Udviklet til Norfolk Broads, Scottish Lochs og britiske vandveje
The “Silent Heart” of Wetland Management
In the relentless environment of aquatic weed harvesting—where Lemna minor (duckweed) and the invasive Hydrocotyle ranunculoides (floating pennywort) can stall a 10-tonne machine—the conveyor gearbox is the critical failure point. At EVIGTIG KRAFT, we don’t just build gearboxes; we engineer torque transmission solutions that withstand the corrosive reality of the UK’s waterways.
Our specialised conveyor gearboxes are designed to drive the front pick-up conveyors and rear storage belts of aquatic weed harvesters. Unlike standard agricultural gearboxes designed for dry land, these units feature triple-lip sealing systems to prevent water ingress even when submerged during deep cutting cycles. They are the preferred replacement choice for maintenance teams operating on the River Thames, the Fenlands, and commercial fisheries across the British Isles.
Teknisk specifikationsmatrix
| Parameter | Specifikationsværdi | Standard/Noter |
|---|---|---|
| Nominelt udgangsmoment | 850 Nm – 2,400 Nm | Depending on series |
| Ratio Range | 15:1 til 60:1 | Tilpasselig |
| Indgangshastighed (maks.) | 1.500 omdr./min. | Hydraulic motor direct |
| Husmateriale | Duktilt jern QT450-10 | ASTM A536 Grade 65-45-12 |
| Akselmateriale | 20CrMnTi legeret stål | Carburised & Quenched |
| Indgangsakseltype | Ø25mm Keyed / SAE A 2-Bolt | Hydraulic Flange mount |
| Udgangsakseltype | Ø35mm Hollow Bore | DIN 5480 Spline option |
| Servicefaktor | 1.8 – 2.2 | AGMA Klasse II |
| Termisk klassificering | 14 kW | Without cooling fins |
| Oliekapacitet | 1.2 Litres | Stænksmøring |
| Vægt (tør) | 28,5 kg | Excluding hydraulic motor |
| Malingbelægning | Epoxyprimer + PU-toplak | C5-M Marine Grade |
| Forseglingstype | Double Lip Viton (FKM) | Keep mud out/Oil in |
| IP-klassificering | IP67 | Submersible up to 1m |
| Støjniveau | < 75 dB(A) | På 1 m afstand |
| Driftstemperatur | -20°C til +90°C | All-season UK capability |
| Effektivitet | 94% – 96% | Bevel-Helical config |
| Lejelevetid (L10) | > 15.000 timer | Heavy Duty Tapered Roller |
| Vibrationsgrænse | 4,5 mm/s RMS | ISO 10816-1 |
| Modreaktion | 8 – 12 bueminutter | Standard precision |
| Monteringsposition | Universal (M1-M6) | Breather plug relocation req. |
| Smøremiddeltype | Synthetic PG 220 / Bio-Oil | Biodegradable compatible |
| Nøglesporstandard | DIN 6885/1 | JS9 Tolerance |
| Shock Load Capacity | 250% of Nominal | For rock/debris impact |
| Åndedrætstype | Pressure Compensated | Waterproof Gore-Tex® membrane |
| Udgangsflange | IEC Standard | Valgfri |
| Axial Load (Max) | 12.000 N | On output shaft |
| Radial Load (Max) | 18.500 N | At shaft center |
| Korrosionstest | 720 Hours Salt Spray | ASTM B117 |
| Garanti | 18 måneder | Parts & Labour |
The Anatomy of Propulsion
The conveyor gearbox on an aquatic harvester is typically mounted directly to the head pulley shaft of the front conveyor belt. Its primary function is speed reduction: converting the high-speed hydraulic motor input (typically 500-1000 RPM) into a high-torque, low-speed rotation (typically 30-60 RPM) required to pull heavy, water-logged vegetation mats out of the water.
Crucially, this gearbox acts as a “torque multiplier.” When a harvester hits a dense patch of Elodea canadensis (Canadian pondweed), the resistance spikes instantly. Our gearbox internals are hardened to absorb this shock load without shearing gear teeth, ensuring the belt continues to move even under maximum load.
