The TA-110 is given a precision-machined slit in the middle of the aluminium tube, and a piece of Ortofon’s special vibration damping rubber is inserted into the slit. An armtube without slit and rubber damper is symmetrical in the vertical and lateral planes, with respect to vibrations. By placing a slit in the tube, the TA-110 breaks this symmetry, and then mounting the rubber insert gives the desired damping.
The effects of this seemingly simple process are notable, Please see the below illustration of the stresses in the armtube. The blue color indicates non-stressed areas, and the yellow/orange emphasises the more stressed parts. It is clear, that the TA-110 armtube is a lot less stressed than the standard tube used in the TA-100.