An ice bin for a refrigerator appliance, the ice bin includes a storage body. An auger, rotatably driven by an auger motor, extends within the storage body and has first and second ends. The auger is rotatably driven about a first axis. A first crusher roller is disposed at the second end of the auger and is coupled thereto to rotate together with the auger about the first axis. A second crusher roller is disposed on an axle extending along a second axis, the second crusher roller is freely rotatable about the axle. The second crusher roller is movable between a first position and a second position. When the second crusher roller is in the first position, the first crusher roller and the second crusher roller are spatially arranged and configured to grind the produced ice pieces into crushed ice.