Solid Oil lubrication protects bearings
An innovation in lubrication, developed and manufactured by SKF, the leading knowledge engineering company, has been introduced to protect bearings that are used in particularly demanding applications, in areas where they cannot easily be relubricated, or where high levels of contamination can otherwise affect their operation. Called Solid Oil, the technology is contained within the normal bearing envelope and has no negative impact on performance or functionality, yet depending on the application it can significantly prolong operating life.
Solid Oil bearings are essentially sealed for life, using a conventional cage and rolling element arrangement that incorporates a specially developed oil-impregnated polymer material, which completely fills the internal voids within each bearing, leaving a narrow gap between rolling elements and raceways. The micro-porous structure of the polymer material holds up to four times more oil than a conventional grease-filled bearing, and allows oil to be released gradually around the moving internal surfaces, ensuring uniform and consistent lubrication for the operating life of each bearing.
-------------------------------------------------------------------------------------------------------------------------------------------------
Essential Analysis on the Bearings Market in the UK out Now
The Plimsoll Portfolio Analysis - Bearings is a comprehensive evaluation of the UK market. The revised and updated 2008 edition analyses the financial performance of the companies important to the success of your business. Using the most up to date information available, the analysis is ideal both as a tool to benchmark your own company's results and to study the market in more depth. Key Topics Covered: The report is divided into two colour-coded sections for your ease of use, Sector Analysis and Individual Company Analysis. Sector Analysis: Sales growth, market share and profitability are all analysed over a 10 year period giving you the fullest picture possible of the health of the market.
Industry Analysis: Each company receives a full page of analysis, evaluating their financial performance over the last five years so you get a full picture of the long term prospects of each company. Each company page of analysis is also packed with the following information: Full business name and address, Names and ages of directors, contact details and website address, seven unique Plimsoll charts showing at a glance the performance of each company, averages for the industry are also shown indicating the bare minimum each company should be looking to achieve, and five years of the latest
accounts available, New! Written summary on each company highlighting their key strengths and weaknesses.
-------------------------------------------------------------------------------------------------------------------------------------------------
Thermal Assessment of Dynamic Rotor/Auxiliary Bearing Contact Events
Under normal operation, a rotor levitated by magnetic bearings will rotate without making contact with any stator component. However, there are a number of circumstances that may lead to temporary or permanent loss of levitation. These include full rotor drop events arising from power loss, momentary fault conditions, sudden changes in unbalance, high levels of base acceleration, and other aerodynamically induced force inputs. The spinning rotor will come into dynamic contact with an auxiliary bearing. Highly localized and transient temperatures will arise from frictional heating over the dynamically varying contact area. Rotor dynamic contact forces are predicted for a range of initial conditions leading to combinations of bounce and rub motion on the auxiliary bearing. The transient heat flux from the contact area is then ascertained. A transient thermal Green's function is developed in a form that is effective over short or long time scales and local to the source. This enables the transient thermal response of an auxiliary bearing to be assessed for a range of dynamic contact conditions. Auxiliary bearings consisting of fixed bushings and free to rotate inner races are analyzed. The results show that significant localized contact temperatures may arise from each contact event, which would accumulate for multiple contact cases. The methodology will be of relevance for the life prediction of auxiliary bearing designs.
-------------------------------------------------------------------------------------------------------------------------------------------------
High Growth Forecasted for the World Bearings Market
Global demand to rise 6.4% annually through 2012. Global demand for ball, roller and plain bearings is forecast to climb 6.4 percent annually through 2012 to $66.2 billion. Aftermarket sales gains will be limited by increases in average bearing life, reflecting the use of improved product designs, better-quality materials and better lubricants. However, growing demand for more expensive, better performing bearings will provide a counterbalance, supported in part by high energy prices, which are making highly efficient bearings a more attractive investment.
Gains to occur in both developing, developed areas. Product demand in developing parts of Asia/Pacific, Eastern Europe, Africa/ Mideast and Latin America will outpace sales in the US, Western Europe and Japan through 2012. Market advances in developing areas will be fueled by healthy economic growth, ongoing industrialization efforts and rising personal income levels, bolstering manufacturing output and fixed investment expenditures. Bearing demand in the US, Western Europe and Japan will rise as well. Advances will be spurred by largely favorable economic climates and higher per capita income, resulting in increased manufacturing activity and consumer spending for durable goods.
-------------------------------------------------------------------------------------------------------------------------------------------------
Drop-in replacement bearings
The latest range of plain bush bearings from Euro-Bearings have been designed as direct drop-in replacements for recirculating ball bushings as made by major manufacturers. These products offer designers a competitive and more versatile option for OEM installations, with high performance retro-fit replacement bearings for plant, maintenance and service engineers operating in a very wide range of industrial spheres Three types of bearings can be supplied including a stainless steel outer shell incorporating a ceramic core which is self lubricating. Aluminium assembly offers reduced weight
They are designed for use within a temperature range of -400 to +375F operating on minimum mild steel shaft hardness of RB25. For the ceramic coated bearings, the hardness should be RB35 and the temperature range covered is -200 to +400F. Materials used for construction also provide high resistance to attack from commonly used industrial chemicals when used at non elevated temperatures.