Industrial-Strength Rotary Rake Gearbox — Reliable Power for Hay Raking
A quality gearbox separates productive hay raking from costly downtime. Our Rotary Rake agricultural gearbox is the product of advanced metallurgy, precision manufacturing, and extensive field validation across diverse Australian farming environments. The rotary rake gearbox drives one or more large tine arms that sweep cut hay into windrows. Mounted at the top of the rake mast, it converts PTO input into the circular sweeping motion of the rake arms while maintaining consistent ground-following through varying terrain.
Whether you are replacing a failed OEM unit or upgrading to a more durable solution, this gear drive offers drop-in compatibility with leading rotary rake brands and models — backed by engineering support from specification to installation.
📊 Detailed Specifications — Rotary Rake Agricultural Gearbox
Our rotary rake gearbox is manufactured to the following specifications. Custom engineering is available for non-standard hay raking applications.
| Parámetro | Value |
|---|---|
| Peso neto | 32 kg |
| Bearing Design Life (L10) | 6000 hours minimum |
| Backlash | ≤ 8 arc-minutes |
| Dirección de rotación | CCW standard (CW optional) |
| Lubricante recomendado | SAE 80W-90 GL-5 |
| Mounting Configuration | 6-bolt circular |
| Input Shaft Diameter | 30 mm |
| Lubrication Method | Forced circulation |
| Número de etapas de engranajes | 3 |
| Design Standard | ISO 6336 + FEA verified |
| Parámetro | Value |
|---|---|
| Dureza de la superficie del engranaje | HRC 58 – 64 |
| Clase de protección IP | IP55 |
| Tipo de eje de salida | Keyed shaft |
| Eficiencia a carga nominal | 98% |
| Relaciones de transmisión disponibles | 1:1.5 to 1:3.5 |
| PTO Input Speed | 540 / 1000 RPM |
| Input Shaft Spline | 6-spline (1-3/8″) / 21-spline (1-3/4″) |
| Material de vivienda | Spheroidal Graphite Iron |
| Noise at 1m Distance | ≤ 72 dB(A) |
| Distancia al centro | 80 mm |
Contacta con nosotros equipo de ingeniería for a detailed specification sheet tailored to your rotary rake model and hay raking conditions.
⭐ Why Professionals Choose Our Rotary Rake Gearbox
We believe in transparency. These are the specific, verifiable differences between our Rotary Rake gear drive and low-cost alternatives:
| Especificación | Low-Cost Alternative | Our Engineered Rotary Rake Gearbox |
|---|---|---|
| Piezas de repuesto | Parts vary batch to batch | Standardized parts across model range |
| Garantía y soporte | 6-month limited warranty, difficult claims process | Full 2-year warranty + engineer hotline + install support |
| Eficiencia operativa | 80-88% — varies wildly between units | 95-97% — independently verified on calibrated dynamometer |
| Diseño de viviendas | Welded steel fabrication, dimensional inconsistency | Hierro fundido esferoidal (SG700), orificios para cojinetes mecanizados por CNC, aletas de refrigeración integradas. |
| Protección de superficies | Esmalte aplicado con pincel, cobertura irregular. | Cathodic e-coat + powder coat, 1000-hr salt spray test |
| Expected Service Life | 300-800 hours before first major repair | 5,000-8,000 hours demonstrated in Australian commercial operations |
When your livelihood depends on your rotary rake performing during critical hay raking windows, a quality gearbox is essential. Choose the gearbox validated by millions of Australian field hours.
⚙ From PTO to Tine Arm Drive — Rotary Rake Gearbox Anatomy
Our Rotary Rake agricultural gearbox is a specialized power transmission unit for hay raking:
▶ PTO Power Input
▶ Gear Reduction & Torque Multiplication
▶ Output to Tine Arm Drive
▶ Lubrication & Protection
🔄 Which OEM Rotary Rake Gearboxes Does Ours Replace?
Cross-reference data is provided as a customer service. All brand names and model numbers remain the intellectual property of their respective owners.
Our Rotary Rake gearbox directly replaces the factory gear drive on the following rotary rake brands:
Type 56J, K-484
✅ Compatible
Series 269, Model 5207
✅ Compatible
Model 3913, Type 14F
✅ Compatible
G4.5, Model 2245
✅ Compatible
Mk-III, Type 30A
✅ Compatible
Type 16J, G-173
✅ Compatible
Model 2195, Mk-V
✅ Compatible
Parts & Service Support
- Bearing rebuild kits with spacers and shims
- Seal & gasket replacement kits
- Matched gear pairs — pinion and wheel
- Input and output shaft assemblies
📚 Selection Flowchart — Find Your Perfect Rotary Rake Gearbox
Before ordering your Rotary Rake gearbox, confirm these critical parameters to ensure perfect fitment and performance:
Tractor PTO Speed
Compruebe las especificaciones de la toma de fuerza (TDF) de su tractor; el estándar es de 540 RPM o 1000 RPM.
