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 Agricultural Gearbox

🛠 Flail Mower Gearbox Specifications at a Glance

Key performance data for our agricultural gearbox for flail mower. Need different specs? We manufacture to your exact requirements.

Gear & Ratio Data
Maximalt kontinuerligt vridmoment 140 – 500 Nm Toppmoment: 150% kontinuerligt
Utgångshastighetsområde 146 – 2447 RPM Beror på valt förhållande
Paint System 2-coat industrial Stainless option for corrosive env.
Maximalt ingående vridmoment 800 Nm Med överbelastningsskydd
Kvalitetscertifiering ISO 9001:2015 Revisionsrapporter tillgängliga
Power & Torque Ratings
Buller på 1 m avstånd ≤ 75 dB(A) Lågbrusprofiler som tillval
Primärlager Needle Roller Bearings Premium lageruppgraderingar
Net Weight 14 kg Varies by configuration
Ingående axelspline 6-splines (1-3/8″) / 21-splines (1-3/4″) 20-splines, 8-splines på begäran
Utgående axeltyp Flänsad utgång Anpassade utgångskonfigurationer
Construction & Materials
Centrumavstånd 110 mm Per utväxling
Oljekapacitet 3.0 litres Överdimensionerad sump tillgänglig
Kugghjulsytans bredd 25 mm Bredare för högt vridmoment
Ingående axeldiameter 40 mm Anpassade diametrar
Primary Gear Type Herringbone Gears Custom tooth profiles on request
Sealing, Lubrication & Environment
Drain Plug Type Quick-drain valve Sampling port option
Smörjningsmetod Dimsmörjning Tvingat smörjmedel för höga driftscykler
Omgivningstemperaturintervall -30°C to +105°C Arktiska/tropiska varianter
Designstandard ISO 6336 + FEA verified Tredjepartscertifierad
Breather / Vent Screw-in breather cap All-weather types

Kontakta vår ingenjörsteam 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:

Attribut Standardersättning Our Premium-Grade Flail Mower Gearbox
Spare Parts Parts catalogue unavailable Complete rebuild kits off-the-shelf
Driftseffektivitet 88-92% — noticeable temperature rise during operation 96-98% — minimal heat generation, lower fuel costs
Tätningssystem Papperspackningar och grundläggande läpptätningar Triple-barrier seal: spring-loaded lip + V-ring + external slinger
Bostadsdesign Svetsad ståltillverkning, dimensionell inkonsekvens Precision die-cast housing, vacuum-impregnated to eliminate micro-porosity
Växelmaterial och behandling Grey iron gears, no heat treatment 18CrNiMo7-6 aerospace-grade steel, shot-peened root fillets for fatigue life
Ytskydd No primer — surface rust within weeks Katodisk e-beläggning + pulverlackering, 1000 timmars saltspraytest

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.

Flail Mower application

🔧 Power Pathway: How Your Flail Mower Gearbox Works

Vår Flail Mower agricultural gearbox is a specialized power transmission unit for grass cutting:

▶ Kraftuttagseffekt
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.
▶ Växelreduktion och momentmultiplikation
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.
▶ Smörjning och skydd
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

Ombyggnadssatser och delar

⚙ Lager
🔒 Sälar
⚙ Kugghjul
🔧 Axlar

🎯 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
Record the brand, model number, and any part numbers from the nameplate of the gearbox being replaced.
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.
Importance: Mismatched outputs require costly adapter couplings and introduce potential failure points.

4. Mounting Bolt Pattern
Measure the bolt hole positions, centre distances, and overall envelope on your flail mower’s gearbox mounting flange.
Importance: Ensures direct bolt-on installation without any fabrication or adapter plates.

5. Torque Demand
Calculate the peak torque your grass cutting application generates — including shock loads from obstacles or material variations.
Importance: The gearbox must handle peak torque without activating overload protection during normal operation.

6. Tractor PTO Speed
Check your tractor’s PTO specification — standard is 540 RPM or 1000 RPM.
Importance: Determines the input shaft spline size and the baseline for ratio calculation.

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.

💡 Proffstips: Ordering tip: if replacing an existing gearbox, measure the input/output shaft diameters and mounting bolt pattern as a minimum. With these three dimensions, our team can match the correct unit from our catalogue or design a custom solution.

Agricultural Gearbox Collection

🔧 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.

Steg 1: Töm och dokumentera den gamla växellådan

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.

⚠ Viktigt: 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.

⚠ Växellådan ger ifrån sig ett metalliskt klonkande ljud vid inkoppling av kraftuttaget

Probable Cause: Overload protection mechanism is loose

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.

⚠ Onormalt malande eller vinande ljud

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.

⚠ Utgående axel slutar rotera medan ingången roterar

Probable Cause: Internal shaft fracture

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.

