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• 511.. 512.. 513.. 514.. - single-direction single-row With a bearing version equipped with a spherical ring or rings we use spherical washers of the following series: • U2.. U3.. U4.. If we provide the washer’s designation together with bearing symbol, we add “U” at the end of the symbol. If the washer is an individual part, we quote U2..or U3.. and then the symbol of the inside diameter, e.g. a bearing with a washer: 53209 U, a washer alone: U209. DIMENSION ACCURACY Standard accuracy class for thrust ball bearings is the P normal class. Most types are also available in the P6 and also in P5 accuracy classes. STRUCTURE All types of thrust ball bearings are detachable. Single-direction thrust ball bearings consist of an inner ring mounted on the shaft, and outer ring seated in the bearing mounting and a cage with balls. Double-direction bearings consist of an inner ring mounted on the shaft, and two outer rings seated in the bearing mounting and two cages with balls. Outer rings of thrust ball bearings can have alternatively either flat or spherical mounting surface. |
DIMENSION SERIES 
