TITLE

Preventing Damage to Motor Bearings

AUTHOR(S)
Oh, William
PUB. DATE
April 2007
SOURCE
Heating/Piping/Air Conditioning Engineering;Apr2007, Vol. 79 Issue 4, p46
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The article presents a guideline on preventing electrical destruction to motor bearings of variable frequency drives (VFD). The shaft current induced into the drives must be diverted from the bearings by insulation or an alternate path to ground. Insulating material, usually a nonconductive resin or ceramic layer, isolates bearings and prevents shaft current from discharging. Conductive grease can also be applied to bearings, which provides a lower-impedance path.
ACCESSION #
25080155

 

Related Articles

  • Getting more life from roller chain. Hogan, Michael // Motion System Design;May2011, Vol. 53 Issue 5, p7 

    The article offers information on the mechanics of wear and the options for maximizing the life of roller chains. It states that chain extends due to wear between the pin and bushing, therefore replacement of chain is suggested when it reaches 1.5 percent elongation. It mentions that in...

  • A Review of Lubrication Conditions for Wear Simulation in artificial Hip Replacements. . Brown, Sharon S.; Clarke, Ian C.; Lindas, Loma // Tribology & Lubrication Technology;Oct2006, Vol. 62 Issue 10, p54 

    It is essential to evaluate the wear behavior of joint replacement materials and designs. While synovial fluid is the biological joint lubricant, it is present in too small quantities to use for wear simulations. A variety of lubricants have been used, such as water, saline solutions, synovial...

  • Determining of the wear traces for sliding couplings. PETRE, Ivona Camelia; CÎRSTOIU, Carmen Adriana // Applied Mechanics & Materials;2015, Vol. 811, p80 

    Abrasion wear is a mechanical process when the surfaces of a friction coupling decay and which occurs with material removal from the softer surfaces that get into contact with the asperities of the harder surface located in the space between the coupling elements. The paper aims to determine the...

  • Mechanical Carbon Parts Solve Tricky Lube Problems. Phelps, Glenn H. // Power Engineering;Feb2009, Vol. 113 Issue 2, p48 

    This article considers mechanical carbon parts as a solution for moving machine parts where rubbing must occur with low wear and low friction and where oil-grease lubrication cannot be used. The two categories of mechanical carbon applications include dry running and submerged applications....

  • Morphology investigation of worn bearing surfaces using SiO nanolubrication system. Sia, Shang; Sarhan, Ahmed // International Journal of Advanced Manufacturing Technology;Feb2014, Vol. 70 Issue 5-8, p1063 

    The new technology that uses nanoparticles as additive of lubricant has become an attractive study recently. The performance of nano-SiO which acts as the nanoparticle in the lubrication system is investigated. Tests were conducted at nanolubrication mixing ratio of 0.0, 0.1, 0.2, 0.5, 0.55,...

  • Effect of oil rheology and chemistry on journal-bearing friction and wear. Warrens, C.; Jefferies, A. C.; Mufti, R. A.; Lamb, G. D.; Guiducci, A. E.; Smith, A. G. // Proceedings of the Institution of Mechanical Engineers -- Part J;May2008, Vol. 222 Issue 3, p441 

    Legislation and market pressures are calling for increased engine power, reduced engine size, and improved fuel consumption. The use of low-viscosity lubricants is considered as a means to enhance fuel economy by reducing viscous friction, particularly in engine bearings. Journal bearings mostly...

  • What's Tribology? Gresham, Bob // Tribology & Lubrication Technology;Aug2007, Vol. 63 Issue 8, pP2 

    The article discusses issues related to tribology. Early lubrication engineers have learned about real and apparent areas of contact, which lead to understanding asperities and wear processes. They also have learned about the significance of contact surfaces, plastic deformation and contact...

  • Calculation of film thickness oil and distribution of pressure in the EHL line contacts. Muminovic, Adil; Repcic, Nedzad; Colic, Mirsad // TTEM- Technics Technologies Education Management;2010, Vol. 5 Issue 2, p278 

    Term elastohydrodynamic lubrication (EHL) means a mechanism of lubrication of the different machine systems such as gears, bearings, etc. For the case of contacts, which works in the EHL mode, the force is transmitted through a thin oil film. Formed oil film separates the contact bodies, which...

  • How is your grease doing?  // DEMM: Engineering & Manufacturing;Nov2011, p37 

    The article discusses the importance of scheduling grease replacement and monitoring on rolling bearings. It is noted that grease replacement can reduce downtimes as well as the cost for lubricants, maintenance, and replacement parts. The author further cites the development of a grease sensor...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics