How to pick a really good sound points to buy a car stereo

Posted on January 26, 2012 by admin

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Buying a car stereo or other car electronics products, the majority of consumers probably the first consideration is the budget, but should note that prices and product features, characteristics is absolutely a positive correlation, but also to take into account the time first want to know, what their needs are, this is more meaningful selection.

Consumers pay attention, you will find features similar sound, the car is often used expensive than home, because all the equipment used in the car is basically:

To be able to heat (car parked in the sun, the temperature inside the vehicle up to 85 degrees).

Resistant to vibration, and thus the requirements of the specifications are more stringent.

At the same time the most important is the use of road-vehicle devices to be able to minimize the interference, must not overwhelming, in order to operate the equipment and affect traffic safety.

car audio since it is a sound, sound optional elements are generally similar, is to look at personal sound quality, sound requirements. Here particular mention is due to in-car use arising from the points of difference.

Security considerations

The first is the previously mentioned security concerns, to consider whether the operation of goods on hand in place, whether it is easy to learn, easy to remember, there is no specially designed for traffic safety. For example, some car audio console called a safety bar can be controlled with a lever, the design principle is sound control of major functions in one control rod, through the touch will be able to conduct various operations, such as wipers in the control , lights, etc., do not have to distraction with the eyes.

Interference considerations

Secondly, car and home listening environment so very different, in addition to the aforementioned high temperature, vibration, the noise will have all sides, these low-frequency noise can interfere with music in general is to install the amplifier to overcome this the problem. Confidential basis to expand the size of the entire sound system (the number of speakers, speaker size and frequency response, etc.) to consider the number of channels and output power. Output more than the maximum output power amplifier, the amplifier may cause burn. It seems that if the output power the better it? In fact, the one inside the car than at home so much space, do not have blind faith in high-power output, as long as enough on it. Second, the higher output power, the price will rise.

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Interpretation of how to use high-pressure LED to improve the efficiency of LED bulbs

Posted on January 26, 2012 by admin

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Use LED as light bulbs to replace the threaded screw-in incandescent bulbs has many advantages. In general, we will trumpet (5-9) of the LED in series, using a power supply to line voltage into low voltage (typically a few tens of volts), when the current is about 350 to 700mA. In determining how best to allow users with the line voltage isolation, we need careful consideration, on balance. We can achieve power in isolation, can also be installed in the LED process in such isolation. In some low-power design, LED physical isolation is a common approach, because it allows the use of lower cost non-isolated power supply.

Figure 1 shows a typical LED light alternative. The example of the power supply non-isolated power supply, the means to achieve user isolation voltage protection is embedded in the package rather than the power supply. Obviously, the power of the space is extremely small, and thus pose a challenge to the package. In addition, the power to be buried inside the package, thus preventing the heat, affecting the efficiency.
Figure 2 shows a 120-volt AC power through the LED-powered, non-isolated circuit. It contains a power for the buck power stage rectifier bridge. The buck regulator is an "upside-down version", the power switch Q2 in the circuit, while the circulation diode D3 is connected to power. The power switch conduction period, through a source resistance of the current regulation. Despite this very high efficiency (80% -90%), but there are several limitations of this circuit efficiency shortcomings. Turn the power switch must carry the full output current, while the power switch is off, the output current flows through the circulation diode. In addition, the current sense resistor R8 and R10 of the voltage of about 1 volt. 15 to 30 volts compared to the LED voltage drop across all three are great, and power efficiency will be a constraint. More importantly, these losses will promote bulb temperature. Ability of the LED light will gradually decrease, and this ability with the LED operating temperature are closely related. For example, 70oC conditions, LED light output by 30% of the time exceeded 50,000 hours, and in 80oC conditions, this time only 30,000 hours. As the bulbs are installed in some of the "tube" in which "tube" tend to impede the heat is not conducive to convection cooling, the heat problem is further complicated.
LED manufacturer LED series by the number of teams in a common substrate, to create a higher voltage of the light. The high pressure also brought light or have a lower cost or higher power supply efficiency. Using these high-pressure products, we only need to use a rectifier and a ballast resistor, in order to achieve more cost-effective power method. Although this power can produce very good power factor, but is inefficient because a large part of the input voltage are used in a steady flow resistor, resulting in 30% -50% of the LED power loss. However, it can be used for small volume, low-power applications. However, in some high-power applications, the low efficiency allowed to no avail. Figure 3 shows another alternative: the use of a boost power supply. Most of the circuit the same way as above. However, the switch, diode, and current detection loss is much smaller, bring up to 90% to 95% efficiency. In addition, the circuit also has a good power factor of 97%.
Figure 4 is described in Figure 1-2 Schematic diagram of the power of pictures. Even if the power output generated roughly the same, but there are some significant differences in size affect the power supply. Power boost inductor size was smaller, because of its lower storage requirements. Compared to the step-up power supply, power supply with a larger step-down resistor. The simulation of the load resistor as a resistor (Figure 2 R20), used to determine when to turn dimmer silicon controlled rectifier (SCR). Need to do this because of the dimmer switch in the Triac next to a component of electromagnetic interference (EMI) suppression capacitor, in the case of no-load power supply voltage is relatively higher. This will disrupt the power supply, leading to instability dimming. Shique not necessary to use the power boost, because the LED through the boost inductor connected to the input, to provide sufficient load, so the problem will not be a problem. Not shown in the back of the board, but as shown in the diagram, there are more low step-down power supply circuit. Therefore, the step-up power with lower power consumption, this LED bulb replacement, such as limited space applications is extremely important.
In short, because of its low power consumption, high-voltage LED, a small temperature rise characteristics, can help increase the spin-LED lamp life. It is through the use of alternative buck-boost power supply, thereby enhancing the power efficiency to achieve. Boost the power loss is about half the buck regulator. In addition, fewer components boost power, power factor better, smaller, and the use of a triac dimmer switch assembly is easier to achieve.

