NSK Develops a Long-Life Cage and Roller Assembly With Planetary Shaft for the Swing/Travel Reduction Gear of Construction Machinery
Resource from: Long-Life Cage and Roller Assembly With Planetary Shaft Likes:3041
May 10,2010
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Norio Otsuka) announced today it has developed a long-life cage and roller assembly with planetary shaft for the swing/travel reduction gear of construction machinery such as hydraulic shovels. This assembly offers twice the service life of conventional products. NSK expects annual sales of this product to reach 0.5 billion yen by 2012.
Development background
Planetary shafts and cage & roller assemblies for swing/travel reduction gear are used in severe lubrication conditions where abrasion powder from gears and other foreign material can become mixed with the lubricant. In addition, since the swing and travel of construction machinery typical occurs at low speeds, an oil film does not readily form on the planetary shaft and cage & roller assembly, creating further lubrication challenges.
In newly developing countries, the demand for new social infrastructure and resource development has increased rapidly in recent years. This has resulted in construction machinery being used under harsher conditions, being operated continuously for long periods of time, and being driven long distances over unpaved roads. Consequently, there is a growing need for planetary shafts and cage & roller assemblies for swing/travel reduction gear that offer a longer service life in harsh environments.
By developing the planetary shaft and cage & roller assembly as a set, NSK has created a product with the following superior characteristics—all of which meet the need for longer service life.
Product features
Improved orbital plane offers greater reliability
The orbital plane of the planetary shaft and rollers is given a smooth mirror finish, enabling the formation of an even and sufficient oil film, thereby improving reliability.
Special heat treatment brings improved surface fatigue strength
Using a special heat treatment on the planetary shaft and rollers increases the fatigue strength of their surfaces making them resistant to abrasion powder from the gears and other foreign material in the lubricating oil. This increases service life in an environment where foreign matter is present. Performance of the new product
With a service life more than twice that of conventional products, this product contributes to the following functional improvements in travel/swing reduction gears.
Increases durability and reliability under harsh conditions of use such as continuous operation for long periods of time. Furthermore reducing the frequency of maintenance improves work efficiency.
The long-life cage & roller assembly with planetary shaft is itself more compact and lightweight, helping to minimize the size of travel/swing reduction gears.
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Norio Otsuka) announced today it has developed a long-life cage and roller assembly with planetary shaft for the swing/travel reduction gear of construction machinery such as hydraulic shovels. This assembly offers twice the service life of conventional products. NSK expects annual sales of this product to reach 0.5 billion yen by 2012.
Development background
Planetary shafts and cage & roller assemblies for swing/travel reduction gear are used in severe lubrication conditions where abrasion powder from gears and other foreign material can become mixed with the lubricant. In addition, since the swing and travel of construction machinery typical occurs at low speeds, an oil film does not readily form on the planetary shaft and cage & roller assembly, creating further lubrication challenges.
In newly developing countries, the demand for new social infrastructure and resource development has increased rapidly in recent years. This has resulted in construction machinery being used under harsher conditions, being operated continuously for long periods of time, and being driven long distances over unpaved roads. Consequently, there is a growing need for planetary shafts and cage & roller assemblies for swing/travel reduction gear that offer a longer service life in harsh environments.
By developing the planetary shaft and cage & roller assembly as a set, NSK has created a product with the following superior characteristics—all of which meet the need for longer service life.
Product features
Improved orbital plane offers greater reliability
The orbital plane of the planetary shaft and rollers is given a smooth mirror finish, enabling the formation of an even and sufficient oil film, thereby improving reliability.
Special heat treatment brings improved surface fatigue strength
Using a special heat treatment on the planetary shaft and rollers increases the fatigue strength of their surfaces making them resistant to abrasion powder from the gears and other foreign material in the lubricating oil. This increases service life in an environment where foreign matter is present. Performance of the new product
With a service life more than twice that of conventional products, this product contributes to the following functional improvements in travel/swing reduction gears.
Increases durability and reliability under harsh conditions of use such as continuous operation for long periods of time. Furthermore reducing the frequency of maintenance improves work efficiency.
The long-life cage & roller assembly with planetary shaft is itself more compact and lightweight, helping to minimize the size of travel/swing reduction gears.
(Long-Life Cage and Roller Assembly With Planetary Shaft)
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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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