The purpose of coordination is to make the inner ring or outer ring of the bearing firmly fixed with the shaft or shell, so as to avoid unfavorable axial sliding on the matching surface.
This unfavorable axial slide (called creep) will cause abnormal fever, composite Surface Wear (and then make the worn iron powder intrude into the bearing) and vibration problems, so that the bearing cannot play a full role.
Therefore, for bearings, due to bearing loa
vibration at three places. The repetition frequency is exactly consistent with the passing frequency of the roller through the inner ring, therefore, it can be regarded as a single fault in the inner ring. When the roller passes through the fault point, it will arouse the structural resonance of the bearing system. As the roller passes through the fault point, this resonance will quickly decay. Generally, experienced engineers can take a look at the sound waveform to determine whether the beari
Ball bearings
Time Limit: 5000/1000 MS (Java/others) memory limit: 65536/32768 K (Java/Others)Total submission (s): 40 accepted submission (s): 20 Problem descriptionthe Swedish company SKF makes ball bearings. as explained by Britannica online, a ball bearing is "one of the two types of rolling, or Anti friction, bearings (the other is the roller bearing ).
Acer unveiled a range of products including the flagship concept chief Electric product Predator 21X, the mainstream gaming notebook, the Shadow Knight 3 Series, and the ultra lightweight Hummingbird family Acer Swift 7 and Spin 7.
Today is the start of this Acer Swift 7, please see detailed details:
I bought a more affordable laptop in the previous phase Acer (ACER) Aspire e1-472g, with the Linux operating system, due to work needs to replace the operating system ubuntu12.04, but has been plagued by no wireless network card driver. This problem has finally been solved today, the method is as follows:1. Check the wireless adapter model:~$ LSPCI-VNN | grep WirelessMy wireless network card is:02:00.0 netw
Wireless NIC Driver Installed in acer (acer) Aspire E1-472G ubuntu-12.04, ubuntu12.04
I bought a relatively affordable notebook acer (acer) Aspire E1-472G, built-in linux operating system, because of work needs to replace the operating system with ubuntu12.04, however, it has been suffering from no wireless NIC Driver.
Acer's 13-inch Swift 7 is the lightest, thinnest and most portable ultra-extreme in the market, coupled with a fan-less design, so it doesn't have much noise to run. At the same time, the Swift 7 design is also very stylish, and keyboard feel is also I experienced in all the superb level of the super, and the large touch pad is also very comfortable to use.
But that does not mean Swift 7 is perfect, and of course there are drawbacks.
First, Swift 7 is priced at $1050 (about 7090 yuan), althou
With the advent of Intel's hyper-polar concept, the entire notebook market began to change significantly as Microsoft Windows 8 came to market late last year. In this case, the manufacturers fully exert their own design advantages, launched a new type of unique ultra-polar products. such as Microsoft's own surface Pro, Lenovo four modes of use yoga, ASUS dual-screen design of the Taichi, are more eye-catching new products. The Acer Aspire P3, which we
Acer Aspire R7 Evaluation
After the listing of Microsoft Windows 8 System, we have seen more and more mixed design notebook products in the market, including many flat/notebook two products, with unique screen design deformation, making the traditional PC market more dynamic. Recently, the well-known PC manufacturer Acer also joined the field, the introduction of a dual-axis screen Aspire R7 deformation, c
This is not the first time that Acer has published a "replaying ". When Microsoft entered the hardware release of its Surface tablet, Acer criticized Microsoft for competing with its partners. Acer compared hardware to food, And said Microsoft would not swallow it. Wang zhentang once bluntly stated that Microsoft's entry into the hardware field is destroying the
Can the Acer laptop install the win8.1 system? Small series deliberately checked Acer Acer (ACER) E3-111-C5N3 notebook information, with you analyze This can install win8.1 system, the specific content as follows we first look at Acer (A
Traditional laptops are undergoing some changes, such as the Chromebook of the Internet. This unconventional notebook, between the tablet and the computer, runs browser-based Chrome OS, and is actually like a full-featured browser with storage and webcam components.
Although Chromebook has some limitations, it has advantages: fast, easy to operate and low in price. In addition to the Chromebook pixel is more expensive, the other Chromebook is not more than 300 U.S. dollars (about 18
Article title: Acer is pushing Linux and Microsoft farther away. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems and open source, and some other basic categories as the Acer of the world's second largest notebook seller, the purpose of doing so is not to know that the market. For UMPC, the above features are ind
While high-end hyper-geeks tend to have attractive designs, lower-priced notebooks below 4000 yuan are more popular than ever, thanks to higher prices and the popularity of mobile platform devices. At present, some low-end notebooks have hardware upgrades, the main improvement is the use of the Intel fourth Daicouri i5 processor, such as the Delling 14 series, HP CQ14 series, and today's Acer Aspire e1-472g.
On the configuration,
Acer unveiled a variety of products including tablet computers, AIO machines, notebooks and wearable equipment at a new conference April 29 in New York City. Among them, Aspire Switch 10 is a hybrid design of the Windows 8.1 flat, with a 10.1-inch screen, and the keyboard can be used as a notebook computer, the following to look at the machine's hands-on experience.
Fuselage design: Magnetic card mouth Type connection
The Acer 4930g741g32mn notebook, which was bought earlier, uses an XP system and cannot connect to the projector. Some people say they need to install a driver.
I searched the internet and said it was about to install Acer epresentation management,
Therefore, an Acer epresentation management is downloaded. The system prompts you to install
PC makers rarely get stuck in the rut, or how to compete with a lot of new equipment that emerges every week, especially as Intel launches new processors and a number of new machines are constantly on the market.
Acer Aspire V7 notebook computer with the entire next generation of Intel Haswell platform processor, compared with the previous generations of the entire fuselage slimming nearly 9%, and the selection of aluminum alloy drawing p
Tencent Digital Message (compiled: Chenzai) After years of painstaking, Chromebook finally ushered in the rise (at least in the school), which means that mainstream PC manufacturers and chip manufacturers also intend to participate in it, such as Nvidia. Although the company has previously shied away from Chrome OS devices, they have now provided their own Tegra K1 chips for a variety of Chromebook, and are committed to delivering strong endurance and graphic performance.
First, you need to do some work before reinstalling the system, mainly back up the hard disk MBR information, enter C:/program files/Acer/Erecovery directory. Run mbrwrwin backup rtmbr. bin at the command prompt to back up the hard disk MBR information to the rtmbr. binfile and back up the file. This file will be used later!
At the same time, through erecovery
1. Burn the system recovery DiscThe system recovery disc can restore the computer to a facto
Acer Acer relies on a thick brand culture, choose the resurrection of the millennium's ingenuity, the effort to create a landmark Acer Hummingbird s5-371, to refresh the human aesthetic standards of "bright thin", "elegant", "smart", and continue to conquer people's senses and hearts, for the fashion of the United States to make a new definition. Today, let's sta
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