  Calorons are finite action solutions to the anti-selfdual Yang-Mills
equations on $\mathbb{R}^3\times S^1$. They are generally constructed by the so
called Nahm construction. We perform the numerical Nahm transform for the Nahm
data of 3-calorons with $C_3$-symmetry, which do not have the monopole limits.
Dissimilar to the cases of having monopole limits, we can trace the
zero-circumference limit of $S^1$.It is found that the action density of the
calorons tends to fade away as $S^1$ shrinks.