Operational Scenario Adaptation
UK waterways present unique challenges. In the shallow, silt-heavy Norfolk Broads, gearboxes are frequently splashed with abrasive sandy water. To combat this, EVER-POWER units feature:
- Cassette Seals: A multi-stage barrier that spins with the shaft, flinging mud away before it reaches the sealing lip.
- Closed-Loop Breathers: Preventing moist air intake during cooling cycles, eliminating internal condensation—the #1 killer of bearings in aquatic environments.
- Bio-Oil Ready: Seals and gaskets tested for compatibility with biodegradable hydraulic fluids (HEES/HEPR), a mandatory requirement for many Environment Agency contracts.
The EVER-POWER Advantage: Beyond the Datasheet
*Disclaimer: All competitor names mentioned (e.g., Comer, Bondioli & Pavesi, Omni) are for reference purposes only. EVER-POWER parts are designed to be compatible replacements but are not original equipment from these manufacturers.
Generic “Agri-Standard”
- Standard NBR seals (fail at >80°C)
- Single coat paint (rusts in 6 months)
- Standard vent plugs (suck in water)
- Cast iron often porous
EVER-POWER Aquatic Series
- Viton (FKM) Double-Lip Seals
- Marine Grade Epoxy pulverlakering
- Pressure-Compensated Bladder Breathers
- Vacuum Impregnated Castings (Leak-proof)
UK Regional & Compliance Intelligence
Safety & Environmental Regulations
Operating in UK waters requires strict adherence to environmental standards. Our gearboxes are fully compliant with:
- Forordninger om levering af maskiner (sikkerhed) fra 2008: Ensuring all rotating parts are shielded and marked.
- Environment Agency (EA) Pollution Prevention: Our “Dry-Sump” design option minimizes oil volume, reducing risk during catastrophic failure.
- Biodegradability Standards: Compatible with Panolin and Total bio-lubricants mandated for SSSI (Site of Special Scientific Interest) operations.
Regional Seasonality
The Fenlands (Lincolnshire/Cambridgeshire): High demand for parts during the “summer cut” (June-August) when emergent reeds are thickest. Our UK distribution hub ensures 24-hour dispatch to PE and CB postcodes.
Scottish Lochs: Cooler temperatures require lower viscosity oil (ISO VG 150) to prevent cold-start drag. We ship pre-filled units customized for Scottish operational latitudes.
Engineer’s Notebook: Design Philosophy
“When we redesigned the Model 350 gearkasse for the UK market, we stopped looking at tractors and started looking at submarines. The biggest issue wasn’t torque—it was thermal breathing. A gearbox working hard heats up; when it hits the cold water of a canal, it cools rapidly, creating a vacuum that sucks in river water through standard seals.
Our solution was the ‘Eco-Vent’ expansion chamber. Instead of venting to the atmosphere, the expanding air moves into a flexible bladder. The gearbox is effectively a sealed system. We also swapped the standard grey iron for Ductile Iron (QT450), reducing weight by 15% while increasing shock resistance—vital when the cutter bar hits a submerged shopping trolley in an urban canal.”
— Dr. H. Chen, Lead Drivetrain Engineer, EVER-POWER
Innovation Spotlight: “Self-Cleaning Output”
We introduced a labyrinth shield on the output shaft that mechanically shreds winding weeds before they can strangle the oil seal. A simple mechanical fix for a massive maintenance headache.
Field Reports: Solutions in Action
Case 1: The Fenland Drainage Crisis (UK)
Klientens smertepunkt: “We were burning through a gearbox every 3 weeks on our Truxor machines. The fine silt from the dykes was grinding the bearings to dust.”
EVER-POWER-løsning: “We deployed our ‘Severe Duty’ variant with a triple-lip cassette seal and a tungsten-carbide coated shaft sleeve. Result: The test unit has been running for 14 months without a seal failure.”
Case 2: The Water Hyacinth Wall (Nigeria)
Klientens smertepunkt: “The hyacinth is so heavy here in Lagos lagoon. The stock gearboxes overheat and seize.”
EVER-POWER-løsning: “We upsized the heat dissipation fins by 40% and switched to a synthetic ISO VG 460 oil to maintain film thickness at high temperatures. Temperatures dropped by 18°C.”
Case 3: The Urban Canal Cleanup (Netherlands)
Klientens smertepunkt: “We operate near Amsterdam. Noise is a huge issue for residents.”
