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The term bearing cup can refer to different components depending on the type of bearing system:

  1. In Ball or Roller Bearings:
  • Definition: The bearing cup is the outer race of a ball or roller bearing. It forms the curved surface that surrounds the balls or rollers and is usually located inside a bearing housing or hub assembly.
  • Function: It provides a smooth, hardened surface for the balls or rollers to rotate against, helping to distribute the load and maintain alignment within the bearing assembly.
  1. In Automotive and Machinery:
  • Definition: Sometimes used to refer to the retainer or bearing shell that holds the bearings in place within a housing or assembly.
  • Function: These retainers or shells are typically secured by bolts and nuts and serve to hold the bearings securely in position, preventing movement and maintaining alignment.

Key Points:

  • Types: Bearing cup can refer to the outer race of a ball or roller bearing, or to retainers or shells that secure bearings within their housing.
  • Components: Depending on context, it could denote the outer part of a ball or roller bearing assembly or the components that secure bearings within machinery or automotive assemblies.
  • Applications: Found in automotive wheel hubs, industrial machinery, and various mechanical systems where bearings are used to support rotating shafts and reduce friction.

Understanding these distinctions helps in selecting and maintaining the appropriate components for specific applications, ensuring reliable performance and longevity of bearings and their assemblies.

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