GEAR DEVICE FOR ROLLING STOCK

PROBLEM TO BE SOLVED: To improve the working efficiency at assembling time, to provide high reliability for strength and the service life to a thrust load caused by a helical gear, and to restrain vibration and noise generated by precession caused by the looseness of bearing clearance at no-load and light load time. SOLUTION: In this gear device for a railway rolling stock, one end side of at least one shaft of a wheel shaft 3c for installing a small gear shaft 3a and a large gear 3b is rotatably supported by a double row conical roller bearing 11 or two single row conical roller bearings made different in the direction of conical rollers, and the other end side is rotatably supported by a cylindrical roller bearing 3h. Thus, the working efficiency at assembling time can be improved more than a conventional device, and the reliability for the strength and the service life to the thrust load by the helical gear can be improved. The vibration and the noise by the precession caused by the looseness by the bearing clearance at no-load time and light load time can be restrained, and comfortableness of a passenger can be improved, and the reliability can be enhanced.