Self-aligning Ball Bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed.
The bearings are insensitive to angular misalignment of the shaft relative to the housing , which can be caused, for example, by shaft deflection.
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The growth of the machinery market is usually closely related to the overall economic benefits, but factors such as management regulations and currency fluctuations as well as new development trends and technology will also have a huge impact on the machinery industry.
IHS's mechanical product tracking system conducted a follow-up survey of products from 33 countries in Europe, the Americas, and the Asia Pacific region. From the regional perspective, the current form is very interesting.
The machinery industry in the three major regions developed rapidly in the two years of 2010 and 2011, but it suffered varying degrees of turmoil in 2012. Mechanical output in the Americas increased by 6.5 percent and performed well. An important reason is the U.S. government investment. In addition, the Americas are safer than Europe, which is in a long-term sovereign debt crisis and tightening policy. This favorable condition makes the Americas ideal. Investment place.
The growth rate in the Asia-Pacific region is only 1.8%, and development is slow. The main reason is that China's machinery industry has overcapacity this year, output is basically flat, and its speed of development has also slowed down significantly. At the same time, Japan’s output has been greatly affected by the appreciation of the yen. In 2011, the exchange rate of the yen against the US dollar hit a record of 76:1, which severely curbed the export of Japanese machinery products. More recently, the yen began to depreciate, and the exchange rate against the U.S. dollar exceeded 105:1, and the Japanese machinery industry benefited from it.
During this period, Europe is struggling in the ongoing economic crisis. Several countries have asked the European Central Bank to issue a policy of bailout. There was a short period of time before people expressed concern about whether Greece would withdraw from the euro zone. As exports to the European region are still slow and internal demand has become even worse, machinery production in the region fell by 5.7% in 2012 (although the European region looks somewhat better due to a slight increase in its production).
However, in 2013, the production of machinery in Europe and the Americas went in the opposite direction. Demand for mechanical products in Europe has risen. The growth rate of its machinery market has reached 2.8%, and the increase is very significant. In contrast, after years of strong development in the Americas, its speed began to slow, reaching only a 2% growth rate.
In the long run, the development of the industry is still relatively optimistic. The continuous improvement of economic conditions and other factors will contribute to the growth of machinery production. For example, in order to produce lighter packaging that is more aesthetically pleasing and less wasteful, the packaging industry's demand for flexible machines will grow; the catering industry and the pharmaceutical industry will have an increased demand for tracking management capabilities. The pursuit of rapid, efficient and low emissions and the above factors will all contribute to the advancement of the machinery industry. The improvement of remote machine diagnosis technology and the simplification and functional enhancement of the user interface are also driving the development of the machinery market.
Accommodate static and dynamic misalignment
The bearings are self-aligning like Spherical Roller Bearings or CARB bearings.
Excellent high-speed performance
Self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds.
Minimum maintenance
Due to low heat generation the bearing temperature is lower, leading to extended bearing life and maintenance intervals.
Low friction
Very loose conformity between balls and outer ring keeps friction and frictional heat at low levels.
Excellent light load performance
Self-aligning ball bearings have low minimum load requirements.
Low noise
Self-aligning ball bearings can reduce noise and vibrations levels, for example, in fans.
China's machinery production is expected to further improve in 2014
Looking into the future, mechanical production is expected to achieve further improvement in 2014, but there is still some fragility. This is because, especially in Europe and North America where growth is still limited, orders will increase, but it will show a gradual increase.