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out of incandescent LED can illuminate future?

Posted on January 26, 2012 by admin

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In early November, the National Development and Reform Commission issued the "China to phase out incandescent road map" to the market known as the LED lighting revolution into a cardiac stimulant. Sharp decline in the face of the backlight market, the industrial development of chaos, LED general lighting industry can become the "savior"?

Grim reality of a better future

In this year s ELEXCON on, LED is undoubtedly one of the hotspots. "High-end LED lighting market less affected by the economic downturn, high-end market segment in the pursuit of quality lighting giant more, so they will invest in the use of high-end materials products, and those low-end packaging market in the enterprise, by more pronounced economic downturn affecting the future, the company s strategic focus is one of the LED market. "Yi Technologies AG, a large vice president Chen Zhengming in the exhibition" China Electronics News "reporter, showing confidence in the market for LED lighting . The world s second largest manufacturer of SMD thick film chip resistors, LED mass production this year by the official blew the ceramic package substrate to enter the LED market, the high-end horn. China Electronics (CEC) Solomon Systech s director of business operations areas Wei Jiang also held the same view, he believes the current LED lighting business closures just downstream market shuffling process, that are not core competencies of the low-end manufacturing business will certainly be eliminated, and in the high-power LED lighting driver IC hard Systech is optimistic about the company s future growth.

"LED is facing great potential prospects, but there have been some impact on the healthy development of the difficult issues." By the China Electronic Information Industry Net, China Electronic Appliance Corporation co-sponsored the 2011 China (Shanghai) LED industry healthy development of the Forum, Xiamen Hualian Electronics Co., Ltd. Fan Yu bowl laments.

LED luminous efficiency of 150lm / w (lm / W), LED lamp luminous efficiency 120lm / w, accounting for 30% of the lighting market, the annual saving 100 billion kwh, reduce carbon emissions 98.99 million tons; in 2020 accounted for 50% of the lighting LED lamps market, the annual saving 340 billion kwh, equivalent to four Three Gorges Hydropower Station. However, the reality is not so ideal. Fan Yu bowl, said that China s industrial power LED light effect in the 100 ~ 110lm / w level, LED lamps lighting effect in the whole 80 ~ 85lm / w between; LED lighting and traditional lighting price gap is also larger, the cost of a LED lighting to promote the stumbling block; In addition, the first half of 2011 China s LED bulbs output more than 60 million, more than 76% of global production in China of LED bulbs, LED bulbs export-oriented, the proportion of exports accounted for more than 82%, 60 million in Only 6 million in domestic use, from 30% of the lighting market share, there are many way to go.

It is worth emphasizing that, despite experiencing a high brightness LED s start with the start-up stage to the "Eleventh Five" China s LED industry has begun to take shape, and entered a period of rapid development, but in the lucrative industry chain areas, China is still in short board. Leaving aside the lack of critical equipment at home, even if a foreign company to purchase key equipment, but in the upstream production techniques still have a long way to go. "Judging from the current level of technology and the overall industry trends, our country is still in the epitaxial chip technology early stage of development, the product is still middle and low, so the material improvement, photoelectric conversion efficiency, cost control and production and technological progress will continue in the future faced with opportunities and challenges. "China Electric Division No. 13, said Professor Zhang Wansheng.

