PTO Shaft for Disc Mower – Heavy-Duty Power Transmission Solutions
Operating a disc mower demands reliable, uninterrupted rotational power delivered from the tractor’s power take-off (PTO) to the implement. Our PTO shaft for disc mower is precision-engineered to handle the unique torque loads, speed requirements, and environmental stresses of cutting and mowing forage crops. Whether you manage broadacre farming or intensive horticulture, this PTO drive shaft ensures peak performance season after season.
Technical Specifications – Disc Mower PTO Shaft
| Parámetro | Especificaciones / Gama personalizable |
|---|---|
| Solicitud | Disc Mower |
| Potencia recomendada del tractor | 30–90 HP |
| Velocidad de la toma de fuerza | 1000 rpm |
| Par máximo continuo | 200–600 Nm |
| Capacidad de par máximo | 900 Nm |
| Serie de ejes | T2 / L2 (Servicio ligero-medio) / T3 / L3 (Servicio medio) / T4 / L4 (Servicio medio-pesado) |
| Safety Guard Material | ABS plastic / Injection-moulded PP (polypropylene) |
| Rango de temperatura de funcionamiento | -20°C a +80°C |
| Diámetro exterior del tubo | 42 mm |
| Dureza de la estría | HRC 58-62 |
| Tube Profile | Lemon profile or Square profile |
| Opciones de horquilla para el extremo del tractor | Double yoke / Plain bore yoke |
| Espesor de la pared del tubo | 3.0 mm |
| Overload Protection Options | Shear bolt torque limiter / Friction clutch torque limiter / Cam-release clutch |
| Opciones de yugo en el extremo del implemento | Plain bore yoke / Splined yoke (1-3/4″ 6-spline) |
| Tamaño de la junta universal | 36×89 mm / 22×54.8 mm / 27×74.5 mm |
| Material del yugo | Acero al carbono forjado (C45) |
| Lubricante recomendado | EP2 lithium |
| Longitud máxima extendida | 1311 mm |
| Closed Length (Lmin) | 700–1100 mm (customisable) |
How a PTO Shaft Works on a Disc Mower
The PTO shaft transmits rotational energy from the tractor’s rear PTO stub to the input shaft of the disc mower. The assembly consists of two yokes connected by a telescoping profile tube, with universal joints (U-joints) at each end allowing angular misalignment as the tractor and implement articulate over uneven ground.
During cutting and mowing forage crops, the tractor PTO stub rotates at a standardised speed. This rotation passes through the first U-joint, travels along the profile tube (which telescopes to accommodate changes in distance), and exits through the second U-joint into the implement gearbox. A safety guard encloses the entire rotating assembly to prevent entanglement.
On the disc mower specifically, the PTO shaft drives the main gearbox, which in turn powers the working elements. Overload protection—typically a shear bolt or friction clutch—is integrated at the implement-end yoke to safeguard the driveline against sudden blockages or shock loads.
Core Advantages of Our PTO Shaft for Disc Mower
⚙ Heat-Treated Components
Every yoke and U-joint cross in our disc mower PTO shaft is induction-hardened and tempered, delivering superior fatigue resistance compared to standard cast components.
⚖ Precision-Balanced Assembly
Computer-balanced shaft assemblies minimise vibration, reducing wear on tractor and implement bearings and extending overall driveline life.
🔒 Integrated Overload Protection
Factory-fitted torque limiters protect your investment by automatically disengaging under shock loads, preventing costly repairs to gearboxes and drivelines.
🔧 Telescoping Design
Profile tubes telescope smoothly to accommodate field undulations and turning manoeuvres, ensuring consistent power delivery during operation.
🛡 Full Safety Guarding
CE-compliant safety shields with bearing-mounted rotation enclose the entire shaft, meeting Australian WHS requirements and protecting operators.
🏆 Extended Warranty
We stand behind our products with an industry-leading warranty, reflecting our confidence in the durability and reliability of every PTO shaft we supply.
