BEARING DEVICE FOR RAILROAD VEHICLE

• Main Author: ABE SHIGEAKI
• Format: Patent
• Language: English
• Published: 11.11.2004
• Edition: 7
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PREVENTING DERAILING OF RAIL VEHICLES; RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES ORARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; RAILWAYS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAILVEHICLES

PROBLEM TO BE SOLVED: To provide a bearing device for a railroad vehicle, capable of surely preventing belly abutting without complicating the shape of a seal member, and elongating the life of grease. SOLUTION: This bearing device 10 for the railroad vehicle is provided with a bearing 11 to be imposed radial load, in a bearing part. The bearing 11 includes: an inner ring 14 into which a rotating shaft is internally engaged; an outer ring 16; a plurality of rolling elements 18 rotatably arranged between the inner ring 14 and the outer ring 16; a holder 19 for rotatably holding the rolling elements 18; and a sealing device 13 having a seal member 29 sliding on a rotating shaft side member 22. Air holes 28b, 22c are formed in the rotating shaft side member 22 to communicate a sealed space formed between the seal member 29 and the rotating shaft side member 22 by the seal member 29 with a bearing space of the bearing 11. COPYRIGHT: (C)2005,JPO&NCIPI