Cardan Shafts for Industrial Applications - Dana

Technical instructions for applicationIn such arrangements, the individualyoke positions and deflectionangles should be adjustedwith regard to one another insuch a way that the degree ofnon-uniformity (see Generaltheoretical instructions) and thereaction forces acting on theconnection bearings (see Technicalinstructions for application)are minimized.Load on bearings of the connectedunitsAxial forcesFor the design of a cardan shaft,it must be taken into account thataxial forces can occur. Theseforces must be absorbed by axialthrust bearings of the connectedunits.1. Frictional force F RLThis is the force that occursin the length compensation.It can be determined from:mF RL = T · · cos br mF RL = Frictional force from thelength compensation [N]It depends on:T = Torque of the cardanshaft [Nm]r m = Pitch circle radius in thesliding parts of the cardanshaft [m]m = Friction coefficient (dependson spline treatment):• 0,08 for plastic-coatedsplines• 0,11 for steel/steel (greased)b = Operating deflection angleAxial forces will occur duringlength variations in the cardanshaft. Additional axial forces arecaused by increasing torque andby increasing pressure duringlubrication of the splines. Theseforces will decrease automaticallyand can be accelerated by theinstallation of a relief valve.2. Power F pThis force occurs in the lengthcompensation due to the increasingpressure in the lubricationgrooves of the cardan shaft.The force depends on the lubricationpressure (maximum permissiblepressure is 15 bar).The axial force A k is a combinationof two components:Dana’s environmental protection management policyAn important feature of Dana’s environmental protectionmanagement policy is dedication to product responsibility.Because of this commitment, the effect of cardan shafts onthe environment is given considerable attention. SPICER ®GWB TM cardan shafts are lubricated with lead-free grease,their paint finishes are low in solvents and free of heavy metals,and they are easy to maintain. After use, they can beintroduced into the recycling process.45