Brand Compatibility & Replacement Parts
Our PTO shaft for disc mower is designed as a direct-fit replacement for driveline assemblies supplied by Weasler, GKN Walterscheid, Benzi & Di Terlizzi, Bondioli & Pavesi, Industrias Comer, Driveline Parts, and others. We stock cross-reference guides to help you identify the correct shaft for your existing equipment.
⚠ Brand names are referenced solely for cross-compatibility identification purposes. We are not affiliated with, nor do we claim endorsement by, any of the brands mentioned. All trademarks remain the property of their respective owners.
Spare Parts & Accessories
Every component of our PTO shaft is available individually: U-joint cross kits, yokes (tractor-end and implement-end), profile tubes, safety guards, guard chains, torque limiters, and bearing kits. This means you can service and rebuild your shaft indefinitely, reducing long-term ownership costs.
Regulations, Compliance & Local SEO Considerations
Australian Safety Standards
All PTO shafts supplied for disc mower applications comply with AS 1121 (Power take-offs for agricultural tractors) and AS/NZS 4024.1 (Safety of machinery). Safety guards meet the guarding requirements of Safe Work Australia’s model WHS Regulations.
CE & ISO Compliance
Our manufacturing facility holds ISO 9001:2015 certification. Shaft assemblies are designed in accordance with ISO 5673 (Agricultural tractors and machinery – PTO drive shafts) and CE-marked where applicable.
State & Territory Requirements
PTO-driven equipment across Queensland, New South Wales, Victoria, Western Australia, South Australia, and Tasmania must comply with local WHS codes of practice for agricultural machinery. Our shafts are supplied with all required safety guarding and documentation to meet these obligations.
Quick Selection Guide for Disc Mower PTO Shafts
Use the table below to determine the correct PTO shaft specification for your disc mower. Measure your existing shaft or consult your implement manual before ordering.
| Parámetro | Qué comprobar | Typical Range for Disc Mower |
|---|---|---|
| Tractor HP | Check tractor nameplate or manual | 30–90 HP |
| Velocidad de la toma de fuerza | Tractor PTO setting & implement requirement | 540 or 1000 rpm |
| PTO Spline Size | Count splines on tractor PTO stub | 1-3/8" 6-spline or 1-3/4" 6-spline |
| Shaft Closed Length | Measure tractor PTO to implement input | 700–1100 mm |
| Required Torque | Check implement manual or calculate from HP/speed | 200–600 Nm |
| Recommended Series | Match to torque requirement | T2 / L2 (Servicio ligero-medio) / T3 / L3 (Servicio medio) / T4 / L4 (Servicio medio-pesado) |
| Protección contra sobrecarga | Assess risk of sudden blockage | Friction clutch or shear bolt |
| Implement Yoke Type | Match to implement input shaft profile | Quick-release or splined |
📌 Not sure which shaft to choose? Contact our technical team with your tractor model and implement details for a free recommendation.
Installation Guide – PTO Shaft on Disc Mower
⚠ Warning: Always shut down the tractor engine, disengage the PTO, and wait for all rotating parts to stop completely before beginning installation. Follow your tractor and implement manufacturer’s safety instructions.
Step 1: Pre-Installation Inspection
Unpack the PTO shaft and inspect all components for shipping damage. Verify that the yoke splines, U-joints, profile tubes, and safety guards are in perfect condition. Confirm the shaft series and length match your disc mower requirements.
Step 2: Set Correct Shaft Length
Park the tractor with the disc mower in its normal working position. Measure the distance from the tractor PTO stub face to the implement input shaft face. Adjust the telescoping tubes so that the shaft closed length is approximately 10–15 mm shorter than this measured distance to allow for suspension travel.
Step 3: Connect Tractor-End Yoke
Slide the tractor-end yoke onto the PTO stub shaft. Ensure the splines engage fully and the locking mechanism (push-pin or collar) clicks into place. Verify there is no excessive radial play.
Step 4: Connect Implement-End Yoke
Align the implement-end yoke with the disc mower’s input shaft. Slide the yoke onto the splines or into the keyway and secure with the appropriate locking mechanism. If a torque limiter is present, ensure it is correctly oriented per the manufacturer’s markings.
