OEM Driveshaft Design Guide
To Eliminate PTO Adaptors
NOTE: This Guide may be downloaded and reproduced for non-commercial usage.
Agriculture is recognized as one of the more hazardous occupations. Today's farmer spends long hours in close proximity to increasingly complex and powerful machinery. In order to avoid accidents, everyone from the component suppliers, to the company who manufactures and assembles the machinery, to the dealers and ultimately the actual user must keep safety in mind.
PTO adaptors have been used for many years to connect unmatched splines of tractor PTO shafts to implement PTO driveshafts. ADMA advises against the use of PTO adaptors which may defeat the purpose of the tractor's master shield and adversely affect the performance of the PTO driveshaft. International safety standards state, "No device (e.g. adaptors) shall be installed between the tractor PTO shaft and the primary PTO driveshaft."
ADMA is concerned that PTO driveshafts be used in the safest possible manner. This OEM Design Guide contains safety information directly related to the PTO driveshafts of agricultural implements. More information may be found in general safety literature and in the relevant standards published by the American Society of Agricultural and Biological Engineers (ASABE), the Canadian Standards Association (CSA), the International Standards Organization (ISO) and the Society of Automotive Engineers (SAE).