EVER-POWER-løsning: “We utilized precision-ground helical gears instead of standard spur gears. This reduced operational noise by 6dB, allowing the team to start work at 7 AM without noise complaints.”
⚠️ When to Replace Your Gearbox
- The “Grind”: Metallic groaning under load indicates bearing pitting.
- Mælkeagtig olie: If the sight glass looks like latte, water has breached the seals. Immediate replacement recommended to prevent shaft scoring.
- Overdreven øjenvippe: If the conveyor belt hesitates before moving, the internal keyways or gear teeth are worn.
- Heat Spikes: If the casing is too hot to touch (>80°C) during normal weeding, internal friction is critical.
⚙️ Compatible Replacements
We stock drop-in replacements for major harvester brands seen in the UK:
- Conver (C-Series Harvesters)
- Truxor (Amphibious tool carriers)
- Berky (Weed Harvesters)
- Aquarius Systems
*Note: Ensure you measure the shaft diameter and bolt pattern before ordering. Our engineers can cross-reference via photo.
Komplet drivlinje: PTO-aksler og komponenter
En gearkasse er kun så pålidelig som den aksel, der driver den. For traktormonterede akvatiske ukrudtsklippere (PTO-drevne) er forbindelsen mellem traktoren og redskabet afgørende.
Vidvinkel PTO-aksler
Uundværlig for knækstyrede høstmaskiner, da den muliggør kraftoverførsel i vinkler på op til 80°.
Forskydningsboltbegrænsere
Offerbeskyttelse. Hvis mejetærskeren rammer en undersænket træstamme, knækker bolten og skåner gearkassen.
Hydrauliske koblinger
Rustfrit stål lynkoblinger til hydrauliske transportbåndsdrev.
Transportbåndskæder
Rustfrit stål eller galvaniserede netbånd specielt til lastning af akvatisk ukrudt.
Ofte stillede spørgsmål
Hvordan finder jeg den rigtige udskiftningsgearkasse til min Truxor-høster?
Det er enklere end du tror. Først skal du tjekke ID-mærket på din nuværende enhed for et forhold (f.eks. 1:20). Mål derefter udgangsakslens diameter (normalt 25 mm eller 35 mm) og monteringsboltmønsteret. Send os et billede, så kan vores teknikere normalt identificere det med det samme.
Kan I hurtigt sende erstatningsgearkasser til Storbritannien?
Absolut. Vi forstår, at nedetid i skæresæsonen koster penge. Vi tilbyder ekspresluftfragt, der kan bringe en enhed til London Heathrow eller Manchester inden for 3-5 arbejdsdage.
Er jeres gearkasser kompatible med bionedbrydelig hydraulikolie?
Ja, alle vores gearkasser i akvatisk serie er udstyret med Viton-tætninger og specialpakninger, der modstår den aggressive natur af bioolier som Panolin, hvilket sikrer, at du overholder de britiske miljøagenturers regler.
Hvorfor bliver gearkassen på min høstmaskine overophedet?
Overophedning skyldes ofte to ting: overfyldning af olie (hvilket forårsager skumdannelse og dannelse af skum) eller en tilstoppet udluftningsprop. I vandmiljøer kan alger danne sig fast til udluftningsventilen og dermed sætte trykket på oliehuset. Kontroller oliestanden, og rengør udluftningsventilen!
Tilbyder I specialdesignede gearkasser til nye maskinbygninger?
Ja, vi elsker skræddersyede projekter. Uanset om du bygger en ny, autonom ukrudtsdrone eller en kraftig pram, kan vores R&D-team designe en kasse med specifikke forhold og monteringspunkter, der passer til dine CAD-tegninger.
Hvorfor stoppe ved gearkassen?
EVER-POWER er din komplette forsyningskædepartner for landbrugs- og vandmaskiner. PTO-aksler og hydrauliske cylindre til transportkæder og tandhjul, samler vi dit indkøb i én pålidelig forsendelse.
Fabriks direkte tilpasning
Har du brug for en længere aksel? En specifik RAL-farve, der matcher din flåde? Vores fleksible produktionslinje muliggør tilpasning af standardadaptere med en MOQ på 1.
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