Chemical Resistance
The ability of a bearing to resist attack by a wide range of chemicals is a new consideration in bearing selection. Much time, care and cost, has been expended over many years in designing and fitting complex sealing mechanisms and housings to keep reagents away from bearings. In the vast majority of cases, this has been to protect the bearing, not the material, fluid or process.
The Sheedy Bearing introduces a new concept, the concept of not protecting the bearing from the environment.
Intrinsic chemical resistance leads to several new thoughts. Can sulphuric acid be used as a lubricant? Will the acids in animal fats affect the bearing? - or - can they act as lubricants? Can I run the bearing in salt or sugar water without protect? In all cases the answer is YES, if you use a Sheedy Bearing.
What then are the limits? What will the bearing withstand? What options are there in difficult areas? The answer is that we have yet to find an environment in industry where we cannot come forward with a solution. In rare cases it has taken some months of research, in conjunction with our client, to arrive at an acceptable result; however, we have always been able to arrive at a solution.
General Principles In Applying Sheedy Bearings
Rolling Bearing have been with us for years. They rust, need constant lubrication, can break and expel components and if run dry, are noisy. By comparison, the Sheedy Bearing is extremely quiet, rarely requires lubrication, it does not rust, all of the internal components are completely retained and it is fully resistant to cleaning with hot water, steam, caustic solutions, soap, many solvents, hot water, etc.
In essence, the Sheedy Bearing is a plain bearing. This is a type of bearing which has not been widely used in general industry for many years and may not be well understood by users. Engineering plastics are used extensively in the more common types of Sheedy Bearing and these materials are also poorly understood in many areas. And finally, poor selection of plastics in bearing applications in the past has resulted in some trepidation in using "plastic bearings".
The Sheedy Bearing has changed all of this. The unique materials developed for and used in , the Sheedy Bearings, coupled with the expert engineering advice and experience Sheedy offers, provide an exceptional world class product. Sheedy Bearings can solve many of the intractable bearing problems in industry, but you must understand the unique aspects of the bearing to take full advantage of the many benefits it provides.
