Articles About oil shear
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Tucked away in the southwest quadrant of the state of Georgia, amid stately pine stands, pecan farms and cotton fields, sits Oak Crest Lumber.
Oil shear brake technology is the key to quick and reliable test stand development.
Cement Backer Board Plant Utilizes Oil Shear Clutch Brake
An independent cheese packager in central Wisconsin packages millions of pounds of cheese every year. Whether shredded, sliced, crumbled or waxed, each package is designed specifically for a customerâ™s unique needs. As a âœtoll processor,â production line speed is critical to productivity as well as profitability.
The scene is serene and picturesque. Sunshine reflects off the light chop of the Ohio River, as a barge winds its way into view. While those driving along Louisvilleâ™s River Road may be inclined to reach for a camera to capture this idyllic scene, the mood at Nugent Sand Company is anything but tranquil.
Latest Product News
Third-quarter earnings confirmed the worst-case scenario â” plunging oil prices are whacking almost the entire industrial sector. The theme is hardly new, as the pattern of our headlines has revealed over the past fifteen or so months:
Third-quarter earnings are confirming the worst-case scenario, i.e. â” not only are energy related end markets in a downturn, but conditions continue to worsen.
Our âœBatten Down The Hatchesâ call proved timely as the market sold off by about (10 percent) before staging a partial recovery
News from around the industry
In order to analyze the different gear oils suitable for the lubrication of wind turbine gearboxes, five fully formulated ISO VG 320 gear oils were selected. In between the selected gear oils, four PAO base oils can be found: PAOR, PAOM, PAOC and PAOX. A mineral-based oil (MINR) was also included as reference.
The complete Product News section from the October 2018 issue of Power Transmission Engineering.
Rheology models express the way tribological conditions translate to shear stress of the lubricant and friction force on the interacting surfaces. Due to the complexity of the lubricant rheology, the friction coefficient is usually obtained experimentally either under the same operating conditions or by curve fitting in a properly chosen friction map. The current study aims at determining the rheological parameters of a lubricant based on friction measurements carried out on a commercial, readily available ball-on-disc machine.
Sustainability is becoming one of the most important aspects within the power transmission business. Users demand low-maintenance drive systems with as little disruption as possible, and expect lifetimes of more than 10,000 hours. Approximately 40 percent of long-term gearbox leakages can be traced back to poor interaction between the radial shaft seal (RSS) and the lubricant. Thus, it becomes essential to analyze the tribological system as a whole, which includes the gear oil, seal grease (if required), elastomer material and design, and the shaft.
Slow speed operation of fan systems within the air handling industry is generally performed due to two reasons: a coast down operation is required for hot (induced draft) fans to cool down before shutdown (often by using a turning gear), and operational efficiency improvements can be achieved during non-peak periods by slow speed operation using a VFD. In either case, when these fans are supported by hydrodynamic bearings, it is the oil film thickness developed from the bearing-shaft interaction that limits the minimum speed that can be maintained without causing premature wear and bearing failure. This paper will present a brief overview of lubrication theory and critical design parameters to achieve slow speed operation.
Iâ™m building a custom gearbox with 7075 T-6 spur gears, and Iâ™m concerned that aluminum flakes will enter the races on the roller bearings (SKF 2307) and cause premature failure. So my question is â” should I place an oil seal on the shaft first to protect the bearing â” or is this an unfounded concern and I should mount the seal in the typical manner outside the bearing? Or both? Or go with a sealed bearing? Iâ™m confused and could use your expertise, please.
News from around the industry
With two armed conflicts underway impacting economic performance in Eastern Europe and the Middle East, we continue our investment stance of âœBuy on the Sound of Cannons â” Selectivelyâ â” but readers of Power Transmission Engineering should not be sanguine. Geopolitics is beginning to exert significant pressure on several end markets: I specifically refer to oil price. West Texas Intermediate or WTI has dropped from its $95-105 trading range in late spring to about $75 â” about a (25%) drop despite wo ongoing conflicts because of excess supply.
In an industrial application, equipment uptime is vital for on-time performance and profitability. The rotating members of industrial machines are subject to the highest degree of wear and are more susceptible to failure than non-moving parts. Bearing surfaces are the most critical and often the most expensive portion of the rotary assembly; it is imperative to protect these components. The primary protector of these components is the industrial seal.
Ball screw assemblies are key to this patent-pending oilfield corrosion prevention solution.
The complete Product News section from the April 2009 issue of Power Transmission Engineering magazine.
The complete product news section from the August 2008 issue of Power Transmission Engineering.
With today's smaller, hotter - and overloaded - machinery, specifying the correct lubricant is vital.
The complete Product News section from the October 2010 issue of Power Transmission Engineering.
The complete Product News section from the October 2012 issue of Power Transmission Engineering.
In 1991, Needelman and Zaretsky presented a set of empirically derived equations for bearing fatigue life (adjustment) factors (LFs) as a function of oil filter ratings.
End market conditions for the power transmission industry continue to worsen. With the Euro down 13% year to date and U.S. oil production surging we are seeing increasing headwinds, if not storm clouds, for the sector.
The air-oil, two-phase flow inside the multiple-point, oil-jet lubrication ball bearing was studied based on CFD (computational fluid dynamics) theory and technique, and compared with single-point, oil-jet lubrication. The results indicate that the air-oil distribution inside the bearing with multiple-point, oil-jet lubrication is more uniform than single-point injection.
Global economic activity remains good -- noise about China slowing, notwithstanding -- and despite the ObamaCare debacle, non-Christmas-related consumer spending looks pretty good. Europe is still Europe and China continues to grow 7-8 percent -- even as the government seeks to clamp down on its own shadow banking system. And India remains a mess.
The number one question today is: are the current low oil prices a near-term or structural development?