Professional-Grade Flail Mower Gearbox — Trusted by Farmers Across Australia
Productive grass cutting starts with dependable power transmission. The Flail Mower gearbox we manufacture is a precision instrument — not a commodity part. Sitting atop the mower deck, the flail mower gearbox transfers PTO power to a horizontal rotor studded with swinging flail blades. The gear reduction delivers high rotor tip speed for clean cutting of grass, brush, and light woody material.
From the hardened gear teeth to the heavy-duty shaft seals, every element is selected and assembled to deliver thousands of hours of trouble-free service. Australian farmers operating in dust, heat, mud, and moisture rely on this gearbox to perform consistently throughout the most demanding seasons.
🛠 Flail Mower Gearbox Specifications at a Glance
Dati chiave sulle prestazioni per il nostro agricultural gearbox for flail mowerAvete bisogno di specifiche diverse? Produciamo secondo le vostre precise esigenze.
Dati relativi a ingranaggi e rapporti di trasmissione
| Maximum Continuous Torque |
140 – 500 Nm |
Peak torque: 150% of continuous |
| Output Speed Range |
146 – 2447 RPM |
Depends on selected ratio |
| Sistema di verniciatura |
2-coat industrial |
Opzione in acciaio inox per ambienti corrosivi. |
| Coppia massima in ingresso |
800 Nm |
Con protezione da sovraccarico |
| Quality Certification |
ISO 9001:2015 |
Audit reports available |
Valori di potenza e coppia
| Noise at 1m Distance |
≤ 75 dB(A) |
Low-noise profiles optional |
| Primary Bearings |
Needle Roller Bearings |
Premium bearing upgrades |
| Net Weight |
14 kg |
Varies by configuration |
| Input Shaft Spline |
6-spline (1-3/8″) / 21-spline (1-3/4″) |
20-spline, 8-spline on request |
| Tipo di albero di uscita |
Flanged output |
Configurazioni di output personalizzate |
Costruzioni e materiali
| Distanza dal centro |
110 mm |
Per rapporto di trasmissione |
| Capacità del petrolio |
3.0 litres |
Pozzetto di raccolta sovradimensionato disponibile |
| Gear Face Width |
25 mm |
Wider for high-torque |
| Input Shaft Diameter |
40 mm |
Custom diameters |
| Tipo di ingranaggio primario |
Herringbone Gears |
Profili dentali personalizzati su richiesta |
Tenuta, lubrificazione e ambiente
| Tipo di tappo di scarico |
Quick-drain valve |
Opzione porta di campionamento |
| Metodo di lubrificazione |
Lubrificazione a nebulizzazione |
Lubrificazione forzata per cicli ad alto carico |
| Ambient Temperature Range |
-30°C to +105°C |
Arctic / tropical variants |
| Standard di progettazione |
Certificazione ISO 6336 + FEA (analisi agli elementi finiti) verificata. |
Certificato da terze parti |
| Breather / Vent |
Screw-in breather cap |
All-weather types |
Contattaci team di ingegneri for a detailed specification sheet tailored to your flail mower model and grass cutting conditions.
✅ Our Flail Mower Gearbox vs Budget Alternatives
Investing in a quality gearbox is the smartest upgrade you can make to your flail mower. Here is the evidence:
| Attribute |
Standard Replacement |
Our Premium-Grade Flail Mower Gearbox |
| Spare Parts |
Parts catalogue unavailable |
Complete rebuild kits off-the-shelf |
| Efficienza operativa |
88-92% — noticeable temperature rise during operation |
96-98% — minimal heat generation, lower fuel costs |
| Sealing System |
Paper gaskets and basic lip seals |
Triple-barrier seal: spring-loaded lip + V-ring + external slinger |
| Progettazione di alloggi |
Welded steel fabrication, dimensional inconsistency |
Precision die-cast housing, vacuum-impregnated to eliminate micro-porosity |
| Gear Material & Treatment |
Grey iron gears, no heat treatment |
18CrNiMo7-6 aerospace-grade steel, shot-peened root fillets for fatigue life |
| Protezione superficiale |
No primer — surface rust within weeks |
Verniciatura elettroforetica catodica + verniciatura a polvere, test in nebbia salina di 1000 ore |
Farmers who switch to our Flail Mower gearbox report that the investment pays for itself within the first season through eliminated downtime and reduced maintenance. Quality is an investment, not an expense.