Overcapacity issue

LED industry this year on over-investment, excess capacity, endless debate, and is known as the city of Shenzhen, China LED of an LED manufacturers appear more closures of excess capacity is further enlarged the debate. However, the reporter saw that, while an expert to talk about over-investment, excess capacity, while the company heavily smack to the LED industry, especially the upstream industry, the industry has become restless.
Since last year, backlighting and general lighting for the rapid development of projections were too optimistic, resulting in excessive investment in the upstream LED. Sapphire substrate most serious over-investment: manufacturers (including those under construction) of 41, a total of 44.7 billion yuan investment, production capacity of approximately 330 million / year, far greater than the actual demand; LED epitaxial silicon over-investment, followed by Currently there are 85 factories, 96 factories under construction, with a total investment of 183.5 billion yuan. MOCVD for the 4519 Master Plan sets the current practice with 543 units, January to July 2011 increased more than 200, 2012 China s LED chip production capacity of 10 times in 2010. Sapphire substrate from the beginning of $ 35 / piece to the current $ 13 – $ 15 / piece, an average reduction 50%; LED chip average price reduction of 25%, the maximum decrease of 42%.

However, falling prices and business investment is not pouring cold enthusiasm, this year described as "sapphire of the Year" in October of this year alone, sapphire substrates have two production industry and the investment astonishing: October 28, the energy giant GCL Sapphire project was formally put into operation, a $ 300 million. October 26, Elton optical one hundred kg level LED sapphire crystal project has officially started production, the goal is to produce 30 million LED sapphire substrate. The swimming season, general manager, said the total investment of 2.2 billion. In addition, LED industry, the other three optical giant will invest 25 billion yuan in Fujian Quanzhou (Lake head) optical sapphire substrate Industrial Park to build a factory, and strive to 2 years to complete. Amethyst 29-billion in proposed optical Xinjiang Production and sapphire crystals.

Excess capacity for investment risk, says that corporate executives do in fact have "a pretty good idea." Elton optical shareholders Guiyang Industrial Investment Group Chairman Xu Hao in the "China Electronics News" reporter, says that although the European debt crisis and rising domestic prices, higher labor costs, RMB appreciation to the many industries had a negative impact, but the next 2 to 3 years or LED lighting will be rapid development, especially high-end lighting market, companies are now on stream just for the next 2 to 3 years to prepare to seize market opportunities rising demand . In addition, providers GTAT Sapphire Dan Changjing furnace Sapphire vice president, general manager of business equipment and raw materials CherylDiuguid that the decline in prices can only show a small size substrate chip oversupply, large size of the substrate film is still highly profitable, prices are also higher. For example, the current four inches sapphire films offer about $ 50. And domestic investment in these sapphires were the main goal is focused on four-inch and above large-size substrate.

Rational development of the flow

Maturity of technology, decided to expand the market situation, regardless of whether the investment is the excess heat capacity, the industry should be a rational treatment of the development of LED industry, companies must also follow market opportunities and actively push forward step by step. Fan Yu said bowl for the short and long term planning, business investment must not blindly follow the trend, not a single pursuit of land and other benefits, go astray, causing investment risks, seize the moment and lay the foundation for the future, prevent risks before steadily line, is the better choice.

In addition, government policy, industry experts have said that the country should invest in health of the macro-guidance, the national research organizations, industry-specific evaluation, the actual work done fine form at the national level response and landing; guide get rid of the existing "designated Xinjiang autonomy", does not consider global investment patterns tend to be the whole country, focus and guide the development.
Government should have the courage to face those that have occurred can not circumvent the problem, after a round of investment, it should be a rational analysis and evaluation of the investigation, focused. For in fact do not have the technology, human resources are not available, management does not have, and only land plants, only the money of the company, to research, based on the guide adjustment, integration gives way to avoid waste of resources. For low-level redundant construction, should also be based on the research, strengthen macro guidance of state government and industry, or merger, or dismount, or determined to improve their level of access to high quality state of development. For resources companies should focus on fostering the development, the formation of the national backbone, the backbone of the industry, support forward, really have to build China s own international competitiveness "carrier group" to seize the opportunity to meet the challenge.

