TWI510726B

In a disc brake for a railway vehicle using a floating brake caliper, a lining held by a caliper arm on a side on which a pressing drive source is not provided includes: a friction member facing a frictional surface of a disc fixed to a wheel or an axle of the railway vehicle; a base plate holding the friction member on a front surface; and a guide plate fixedly provided at the center of a back surface of the base plate, and accommodated in a concave portion of the caliper arm, the front surface of the base plate is in parallel to a frictional surface of the friction member, a thickness of the base plate is larger on a side corresponding to an inner circumferential side than on a side corresponding to an outer circumferential side, a thickness of the guide plate is smaller than a depth of the concave portion of the caliper arm, and in a state in which the frictional surface of the friction member faces the frictional surface of the disc in parallel, the guide plate is fitted, with play, into the concave porti