🔧 Power Pathway: How Your Flail Mower Gearbox Works
Nostro Flail Mower agricultural gearbox is a specialized power transmission unit for grass cutting:
▶ Ingresso potenza PTO
Power enters through a precision-machined splined coupling accepting 540 RPM (1-3/8″) or 1000 RPM (1-3/4″) PTO output. The input shaft rides on spherical roller bearings selected specifically for the load profile of grass cutting applications.
▶ Riduzione del rapporto di trasmissione e moltiplicazione della coppia
The gear train employs precision-matched herringbone gears manufactured from carburized alloy steel. The profile is FEA-optimized to distribute contact stress across the full tooth face. Sitting atop the mower deck, the flail mower gearbox transfers PTO power to a horizontal rotor studded with swinging flail blades. The gear reduction delivers high rotor tip speed for clean cutting of grass, brush, and light woody material. Typical mechanical efficiency exceeds 96%.
▶ Output to Flail Rotor
The transformed power exits through the output shaft to the flail mower’s working mechanism, specifically driving the flail rotor for core grass cutting function. The output connection is engineered for vibration-free, backlash-free transmission at the point of work.
▶ Lubrificazione e protezione
The die-cast aluminum housing acts as a heat sink with cooling fins for convective cooling. Internal splash lubrication with SAE 80W-90 GL-5 ensures all surfaces maintain a protective oil film. Quad-Ring Seals at each shaft opening block contaminants while retaining lubricant.
🔁 Direct Interchange — Flail Mower Gearbox Compatibility
All manufacturer names and model numbers below are property of their respective owners, cited for cross-reference only. No affiliation or endorsement is implied.
Confirmed compatible flail mower models by manufacturer:
Manitou — G2.6, J-338, Mk-II ✅ Verified
Bobcat — 814Z, G5.8, Series 548 ✅ Verified
Mitsubishi — Model 9206, G-652, G3.0 ✅ Verified
Deutz-Fahr — 497S, Series 560, Model 6566 ✅ Verified
Landini — Type 38D, C-771, G5.5 ✅ Verified
Valtra — 886X, Series 693, Type 20H ✅ Verified
Kit di riparazione e ricambi
⚙ Cuscinetti
🔒 Foche
⚙ Ingranaggi
🔧 Alberi
🎯 Flail Mower Gearbox Sizing Guide — Get the Right Fit First Time
Getting the right gearbox for your mowing implement requires confirming these seven parameters before you order. Our engineering team can help you through each step if needed.
1. Rotation Direction
Determine whether the flail rotor on your flail mower requires clockwise or counter-clockwise output when viewed from the drive end.
Importance: Incorrect rotation direction will damage the implement or produce no useful work.
2. Existing Gearbox Identification
Annotare la marca, il numero di modello e gli eventuali codici dei pezzi riportati sulla targhetta del cambio da sostituire.
Importance: Speeds up the matching process and ensures dimensional compatibility with your mowing implement.
3. Output Shaft Type
Identify the coupling type on your flail mower — keyed, splined, flanged, or hollow bore.
Importanza: Le uscite non corrispondenti richiedono costosi adattatori e introducono potenziali punti di guasto.
4. Mounting Bolt Pattern
Measure the bolt hole positions, centre distances, and overall envelope on your flail mower’s gearbox mounting flange.
Importanza: Garantisce un'installazione diretta tramite bulloni, senza necessità di modifiche o piastre adattatrici.
5. Torque Demand
Calculate the peak torque your grass cutting application generates — including shock loads from obstacles or material variations.
