  We study the spontaneous chiral surface current circulating in a
three-dimensional disk of a chiral superconductor (SC) utilizing the
quasiclassical Eilenberger theory. We obtain spatial profiles of the chiral
current for both a ($d_{zx} + i d_{yz}$)-wave and a ($p_{x} + i p_{y}$)-wave
SCs (where the top and bottom surfaces of the disk are perpendicular to the
$z$-axis). Whereas the chiral current for a ($p_{x} + i p_{y}$)-wave SC does
not depend on $z$, a reversal of the chiral current takes place at the top and
bottom surfaces in the case of a ($d_{zx} + i d_{yz}$)-wave SC. In this latter
case, flat-band Andreev bound states appear at the top and bottom surfaces in
addition to the chiral surface states at the lateral surface. The chiral
current reversal is explained in terms of hybridization between the two types
of Andreev bound states. As a result, the magnetic field around the disk
differs drastically between the two cases.
