{"id":2280,"date":"2026-05-08T09:30:13","date_gmt":"2026-05-08T09:30:13","guid":{"rendered":"https:\/\/www.agriculturalparts.top\/application\/pto-shaft-for-hay-rake\/"},"modified":"2026-05-08T09:30:13","modified_gmt":"2026-05-08T09:30:13","slug":"pto-shaft-for-hay-rake","status":"publish","type":"post","link":"https:\/\/www.agriculturalparts.top\/es\/application\/pto-shaft-for-hay-rake\/","title":{"rendered":"PTO Shaft for Hay Rake"},"content":{"rendered":"

PTO Shaft for Hay Rake \u2014 Smooth Rotary Drive for Perfect Windrow Formation<\/h2>\n

The hay rake PTO shaft<\/strong> \u2014 also known as a rotary rake driveshaft<\/em>, tedder rake cardan shaft<\/em>, or windrower PTO driveline<\/em> \u2014 powers the rotary tine mechanism that gathers cut grass, lucerne, and cereal hay into clean windrows ready for baling. Whether you operate a single-rotor side-delivery rake, a twin-rotor centre-delivery raking unit, or a large carousel tedder-rake combination, the PTO shaft is the single component that determines whether your rotors turn at the consistent speed needed for even, clean windrows \u2014 or deliver the variable output that creates ragged rows and baler feeding problems.<\/p>\n

Hay rake PTO shafts are among the lightest-loaded in agricultural machinery \u2014 rotor resistance is low and consistent, load spikes are uncommon, and working speeds are moderate. This means the shaft specification can be kept lean and lightweight, with the primary engineering focus on precise balance<\/strong> (for consistent rotor speed), CV joint geometry<\/strong> (rakes articulate significantly as they follow terrain), and lightweight construction<\/strong> (to minimise hitch loading on the relatively light tractors used for raking). Our hay rake PTO shaft<\/strong> (Series 3\/4) is precision-balanced and engineered for the specific geometry of rotary raking machinery.<\/p>\n

\"Hay<\/p>\n

View our full hay and forage equipment PTO shaft range<\/a> or contact us<\/a> for rake driveline selection.<\/p>\n

Technical Specifications \u2014 PTO Shaft for Hay Rake<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nStandard Value<\/th>\nCustomisable Range<\/th>\n<\/tr>\n<\/thead>\n
Series<\/td>\nSeries 3 \/ Series 4<\/td>\nSeries 2\u20134<\/td>\n<\/tr>\n
PTO Speed<\/td>\n540 RPM<\/td>\n540 RPM<\/td>\n<\/tr>\n
Power Rating<\/td>\nUp to 25 kW<\/td>\n5\u201345 kW<\/td>\n<\/tr>\n
Continuous Torque<\/td>\n300 N\u00b7m<\/td>\n60\u2013600 N\u00b7m<\/td>\n<\/tr>\n
Compressed Length<\/td>\n560\u2013780 mm<\/td>\n400\u20131,400 mm<\/td>\n<\/tr>\n
Extended Length<\/td>\n880\u20131,280 mm<\/td>\n600\u20131,900 mm<\/td>\n<\/tr>\n
Tube Profile<\/td>\nLemon \/ Triangular<\/td>\nLemon \/ Tri<\/td>\n<\/tr>\n
CV Joint<\/td>\nStandard (\u00b130\u00b0) at tractor end<\/td>\nCV \u00b125\u00b0 to \u00b135\u00b0<\/td>\n<\/tr>\n
Working Angle<\/td>\n\u00b130\u00b0<\/td>\n\u00b125\u00b0 to \u00b135\u00b0<\/td>\n<\/tr>\n
Input Spline<\/td>\n1-3\/8″ \u00d7 6 spline<\/td>\n1-3\/8″\u00d76 \/ 1-3\/8″\u00d721<\/td>\n<\/tr>\n
Output Spline<\/td>\n1-3\/8″ \u00d7 6<\/td>\nCustom<\/td>\n<\/tr>\n
Overload Protection<\/td>\nFriction clutch (light)<\/td>\nFriction \/ Shear bolt<\/td>\n<\/tr>\n
Slip Torque<\/td>\n220\u2013380 N\u00b7m<\/td>\n60\u2013600 N\u00b7m<\/td>\n<\/tr>\n
Guard Type<\/td>\nPE half-cone lightweight<\/td>\nHalf \/ Full cone PE<\/td>\n<\/tr>\n
Guard Weight<\/td>\n0.7 kg<\/td>\n0.4\u20131.8 kg<\/td>\n<\/tr>\n
Shaft Weight<\/td>\n2.6 kg<\/td>\n1.5\u20135.5 kg<\/td>\n<\/tr>\n
Balance Class<\/td>\nISO G6.3 at 540 RPM<\/td>\nG6.3 \/ G2.5<\/td>\n<\/tr>\n
Grease Interval<\/td>\nEvery 8\u201316 hours<\/td>\n8\u201325 hrs<\/td>\n<\/tr>\n
Surface Finish<\/td>\nZinc plate<\/td>\nZinc \/ Enamel<\/td>\n<\/tr>\n
Yoke Material<\/td>\nForged 20CrMnTi<\/td>\n20CrMnTi \/ 40Cr<\/td>\n<\/tr>\n
Temp Range<\/td>\n-25 \u00b0C to +75 \u00b0C<\/td>\n-40 \u00b0C to +90 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Working Principle of the Hay Rake PTO Shaft<\/h2>\n

