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Sleeve Bearing to Ball / Roller Bearing Conversion Procedures and Cautions

  • December 2020
  • Number of views: 13561
  • Article rating: 5.0

Chuck Yung
EASA Senior Technical Support Specialist

There are times when an application calls for a motor to carry a radial load for which sleeve bearings are not suitable. In cases such as low rpm, unusual frames, etc., it may be desirable to convert a customer's existing sleeve bearing motor rather than obtaining a ball/roller replacement motor. This article contains suggested procedures as well as cautions about potential problems with such conversions.  

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First, inspect the end brackets to ensure they are mechanically rigid enough to support the load and suppress vibration (see Figure 1). If the end brackets lack rigidity, it may be  necessary to use complete fabricated replacements using thicker material. In other cases, gusseting can be used to stiffen the existing bracket.

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ANSI/EASA AR100

More information on this topic can be found in ANSI/EASA AR100
  • Section 2: Mechanical repair

EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 8: Bearings

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 10: Bearings & Lubrication

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 10: Bearings & Lubrication

Mechanical Repair Fundamentals of Electric Motors
  • Section 5: Bearings
  • Section 6: Bearing Housing, Shaft Openings, Seals & Fits

Related articles

Tags: Sleeve bearings Ball bearings Roller bearings
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