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.
Στην EVER-POWER, σχεδιάζουμε 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.
From the Engineer’s Notebook:
“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.
| Αναγνωριστικό παραμέτρου | Τεχνικό χαρακτηριστικό | Τιμή προδιαγραφών | Σημείωση Εφαρμογής |
|---|---|---|---|
| TS-01 | Ταξινόμηση Σειράς | Series 4 / Series 6 | Pump Drive Optimized |
| TS-02 | Ονομαστική ροπή (540 σ.α.λ.) | 780 Nm | Continuous smooth load |
| TS-03 | Μέγιστη ροπή σοκ | 1,250 Nm | Start-up spike protection |
| TS-04 | Ονομαστική ισχύς (540 σ.α.λ.) | 35 kW / 47 HP | @ 5° Joint Angle |
| TS-05 | Ονομαστική ισχύς (1000 σ.α.λ.) | 54 kW / 74 HP | @ 5° Joint Angle |
| TS-06 | Σφήνα τρακτέρ | 1 3/8″ – 6 Spline (Z6) | DIN 9611 Standard |
| TS-07 | Υλοποίηση Spline | 1 3/8″ – 6 Spline (Z6) | Standard Pump Input |
| TS-08 | Προφίλ σωλήνα | Λεμόνι / Αστέρι | Low-Friction Telescoping |
| TS-09 | Πάχος εσωτερικού σωλήνα | 4.0 mm | Cold Drawn Steel |
| TS-10 | Πάχος εξωτερικού σωλήνα | 3.2 mm | Cold Drawn Steel |
| TS-11 | Μήκος τηλεσκοπικής κοπής (ελάχ.) | 810 χιλιοστά | Compressed |
| TS-12 | Μήκος τηλεσκοπικής κίνησης (μέγιστο) | 1,210 mm | Working Extension |
| TS-13 | Γωνία αρθρώσεων CV | 80 Degrees | Wide Angle (Both Ends Option) |
| TS-14 | Τυπική γωνία άρθρωσης | 25 Degrees | If a single CV |
| TS-15 | Cross Kit (CV Side) | 27.0 x 100.0 mm | Center Plate Design |
| TS-16 | Cross Kit (Std Side) | 27.0 x 74.6 mm | Standard Series 4 |
| TS-17 | Συμπλέκτης ασφαλείας | None / Shear Bolt | Pump Protection |
| TS-18 | Υλικό προστασίας | HDPE (Κίτρινο) | UV & Chemical Resistant |
| TS-19 | Ρουλεμάν προστασίας | Nylon 66 | Easy Rotation |
| TS-20 | Διάστημα λίπανσης | 8 Hours / 50 Hours | Standard / Extended |
| TS-21 | Υλικό ζυγού | 20CrMnTi | Forged Alloy |
| TS-22 | Επιφανειακή επεξεργασία | Yellow Zinc Passivation | Anti-Rust |
| TS-23 | Δυναμική ισορροπία | G6.3 | Precision Grade |
| TS-24 | Θερμοκρασία λειτουργίας | -20°C έως +60°C | All-Season |
| TS-25 | Βάρος (περίπου) | 18.5 kg | With CV Joint |
| 26 | Μηχανισμός κλειδώματος | Collar Lock (Ball) | Γρήγορη απελευθέρωση |
| 27 | Εγγύηση | 1 έτος | Manufacturer Defect |
| 28 | Συμμόρφωση | CE / EN 12965 | EU Safety Standards |
| 29 | Προέλευση | EVER-POWER Κατασκευαστής | 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 Μούνκχοφ ή KWH orchard sprayer, or a John Deere trailed unit, we have the fitment.
Our shafts are dimensionally and functionally interchangeable with:
- Βάλτερσαϊντ (GKN): WWE Series (Wide Angle) replacements.
- Βιομηχανίες Comer: CV Series (CVJ) replacements.
- Μποντιόλι και Παβέζι: SFT S8 / S6 CV replacements.
Case Study: Tulip Farming in the Polder
Η Πρόκληση: 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.
Η διάγνωση: The standard CV shaft had a bulky guard cone that interfered with the tractor’s drawbar during extreme articulation.
Η Λύση: Παρέχαμε ένα Series 6 CV Shaft with a “Short Cone” Design. The compact guard geometry provided better clearance around the hitch.
Το Αποτέλεσμα: 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
While the PTO shaft transmits the power, the Γεωργικό κιβώτιο ταχυτήτων 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.
Η Πρόκληση: Inertia. A heavy fan acts like a flywheel. If you disengage the PTO abruptly, the fan keeps spinning and can destroy the gearbox gears.
Η Λύση: Our Fan Drive Gearboxes feature an integrated Συμπλέκτης υπερλειτουργίας (ελεύθερος τροχός) 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: Χρησιμοποιούμε 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.
Συχνές ερωτήσεις
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.