Step 5: Install Safety Guards
Slide the guard halves over the shaft and connect them using the supplied clips. Attach the guard retention chains—one to the tractor drawbar or a fixed point, one to the implement frame. The guards must be able to rotate freely and must never be attached to a rotating component.
Step 6: Final Check & Test Run
Verify all connections are secure. Start the tractor engine and engage the PTO at idle speed. Observe the shaft for smooth rotation, unusual vibration, or noise. Gradually increase to operating speed. Re-check all fasteners after the first hour of operation.
PTO Shaft Troubleshooting Guide for Disc Mower
| Symptom | Possible Cause | Recommended Action |
|---|---|---|
| PTO shaft disconnects during operation | Collarín de bloqueo desgastado; ranura de retención dañada en el extremo de la toma de fuerza. | Reemplace la horquilla de liberación rápida; inspeccione y repare la ranura del vástago de la toma de fuerza si está desgastada. |
| Safety guard not rotating freely | Los cojinetes de protección están atascados; la protección está dañada o desalineada. | Reemplace los cojinetes de protección; enderece o reemplace las mitades de la protección; vuelva a colocar las cadenas correctamente. |
| Clicking or knocking noise at low speed | Worn U-joint needle bearings; loose yoke on PTO stub | Replace U-joint assembly; check spline wear and yoke locking mechanism |
| Unusual whining or grinding sound | Fallo del cojinete de entrada de la caja de cambios; eje desalineado | Inspeccione la caja de engranajes del implemento; realinee el tractor y el implemento; verifique la superposición de la longitud del eje. |
| Heat build-up at U-joint | Lubricación insuficiente; ángulo de funcionamiento excesivo; fallo del cojinete | Engrase las juntas universales inmediatamente; reduzca el ángulo de funcionamiento; reemplace el kit transversal si los cojinetes están dañados. |
| Shaft will not telescope smoothly | Corrosión o residuos en los tubos perfilados; lubricación insuficiente. | Limpie y engrase los tubos de perfil; reemplácelos si se observan marcas. |
| Implement speed inconsistent | El eje de la toma de fuerza patina; estrías desgastadas; embrague parcialmente acoplado. | Compruebe el acoplamiento de la horquilla; sustituya la horquilla si las estrías están desgastadas; ajuste o sustituya el conjunto del embrague. |
| Overload clutch slipping under normal load | Discos de embrague desgastados o contaminados; ajuste de par incorrecto | Ajuste el par de apriete del embrague; sustituya los discos de embrague si están desgastados o contaminados con aceite. |
Case Studies – PTO Shaft for Disc Mower in Australia
Notas de campo de nuestro equipo de ingeniería y ventas en toda Australia:
📍 Port Augusta, SA – Chris Taylor
Objetivo: Outfitted a newly purchased second-hand disc mower with a reliable aftermarket PTO shaft
Comentario: “I ordered a replacement cross kit six months later and it arrived within 48 hours. Great product, great service, great support.”
📍 Murray Bridge, SA – Stuart Palmer
Objetivo: Se sustituyó un eje corroído que había estado expuesto a residuos de aerosoles químicos.
Comentario: “Las protecciones de seguridad son robustas y giran libremente. Cumplen con los requisitos de seguridad y salud laboral, a diferencia de las baratas que ofrecen otros proveedores.”
📍 Emerald, QLD – Tom Sullivan
Objetivo: Upgraded overload protection from shear bolt to friction clutch for smoother cutting and mowing forage crops
Comentario: “Fitted perfectly to my disc mower with zero modification. The quality is noticeably better than the OEM shaft it replaced. I’ll be ordering more for my other implements.”
📍 Colac, VIC – Barry Sinclair
Objetivo: Required a custom-length shaft for a non-standard tractor-to-implement spacing
Comentario: “Entrega rápida a zonas rurales de Australia. El eje llegó bien embalado y las juntas universales funcionan a la perfección. Me ha impresionado mucho la calidad de fabricación.”