In a rotary rake, the PTO shaft drives a central gearbox (or directly a shaft journal in simpler designs) that rotates a horizontal rake rotor carrying multiple tine arms radially outward. As the tractor moves forward, the spinning rotor sweeps cut material into a windrow to one side (side delivery) or between two rotors (centre delivery). Rotor speed determines the lateral discharge velocity of the material \u2014 too slow and material piles against the rotor; too fast and material is scattered wide of the intended windrow line. Consistent 540 RPM PTO input is the key operational requirement.<\/p>\n

The load on a hay rake shaft is among the lightest in PTO-driven machinery \u2014 the tine resistance is minimal, and the main mechanical demand is simply the rotational inertia of the rake rotor assembly. The primary protection need is against the occasional buried fence post or dense clump of wet material that momentarily overloads the rotor. The light friction clutch on our rake shaft provides this protection while being calibrated low enough to actually engage before the rotor or gearbox suffers damage.<\/p>\n

\"Hay<\/p>\n

Core Advantages of Our PTO Shaft for Hay Rake<\/h2>\n
\n
\n

Precision Balanced for Windrow Quality<\/strong><\/p>\n

G6.3 balance at 540 RPM ensures consistent rotor speed across the full working day \u2014 directly controlling windrow evenness and density that determines baler feeding quality.<\/p>\n<\/div>\n

\n

Lightest-Weight Specification<\/strong><\/p>\n

At 2.6 kg assembled, this is our lightest heavy-duty shaft \u2014 minimising the rear hitch loading that affects tractor front axle stability on the typically 40\u201375 HP tractors used for hay raking.<\/p>\n<\/div>\n

\n

CV Geometry for Terrain Following<\/strong><\/p>\n

\u00b130\u00b0 CV joint accommodates the terrain-following movement of modern wide-spread rakes as they follow paddock undulations without causing speed ripple in the rotor.<\/p>\n<\/div>\n

\n

Ultra-Light Friction Clutch<\/strong><\/p>\n

220\u2013380 N\u00b7m slip setting \u2014 genuinely calibrated for rake duty, not a generic clutch set too high. A correctly set light clutch actually protects the rake rotor gearbox; an over-set clutch passes damage through without engaging.<\/p>\n<\/div>\n

\n

Hay Season Stock Priority<\/strong><\/p>\n

Series 3\/4 hay rake shaft configurations are among our highest-stocked items during the spring-summer hay season \u2014 same-day dispatch on standard configurations.<\/p>\n<\/div>\n

\n

Twin-Rotor Rake Compatibility<\/strong><\/p>\n

Stock and custom configurations for single-rotor, twin-rotor, and carousel rake models \u2014 including the non-standard short shaft lengths required for twin-rotor centre-delivery machines.<\/p>\n<\/div>\n<\/div>\n