Determina el tamaño del estriado del eje de entrada y la línea base para el cálculo de la relación.
Operating Environment
Assess exposure to dust, moisture, chemicals, and temperature extremes in your typical hay raking conditions
Determina el grado de sellado, el recubrimiento de la superficie y las especificaciones del material de la carcasa adecuados.
Tipo de eje de salida
Identify the coupling type on your rotary rake — keyed, splined, flanged, or hollow bore
Las salidas incompatibles requieren costosos acoplamientos adaptadores e introducen posibles puntos de fallo.
Power Requirement
Match the gearbox HP rating to your tractor’s PTO horsepower output and the rotary rake’s demand
Under-rating leads to overheating and premature failure; over-rating adds unnecessary cost and weight
Dirección de rotación
Determine whether the tine arm drive on your rotary rake requires clockwise or counter-clockwise output when viewed from the drive end
Una dirección de rotación incorrecta dañará el implemento o no producirá ningún trabajo útil.
Required tine arm drive Speed
Refer to your rotary rake manufacturer’s manual for the recommended tine arm drive operating speed
Together with PTO speed, this defines the exact gear ratio your gearbox needs
Torque Demand
Calculate the peak torque your hay raking application generates — including shock loads from obstacles or material variations
La caja de cambios debe soportar el par máximo sin activar la protección contra sobrecarga durante el funcionamiento normal.
💡 Consejo profesional: Not sure which model you need? Our selection engineers have cross-referenced thousands of rotary rake gearbox applications. Send us any information you have — even partial — and we will find the right match. Get in touch here.
📝 How to Install Your New Rotary Rake Agricultural Gearbox
This guide covers the complete process of replacing the gearbox on your rotary rake. Each step includes specific details for hay raking equipment — follow them in sequence for best results.
Step 1 — Connect PTO Driveline
Slide the PTO driveline yoke over the gearbox input spline. Ensure full engagement — the yoke should slide past the retaining groove and click into place. Test the engagement by pulling firmly on the yoke; it should not detach. Verify that the driveline length allows adequate telescoping stroke throughout the full range of implement movement.
Step 2 — Prepare the Mounting Surface
Scrape any old gasket material or RTV sealant from the rotary rake’s gearbox mounting face. Use a flat file to remove any burrs around bolt holes. Verify all mounting holes align correctly by test-fitting the new gearbox without bolts. Check for flatness — a feeler gauge should show less than 0.1mm across the mounting surface.
Step 3 — Test Run & Break-In
With the rotary rake raised or in a safe test position, start the PTO at idle speed. Observe the gearbox for any vibration, unusual noise, or oil seepage. Run for 20 minutes at reduced speed. If all is normal, increase to the operating PTO speed and run for an additional 10 minutes while monitoring temperature. Re-check all mountings.
Step 4 — Remove Old Gearbox
Detach the driveline yoke from the gearbox input. If the gearbox also has an output coupling to the tine arm drive, disconnect that as well. Support the gearbox from below with a hydraulic jack. Remove the mounting fasteners progressively, keeping at least two bolts finger-tight until you are ready to slide the unit out.
Step 5 — Drain & Document Old Gearbox
Place a collection pan beneath the gearbox. Remove both the fill and drain plugs to speed drainage. While oil drains, photograph the gearbox nameplate, mounting arrangement, and driveline connection — these images are invaluable if questions arise during installation of the new unit.
Step 6 — Connect Output to tine arm drive
Connect the output coupling to the tine arm drive drive on your rotary rake. Ensure the shaft engagement depth meets the minimum specified in the manual. Tighten all retaining hardware to the correct torque value. After connection, rotate the output by hand to verify smooth, unrestricted movement.
Step 7 — Safety Preparation
Position the rotary rake on a flat, stable surface and immobilize the tractor. Disengage the PTO and shut down the engine. Remove the ignition key to prevent accidental start-up. Wait at least 15 minutes for hot surfaces to cool. Gather your tool kit: socket set, torque wrench, clean containers for oil, and the installation manual.
Step 8 — Post-Installation Checks (10-Hour Service)
Perform a 10-hour service: re-check mounting bolt torque, inspect for leaks, verify oil level, and confirm the PTO safety guard is in place. Clean any accumulated debris from the gearbox housing to maintain effective heat dissipation. Log the installation details in your equipment maintenance records.
⚠ Importante: For safety, never work under unsupported equipment. Use proper lifting devices when handling the gearbox unit.
🔎 Diagnostic Checklist — Rotary Rake Gearbox
Even the best-engineered gearbox may encounter operational issues over its service life. This guide covers the most common symptoms reported with rotary rake gearboxes and provides actionable field solutions.
