PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower
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PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish MowerPTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower

PTO Shaft 1-3/8" 6 Spline Series 4 Tractor Driveline, 39"-55" Adjustable for Brush Hog Finish Mower

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$126.90 USD $150.00 USD
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In stock (100 units), ready to be shipped

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Description

PTO Shaft 1-3/8" 6 Spline Series 4 — Heavy-Duty Adjustable Driveline for Tractors & Implements

When your brush hog, finish mower, or rotary cutter needs a reliable power connection, a worn or mismatched PTO shaft can bring your whole operation to a halt. This Series 4 PTO driveline shaft is built for farmers, landowners, and equipment operators who demand consistent torque transfer without the worry of premature failure.

Constructed from Q345 steel tubing with a solid 20CrMnTi carburized steel universal joint, this shaft features a 1-3/8" (35 mm) 6-spline tractor end and a round implement end. The telescoping design adjusts from 39" (1,000 mm) compressed to 55" (1,400 mm) extended, accommodating a wide range of tractor-to-implement distances.

Ideal for Series 4 PTO applications including brush hog PTO shaft replacement, finish mower driveline upgrades, and rotary cutter power transmission — this shaft delivers 35 HP / 460 Nm torque at 540 RPM and 53 HP / 360 Nm at 1,000 RPM, making it a versatile fit for mid-size agricultural equipment.

✅ Compatible with 1-3/8" 6-spline tractor PTOs and round-end implements — brush hogs, finish mowers, rotary cutters, tillers, and other Series 4 agricultural equipment

✅ Key Features of This Series 4 PTO Drive Shaft

  • 🔩 CE-Certified Series 4 Construction: Forged with a solid 20CrMnTi carburized steel universal joint and Q345 steel tube inside the shield — built to handle demanding field conditions with long-term durability.
  • ⚙️ 1-3/8" 6-Spline to Round End: Standard 6-spline tractor end pairs with a round implement end, providing a secure, rattle-free fit for most brush hog and finish mower applications.
  • 📏 Adjustable 39"–55" Length: Telescoping steel tube design compresses to 39" / 1,000 mm and extends to 55" / 1,400 mm — no cutting or custom fabrication required for most setups.
  • 💪 High Torque Output: Rated at 35 HP / 26 kW / 460 Nm at 540 RPM and 53 HP / 39 kW / 360 Nm at 1,000 RPM — handles mid-size tractor workloads without slipping or overheating.
  • 🛡️ Safety Shield & Security Chain: Includes a full-length protective shield and security chain to reduce entanglement risk and meet standard safety requirements for PTO-driven equipment.
  • 🔧 Direct Replacement, Easy Assembly: Designed as a drop-in replacement for worn Series 4 PTO shafts — no special tools needed, straightforward installation for quick field-side swaps.

📦 What's in the Box

  • 1× Series 4 PTO Drive Shaft (1-3/8" 6-Spline × Round End, 39"–55" adjustable)
  • 1× Full-length protective shield with security chain

🎯 Who Is This For?

🚜 Brush Hog & Rotary Cutter Operators

Replacing a worn or broken PTO shaft on a bush hog or rotary cutter? This Series 4 shaft fits standard 1-3/8" 6-spline connections and handles the torque demands of heavy brush clearing.

🌾 Finish Mower Users

Need a reliable driveline for a finish mower on a compact or utility tractor? The adjustable length and round implement end make this a straightforward fit for most finish mower setups.

🏡 Landowners & Hobby Farmers

Maintaining pastures, fields, or large properties with a mid-size tractor? This shaft provides the power transmission you need without the dealer markup of OEM replacement parts.

🔧 Equipment Repair & Parts Sourcing

Sourcing a Series 4 PTO shaft for a customer repair or parts inventory? CE-certified construction and standard dimensions make this a dependable aftermarket option.

📐 Technical Specifications

Series Series 4
Tractor End 1-3/8" (35 mm) — 6 Spline
Implement End Round End
Compressed Length 39" / 1,000 mm
Extended Length 55" / 1,400 mm
Torque @ 540 RPM 460 Nm / 35 HP / 26 kW
Torque @ 1,000 RPM 360 Nm / 53 HP / 39 kW
Tube Material Q345 Steel
Universal Joint Material 20CrMnTi Carburized Steel
Finish / Color Black
Certification CE Certified
Product Weight 22.75 lbs (10.32 kg)
Assembled Dimensions 39.46" L × 5.41" W × 5.80" H
Package Dimensions 39.96" L × 5.91" W × 6.30" H
Package Weight 24.25 lbs (11.00 kg)

❓ Frequently Asked Questions

What tractors is this PTO shaft compatible with?

This shaft is designed for tractors with a standard 1-3/8" 6-spline PTO output. It is compatible with most compact and utility tractors from brands such as John Deere, Kubota, Massey Ferguson, New Holland, and others that use this standard connection. Always verify your tractor's PTO spline count and diameter before ordering.

What implements does the round end fit?

The round implement end is designed to fit implements with a corresponding round-bore yoke. This typically includes many brush hogs, finish mowers, rotary cutters, and tillers. Check your implement's input shaft specification to confirm compatibility before purchase.

What is the difference between Series 3 and Series 4 PTO shafts?

Series 4 shafts are rated for higher torque and horsepower than Series 3. Series 4 is generally used on implements requiring up to approximately 35–53 HP, while Series 3 is suited for lighter-duty applications. Always match the shaft series to your implement's rated input requirements.

Can I use this shaft at both 540 RPM and 1,000 RPM?

Yes. This shaft is rated for both 540 RPM (35 HP / 460 Nm) and 1,000 RPM (53 HP / 360 Nm) operation. Ensure your tractor and implement are set to the correct PTO speed for your application.

How do I measure the correct PTO shaft length for my setup?

Measure the distance from your tractor's PTO output to your implement's input shaft with the implement in its working position. The shaft should be at roughly mid-extension during operation — not fully compressed or fully extended. This shaft adjusts from 39" to 55", so it is suitable for setups within that range.

Is the safety shield included, and is it required?

Yes, a full-length protective shield and security chain are included. The shield is strongly recommended for safe operation — it reduces the risk of entanglement with the rotating shaft. Many regions also require PTO shields by law or safety regulation when operating agricultural equipment.

What does CE certification mean for this PTO shaft?

CE certification indicates that this product meets European safety, health, and environmental protection standards. For PTO shafts, this typically covers mechanical safety requirements including the protective shield design. It is a widely recognized quality and safety benchmark for agricultural driveline components.

How do I install this PTO shaft?

Slide the 6-spline end onto your tractor's PTO output shaft until it clicks into place. Connect the round end to your implement's input yoke and secure it. Attach the security chain from the shield to a fixed point on the tractor or implement to prevent the shield from rotating. Always disengage the PTO and shut off the tractor before making any connections or adjustments.

🛒 Add to cart above and get your Series 4 PTO shaft shipped fast.

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