Combined Bearings Roller and Oil Film Bearings Housed in a Single Unit

Controls BDC Variations Caused by Speed Change

  • In high speed presses the bottom dead center position of the slide will change as the press speed goes up or down
  • AIDA developed the combined bearing to eliminate shaft movement in the bearings
  • Using roller bearings holds the shaft center concentric with the press bearing center regardless of press speed
  • To absorb the stamping shock an oil film bearing is combined with the roller bearings
  • Through a slightly off-set design the oil film is compressed by the shaft rotation and becomes the load carrying member at relatively low speed
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