⚠ Vibración excesiva durante el funcionamiento
Likely cause: Loose mounting bolts allowing gearbox movement
What to do: Vibration in a rotary rake gearbox system usually originates from the driveline, not the gearbox itself. Inspect the PTO shaft U-joints — a worn joint creates a twice-per-revolution vibration pulse. Confirm the driveline is the correct length for the tractor-to-implement distance. Re-torque the gearbox mounting bolts.
⚠ Fuga de aceite en los sellos del eje
Likely cause: Blocked breather vent preventing pressure relief
What to do: Inspect the breather cap — a blocked breather pressurizes the housing and forces oil past seals. Replace the breather and clean any debris. If leaking continues, replace the affected seal. Check the shaft surface under the seal for grooves or corrosion that may be cutting the seal lip.
⚠ La caja de cambios produce un ruido metálico al acoplarse la toma de fuerza.
Likely cause: PTO driveline too long, causing impact on engagement
What to do: Check the PTO driveline length — a driveline that is slightly too long will ‘bottom out’ on engagement, creating a sharp metallic sound. Verify all external hardware (mounting bolts, guard brackets, driveline clamps) is secure. If the sound comes from inside the gearbox under load, internal inspection is recommended.
⚠ Difficulty Connecting PTO Driveline to Gearbox
Likely cause: Damaged or worn PTO yoke engaging surface
What to do: Apply penetrating oil to the input splines and allow it to work for 5 minutes. Rotate the PTO driveline slightly while applying light pressure — the splines need to index before engaging. If the driveline yoke is worn, replace it before installation to prevent premature input bearing failure.
⚠ Ruido de rechinido o zumbido anormal
Likely cause: Bearing wear or race damage
What to do: Check oil level immediately — low oil is the most common cause of gear noise in rotary rake gearboxes. If oil level is correct, the lubricant may have degraded — perform a complete oil change. Persistent noise indicates internal wear requiring professional assessment.
For persistent or complex issues, our engineers provide remote diagnostic support via phone and email. We can also supply rebuild kits for in-workshop repairs. Reach our support team here.
📍 Verified Case Studies — Rotary Rake Gearbox Performance Reports
Our agricultural gearboxes are field-proven across every Australian state and territory. Below are documented case studies from recent Rotary Rake gearbox installations.
Ed Pearce — Wangaratta, VIC
Operación: multi-generational family farm | Tamaño: 3500 acres | Usar: Rotary Rake gearbox for hay raking
Motivo de la compra: Replace failed OEM gearbox to restore rotary rake for the upcoming season
“We stress-test our equipment in ways that would void most warranties. This gearbox has handled everything we’ve thrown at it — heavy clay soils — without complaint.”
📍 Case #3: Dalby, QLD
| Cliente: | Greg McPherson — mixed farming enterprise |
| Ubicación: | Dalby, QLD |
| Tamaño de la granja: | 300 acres |
| Solicitud: | Rotary Rake gearbox for rotary rake — hay raking |
| Motivo de la compra: | New equipment build — specifying aftermarket gearbox as OEM improvement |
“The oil-tight sealing on this gearbox is remarkable. After 1406 hours of operation in wet environment, the oil comes out clean at service time. Previous gearboxes always had contaminated oil by the first oil change.”
— Greg McPherson, Dalby, QLD
Paul Hutchinson — Bundaberg, QLD
Operación: commercial hay raking contractor | Tamaño: 6000 acres | Usar: Rotary Rake gearbox for hay raking
Motivo de la compra: Sustitución de emergencia a mitad de temporada tras un fallo catastrófico de la caja de cambios original.
“Fast delivery to a remote location was the initial reason I tried this supplier. The gearbox quality is what made me a repeat customer — we have now standardised on their products across our fleet of 5 rotary rake machines.”
💬 Expert Answers: Rotary Rake Gearbox Buyer’s Questions
Q1: Will this gearbox fit older-model rotary rake equipment?
We maintain compatibility databases covering rotary rake models from the past 25+ years. Most older models can be directly fitted with our current gearbox range. For discontinued or rare models, send us the mounting dimensions and shaft specifications, and we will confirm fitment or design a custom adapter.
Q2: Can this gearbox withstand the shock loads generated during hay raking?
The gearbox is specifically designed for the dynamic and impact loading characteristic of hay raking 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 rotary rake load profiles.
Q3: How is the gearbox packaged for shipping?
Each gearbox is drained of shipping oil, wrapped in VCI (Vapor Corrosion Inhibitor) film, and crated in a sturdy plywood box rated for international freight. This packaging protects against moisture, impact, and corrosion during transit — even for shipments to remote Australian properties via road freight.
Q4: What documentation ships with the gearbox?