Importanza: Il cambio deve essere in grado di gestire la coppia massima senza attivare la protezione da sovraccarico durante il normale funzionamento.
6. Tractor PTO Speed
Verifica le specifiche della presa di forza del tuo trattore: lo standard è di 540 giri/minuto o 1000 giri/minuto.
Importanza: determina la dimensione della scanalatura dell'albero di ingresso e la base per il calcolo del rapporto.
7. Required flail rotor Speed
Refer to your flail mower manufacturer’s manual for the recommended flail rotor operating speed.
Importance: Together with PTO speed, this defines the exact gear ratio your gearbox needs.
💡 Consiglio da professionista: Suggerimento per l'ordine: se si sostituisce un riduttore esistente, misurare almeno i diametri degli alberi di ingresso/uscita e la disposizione dei fori di fissaggio. Con queste tre dimensioni, il nostro team sarà in grado di individuare il componente corretto dal nostro catalogo o di progettare una soluzione personalizzata.
🔧 Technician’s Installation Manual — Flail Mower Gearbox
Follow these instructions for a successful installation of your new Flail Mower gearbox. Correct installation is critical for achieving maximum service life and warranty coverage.
Step 1: Drain & Document Old Gearbox
Locate the drain plug on the existing gearbox and position a catch container underneath. Remove the drain plug and allow all oil to drain completely — inspect the oil for metal particles or discolouration that may indicate internal wear. Record the old gearbox model number, mounting bolt size, and shaft dimensions for reference.
Step 2: Fill With Lubricant
Remove the fill plug and slowly add the recommended gear oil until it reaches the level indicator. Use the lubricant grade specified in the gearbox documentation (typically SAE 80W-90 GL-5 or equivalent). Replace the fill plug and hand-tighten, then snug with a wrench. Verify the breather cap is clean and unobstructed.
Step 3: Prepare the Mounting Surface
Clean the mounting flange on the flail mower frame with a wire brush and solvent, removing all old sealant, rust, and debris. Inspect the mounting surface for cracks, stripped threads, or warping. Chase any damaged bolt threads with a tap. Apply a thin film of anti-seize compound to the mounting face if specified.
Step 4: Connect Output to flail rotor
Attach the gearbox output shaft to the flail mower’s flail rotor drive coupling. For keyed connections, align the keyway and slide the coupling on, then secure with the retaining bolt and torque to specification. For splined outputs, apply anti-seize to the splines and verify full engagement before locking.
Step 5: Safety Preparation
Park the tractor on firm, level ground. Engage the parking brake and place wheel chocks. Turn off the engine and remove the key. Disconnect the PTO shaft from the flail mower. Allow all components to cool completely before touching. Wear appropriate PPE including gloves and safety glasses.
Step 6: Remove Old Gearbox
Disconnect the PTO driveline from the gearbox input shaft. Support the gearbox weight with a floor jack or overhead hoist (typical weight: 15-70 kg depending on model). Remove all mounting bolts in a criss-cross pattern to relieve clamping stress evenly. Carefully lower the old gearbox and set it aside.
Step 7: Test Run & Break-In
Start the tractor and engage the PTO at low RPM (approximately 300 RPM). Listen carefully for any grinding, whining, knocking, or clicking sounds. Run at low speed for 15-20 minutes, monitoring the gearbox housing temperature by hand (carefully). Check for oil leaks at all seals and the mounting interface. Gradually increase to full operating speed.
⚠ Importante: Always consult the specific installation manual shipped with your Flail Mower gearbox for model-specific torque values and procedures.
🚧 Symptom-Cause-Fix Guide for Your Flail Mower Gearbox
Use this diagnostic reference to identify and resolve common Flail Mower gearbox issues in the field. Most problems can be diagnosed and addressed without removing the gearbox from the flail mower.
