Gearbox for Combined Tillage

Cómo: Refer to your combined tillage machine manufacturer’s manual for the recommended multi-shaft output operating speed

Por qué es importante: Together with PTO speed, this defines the exact gear ratio your gearbox needs

Cómo: Assess exposure to dust, moisture, chemicals, and temperature extremes in your typical multi-function tillage conditions

Por qué es importante: Determina el grado de sellado, el recubrimiento de la superficie y las especificaciones del material de la carcasa adecuados.

Cómo: Estimate your annual operating hours for the combined tillage machine to determine appropriate service life rating

Por qué es importante: High-hour operations justify premium bearing and gear specifications for lowest cost per hour

Cómo: Determine whether the multi-shaft output on your combined tillage machine requires clockwise or counter-clockwise output when viewed from the drive end

Por qué es importante: Una dirección de rotación incorrecta dañará el implemento o no producirá ningún trabajo útil.

Cómo: Measure the bolt hole positions, centre distances, and overall envelope on your combined tillage machine’s gearbox mounting flange

Por qué es importante: Garantiza una instalación directa mediante pernos sin necesidad de modificaciones ni placas adaptadoras.

Cómo: Calculate the peak torque your multi-function tillage application generates — including shock loads from obstacles or material variations

Por qué es importante: La caja de cambios debe soportar el par máximo sin activar la protección contra sobrecarga durante el funcionamiento normal.

Cómo: Identify the coupling type on your combined tillage machine — keyed, splined, flanged, or hollow bore

Por qué es importante: Las salidas incompatibles requieren costosos acoplamientos adaptadores e introducen posibles puntos de fallo.

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.

Carefully lift the new Combined Tillage gearbox into position on the mounting flange, aligning all bolt holes. Insert mounting bolts hand-tight first, confirming proper alignment. Once all bolts are started, torque them in a star (cross) pattern to the value specified in the installation manual. Verify the gearbox sits flush against the frame with no gaps.

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.

Attach the gearbox output shaft to the combined tillage machine’s multi-shaft output 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.

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.

Clean the mounting flange on the combined tillage machine 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.

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.

Probable Cause: Lubricante insuficiente o grado de aceite incorrecto

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.

Probable Cause: Nivel de aceite excesivo que crea una presión interna excesiva

Recommended Action: First, check and correct the oil level — overfilling is a surprisingly common cause of seal leaks. Clean or replace the breather cap. If oil level is correct and breather is clear, the seal has worn and should be replaced using our seal kit.

Probable Cause: Dientes de engranaje desgastados o engranaje roto

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.

Probable Cause: Juntas universales desgastadas en la transmisión

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 multi-shaft output for wear or damage.

Probable Cause: Componentes internos sueltos o piezas de sujeción

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.

Absolutely. We manufacture gearboxes with keyed, splined, flanged, hex, and hollow-bore output shaft configurations. If your combined tillage machine 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.

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.

Our 24-month comprehensive warranty covers all defects in materials and workmanship, including bearings, gears, seals, and housing. It applies from the date of purchase and is backed by our ISO-certified quality management system. Extended warranty programs are available for bulk and fleet orders.

We maintain compatibility databases covering combined tillage machine 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.

Provide us with your tractor brand/model and PTO speed, the combined tillage machine manufacturer and model, and the old gearbox part number if available. Alternatively, measure the input/output shaft dimensions and mounting bolt pattern. Our selection engineers will identify the correct match, typically within 24 hours.

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.

We offer tiered pricing starting from single-unit purchases, with meaningful discounts beginning at 5+ units. Dealer and OEM pricing structures are available for agricultural equipment retailers and combined tillage machine manufacturers. Contact our sales team for a formal quotation tailored to your volume requirements.

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.

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.

We offer a comprehensive range of ratios from 1:1 through 1:6 to match virtually any combined tillage machine configuration. Standard catalogue ratios ship within days; custom ratios can be manufactured within 2-3 weeks. Our engineers will recommend the optimal ratio based on your tractor PTO speed and multi-function tillage requirements.