Cada caja de cambios incluye: manual de instalación con especificaciones de par, programa de lubricación y mantenimiento, diagrama de piezas con números de pieza individuales, tarjeta de registro de garantía y un certificado de inspección de calidad con el número de serie de la unidad y los resultados de las pruebas.
Q5: Do you provide technical support after purchase?
Yes — every purchase includes access to our engineering support team for installation guidance, troubleshooting, maintenance advice, and parts ordering. Support is available via phone, email, and our online contact form. There is no charge for technical support during or after the warranty period.
Q6: What is the expected lifespan under continuous hay raking operation?
Our Rotary Rake gearbox is rated for 3,000 to 5,000+ operating hours with proper maintenance. Many customers in intensive Australian operations report achieving 5,000+ hours before requiring any internal service. Key factors affecting lifespan include oil change frequency, operating load, and environmental conditions.
Q7: What payment and ordering options do you offer?
Aceptamos transferencias bancarias, tarjetas de crédito y órdenes de compra de cuentas establecidas. Para pedidos grandes, ofrecemos plazos de pago de 30 días, sujetos a aprobación de crédito. Puede realizar su pedido a través de nuestra página web, por correo electrónico o por teléfono. Disponemos de facturas proforma para pagos anticipados.
Q8: Do you deliver to remote farming areas in Australia?
Yes — we ship to every postcode in Australia, including remote and regional areas. We use experienced agricultural freight carriers who understand the urgency of seasonal equipment needs. Express shipping is available for emergency breakdown situations, and we maintain stock for immediate dispatch of popular models.
Q9: Which gear oil do you recommend for Australian conditions?
Para la mayoría de los climas australianos, el aceite para engranajes SAE 80W-90 EP con especificación GL-5 es ideal. En regiones tropicales con temperaturas elevadas sostenidas, recomendamos 85W-140. Para las regiones del sur con inviernos fríos, el aceite sintético 75W-90 ofrece una mejor protección en el arranque en frío. Consulte la ficha técnica del aceite que se incluye con su caja de cambios para obtener la recomendación definitiva.
Q10: Can the output shaft be customized for my specific rotary rake?
Absolutely. We manufacture gearboxes with keyed, splined, flanged, hex, and hollow-bore output shaft configurations. If your rotary rake 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.
🔧 Essential Accessories for Rotary Rake Applications
Maximize your hay raking equipment reliability with these complementary products designed to work with our Rotary Rake gearbox.
⚡ PTO Drive Shaft for Your Rotary Rake
Wide-angle PTO shafts with telescoping capability and friction clutch overload protection. Designed to mate perfectly with our Rotary Rake gearbox input spline.
⚙ Complete Agricultural Gearbox Range
Multi-machine operators benefit from our comprehensive gearbox catalogue — standardised quality, consolidated shipping, and volume pricing across the full range.
📜 Australian Compliance & Regulations — Rotary Rake Gearboxes
Understanding the regulatory landscape helps ensure your hay raking equipment meets all legal requirements. Our Rotary Rake gearboxes are designed with these standards in mind:
Standards Compliance
| Standard | Relevance |
|---|---|
| AS 4024 — Safeguarding of Machinery | Our products comply with Australian machinery safeguarding standards applicable to agricultural rotary rake equipment. |
| AS 1636 — Agricultural Machinery Safety | Our gearboxes meet design requirements for agricultural machinery components, including rotating part guarding interfaces. |
State-Level WHS Requirements
- New South Wales — Work Health and Safety Regulation 2017: requires documented maintenance records for all power-driven rotary rake machinery.
- Western Australia — WHS (General) Regulations 2022: includes obligations for remote farm operations involving hay raking equipment.
- South Australia — WHS Regulations 2012: requires regular inspection of all machinery with rotating drive components.
Nationwide Delivery — From Metro to Remote
Hacemos entregas Rotary Rake agricultural gearboxes to every state and territory in Australia. Our logistics network covers major farming regions including the Darling Downs, the Lockyer Valley, and the Burnett region, Western Districts VIC, Gippsland, and the North East, and the Atherton Tablelands, the Burdekin, and Mackay-Whitsunday. 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.
🎯 Take the Next Step — Rotary Rake Gearbox Solutions
15+ Manufacturing Heritage
Producing 100,000+ agricultural gearboxes annually for customers in more than 45 countries. Key capabilities: cmm (coordinate measuring machine) dimensional inspection, vibration analysis and noise measurement on every production batch, automated gear hobbing, shaping, and grinding centres.
We welcome custom orders: We specialise in non-standard, custom-designed gear drives built to your exact requirements. Whether you need a unique ratio, modified housing, non-standard shaft, or a bespoke gearbox for your rotary rake, we deliver — from prototype to volume production.
Su socio de confianza para soluciones de cajas de cambios agrícolas, tanto estándar como personalizadas, en toda Australia y el resto del mundo.