📍 Adelaide, SA – Tony Blake
Objetivo: Upgraded from a light-duty shaft to a heavy-duty series for commercial-scale cutting and mowing forage crops
Comentario: “We swapped out our old economy shaft for this one and noticed an immediate reduction in vibration. The tractor runs quieter and the implement operates smoother.”
Frequently Asked Questions – PTO Shaft for Disc Mower
❓ ¿Se puede acortar el eje para adaptarlo a mi configuración?
Sí. Los tubos telescópicos se pueden cortar a una longitud menor con una amoladora angular o una sierra de corte. Asegúrese de que quede un solapamiento mínimo de 1/3 entre los tubos interior y exterior después del corte. Elimine las rebabas de todos los bordes cortados antes del reensamblaje.
❓ ¿Realizan envíos a zonas regionales y remotas de Australia?
Por supuesto. Realizamos envíos a todos los códigos postales australianos a través de las principales empresas de transporte. Las zonas regionales y remotas pueden tener tiempos de tránsito ligeramente más largos, pero trabajamos con varias empresas de transporte para garantizar una entrega fiable en todo el país.
❓ ¿Cuál es la diferencia entre un perno de seguridad y un embrague de fricción?
Un perno de seguridad es un pasador de sacrificio que se rompe cuando el par de torsión supera su capacidad nominal. Es económico, pero requiere reemplazo manual después de cada uso. Un embrague de fricción se desliza cuando se sobrecarga y se acopla automáticamente cuando cesa la sobrecarga, lo que permite un funcionamiento ininterrumpido en aplicaciones propensas a cargas de choque frecuentes.
❓ ¿Puedo usar un eje de 540 rpm en una toma de fuerza de 1000 rpm?
No. Usar un eje con una velocidad nominal de 540 rpm en una toma de fuerza (TDF) de 1000 rpm provocará una velocidad excesiva, vibraciones peligrosas y una posible falla catastrófica. Siempre ajuste la velocidad nominal del eje tanto a la configuración de la TDF del tractor como a los requisitos del implemento.
❓ Will this shaft fit my tractor and disc mower?
Our PTO shafts are available with all standard yoke types and spline sizes (1-3/8" 6-spline, 1-3/4" 6-spline, 1-3/4" 20-spline, and more). Provide your tractor model and disc mower make/model, and our team will confirm compatibility before dispatch.
❓ Can I upgrade my existing disc mower PTO shaft to a heavier series?
En la mayoría de los casos, sí. Siempre que las dimensiones de las estrías de la horquilla coincidan con el eje de entrada de la toma de fuerza de su tractor y el eje de entrada del implemento, puede actualizar a una serie más robusta para obtener mayor capacidad de torsión y durabilidad. Nuestro equipo técnico puede asesorarle sobre la actualización más adecuada para su equipo.
❓ Are your PTO shafts balanced?
Yes. All our PTO shaft assemblies are dynamically balanced during manufacture. This reduces vibration, extends bearing life, and provides smoother operation compared to unbalanced aftermarket alternatives.
❓ ¿Con qué frecuencia debo engrasar el eje de la toma de fuerza?
Engrase todos los racores de las juntas universales cada 8-10 horas de funcionamiento o al inicio de cada jornada laboral. Engrase los tubos telescópicos con la misma frecuencia. Utilice grasa de litio EP2 o la recomendada en el manual del producto.
Productos relacionados
Complement your Disc Mower PTO shaft with these products from our range:
Partner With Us – Disc Mower PTO Shaft Solutions
Whether you are a farmer seeking a single replacement shaft, a dealer looking to stock reliable driveline products, or an OEM manufacturer requiring bulk supply, we are ready to support your needs. Our disc mower PTO shafts are available in standard and custom configurations, with competitive pricing for volume orders.
📞 Contact our team today to discuss your requirements, request a quotation, or arrange a technical consultation. We are committed to delivering the right shaft, on time, every time.