For PTO shaft guards, check that the guard is:


  • made to a recognised standard such as BS EN ISO 5674;
  • the correct size and length for the shaft, both when closed and when extended;
  • a non-rotating type, with the restraining device (for example, securing chains) in place;
  • properly used and maintained. Clean and lubricate guards regularly;
  • supported when not connected. Do not rest it on the drawbar or drop it on the ground, and do not suspend it by the restraining device;
  • safe from damage, for example, by livestock, when the machine is in store.


Make sure no one uses adaptors to allow a 21 spline 1000 rpm shaft to drive a 6 spline 540 rpm shaft.                                                                                                

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4R Reassurance can source and supply PTO Guards for your machinery