⚠ Överdriven vibration under drift

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.

⚠ Växellådan går överdrivet varm

Probable Cause: Incorrect oil grade (too thick or too thin for conditions)

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

Kund: Derek Whitfield — commercial grass cutting contractor
Plats: Mackay, QLD
Gårdens storlek: 3500 acres
Ansökan: Flail Mower gearbox for flail mower — grass cutting
Köporsak: 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

Drift: kooperativ jordbruksgrupp | Storlek: 1000 acres | Använda: Flail Mower gearbox for grass cutting

Anledning till köp: Akut byte mitt i säsongen efter katastrofalt fel på originalväxellådan

“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

Klient: Luke Anderson | Ansökan: Flail Mower gearbox — grass cutting

Ändamål: Nybyggd utrustning — specificering av eftermarknadsväxellåda som OEM-förbättring

“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

Kund: Terry Voss — broadacre cropping operation
Plats: Hamilton, VIC
Gårdens storlek: 1000 acres
Ansökan: Flail Mower gearbox for flail mower — grass cutting
Köporsak: 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 VossHamilton, VIC

Ed Pearce — Melbourne, VIC

Drift: intensive horticultural farm | Storlek: 4000 acres | Använda: Flail Mower gearbox for grass cutting

Anledning till köp: Uppgradering från budget eftermarknadsenhet som varade mindre än en säsong

“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?

Ja – varje köp inkluderar tillgång till vårt tekniska supportteam för installationsvägledning, felsökning, underhållsråd och beställning av delar. Support är tillgänglig via telefon, e-post och vårt kontaktformulär online. Det finns ingen kostnad för teknisk support under eller efter garantiperioden.

🔹 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?

Vår 24-månaders omfattande garanti täcker alla defekter i material och utförande, inklusive lager, kugghjul, tätningar och hus. Den gäller från inköpsdatum och backas upp av vårt ISO-certifierade kvalitetsledningssystem. Utökade garantiprogram är tillgängliga för bulk- och flottordrar.

🔹 Which gear oil do you recommend for Australian conditions?

För de flesta australiska klimat är SAE 80W-90 EP-växellådsolja som uppfyller GL-5-specifikationen idealisk. I tropiska områden med ihållande höga temperaturer rekommenderar vi 85W-140. För södra regioner som upplever kalla vintrar ger syntetisk 75W-90 bättre kallstartskydd. Kontrollera oljespecifikationskortet som medföljer din växellåda för den definitiva rekommendationen.

🔹 Can I return a gearbox if it does not fit my flail mower?

Om du anger dina utrustningsuppgifter innan du beställer och vi bekräftar kompatibilitet garanteras passformen. I de sällsynta fall av kompatibilitetsproblem erbjuder vi ett byte eller återbetalning utan frågor på oanvända växellådor inom 30 dagar efter leverans. Vårt mål är att matcha dig med rätt växellåda vid första beställningen.

🔹 Is the gearbox suitable for use in organic-certified farming operations?

Våra växellådor är mekaniska komponenter och innehåller inga ämnen som skulle kunna påverka ekologisk certifiering. Valet av smörjmedel bör dock övervägas – vi kan rekommendera livsmedelsgodkända och biologiskt nedbrytbara växellådsoljor som är kompatibla med ekologiska jordbruksstandarder i Australien och internationellt.

🔹 Can the gearbox be serviced or rebuilt in the field?

Routine service (oil changes, seal replacement, bearing inspection) can be performed on-site with standard tools. For major rebuilds, we supply complete overhaul kits containing all bearings, seals, and gaskets. Detailed service manuals and video guides are available for download from our support portal.

🔹 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 Shaft

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 →

Gearbox Range

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 installationerna inkluderar:

Standardöverensstämmelse

Standard Relevans
AS/NZS ISO 9001:2015 — Kvalitetsledning Vår tillverkningsanläggning är certifierad enligt internationell kvalitetsledningsstandard.
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.

WHS-krav på delstatsnivå

  • Northern Territory — WHS (National Uniform Legislation) Regulations 2011: applies federal standards to grass cutting operations territory-wide.
  • Södra Australien — WHS-förordningar 2012: kräver regelbunden inspektion av alla maskiner med roterande drivkomponenter.
  • Tasmania — WHS Regulations 2012: mandates operator training for all PTO-driven flail mower equipment.

Regionalt täcknings- och leveransnätverk

Vi levererar 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

Our Factory

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 & Custom — We Build Both

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.

Drawings, samples, dimensions, photos — whatever you have, send it. We will engineer the rest.

🏭 Discover Our Full Capabilities →

Din betrodda partner för växellådslösningar för jordbruket – standard och specialanpassade – i hela Australien och världen över.