Constant Pressure in Every Turn
Wide-Angle PTO Solutions for Trailed Sprayers & Orchard Misters
I have spent 18 years in the field, and I’ve seen too many expensive spray jobs ruined by “pressure pulsing.” When a trailed sprayer turns at the headland (kopakker), a standard PTO shaft creates velocity fluctuations. This causes the diaphragm pump to surge. The result? Under-dosing in the turn (risk of disease) and over-dosing on the straight (chemical burn and waste). In a country with strict environmental regulations, this inconsistency is unacceptable.
В компании EVER-POWER мы занимаемся проектированием. Wide-Angle (Constant Velocity) PTO Shafts specifically for the tight-turning geometry of Dutch fields and orchards. Our shafts ensure that your pump runs at a dead-steady 540 RPM, whether you are driving straight or making a 90-degree turn into the next row.
Из записной книжки инженера:
“I recall a troubleshooting call with a fruit grower near Geldermalsen. He was using a Munckhof orchard sprayer with a tracking drawbar. He complained that his diaphragm pump seals were blowing out every 200 hours. The dealer was baffled.
I watched him turn. He was using a standard shaft. At the end of every row, as the tractor turned 90 degrees to enter the next lane, the shaft angle hit 45 degrees. The ‘knocking’ vibration was hammering the pump shaft like a jackhammer. We installed a Series 4 Double Wide-Angle (CV-CV) Shaft. The knocking vanished. The pump pressure gauge stayed rock steady during the entire turn. He hasn’t replaced a seal in two years. The shaft paid for itself in one season.”
Technical Specifications: Engineered for Fluid Dynamics
Sprayer pumps (diaphragm or piston) require smooth rotation to maintain constant pressure. Below are the verified parameters for our “EP-Spray-CV” series.
| Идентификатор параметра | Технический атрибут | Значение спецификации | Примечание к применению |
|---|---|---|---|
| ТС-01 | Классификация серий | Series 4 / Series 6 | Pump Drive Optimized |
| ТС-02 | Номинальный крутящий момент (540 об/мин) | 780 Нм | Continuous smooth load |
| ТС-03 | Максимальный крутящий момент амортизатора | 1,250 Nm | Start-up spike protection |
| ТС-04 | Номинальная мощность (540 об/мин) | 35 kW / 47 HP | @ 5° Joint Angle |
| ТС-05 | Номинальная мощность (1000 об/мин) | 54 kW / 74 HP | @ 5° Joint Angle |
| ТС-06 | Шлицевой вал трактора | 1 3/8″ – 6 Spline (Z6) | DIN 9611 Standard |
| ТС-07 | Реализация сплайна | 1 3/8″ – 6 Spline (Z6) | Standard Pump Input |
| ТС-08 | Профиль трубы | Lemon / Star | Телескопическая конструкция с низким коэффициентом трения |
| ТС-09 | Толщина внутренней камеры | 4.0 mm | Cold Drawn Steel |
| ТС-10 | Толщина внешней трубы | 3.2 mm | Cold Drawn Steel |
| ТС-11 | Длина телескопического выдвижения (мин.) | 810 мм | Compressed |
| ТС-12 | Максимальная длина телескопического выдвижения | 1210 мм | Working Extension |
| ТС-13 | Угол шарнира равных угловых скоростей | 80 градусов | Wide Angle (Both Ends Option) |
| ТС-14 | Standard Joint Angle | 25 градусов | If a single CV |
| ТС-15 | Cross Kit (CV Side) | 27.0 x 100.0 mm | Center Plate Design |
| ТС-16 | Cross Kit (Std Side) | 27.0 x 74.6 mm | Standard Series 4 |
| ТС-17 | Предохранительная муфта | None / Shear Bolt | Pump Protection |
| ТС-18 | Защитный материал | HDPE (жёлтый) | UV & Chemical Resistant |
| ТС-19 | Защитные подшипники | Nylon 66 | Easy Rotation |
| ТС-20 | Интервал смазки | 8 Hours / 50 Hours | Standard / Extended |
| ТС-21 | Материал ярма | 20CrMnTi | Forged Alloy |
| ТС-22 | Обработка поверхности | Yellow Zinc Passivation | Anti-Rust |
| ТС-23 | Динамическое равновесие | G6.3 | Precision Grade |
| ТС-24 | Рабочая температура | от -20°C до +60°C | All-Season |
| ТС-25 | Вес (приблизительно) | 18.5 kg | With CV Joint |
| 26 | Запорный механизм | Collar Lock (Ball) | Быстросъемный |
| 27 | Гарантия | 1 год | Manufacturer Defect |
| 28 | Согласие | CE / EN 12965 | EU Safety Standards |
| 29 | Источник | Ever-Power Mfg. | Independent OEM |
Optimized for Dutch Crop Protection
The Netherlands has some of the strictest pesticide regulations in the world. Drift reduction classes (Driftreductieklassen) require sprayers to operate under precise pressures and boom heights. A vibrating PTO shaft can disrupt the boom stability system (balans), causing the spray height to fluctuate and risking drift.
