This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

NSK develops energy-saving bearings for high-efficiency motors

20 January 2012

NSK has developed energy-saving bearings for high-efficiency motors that halve the friction loss of rolling bearings used in conventional products. The new bearings contribute to a reduction of electric power consumption by these high-efficiency motors. Reduced bearing friction loss means bearings operate at lower temperatures, which increases the reliability of motors and other devices to which they are fitted.

Reducing CO2 emissions and saving energy have become increasingly important in
recent years as global warming countermeasures. Motors account for 75% of industrial power consumption and soefficiency regulations for motors are in place around the world. In 2008, the International Electrotechnical Commission (IEC) created global standards for motor efficiency.

Nearly 90% of motor efficiency issues are caused by iron loss, copper loss, circuit loss, and windage loss, whereas mechanical loss related to bearing friction accounts for only about 10%. In the coming years, as the efficiency level for motors progresses to IE3* and IE4*, the demand for bearings with low friction loss will increase.

These products conform not only to JIS motor efficiency standards, but also to the extremely demanding IE3 and IE4 efficiency standards of the IEC.

*IE3, IE4: Efficiency levels set by the IEC. IE1 (standard efficiency), IE2 (high efficiency), IE3 (premium efficiency), IE4 (super premium efficiency).


Contact Details and Archive...

Print this page | E-mail this page