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2011 environmental goods ranking in Japan – LED bulbs much attention

Posted on January 26, 2012 by admin

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With energy-saving trend higher, probably the most talked about products to the number of LED (light emitting diode) bulbs. In the survey, the "earthquake more attention in the selection of merchandise areas," the inquiry, the answer is the largest number of "fluorescent lamp" of 38.1%. In the three years to purchase 77.5% of consumers said "concerned about environmental protection."

Toshiba company is ranked first prize. Number of people buying the same top. However, evaluation of environmental performance of the individual, the situation is slightly different. 10 projects, 9 projects Panasonic ranked first in the next want to buy companies, ranking higher than the Toshiba, Panasonic.

    Although the survey alone is difficult to draw conclusions, but according to common sense reasoning, Toshiba s evaluation of environmental goods to be the reason why, is not that the environmental performance, but from its use of LED light bulbs contribute to environmental attitude, For example, in 2009 launched the first practical large-scale enterprises in the level of the LED light bulbs, incandescent bulbs in 2010 first cut-off and so on.

   LED will completely replace incandescent

 LED bulbs come in only two and a half years, prices fell sharply, has entered the popular stage. However, Toshiba Lighting Technology Light Division, Ministry of goods act goods LED head Yuji Takenaka said: "The brightness of the newly unified method token lumens, the company s specifications have been able to compare with each other, but the market is not mature."

   Company s sales approach has undergone tremendous change. Initial emphasis on energy saving, long life are well known. This summer, many consumers who buy energy-saving LED light bulbs is one of evidence.

 Today, the company is working to expand the product line. To compensate directive, on the back of the LED bulbs are more dim shortcomings to light with a wider range of high light-based products are gradually come out.

  Panasonic has put in a special small tilt chandelier installed krypton bulbs, Toshiba will launch in November bulb color, and brightness and 60W incandescent bulb with 810 lumens of LED light bulbs. Replace incandescent bulbs in order to obtain the demand, companies are racing to develop.

   Panasonic Appliance Wellness Division marketing manager of the original goods Zhaoyi Lang said: "I hope to lift (line) missing teeth of the state."

  In the future, the eye of the typhoon is expected to become the market probably will 爱丽思欧雅玛 and other low-priced goods. The company s environmental performance evaluation, though not outstanding, but the number of people buying highest in the first three, the next time also want to buy the company discharged the first four. This probably shows that consumers are dissatisfied with the price of LED bulbs is still big.

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Replace 60-watt incandescent bulb the LED marked decline in prices

Posted on January 26, 2012 by admin

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60-watt LED bulb prices fell 1 percent in October

DRAMeXchange (TrendForce) s research department LEDinside data, in October 2011 price survey found the lamp, replace the traditional 60-watt (W) incandescent bulbs LED bulbs marked decline in the price, 9% monthly decline, especially in the U.S., the decline was more than 10%, the average retail price came to $ 38.6, the lowest price is $ 24.97. In replacing the traditional 40-watt LED bulb part, the average price appears stable.

 
LEDinside said that in October the price of LED bulbs, U.S. prices fell significantly. In addition to replacing the traditional 40-watt LED bulb price fell 3 percent, instead of 60 watts in part of the decline was more than 10%. Replace the current 60-watt minimum price of goods is $ 24.97, while the average retail price also came to $ 31.3, compared to other regions, its unit price is relatively close to the people. The obvious reason for the falling market prices may be subject to manufacturers such as Philips brand promotion strategy impact, stimulating effect of parity, making the market price and thus show a marked decline.

40-watt incandescent LED replacement bulbs, brand manufacturers has fallen to $ 11.6 price

Replace 40-watt incandescent bulbs in the commodity portion of the LED bulbs in October, but not significant fluctuations in average selling prices, mainly due to impact of the European average selling prices. While most areas are still about 3% of the price decline, however, due to adjustment of European goods, the replacement of old and new goods affect the price of the average, making the average price in October, with September showing flat condition. Is worth noting that South Korea to replace 40-watt region is still relatively low commodity prices, especially prices of brand manufacturers continued under the current minimum price has to $ 11.6, $ 10 from LEDinside estimates the sweet spot is very close.

As prices continued to decline significantly, but also makes the LED bulb price per thousand lumens record low, the current average price per thousand lumens, the average has been below 48 U.S. dollars, and the market closer to consumer expectations. From the lighting trends, market acceptance has improved than before.