Brand Compatibility & Cross-References<\/h2>\n

Direct drop-in replacement for OEM shafts on: Kuhn, Claas, P\u00f6ttinger, Kverneland, Fella, Lely, Fendt, New Holland, Vicon<\/strong>. 12,000+ cross-references verified before dispatch.<\/p>\n

\u26a0\ufe0f Brand names cited for parts-compatibility identification only. No commercial affiliation claimed.<\/em><\/p>\n

Spare parts stocked:<\/strong> S3\u2013S8 cross-kits (standard \/ IP55 \/ IP67 \/ acid-rated \/ Moly) \u00b7 Cam spring sets \u00b7 Friction disc sets \u00b7 Acid-resistant PE guards \u00b7 Retaining chains & SS straps \u00b7 Yoke collars<\/p>\n

\u2192 Browse all PTO shaft accessories<\/a><\/p>\n

Compliance & Regional Demand<\/h2>\n

Standards & Regulations:<\/strong> Standards: ISO 5673-1:2014, AS 4024.3601. Hay quality: the PTO shaft’s role in consistent rotor speed directly affects dry matter loss (field losses) which is a hay quality metric in dairy and feedlot hay supply contracts. Organic hay: no specific shaft requirements for organic certification but chemical-free machinery is implicit \u2014 standard steel\/PE materials are compatible.<\/p>\n

Key Demand Regions:<\/strong> Nationwide hay production: Riverina NSW (lucerne), Wimmera VIC (cereal hay), Darling Downs QLD, Murray Valley SA, Northam WA, Central Queensland, King Island TAS.<\/p>\n

CE Declaration, ISO material certs, and dimensional inspection reports supplied with every shaft. GST-inclusive AUD invoicing.<\/p>\n

Quick Selection Guide<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nHow to Determine<\/th>\nGuidance<\/th>\n<\/tr>\n<\/thead>\n
Rake type<\/td>\nSingle-rotor \/ Twin-rotor \/ Carousel<\/td>\nTwin-rotor: note shaft may be short \u2014 measure carefully<\/td>\n<\/tr>\n
Rake working width<\/td>\n3.0\u201312.0 m<\/td>\nWider rake = more rotor inertia = still Series 3\/4 for most models<\/td>\n<\/tr>\n
PTO speed<\/td>\n540 RPM<\/td>\nAll standard rakes<\/td>\n<\/tr>\n
Tractor size<\/td>\n40\u201375 HP typical<\/td>\nConfirm spline: most raking tractors are 1-3\/8″\u00d76<\/td>\n<\/tr>\n
Terrain<\/td>\nFlat \/ Rolling<\/td>\nRolling terrain: CV joint essential for terrain following<\/td>\n<\/tr>\n
Storage condition<\/td>\nShed \/ Outdoor<\/td>\nOutdoor: specify UV-stable guard if exposed off-season<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Installation Guide \u2014 PTO Shaft for Hay Rake<\/h2>\n
    \n
  1. [Safety]<\/strong> Engine off, handbrake. Rake tines can cause injury \u2014 keep clear of rotor during installation.<\/li>\n
  2. [Setup]<\/strong> Mount rake on 3PL or hitch; lower rotor to working position; measure shaft gap.<\/li>\n
  3. [Tractor yoke]<\/strong> Install tractor CV yoke; engage locking pin.<\/li>\n
  4. [Machine yoke]<\/strong> Install machine yoke onto rake gearbox; torque collar to 20\u201324 N\u00b7m.<\/li>\n
  5. [Travel check]<\/strong> Verify shaft through full terrain-following travel range \u2014 rakes move significantly.<\/li>\n
  6. [Guard]<\/strong> Fit lightweight half-cone guard; attach strap to tractor lower link.<\/li>\n
  7. [Initial run]<\/strong> Engage PTO at low throttle; verify rotor spinning smoothly before entering cut hay.<\/li>\n
  8. [Service]<\/strong> Grease at 8\u201316 hour intervals; inspect guard strap at each session.<\/li>\n<\/ol>\n