1. The “Tracking Drawbar” Challenge
Many Dutch sprayers (Agrifac, Dubex) use steering axles or tracking drawbars to follow the tractor tracks perfectly in potato ridges. This geometry often creates sharp angles for the PTO shaft. Our 80° CV Joints are designed to run smoothly even when the drawbar is fully articulated, ensuring you don’t damage the crops or the driveline.
2. Chemical Resistance
Sprayers work with aggressive chemicals. Overspray can land on the PTO guard. Standard PVC guards can become brittle and crack when exposed to certain herbicides and UV light. Our HDPE Safety Guards are chemically stabilized to resist embrittlement, ensuring they remain safe and compliant with Dutch Arbo standards for years.
Compatibility with Major Sprayer Brands
We supply replacement drivelines for the leading brands used in the Benelux region. Whether you run a high-tech Agrifac, a robust Dubex, a specialized Мункхоф или KWH orchard sprayer, or a John Deere trailed unit, we have the fitment.
Our shafts are dimensionally and functionally interchangeable with:
- Вальтершайд (GKN): WWE Series (Wide Angle) replacements.
- Компания Comer Industries: CV Series (CVJ) replacements.
- Бондиоли и Павези: SFT S8 / S6 CV replacements.
Case Study: Tulip Farming in the Polder
Задача: A tulip bulb grower in the Noordoostpolder was using a front-tank/rear-sprayer combination. The PTO shaft driving the rear pump passed under the tractor hitch. When crossing ditches or rough headlands, the shaft angle became extreme, causing the safety guard to bind and tear.
Диагноз: The standard CV shaft had a bulky guard cone that interfered with the tractor’s drawbar during extreme articulation.
Решение: Мы поставили Series 6 CV Shaft with a “Short Cone” Design. The compact guard geometry provided better clearance around the hitch.
Результат: The guard’s tearing stopped. The operator could navigate the rough ditch crossings without disengaging the PTO, maintaining tank agitation, and preventing the heavy chemicals from settling. This improved the consistency of the spray mixture across the entire field.
Spare Parts & Customization
Spraying windows is short. If a shaft breaks, you need parts now. We stock critical components for rapid delivery to Rotterdam and beyond:
- CV Repair Kits: Center balls, disks, and double yokes.
- Guard Cones: Standard and Short versions for clearance.
- Cross Kits: With 50-hour grease intervals.
- Profile Tubes: Star and Lemon profiles cut to size.
The Heart of the Sprayer: Agricultural Gearboxes
В то время как вал отбора мощности передает мощность, Сельскохозяйственная коробка передач is the component that drives the fan (for air-blast sprayers) or the pump. In orchard and vineyard sprayers (nevelspuiten), the gearbox is critical for generating the air volume needed to penetrate the canopy.
At EVER-POWER, we manufacture the gearboxes that pair perfectly with our PTO shafts. We understand that fan efficiency is directly linked to gearbox performance.
Specific Gearbox Applications for Sprayers
1. Fan Drive Gearboxes (Speed Multipliers)
Orchard sprayers use large axial fans to blow the mist into the trees. These fans need to spin fast (often 1800-2200 RPM), but the tractor PTO only spins at 540 RPM. This requires a 2-Speed Multiplier Gearbox with a neutral position.
Задача: Inertia. A heavy fan acts like a flywheel. If you disengage the PTO abruptly, the fan keeps spinning and can destroy the gearbox gears.
Решение: Our Fan Drive Gearboxes feature an integrated Обгонная муфта (свободный ход) inside the gearbox or on the input shaft. This allows the fan to spin down naturally, protecting the driveline from torque spikes.
2. Pump Drive Reduction
Some piston-diaphragm pumps require a specific RPM that differs from the PTO speed. We supply reduction gearboxes that mount directly to the pump, ensuring it runs at its optimal efficiency curve.
3. The “Wet Environment” Seal
Sprayers operate in a mist of water and chemicals. If moisture enters the gearbox, the oil emulsifies and bearings fail.
The EVER-POWER Advantage: Мы используем Double-Lip Viton Seals on all shafts. Viton resists chemical degradation, and the double lip keeps oil in and water out. Additionally, we use stainless steel breather plugs that prevent water ingress during high-pressure washing.
Seamless Integration
We machine our gearbox input shafts to match our PTO yokes perfectly (1 3/8″ Z6). This ensures a tight, vibration-free fit that protects the delicate pump diaphragms from harmonic resonance.
Часто задаваемые вопросы
If you can hear a “knocking” sound when you turn the tractor while the PTO is running, you need a CV shaft. That noise is the U-joints fighting the angle change. Installing a CV shaft will silence the noise and protect your pump from destructive vibration.
Yes, the CV head (the double yoke assembly) is replaceable. However, it requires special tools to center the ball mechanism correctly. We sell complete CV heads that you can weld or pin onto your existing profile tube, or we can supply the complete half-shaft.
CV joints have a central centering ball that needs frequent lubrication. We recommend greasing the center ball and the cross kits every 8 hours of operation. Neglecting the center ball is the #1 cause of CV failure.
Absolutely. We have efficient logistics partners serving the Benelux region. We can ship spare parts or complete shafts to logistics hubs in Rotterdam or directly to your farm address, ensuring you stay operational during the critical spraying season.
