The TA-110 armtube is a lot less stressed than a conventional armtube

TA-110 with rubber insert.png Play

Please see the below illustration of the stress in the armtube. Blue color is non-stressed and yellow/orange emphasises the more stressed parts. It is clear, that the TA-110 armtube is a lot less stressed than the standard tube applied in the TA-100.

TA-100 1,8 kHz vertical mode TA-110 1,8 kHz vertical mode
TA-100 1,8 kHz lateral mode TA-110 1,8 kHz lateral mode