Therefore, many countries are adopting or considering policies to expand consumption subsidies LED light bulbs, energy saving light bulb usage. China has banned incandescent bulbs route announcement is also expected to be announced before the end of 2011 the recent subsidies or incentives. Taiwan, the current government s subsidy policy is still in the discussion, should be finalized in advance in order to meet market and international energy needs.

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LED light bulb cost has been better than incandescent

Posted on January 26, 2012 by admin

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Prospects of high-profile LED lighting applications, in the end when the LED bulbs will replace the traditional (40 watt) incandescent light bulbs, everyone concerned. Market research institutions LEDinside study, although at this stage in his LED bulb color, beam angle characteristics are not as good as traditional incandescent, the initial purchase cost prices are also much higher than the incandescent lamp, but if with life, luminous efficiency, electricity consumption and other projects look, LED light bulbs have been cost-effective than incandescent lamps.
 
LED bulbs on the evolution of color specification point of view, according to the US Department of Energy requirements, LED lighting products, color rendering (CRI) should be 80 or more, South Korea KS requirements of CRI in 70 or more. Currently the major brands launch of LED light bulbs, basic color have been staged to achieve national standards are above. But if compared with traditional incandescent, LED lamp color rendering is still not as traditional incandescent lamps.
 
Angle from the beam (light distribution properties) specification to view, LEDinside pointed out that the manufacturers introduced LED bulb, the beam size difference between a great degree angle, which is known to replace 40-watt incandescent light bulb in the LED, the beam angle from 120 degrees to 260 degrees are, up to 2 times higher than the gap. If the United States Energy Board and the Japan Electrical Manufacturers Association of the ball based on specifications, GE, Philip, Toshiba have launched up to 250-260 degrees beam angle LED bulbs products to meet the requirements.
 
However, if simply replace the traditional incandescent lamp standards, in principle, most of these products failed. Because incandescent light distribution is not a comprehensive directional light source, beam angle greater than 300 degrees, which is LED light-emitting properties (point source) is different.
 
Touches on cost-effective, although in line with the specifications of LED lighting to replace traditional incandescent products, the initial purchase costs are also relatively expensive price, but if with life, luminous efficiency, electricity consumption and other projects to assess, cost-effective LED lighting products, has more traditional incandescent lamp, revealing a comparative advantage.
 
For example, an incandescent lamp life is 1000 hours, three hours a day light view, an incandescent lamp can be used about a year (3 hours x365 days about 1,000 hours), the total cost of about $ 5.5 (including the early bulbs before acquisition costs plus electricity). And an LED lamp life of up to 25,000 hours, which is an LED lamp life is approximately equal to 40 with 25 watt incandescent bulb. This point of view, the use of LED lighting will be only the total cost of incandescent program of 40% to 50% (the US price as an example).
 
In addition, due to price different countries, for the use of incandescent lighting, LED lighting and the cumulative total cost, will have different effects. For example, in electricity bills more expensive in Japan, buying and using a total cost of LED bulbs, only about 40 watt incandescent with 25 to 30% of it. In other words, when users purchase the first three incandescent lamp, the cost of the total cost to start higher than the LED light bulb.
 
Overall, LEDinsid that, although many manufacturers claim that their LED bulbs have to replace the traditional 40-watt incandescent, but the real requirements and to meet all specifications of the LED bulbs to replace the threshold, or a minority. In these meet the specifications of the LED light bulb, its initial purchase price inferior to incandescent expensive. If, however, with LED lamp life, efficiency and other characteristics of view, LED light bulbs have been cost-effective than incandescent lamps.

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British report released LED street light energy efficiency significantly compared

Posted on January 26, 2012 by admin

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Recently, in the UK village of Market Overton Rutland County Commission issued the LED lights installed after the relevant report, the report shows a comparison of the energy previously used sodium status.

Reported that the application of LED energy saving lamps through the monthly average energy expenditure decreased from 80 pounds to 15 pounds, and estimated annual maintenance costs reduced to the previous year by approximately 90%.

It is understood that the project is expected to cost ￡ 20,000 in installation costs, 80% of the village street lights already installed timer switch, this switch to half past five in the night every night automatically shut down lights.

Currently, a new street light system, a significant energy saving has attracted wide attention around the other villages.

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Company intends to launch 32 Russian Optogan price of EUR 30 LED bulbs

Posted on January 26, 2012 by admin

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Russia-based LED chips, components and lighting manufacturer Optogan launched in the domestic market instead of a 60 W incandescent bulbs LED bulbs.

