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Advice for Installing Bearings
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Spherical roller bearings with a lubrication groove and three lubrication holes in the outer ring should be oriented correctly when mounting inside the machine to ensure an adequate amount of lubricant in the bearing's outer-ring raceway. Make certain the lubrication hole is not in the 6 o'clock position. Otherwise, the lubricant will drain out and reduce the level of lubricant inside the bearing. (Veera Anantaratikun, SKF)
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Translucent new oil is visually assumed to be clean but many times contains more contamination than the existing oil being replaced. Find out why, plus the critical proactive maintenance step to assure the new oil is clean.
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Viscosity is the single most important physical property of a lubricant. It is affected by contaminants in the oil, very high pressure, extreme heat, volatilization and shearing forces. Find out what a synthetic gear oil with a high viscosity should feel like as well as possible applications and recommended oil analysis tests.
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When the Luneta Sight Glass launched, we promised more sizes were coming. We're thrilled to deliver on that promise. Four new sizes are now available with the same proven benefits you've come to expect from Luneta.
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PTE is your resource for technical information on gears, bearings, couplings, motors and motion control. Subscribe today so you won't miss out on our upcoming issues on bearings, software, gearmotors, chain drives and more.
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Monitoring Grease-lubricated Parts
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From the "Wear Particle Atlas":
The movement of wear particles in a grease-lubricated part is restricted to the region where the active grease is located. Therefore, a basic problem in monitoring grease-lubricated parts is that the sample measurement of the concentration of an element in the bulk grease provides no information regarding the wear rate; the concentration of wear particles is not uniform throughout the grease and varies with the place from which the grease was sampled.
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Silica dust is a common contaminant, yet many lubrication professionals give it little thought. These particles can quickly cause significant wear. Learn how to keep them out in Noria's Machinery Lubrication I (ML I) course.
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