A rack comprising: a storage shelf which has: a pallet base which is set movable in a loading/unloading direction and on which a pallet for loading with goods is placed; and an arm (31; 31a, 31b) which is fixed to a support post (20a, 20b) and supports the pallet base from a lower surface side of the pallet base; and a seismic-isolation device for a rack, which is installed between the arm of the storage shelf and the pallet base, the seismic-isolation device for a rack comprising: a rail bearing which is set on a lower surface side of the pallet base; and a support member which is set on the arm and supports the rail bearing, wherein: the rail bearing has a first inclined surface and a second inclined surface which are formed on a lower surface side of the rail bearing; the first inclined surface is inclined upward from one end toward the other end in the loading/unloading direction; the second inclined surface is inclined upward from the other end toward the one end in the loading/unloading direction; the support member has a support surface that comes in sliding contact with the first inclined surface and the second inclined surface, characterised in that: the support surface which comes in sliding contact with the first inclined surface and the second inclined surface has a shape that is obtained by cutting a cylindrical shaft at the top by a plane perpendicular to a radial direction. a storage shelf which has: a pallet base which is set movable in a loading/unloading direction and on which a pallet for loading with goods is placed; and an arm (31; 31a, 31b) which is fixed to a support post (20a, 20b) and supports the pallet base from a lower surface side of the pallet base; and a seismic-isolation device for a rack, which is installed between the arm of the storage shelf and the pallet base, the seismic-isolation device for a rack comprising: a rail bearing which is set on a lower surface side of the pallet base; and a support member which is set on the arm and supports the rail bearing, a rail bearing which is set on a lower surface side of the pallet base; and a support member which is set on the arm and supports the rail bearing, wherein: the rail bearing has a first inclined surface and a second inclined surface which are formed on a lower surface side of the rail bearing; the first inclined surface is inclined upward from one end toward the other end in the loading/unloading direction; the second inclined surface is inclined upward from the other end toward the one end in the loading/unloading direction; the support member has a support surface that comes in sliding contact with the first inclined surface and the second inclined surface, characterised in that: the support surface which comes in sliding contact with the first inclined surface and the second inclined surface has a shape that is obtained by cutting a cylindrical shaft at the top by a plane perpendicular to a radial direction. the rail bearing has a first inclined surface and a second inclined surface which are formed on a lower surface side of the rail bearing; the first inclined surface is inclined upward from one end toward the other end in the loading/unloading direction; the second inclined surface is inclined upward from the other end toward the one end in the loading/unloading direction; the support member has a support surface that comes in sliding contact with the first inclined surface and the second inclined surface, characterised in that: the support surface which comes in sliding contact with the first inclined surface and the second inclined surface has a shape that is obtained by cutting a cylindrical shaft at the top by a plane perpendicular to a radial direction.