⚠ Il cambio emette un rumore metallico sordo all'innesto della presa di forza
Probable Cause: Il meccanismo di protezione da sovraccarico è allentato
Recommended Action: A clunking sound specifically on PTO engagement (but not during operation) usually indicates driveline lash — check driveline telescoping tube for wear. If the clunk occurs during operation, it may indicate excessive gear backlash from internal wear. Have the gearbox inspected if the sound is progressive.
⚠ Abnormal Grinding or Whining Noise
Probable Cause: Foreign object trapped in gear mesh
Recommended Action: Drain and inspect oil for metal particles. Refill with correct grade. If noise persists after oil change, bearing or gear inspection is required. Contact support for rebuild guidance.
⚠ L'albero di uscita smette di girare mentre l'albero di ingresso ruota
Probable Cause: frattura interna della diafisi
Recommended Action: Check the overload protection device first — this is the most likely cause if the gearbox was recently subjected to a sudden overload. Replace the shear bolt or reset the slip clutch per the manual. If overload protection is intact, the gearbox has internal damage and requires professional service.
⚠ Vibrazioni eccessive durante il funzionamento
Probable Cause: Unbalanced flail rotor or damaged output coupling
Recommended Action: First check all mounting bolt torques — vibration frequently loosens fasteners, which then amplifies the vibration. Next, inspect the PTO driveline U-joints for wear or binding. Verify driveline angles are within specification. Finally, check the output coupling to the flail rotor for wear or damage.
⚠ Il cambio si surriscalda eccessivamente
Probable Cause: Tipo di olio non corretto (troppo denso o troppo fluido per le condizioni).
Recommended Action: Check oil level and grade against the specification. Clean all debris from the housing exterior — especially the cooling fins. If the flail mower is being operated at or above the gearbox’s rated power, reduce forward speed or PTO load. Consider upgrading to synthetic gear oil for improved thermal performance.
If any issue cannot be resolved with the actions above, contact our technical support team for expert diagnosis. We can arrange remote troubleshooting or dispatch a replacement unit for critical breakdown situations.
📝 From the Field: Australian Farmers Review the Flail Mower Gearbox
Our agricultural gearboxes are field-proven across every Australian state and territory. Below are documented case studies from recent Flail Mower gearbox installations.
📍 Case #1: Mackay, QLD
| Cliente: |
Derek Whitfield — commercial grass cutting contractor |
| Posizione: |
Mackay, QLD |
| Dimensioni dell'azienda agricola: |
3500 acres |
| Applicazione: |
Flail Mower gearbox for flail mower — grass cutting |
| Motivo dell'acquisto: |
Replace failed OEM gearbox to restore flail mower for the upcoming season |
“Our flail mower operates in extremely dusty conditions and we were going through gearboxes every season. This one has survived 4 seasons and is still running perfectly. The sealing is clearly superior to what we had before.”
— Derek Whitfield, Mackay, QLD
Jack Thornton — Mildura, VIC
Operazione: cooperative farming group | Misurare: 1000 acres | Utilizzo: Flail Mower gearbox for grass cutting
Motivo dell'acquisto: Emergency mid-season replacement after catastrophic original gearbox failure
“Quality comparable to European OEM units at half the price point. The machining is clean, the paint is durable, and the gears are noticeably smoother than the Chinese-made unit it replaced. Recommended to three other farmers already.”
📍 Griffith, NSW commercial grass cutting contractor — 8000 acres
Cliente: Luke Anderson | Applicazione: Flail Mower gearbox — grass cutting
Scopo: Costruzione di un nuovo equipaggiamento: specifica del cambio aftermarket come miglioramento OEM
“We stress-test our equipment in ways that would void most warranties. This gearbox has handled everything we’ve thrown at it — continuous 12-hour shifts — without complaint.”
