| Technische parameter<\/th>\n | Specificatie \/ Waarde<\/th>\n | Eenheid \/ Context<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|---|
| Ingangsspanning<\/td>\n | 127V \/ 220V \/ 380V<\/td>\n | Brazil Grid Standard<\/td>\n<\/tr>\n |
| Motor Power<\/td>\n | 0.37 – 0.75<\/td>\n | kW (Heavy Duty)<\/td>\n<\/tr>\n |
| Output Speed (High)<\/td>\n | 3200 – 3500<\/td>\n | OMW<\/td>\n<\/tr>\n |
| Output Speed (Low)<\/td>\n | 2800 – 3000<\/td>\n | OMW<\/td>\n<\/tr>\n |
| Drive Mechanism<\/td>\n | Friction Cone \/ V-Belt<\/td>\n | Koppelingstype<\/td>\n<\/tr>\n |
| Downtube Interface<\/td>\n | Bayonet \/ Pin \/ Worm<\/td>\n | Universal Fit<\/td>\n<\/tr>\n |
| Huisvestingsmateriaal<\/td>\n | Die-Cast Aluminum ADC12<\/td>\n | Lightweight<\/td>\n<\/tr>\n |
| Lagertype<\/td>\n | Double Shielded Ball<\/td>\n | High RPM Rating<\/td>\n<\/tr>\n |
| Isolatieklasse<\/td>\n | Klasse F (155\u00b0C)<\/td>\n | Thermische Bescherming<\/td>\n<\/tr>\n |
| Ingress Protection<\/td>\n | IP54<\/td>\n | Stofbestendig<\/td>\n<\/tr>\n |
| Geluidsniveau<\/td>\n | < 72<\/td>\n | dB (at 1 meter)<\/td>\n<\/tr>\n |
| Vibration<\/td>\n | Minder dan 2.5<\/td>\n | mm\/s RMS<\/td>\n<\/tr>\n |
| Switch Type<\/td>\n | Pull Cord \/ Rope Switch<\/td>\n | Safety Mechanism<\/td>\n<\/tr>\n |
| Weight (Head Only)<\/td>\n | 8.5 – 12.0<\/td>\n | kg<\/td>\n<\/tr>\n |
| Mounting Hook<\/td>\n | Swivel 360 Degrees<\/td>\n | Steel Forged<\/td>\n<\/tr>\n |
| Capacitor Type<\/td>\n | Dual Run\/Start<\/td>\n | High Torque Start<\/td>\n<\/tr>\n |
| Koelsysteem<\/td>\n | Forced Air Fan<\/td>\n | Integral<\/td>\n<\/tr>\n |
| Smering<\/td>\n | Sealed for Life Grease<\/td>\n | High Temp<\/td>\n<\/tr>\n |
| Frequency<\/td>\n | 60<\/td>\n | Hz<\/td>\n<\/tr>\n |
| Overload Protection<\/td>\n | Thermal Reset Button<\/td>\n | Safety<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
2. The Kinetic Heart of the Shearing Shed: Why Transmission Stability Matters<\/h2>\nIn the vast sheep stations (Est\u00e2ncias) of Southern Brazil, particularly in the Pampa Biome of Rio Grande do Sul, the shearing season is a critical time-sensitive operation. Professional shearers require an Overhead Plant Gearbox<\/strong> that provides absolute consistency. Unlike a tractor-driven aftakasoverbrenging<\/strong> which deals with low-speed high-torque soil engagement, a shearing plant gearbox operates at high velocities, typically driving the downtube at speeds between 2800 and 3500 RPM. Any fluctuation in this speed due to load changes\u2014such as encountering dense, matted wool or “dags”\u2014can cause the handpiece to lock up or “chew” the fleece, endangering both the shearer and the animal. Agrinulear Nucleo Agro has engineered a transmission unit that utilizes a heavy-duty friction cone or belt-drive reduction system with a high-inertia flywheel effect. This ensures that even when the cutter enters the thickest part of a Merino winter fleece, the momentum is maintained, providing a smooth, “buttery” cut that maximizes wool quality and harvest speed.<\/p>\n Furthermore, the operational environment in a Brazilian shearing shed (Galp\u00e3o de Esquila) is notoriously dusty, filled with lanolin grease, and subject to intense summer heat. A standard electric motor gearbox with poor sealing will quickly ingest wool fibers and dust, leading to overheating and bearing seizure. Our landbouw tandwielkast<\/strong> units for overhead plants feature a specialized “Labyrinth Ventilation” system. This design allows for aggressive air cooling to dissipate the heat generated by the high-speed mechanics while physically barring the entry of contaminants. The housing is cast from high-tensile aluminum alloy to reduce the hanging weight on the truss beam while providing exceptional thermal conductivity. This attention to detail defines Agrinulear as a premier landbouwfabrikant<\/strong> dedicated to the specific needs of the wool industry.<\/p>\n <\/p>\n The core function of an overhead shearing plant is to convert electrical energy into high-speed rotational mechanical energy, which is then transmitted down a flexible shaft (downtube) to the handpiece. The landbouw tandwielkast<\/strong> element within the plant is crucial for torque management. In traditional “Friction Drive” models, a leather or rubber cone on the motor shaft engages with a friction wheel on the downtube drive. This system acts as a mechanical clutch; if the handpiece jams (e.g., hits wire or skin), the friction wheel slips, instantly cutting power to the cutters. This is a vital safety feature. Agrinulear has refined this classic design with a self-adjusting tension spring that maintains constant contact pressure even as the friction cone wears, ensuring that the shearer doesn’t lose drive power in the middle of a run.