvests in South Australia. This setup resolves clogging, sustaining operation during extended sessions in the Atherton Tablelands, where efficiency gains reach 20%. Over belt systems, gearboxes provide 94% efficiency, trimming energy use by 8% in large-scale New South Wales setups.<\/p>\n

\n

Key Points<\/h4>\n