PTO Shaft, Series 4, 1-3/8″ x 6 Spline and 1-3/8″ Smooth Round Yokes

Transfer high amounts of energy between large machinery with a PTO shaft. This series 4 PTO shaft assembly contains a yoke that measures 1-3/8 – 6 spline end x 1-3/8 smooth round hole. The other end has a shield provided as a safety feature.


This series 4 PTO shaft features a retracted length and extended length to use for different sized applications. The retracted overall length measures 42.5 inches and the extended length measures 55.3 inches. It has a PTO horsepower of 35 at 540 RPM and a horsepower of 55 at 1000 RPM, and operates in a rotational motion when transferring the power. As an important safety precaution, be sure to shield any additional rotating parts and do not wear loose accessories, which could become entangled and pulled into the machine.


  • PTO Shaft Assembly
  • Series 4
  • Extended safe overall length: 55.3 in.
  • Retracted overall length: 42.5 in.
  • 1-3/8 – 6 spline end x 1-3/8 smooth round hole
  • Outer tubing: 3.3 mm
  • Inner tubing: 4.4 mm
  • Implement end has a 13 mm hole for a 1/2″ shear bolt
  • Shear bolt not included, use ASC # 76004
  • 35 HP at 540 RPM
  • 55 HP at 1000 RPM
  • Series 4 cross kit compatibility: 27 mm diameter x 74.6 mm width

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