NTN ULTAGE Deep Groove Ball Bearings for Ultrahigh Temperature Environment
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Dec 21,2011
NTN Corporation (hereafter, NTN) has developed the “ULTAGE Deep Groove Ball Bearings for Ultrahigh Temperature Environment” for equipment used in ultra-high temperatures. The new bearing employs a solid lubricant designed with a special composition.
Fluorine grease is currently employed as the lubricant in rolling bearings used in high temperatures of 250°C or less, however sliding bearings are mainly used in place of roller bearings at ultra-high temperatures of 250 to 400°C, as these temperatures exceed the operating temperature of fluorine grease. There has also been an increased demand for the use of high-speed, low-torque rolling bearings used as bearings for stretching guide rollers of film stretching machines that operate within high-temperature furnaces, as a means of improving productivity and reducing power consumption.
The newly developed “ULTAGE Deep Groove Ball Bearings for Ultrahigh Temperature Environment” employs a solid lubricant designed with a special composition in place of fluorine grease. The bearing also features improvements made to the internal design to increase the amount of lubricant and optimize the shape of the bearings, resulting in approximately double the operating life, which is one of the longest in the industry. A positioning ring has been installed between the shield and solid lubricant to help feed lubricant in the direction of rotation to ensure the ideal contact conditions between the rolling element (balls) and lubricant, resulting in smoother rotation. In addition to providing a reliable supply of lubricant to the raceway surface of the bearing, the design reduces rotational torque to approximately 1/4. The inclusion of a metallic cover over the solid lubricant helps prevent the inner and outer rings from separating even if the solid lubricant becomes extremely worn.
NTN will be marketing the newly developed bearing as a product capable of being used in ultra-high temperature applications, and releasing it on markets worldwide.
[Features]
(1) Approximately double the operating life under ultra-high temperatures: one of the longest in the industry
(350°C tests, compared to NTN high-temperature grease specifications)
→ Employs a solid lubricant designed with a special composition, and improvements made to the internal design
(2) Approximately 1/4 rotational torque (compared to NTN high-temperature grease specifications)
→ Optimized shape of solid lubricant, installed a positioning ring
(3) Inseparable bearing structure
→ “U-shaped” metallic cover mounted over the solid lubricant
[Application]
Ultra-high temperature applications up to 400°C at atmospheric pressure
Example: film stretching machine : stretching guide roller (tentering clip)
Equipment within high-temperature furnaces : delivery roller
Glass manufacturing equipment : molding processes etc.
[Structure]
(NTN ULTAGE Deep Groove Ball Bearings for Ultrahigh Temperature Environment)
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
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