📍 Case #4: Hamilton, VIC
| Cliente: |
Terry Voss — broadacre cropping operation |
| Posizione: |
Hamilton, VIC |
| Dimensioni dell'azienda agricola: |
1000 acres |
| Applicazione: |
Flail Mower gearbox for flail mower — grass cutting |
| Motivo dell'acquisto: |
Retrofit older model flail mower with improved gearbox for extended service life |
“The oil-tight sealing on this gearbox is remarkable. After 1611 hours of operation in muddy conditions, the oil comes out clean at service time. Previous gearboxes always had contaminated oil by the first oil change.”
— Terry Voss, Hamilton, VIC
Ed Pearce — Melbourne, VIC
Operazione: intensive horticultural farm | Misurare: 4000 acres | Utilizzo: Flail Mower gearbox for grass cutting
Motivo dell'acquisto: Aggiornamento da un'unità aftermarket economica che è durata meno di una stagione
“The custom ratio option was a game-changer for our operation. We needed a non-standard output speed that no other supplier could provide. The engineering team designed a solution within a week and it worked perfectly from day one.”
❓ Flail Mower Gearbox FAQ — Everything You Need to Know
🔹 Do you provide technical support after purchase?
Sì, ogni acquisto include l'accesso al nostro team di supporto tecnico per assistenza all'installazione, risoluzione dei problemi, consigli sulla manutenzione e ordinazione dei ricambi. Il supporto è disponibile telefonicamente, via e-mail e tramite il nostro modulo di contatto online. L'assistenza tecnica è gratuita durante e dopo il periodo di garanzia.
🔹 What documentation ships with the gearbox?
Every gearbox ships with: installation manual with torque specifications, lubrication and maintenance schedule, parts diagram with individual part numbers, warranty registration card, and a quality inspection certificate with the unit’s serial number and test results.
🔹 Can this gearbox withstand the shock loads generated during grass cutting?
The gearbox is specifically designed for the dynamic and impact loading characteristic of grass cutting applications. Case-hardened alloy steel gears absorb repetitive shocks, while the optional overload protection (shear bolt or slip clutch) safeguards against catastrophic overload events. The bearing selection and housing rigidity are both matched to flail mower load profiles.
🔹 What does the warranty cover and for how long?
La nostra garanzia completa di 24 mesi copre tutti i difetti di materiali e di fabbricazione, inclusi cuscinetti, ingranaggi, guarnizioni e alloggiamento. È valida a partire dalla data di acquisto ed è supportata dal nostro sistema di gestione della qualità certificato ISO. Sono disponibili programmi di garanzia estesa per ordini all'ingrosso e per flotte.
🔹 Which gear oil do you recommend for Australian conditions?
Per la maggior parte dei climi australiani, l'olio per ingranaggi SAE 80W-90 EP con specifica GL-5 è l'ideale. Nelle regioni tropicali con temperature elevate e prolungate, si consiglia l'olio 85W-140. Per le regioni meridionali con inverni rigidi, l'olio sintetico 75W-90 offre una migliore protezione all'avviamento a freddo. Consultare la scheda delle specifiche dell'olio fornita con il cambio per la raccomandazione definitiva.
🔹 Can I return a gearbox if it does not fit my flail mower?
If you provide your equipment details before ordering and we confirm compatibility, fitment is guaranteed. In the rare event of a compatibility issue, we offer a no-questions-asked exchange or refund on unused gearboxes within 30 days of delivery. Our goal is to match you with the correct gearbox on the first order.
🔹 Is the gearbox suitable for use in organic-certified farming operations?
I nostri riduttori sono componenti meccanici e non contengono sostanze che possano compromettere la certificazione biologica. Tuttavia, è opportuno valutare attentamente la scelta del lubrificante: possiamo consigliare oli per ingranaggi biodegradabili e per uso alimentare, compatibili con gli standard dell'agricoltura biologica in Australia e a livello internazionale.
🔹 Can the gearbox be serviced or rebuilt in the field?
La manutenzione ordinaria (cambio olio, sostituzione guarnizioni, ispezione cuscinetti) può essere eseguita in loco con strumenti standard. Per le revisioni più complesse, forniamo kit di revisione completi contenenti tutti i cuscinetti, le guarnizioni e gli anelli di tenuta. Manuali di assistenza dettagliati e video guide sono disponibili per il download dal nostro portale di supporto.