    \"PTO<\/p>\n

    \ufe0f Troubleshooting<\/h2>\n
    \n\u26a0\ufe0f Windrow uneven \u2014 thin patches correlating with tractor position<\/summary>\n
    \n

    Root Cause:<\/strong> Rotor speed varying with terrain \u2014 shaft angle too high at undulations<\/p>\n

    Fix:<\/strong> Check maximum terrain angle; upgrade to CV joint if >20\u00b0; reduce working speed over sharp undulations<\/p>\n<\/div>\n<\/details>\n

    \n\u26a0\ufe0f Tines throwing material too wide on one side<\/summary>\n
    \n

    Root Cause:<\/strong> Rotor speed above target \u2014 PTO engagement at full throttle<\/p>\n

    Fix:<\/strong> Engage PTO at reduced throttle; set standard 540 RPM and do not over-throttle<\/p>\n<\/div>\n<\/details>\n

    \n\u26a0\ufe0f Friction clutch slipping under light hay load<\/summary>\n
    \n

    Root Cause:<\/strong> Clutch spring tension too low; discs worn smooth<\/p>\n

    Fix:<\/strong> Increase preload slightly; replace disc set; verify correct spring-type for Series 3\/4<\/p>\n<\/div>\n<\/details>\n

    \n\u26a0\ufe0f Shaft rattling at operating speed<\/summary>\n
    \n

    Root Cause:<\/strong> Worn cross-joint with play; loose yoke collar<\/p>\n

    Fix:<\/strong> Replace cross-kit if any play detected; re-torque collar<\/p>\n<\/div>\n<\/details>\n

    \n\u26a0\ufe0f Guard strap breaking regularly<\/summary>\n
    \n

    Root Cause:<\/strong> Low-quality strap; hay material wrapping strap and applying tension<\/p>\n

    Fix:<\/strong> Replace with UV-stable reinforced strap; route strap clear of rotor trajectory<\/p>\n<\/div>\n<\/details>\n

    Australian Case Studies<\/h2>\n
    \n
    \n

    Griffith, NSW<\/p>\n

    Lucerne hay \u2014 P\u00f6ttinger HIT 690 twin-rotor rake<\/p>\n

    “”Lucerne raking requires very consistent rotor speed for even windrow density \u2014 our pickup baler is sensitive to inconsistent density. Your balanced Series 3 shaft is the first that has given us truly consistent windrows. Revenue improvement from reduced bale rejects.””<\/p>\n<\/div>\n

    \n

    Nhill, VIC<\/p>\n

    Cereal hay \u2014 Kuhn GA 6632 twin-rotor rake<\/p>\n

    “”Non-standard short shaft length for our GA 6632 twin-rotor geometry. You made the custom length in 5 days and confirmed fit. Perfect. Our hay season is now uninterrupted.””<\/p>\n<\/div>\n

    \n

    Longreach, QLD<\/p>\n

    Buffel grass hay \u2014 single-rotor side-delivery rake<\/p>\n

    “”Lightweight shaft was important \u2014 our 50 HP tractor is already at its rear axle limit with the rake. At 2.6 kg, your shaft makes no practical difference to the balance. Perfect.””<\/p>\n<\/div>\n

    \n

    Murray Bridge, SA<\/p>\n

    Vetch\/oaten hay \u2014 high-throughput raking<\/p>\n

    “”We rake 6 days a week in peak season. The 16-hour grease interval (sealed option) means we grease once per session instead of twice. Time saving adds up across a 6-week hay season.””<\/p>\n<\/div>\n

    \n

    Narrogin, WA<\/p>\n

    Annual pasture hay \u2014 Claas Liner 1550 twin-rotor<\/p>\n

    “”Very fast delivery to WA. The cross-reference confirmed fit against our Liner 1550 gearbox input spec. Fitted in 15 minutes. Zero issues across the season.””<\/p>\n<\/div>\n<\/div>\n

