A chip removing device in a band saw that removes, using a brush, chips adhered to a band saw blade that rotates while being wound around a driving wheel and a follower wheel rotatably supported by a saw blade housing, the chip removing device comprising: a pair of brush support bodies (61A,B) that pivotally support a brush shaft (59A,B) having a brush (57A,B) that can come into contact with both side surfaces of a blade tip of the band saw blade; a rotating and driving mechanism that simultaneously rotates and drives the pair of brushes, wherein the brush shaft (59A,B) can rotate and drive, and the rotating and driving mechanism simultaneously rotates and drives the pair of brush shafts (59A,B) pivotally supported by the pair of brush support bodies (61A,B), characterized in that said rotating and driving mechanism comprises a brush-driving geared motor to rotate the brush shafts (59A,B); a removing biasing unit is provided that can bias the brush support bodies (61A,B) in a direction approaching the band saw blade with a substantially constant pressing and can bias the brush support bodies (61A,B) in a direction separating away from the band saw blade; and a wear detector is provided that detects a reduction in diameter of the brush (57A,B) caused by wear as a variation of the brush support body (61A,B) in a direction approaching the band saw blade, wherein the brush support body (61A,B) and the brush shaft (59A,B) are provided such that they can rock in the direction approaching the band saw blade and in the direction separating away from the band saw blade, the band saw blade is sandwiched with substantially constant pressing force with respect to the pair of brushes (57A,B), and the wear detector comprises a proximity sensor and a to-be detected shaft, a position of the proximity sensor is set such that a gap between the to-be detected shaft and proximity sensor comes into a detection range when one or both brushes (57A,B) are worn to their using limit. a pair of brush support bodies (61A,B) that pivotally support a brush shaft (59A,B) having a brush (57A,B) that can come into contact with both side surfaces of a blade tip of the band saw blade; a rotating and driving mechanism that simultaneously rotates and drives the pair of brushes, wherein the brush shaft (59A,B) can rotate and drive, and the rotating and driving mechanism simultaneously rotates and drives the pair of brush shafts (59A,B) pivotally supported by the pair of brush support bodies (61A,B), characterized in that said rotating and driving mechanism comprises a brush-driving geared motor to rotate the brush shafts (59A,B); a removing biasing unit is provided that can bias the brush support bodies (61A,B) in a direction approaching the band saw blade with a substantially constant pressing and can bias the brush support bodies (61A,B) in a direction separating away from the band saw blade; and a wear detector is provided that detects a reduction in diameter of the brush (57A,B) caused by wear as a variation of the brush support body (61A,B) in a direction approaching the band saw blade, wherein the brush support body (61A,B) and the brush shaft (59A,B) are provided such that they can rock in the direction approaching the band saw blade and in the direction separating away from the band saw blade, the band saw blade is sandwiched with substantially constant pressing force with respect to the pair of brushes (57A,B), and the wear detector comprises a proximity sensor and a to-be detected shaft, a position of the proximity sensor is set such that a gap between the to-be detected shaft and proximity sensor comes into a detection range when one or both brushes (57A,B) are worn to their using limit.