<\/p>\n Alternatively, modern “Sensor-Drive” units utilize a direct gearbox coupling with an electronic cutoff. When the torque sensor detects a spike (indicating a jam), it cuts the power in milliseconds. While this offers a compact design, many Brazilian shearers prefer the mechanical feedback of the friction drive. Our gearboxes are designed to accommodate both drive styles. The output shaft is precision-machined to accept standard “Pin” or “Worm” drive connections, making them compatible with virtually all downtubes on the market, including Lister, Heiniger, and Sunbeam legacy equipment. The internal bearings are oversized to handle the lateral loads exerted when the shearer pulls the downtube across the shearing board.<\/p>\n <\/p>\n Brazil presents a unique challenge for electric agricultural machinery due to its “Dual Voltage” grid. In rural areas of Rio Grande do Sul, the power supply can be 220V single-phase, whereas in other regions it might be 127V. Using a motor designed for the wrong voltage results in overheating and torque loss. Agrinulear Overhead Plant Gearboxes<\/strong> feature dual-voltage capacitor motors with an easy-switch terminal box, allowing the shearer to adapt the machine to the local power supply on-site. We also include a built-in voltage stabilizer circuit to handle the “dirty power” and voltage drops common at the end of long rural distribution lines.<\/p>\n Moreover, the humidity in Southern Brazil can be intense. During the shearing season, morning fog and humidity can condense on cold metal machinery. To prevent electrical shorts and corrosion, our gearbox housings undergo an anodic oxidation process before painting, providing a double layer of protection. The switch gear is sealed with a silicone boot to prevent moisture ingress. We also recognize that many shearing sheds are open-air structures; thus, our hanging hooks are fitted with a vibration-dampening rubber bushing to reduce the noise and structural vibration transmitted to the building frame, creating a quieter, safer environment for the shearing team.<\/p>\n <\/p>\n <\/p>\n Agrinulear Nucleo Agro positions its overhead plants as the ultimate universal replacement. We understand that shearing teams often travel with their own downtubes and handpieces but rely on the farm’s overhead motors. Our units are designed to be mechanically compatible with the most common global interfaces found in Brazil. Whether you are replacing an aging motor or setting up a new shed, our gearboxes integrate seamlessly with:<\/p>\n Disclaimer:<\/strong> All original equipment manufacturer (OEM) names, trademarks, and model numbers (e.g., Heiniger, Lister, Sunbeam) are for reference and identification purposes only. Agrinulear Nucleo Agro is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by these brands.<\/p>\n <\/p>\n <\/p>\n “The dense wool of our Merino flock usually overheats standard motors within 2 hours. We installed the Agrinulear High-Torque plant. It ran cool all day, and the constant RPM meant fewer second-cuts. The shearers were very happy with the power.”<\/p>\n – Est\u00e2ncia Owner, Sr. Ricardo<\/span><\/p>\n<\/div>\n “As a shearing contractor, I move my gear every week. The robust aluminum housing of the Agrinulear unit takes the bumps of travel better than the plastic casings of newer competitors. It hasn’t missed a beat in 3 seasons.”<\/p>\n – Contractor, Mateo G.<\/span><\/p>\n<\/div>\n “Temperatures here are near zero in the morning. Old gearboxes were sluggish due to thick grease. Agrinulear’s synthetic low-temp lubrication meant the plant spun up to full speed instantly, no warm-up needed.”<\/p>\n – Farm Manager, Lucas P.<\/span><\/p>\n<\/div>\n “We shear 4000 head in a week. The vibration dampening on the Agrinulear hanging hook made a huge difference to the noise level in the shed. Less fatigue for the boys at the end of the day.”<\/p>\n – Station Manager, Ben T.<\/span><\/p>\n<\/div>\n “Our grid power is terrible, often dropping to 190V. The Agrinulear plant with the run-capacitor maintained torque where other motors would stall out in the fleece. A lifesaver for our remote farm.”<\/p>\n – Smallholder, Jo\u00e3o S.<\/span><\/p>\n<\/div>\n<\/div>\n The global trend in wool harvesting is moving towards increased shearer safety and animal welfare. Future Overhead Plant Gearboxes<\/strong> will likely integrate “Smart-Sense” technology, using electronic torque monitoring to detect lock-ups faster than mechanical friction clutches can react. This will reduce injury rates significantly. Additionally, there is a push for “Silent Shearing” technologies\u2014brushless DC motors (BLDC) that reduce the high-pitched whine of traditional AC motors, preserving the hearing of shearers over their careers. Agrinulear is actively researching these innovations to bring the next generation of safe, quiet, and powerful shearing plants to the Brazilian market.<\/p>\n <\/p>\n |
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