    \u2753 Frequently Asked Questions<\/h2>\n
    \nHow does an unbalanced PTO shaft affect hay rake windrow quality?<\/summary>\n
    A hay rake rotor turns at approximately 60\u201390 RPM (driven from 540 RPM PTO through a reduction gearbox). Any imbalance in the PTO shaft creates a vibration at 9 Hz (540 RPM) that is transmitted to the rotor gearbox and appears as a periodic variation in rotor speed at the PTO rotation frequency. This speed variation is visible in the windrow as a periodic variation in density \u2014 alternating thin and dense sections at a spacing corresponding to the shaft rotation period at working speed. For a tractor working at 6 km\/h with PTO at 540 RPM, this creates density variations at approximately 18 cm intervals \u2014 detectable by a baler’s pickup rate sensor and visible to an experienced hay contractor.<\/div>\n<\/details>\n
    \nWhat is the correct friction clutch setting for a hay rake PTO shaft?<\/summary>\n
    The clutch slip torque should be set to the rake manufacturer’s specified maximum input torque \u2014 typically 220\u2013380 N\u00b7m for standard single-rotor rakes. A correctly set clutch should slip before the rake gearbox sees damaging loads, but not during normal operation. To verify: engage PTO at idle and gradually increase engine speed; the rotor should start spinning smoothly and maintain speed at full throttle without any slipping sensation. If the clutch slips at operating speed under no load, the spring preload is too low \u2014 increase in small increments until stable.<\/div>\n<\/details>\n
    \nDo I need a CV joint on my single-rotor side-delivery rake?<\/summary>\n
    For most single-rotor 3PL-mounted side-delivery rakes working in flat to gently rolling terrain, a standard cross-joint shaft is adequate. CV joints become necessary when: (1) the rake is mounted on an articulated frame that swings widely with terrain following; (2) the 3PL geometry creates angles exceeding 20\u00b0 in typical working positions; or (3) the tractor-rake combination creates high angles at headland turns. Modern wide-spread rakes with centre-delivery twin-rotor designs almost always require CV joints due to the complex articulation geometry.<\/div>\n<\/details>\n
    \nHow long should a hay rake PTO shaft last?<\/summary>\n
    A properly maintained hay rake shaft (regular 8\u201316 hour greasing, correct length preventing tube bottom-out, clutch not over-set) should last 5\u20138 seasons of typical hay raking use. Cross-kits should be inspected for play at each season start and replaced when any play is detected \u2014 typically every 3\u20134 seasons depending on use intensity. The lightweight construction (Series 3\/4) of rake shafts means they are less expensive to replace than heavy-duty agricultural shafts \u2014 many operators choose to replace the complete shaft every 5 seasons as preventive maintenance rather than continuing to rebuild.<\/div>\n<\/details>\n
    \nCan a hay rake PTO shaft be used to drive a hay tedder?<\/summary>\n
    Yes \u2014 hay tedders have a similar load profile to hay rakes (light, consistent, rotary load) and typically use the same Series 3\/4 PTO shaft specification. Verify that the shaft length, spline specification, and clutch slip torque match the tedder manufacturer’s requirements. The main difference is that tedders may have higher working angles due to their different ground-following geometry \u2014 check that your CV joint rating is adequate for the tedder’s terrain-following range.<\/div>\n<\/details>\n

    Related Products<\/h2>\n

    Our agricultural gearboxes<\/a> pair perfectly with every shaft in our range for matched torque ratings and minimal vibration.<\/p>\n

    \n
    \"Agricultural<\/p>\n

    Agricultural Gearbox<\/p>\n

    Bevel, inline, and custom gearboxes for all PTO drive applications.<\/p>\n

    View Gearboxes<\/a><\/div>\n

    \"Cross-Kits\"<\/p>\n

    Cross-Kits & Clutch Parts<\/p>\n

    All series cross-kits including acid-rated, Moly-packed, and frost-start greased options.<\/p>\n

    View Parts<\/a><\/div>\n

    \"Specialty<\/p>\n

    Specialty Guards & Seals<\/p>\n

    Acid-resistant, UV-stabilised, tropical-grade, and heavy-wall PE guards; wiper seals; SS strap kits.<\/p>\n

    View Guards<\/a><\/div>\n<\/div>\n

    Partner with Us<\/h2>\n
    \n

    Source Your PTO Shaft for Hay Rake \u2014 Same-Day Dispatch Available<\/h3>\n