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Converting motors from horizontal to vertical mount

  • September 2018
  • Number of views: 347
  • Article rating: No rating

Tom Bishop, P.E.
EASA Senior Technical Support Specialist

Occasionally an end user wants to take a motor designed for horizontal mounting and use it in a vertical position. In this article, we will address some of the key mechanical factors that should be considered when applying a horizontal ball bearing motor in a vertical mounting position. Figure 1 illustrates a horizontal motor in a vertical shaft down position.

Image
These key factors include:

  • Axial thrust load capacity of bearing supporting rotor weight
  • Rotor weight
  • Weight of output shaft attachments
  • Axial thrust from direct connected driven equipment
  • Bearing lubrication paths
  • Bearing lubricant retention
  • Shaft up or shaft down orientation
  • Ingress protection
  • Locking axial thrust bearing

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