E27 bulb initially sold only in St. Petersburg and Moscow, priced at 995 rubles (about US $ 33). Optogan company expressed its intention in early 2012 price of 30 euros worldwide release of the product. The main characteristics of E27 bulb 720 lumens of light parameters including flow, 11W of energy and 3050 K color temperature.

Optogan that, E27 lamp efficacy of 65 lm / W, color rendering index of 80. Performance of this product compared favorably with other LED light bulbs, and the price is very competitive.

E27 is Optogan Moscow art.lebedev companies and co-design studio. Optogan president Maxim Odnoblyudov said: "E27 is Europe s leading scientists and cutting-edge technology and creative development with the leading Russian design studio together results."

He said: "Optogan structure ensures that our manufacturing from chip manufacturing to packaging to the final assembly of the entire production process can control the quality."

Optogan hope that the demand for LED lighting products, industrial and office applications from the start, lighting products in these areas will take longer to work, and retail applications are expected from 2013.

Optogan will be launched in 2012 in a $ 13 40W replacement bulb, and lower prices at the end of next year launch the 60W replacement lamps. Optogan s international sales director Ove S? Rensen said: "In the end of 2012, we hope to provide our end customers with a target price of around $ 15 60W replacement bulb. "

In addition, Optogan company is studying a 75W replacement bulb, is expected to launch in the middle of next year.

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intelligent lights LED Kunming project officially started production

Posted on January 26, 2012 by admin

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Recently, the Economic Development Zone, Kunming, the collective started five investment projects, production projects including LED intelligent lights, fresh shell semiconductor lighting project, Ziyun Bluebird Jewelry City project, the cloud-wing gear machine production of electronic information projects and standard plant with a total investment about 15 billion yuan.

5 projects involving energy-efficient lighting, gemstone industry, machinery manufacturing, factory and other industries. Intelligent LED street lamp project in which the production of energy by the Qing Technology Co., Ltd., Fujian and Yunnan Co., Ltd. joint venture development and construction of private investment, total investment of 3.5 billion, plans to introduce advanced technology and production lines in Germany, the construction of 300,000 units in high-power semiconductor processing (LED) packaging production base. Jin Bei semiconductor lighting project by Lighting Co., Ltd. Jiangsu Sufa construction of 65.8 million yuan investment, mainly produce LED lighting products, solar photovoltaic street and road lighting.

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IKO joint bearing maintenance issues with the ambient temperature

Posted on January 24, 2012 by admin

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Depending on site conditions and environmental conditions and the use of selected specifications of size, accuracy, with the appropriate joint bearings IKO bearing life and reliability is to ensure that the premise.
1, the use of the site: IKO Bearings for bear radial load mainly radial and axial joint load, usually paired with two sets of bearings, primarily for automotive front and rear hub, active bevel gear, differential , reducer and other transmission parts.
2, the permissible speed: install the correct, well-oiled environment, allowing for the bearing of 0.3-0.5 times the speed limit. Under normal circumstances, to 0.2 times the speed limit for the most appropriate.
3, allows the tilt angle: tapered roller bearings are generally not allowed to tilt axis relative to shell hole, if inclined, the largest not more than 2 \\ .
4, allows the temperature: in under normal load, and lubricant high temperature performance, and full lubrication conditions, the general bearing allows -30 ℃ -150 ℃ ambient temperature work.
Bearing temperature, generally outside of the bearing room temperature can be inferred, if the hole can be used to directly measure the bearing outer ring temperature, more suitable position.
Typically, IKO Bearings with bearing operating temperature slowly began to rise 1-2 hours to reach steady state. The normal temperature because of the machine bearing the heat capacity, heat capacity, speed and load vary. If lubrication, install the appropriate department, the bearing temperature will be rapid-rise, there will be abnormal high temperature, when to stop running, take the necessary precautions.
You can always use heat sensors to monitor bearing temperature, and to achieve the temperature exceeds the set value alarm or stop the axis of the accident to prevent burning.
Often expressed with a high-temperature bearings in unusual circumstances. High temperature is also harmful to the IKO bearing joint lubricant. Sometimes can be attributed to the bearing overheated bearing lubricant. If the bearing temperature over 125 ℃ even move to reduce long-term bearing life. Caused by high bearing the following reasons: lack of lubrication or over lubrication, lubricant. Contains impurities, the load is too large, the bearing ring damage, lack of space, and produce high-friction seals and so on.

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