Zerofriction bearings

Our responsive products and technologies enhance automotive performance and industrial productivity while reducing energy consumption to unprecedented low levels. In the early 1960s, we set our sights outside Japan and have established over 200 business locations in 31 countries alongside a vast network of joint ventures and partnerships in all corners of the world.

Frictionlessbearingsmagnetic

2) This new specification can be produced using existing facilities, and NSK plans to offer it to customers without delay in order to introduce it to the market as soon as possible.

NSK began its journey manufacturing the first bearings in Japan in 1916, and has since developed into a global organization researching, designing, and manufacturing Motion & Control™ solutions essential for mobility and industrial applications. NSK is the top supplier of bearings in Japan and is the third largest supplier in the world by market share.

Exponent is defined as the power given to a number, the number of times it is multiplied by itself. If an expression is written as cxy where c is a constant, c will be the coefficient, x is the base and y is the exponent. If a number say p, is multiplied n times, n will be the exponent of p. It will be written as

Highfriction bearings

1) Optimization of the number of rollers reduces rolling friction, achieving an average 20% reduction in friction over the entire rotation speed range

1 WLTC: Worldwide harmonized Light vehicles Test Cycles, an international method for measuring fuel economy, which began to be adopted in Japan by the Ministry of Land, Infrastructure, Transport and Tourism in 2017. Under the previous method of determining fuel economy values (JC08 cycle), the average fuel consumption was measured as an average over the entire range of low to high vehicle speeds. However, under the WLTC cycle, it is measured at each vehicle speed: in the city, in the suburbs, and on highways.

Magneticbearings

Ultralow friction bearings

3) NSK is also applying the new optimization technique for the number of rollers to existing models of low-friction tapered roller bearings.

NSK has years of expertise related to special crowning technology and cages for lean lubrication conditions to solve problems, such as excessive surface pressure and seizure at the ends of the rollers, and has leveraged  this expertise to optimize the number of rollers.

There are certain basic rules defined for exponents in order to solve the exponential expressions along with the other mathematical operations, for example, if there are the product of two exponents, it can be simplified to make the calculation easier and is known as product rule, let’s look at some of the basic rules of exponents,

Frictionless bearing types

Low frictionceramicbearings

A factor of a number divides that number completely without leaving any remainder. For instance, take a number 30, now 30 have plenty of factors and they are the numbers that leave no remainder. Factors are 2, 3, 5, 6, 10, 15, 30. Another example can be the number 10, factors of 10 are 2, 5, 10. 1 and the number itself are always the factors of the number. Let’s look at the problem statement now,

Tapered roller bearings are frequently used when there are low-rotation speed, high-load conditions on the tire side. Therefore, reducing the amount of friction in the roller bearings can help to increase the efficiency of the power train unit.

NSK Ltd. has developed its 7th generation of low-friction tapered roller bearings. This product can help to increase vehicle range through improved fuel/electricity consumption achieved by reducing friction by an average 20% over the entire rotation speed range. NSK aims to achieve annual sales of 15.0 billion yen by 2030 for this product, including existing models.

Since around 1980, NSK has used various methods to decrease friction in tapered roller bearings. In recent years, the rapid advance of automobile electrification in pursuit of a decarbonized society has increased the need to reduce friction. Moreover, Japan's adoption in 2017 of the WLTC1 (a standard international method for measuring fuel economy), has made it necessary to further improve fuel economy. Therefore, tapered roller bearings also need to deliver low friction across the entire rotation speed range.

Mathematics is not only about numbers but it is about dealing with different calculations involving numbers and variables. This is what basically is known as Algebra. Algebra is defined as the representation of calculations involving mathematical expressions that consist of numbers, operators, and variables. Numbers can be from 0 to 9, operators are the mathematical operators like +, -, ×, ÷, exponents, etc, variables like x, y, z, etc.

Tapered roller bearings have been found to be very durable against contamination, and to have a superior service life. Performing new tests, NSK confirmed their actual service life to be even longer than the calculated service life.

Exponents and powers are the basic operators used in mathematical calculations, exponents are used to simplify the complex calculations involving multiple self multiplications, self multiplications are basically numbers multiplied by themselves. For example, 7 × 7 × 7 × 7 × 7, can be simply written as 75. Here, 7 is the base value and 5 is the exponent and the value is 16807. 11 × 11 × 11, can be written as 113, here, 11 is the base value and 3 is the exponent or power of 11. The value of 113 is 1331.