🔹 What payment and ordering options do you offer?
We accept bank transfer, credit card, and purchase orders from established accounts. For large orders, we offer 30-day payment terms subject to credit approval. Orders can be placed through our website, by email, or by phone. Pro-forma invoices are available for pre-payment arrangements.
🔹 Can the output shaft be customized for my specific flail mower?
Absolutely. We manufacture gearboxes with keyed, splined, flanged, hex, and hollow-bore output shaft configurations. If your flail mower requires a non-standard output size, spline count, or connection type, our engineering team will design and machine it to your exact specifications at no additional lead time for common modifications.
⚙ Build a Reliable Grass Cutting Powertrain
These products are frequently purchased alongside our Flail Mower gearbox by Australian farmers optimizing their grass cutting equipment.
PTO Drive Shaft for Flail Mower
Rugged PTO drive shafts built for grass cutting demands. Standard, wide-angle, and CV joint options. Telescoping tube with nylon liner. Full guard kit included.
View PTO Shafts →
Explore Our Gearbox Range
Multi-machine operators benefit from our comprehensive gearbox catalogue — standardised quality, consolidated shipping, and volume pricing across the full range.
Browse Gearboxes →
⚖ Safety Standards for Flail Mower Equipment in Australia
Operating flail mower equipment in Australia requires compliance with federal and state workplace health and safety legislation. Key requirements for Flail Mower gearbox installations include:
Standards Compliance
| Standard |
Relevance |
| AS/NZS ISO 9001:2015 — Quality Management |
Il nostro stabilimento di produzione è attualmente certificato secondo gli standard internazionali di gestione della qualità. |
| AS 1636 — Agricultural Machinery Safety |
Our gearboxes meet design requirements for agricultural machinery components, including rotating part guarding interfaces. |
| Safe Work Australia PTO Safety Guidelines |
All PTO-driven flail mower equipment must incorporate compliant shaft guarding. Guard-compatible drivelines available. |
State-Level WHS Requirements
- Northern Territory — WHS (National Uniform Legislation) Regulations 2011: applies federal standards to grass cutting operations territory-wide.
- South Australia — WHS Regulations 2012: requires regular inspection of all machinery with rotating drive components.
- Tasmania — WHS Regulations 2012: mandates operator training for all PTO-driven flail mower equipment.
Rete di copertura e distribuzione regionale
Effettuiamo la consegna Flail Mower agricultural gearboxes to every state and territory in Australia. Our logistics network covers major farming regions including the North West Slopes, Hunter Valley, and Central West NSW, the Barossa Valley, the Riverland, and South East SA, and the Riverina, the Murrumbidgee Irrigation Area, and the Liverpool Plains. Whether you operate in a metropolitan fringe area or a remote pastoral station, we ship directly to your property with full tracking and delivery confirmation.
🎯 Your Flail Mower Gearbox Journey Starts Here
With over two decades of experience and 150,000+ gearboxes produced each year, we are one of the most established agricultural gearbox manufacturers serving the Australian market. Our production capabilities include: cmm (coordinate measuring machine) dimensional inspection, precision cnc gear cutting and grinding with sub-micron repeatability, iso 9001:2015 certified quality management with full batch traceability, and much more.
Standard e su misura: realizziamo entrambi
Standard specifications don’t always fit. Our engineering team designs and manufactures custom gearboxes to your drawings, samples, or specifications. From modified OEM replacements to completely new designs for specialised flail mower equipment — we handle it all.
Disegni, campioni, dimensioni, foto: qualsiasi cosa abbiate, inviatecela. Al resto penseremo noi.
🏭 Scopri tutte le nostre capacità →
Il vostro partner di fiducia per soluzioni di riduttori per macchine agricole, sia standard che personalizzate, in Australia e nel mondo.
