We supply spare parts for Heavy Equipment, which are mainly used on Engine, Hydraulic & Electronic Systerm, and Undercarriage, covering almost the whole machine. Excavator Spare Parts including Bearings, Gears, Seal kits, Engine Parts, Motors, Pumps, Solenoids, Valves, etc. There would be some other suffix numbers at the bearing number, for example, A, WSA, etc., but they share the same dimensions which can be assembled on the machine and running in the same way. It is kind of ball type structure, which is used in the travel reduction. It is the biggest bearing that located on the upper part of the reduction. The dimension is 196*241*26 mm (ID*OD*THK). The shipment can reach to most of the countries of the world, please contact us if there is no option for your destination..syi