PROBLEM TO BE SOLVED: To provide a brake device for railway rolling stock which is capable of performing a brake actuation, optionally performing a slip preventing actuation, and which is simple in the constitution, reduced in the number of part items and light in weight.
SOLUTION: This brake device is a brake with slip prevention function for railway rolling stock which brakes a wheel 11. The device is provided with a pressure intensifying cylinder 31 generating hydraulics for which pressure intensifying is performed by receiving pneumatic supply from a pneumatic source (air reservoir 6) and a hydraulic brake cylinder 21 driving a brake block 15 by receiving the hydraulic supply from this pressure intensifying cylinder 31. Further, the device is provided with an exhaust valve 49 and a pneumatic supply stop valve 53 quickly reducing pneumatics of the pressure intensifying cylinder 31 and a slip preventing controller detecting the slip of the wheel 11 and controlling the exhaust valve 51. Further, the device is provided with a servo pump 207 supplying hydraulics to the hydraulic cylinder 21.