CSF CSG PDF - Harmonic Drive LLC

LubricationGrease ChangeThe wear characteristics of the gear are strongly influenced by thecondition of the grease lubrication. The condition of the grease isaffected by the ambient temperature. The graph shows the maximumnumber of input rotations for various temperatures. This graph appliesto applications where the average load torque does not exceed therated torque.Note: Recommended Grease: SK-1A or SK-2In cases where the rated torque is exceeded, calculate the greasechange interval using the equation shown below.Equation where average load torque exceeds rated torque[Equation 9]L GT = L GTn X ( Tr ) 3TavSymbol of EquationGrease change (over rated torque), input rotationsL GTL GTnT rT avGrease change (below rated torque), input rotations (From Graph)Rated TorqueAverage load torque on outputNumber of Rotations10 10Grease Change Interval for Tav < Tr LGTnGrease Life4B No.210 9SK-1ASK-210 8Wave Generator Life10 720 40 60 80 100 120Grease Temperature (Cº)23