Experts predict that blockchain technology will expose the Internet to many new challenges and subvert past business models. William Mougayar, an investment advisor, believes the world is moving toward a fundamental economy in the blockchain because of the inherent security of blockchain technology and the lack of third-party involvement. Recently, at the European Security and Cloud Computing Conference 2017 in Munich, William Mougayar said that in the next few years, the economy of the blockchain will be larger than the economy of the Internet. According to Mougayar, money is an area where the web does not deal with "homeland", and most currency transactions are still via banks rather than P2P platforms. "Banks have convinced us that they still need them, but they actually just update their ledgers," he said, noting that blockchain technology does what it does, but does not require third-party involvement, like banks. The most famous application of blockchain technology is bitcoin, Mougayar said its "core" is the value of P2P transmission, and passwords are a key part of protecting stored data and securing and verifying transactions. He believes Bitcoin and other cryptocurrencies will become more and more popular as a means of transferring value, with as many as 900 different cryptocurrencies. Mougayar said that regional chains are based on the emerging emerging P2P infrastructure, unlike many web-based applications such as Facebook, that do not apply to the original decentralized concept of the Internet. He said the regional chain provides a clear and fast way to deal, without involving third parties. "This blockchain is a simple example of an API application interface that is used to verify something, which is a reconciliation, an identity, but because it is immutable, each transaction adds just the same thing as before, Trading history remains the same. This is a good record keeping technique, "he said. Digitally encrypted currency goes beyond the currency Mougayar said that encrypting money is more than just money. "They can represent a function, work and attention which means that new companies publishing user content can compensate users so they can get the token's attention or attention." "This means that users have access to cryptocurrencies that they can exchange for goods and services, which has been implemented by companies such as Steemit, and everyone is paid to create and plan content," he said. Mougayar said most of what's happening around the blockchain is about core developments, which is largely a "technical story." "Many of the activities are very technical, but we will now learn more about application development and will get more story-telling about applications, and that's where the web starts. First, we have to get the infrastructure and standards before we develop Application, "he said. Developers should be prepared for the inevitable blockchain changes Mougayar urges the organization to encourage their developers to learn the blockchain language in preparation for this inevitable change. "In fact, there are about 10 million Java developers in the world, but only 30,000 blockchain developers, and these will be the talent manufacturers need," he said. Mougayar said standards are very important in the technology age, and although there are only a handful of blockchain standards, the ERC20 standard for issuing tokens or cryptographic security is important because it is the primary reason that there are many ICOs and encrypted storage. He said: "When you put the standard on the market, it is the standard." However, Mougayar warned not to oversee the blockchain too early because of concerns about stifling innovation around the technology. "The blockchain is now just a baby, and we wait for it to grow as an adult and then regulate it," he said. Looking to the future, he said that the blockchain will overturn the database technology, a new type of virtual environment will emerge, there will be a new way to prove people's identity and value ownership, tokens and smart contracts will become new Language. Mougayar said: "We will enter the new blockchain economy 20 years ago by entering the online economy." The so-called aligning bearing is that the raceway raceway is spherical, and it can adapt to the angular displacement between the two raceways, which is mainly supported by radial load, and can also bear a small number of two-way axial loads.
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Characteristics of core bearing
It is mainly subjected to radial load, and it can also bear a small amount of bidirectional axial load.
The center ball bearing is the inner ring of the two raceways and the outer ring of the raceway for the spherical surface, and the ball bearing is assembled with a ball shaped roller. It can bear a large radial load and also bear a certain axial load, as shown in Figure 1. The outer raceway of this kind of bearing is spherical, so it has the performance of adjusting center.
The main features of the ball bearing are as follows:
(1) the outer race raceway of the ball aligning ball bearing is a part of the sphere. The center of curvature is on the bearing axis. Therefore, the bearing has the function of adjusting the center, and it can be automatically adjusted when the shaft and shell appear flexure, and does not increase the bearing burden.
(2) an appropriate amount of axial load that can bear radial load and two directions. But it can't bear the torque load.
This kind of bearing has smaller contact angle, almost no contact angle under axial load, small axial load capacity, large radial load capacity, and suitable for heavy load and impact load.
(3) the double row center ball bearing with tightened and locking nuts can be installed at any position on the optical axis and does not need to be positioned on the shoulder.
Spherical Roller Bearing is in the two groove of the inner ring and outer ring raceways between Spherical Bearing assembly, a drum shaped roller, as shown in figure 3. Spherical Roller Bearing with two rollers, mainly bear radial load, also can withstand any direction of the amount of axial load; radial load capacity is very high, especially suitable for radial heavy loads or vibration, but unable to bear pure axial load.
The main characteristics of the spherical roller bearing:
(1) bearing with self-aligning ball like outer ring spherical roller bearing raceway is a part of spherical surface, the curvature center on the bearing axis, the bearing outer ring raceway is spherical shape, so its self-aligning performance is good, can compensate concentricity error, thus can realize the automatic aligning.
(2) in the section perpendicular to the rolling direction, the roller busbar is a curve, which fits well with the inside and outside raceway. The roller and raceway are linear contacts, which can bear radial load and axial load, and has good impact resistance.
(3) roller and roller bearing raceway match well, and are therefore relatively serious curve generatrix, sliding, friction than cylindrical roller bearings, spherical roller bearings are allowed so low working speed.
(4) the heart fades with a normal roller bearing non symmetrical roller, it will generate an axial force, roller by the force and the center fixed flange contact, spherical roller bearing symmetrical roller, it can move along the axial direction using the middle movable baffle ring, so no longer block roller center the edge of the constraints, and saves the recess of the inner raceway, the roller can be used longer, so as to improve the bearing capacity.
(5) single row self-aligning roller bearing contact angle is 0. Under axial load, the contact angle did not change significantly, the axial load will be very small contact forces generated great between roller and raceway, so when the axial load is greater than the radial load, the loads of single row spherical roller bearing can bear radial and axial.
(6) bearing with self-aligning ball like set with tight double row spherical roller bearing can be installed in any position on the optical axis, do not need to process the positioning shaft shoulder.
Blockchain technology will subvert the traditional business model