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圆柱滚子轴承结构特点及系列型号

圆柱滚子轴承结构特点及系列型号

        机床主轴对轴承旋转精度的要求极高。高精度圆柱滚子轴承​具有高刚性和高承载能力的同时，达到了高转速性能和小横截面高度较好地结合，小的横截面高度使多轴装配时轴距更小。由于圆柱滚子轴承能够补偿受热限制的配合部件的长度变化，所以它们是浮动轴承的理想选择。

机床使用的高精度圆柱滚子轴承有多种结构可供选择。尺寸系列19和10生产的是单列轴承，而尺寸系列30和49生产的是双列轴承，单列和双列圆柱滚子轴承的孔径和外径在各个直径系列范围内完全相同。

锥孔高精度圆柱滚子轴承标记带后缀符号K并且按1:12的锥角生产。主要被适用干机床制造业，锥形孔在装配时可通过轴锥形支承面上的轴向移动来调整径向游隙和预载。

单列圆柱滚子轴承-----N19…(K)/N10.…(K)系列 双列圆柱滚子轴承------NN30…(K)/NNU49…(K)系列 我司生产的N系列和NN系列轴承为内圈有挡边，外圈无挡边结构: NNU系列轴承为内圈无挡边，外圈有挡边结构。需要其它结构请与我司联系。虽然单列以及双列高精度圆柱滚子轴承上可以取下有固定挡边和滚子组的轴承套圈，也就是说它们不是单独固定的。这主要有助于简化轴承的安装和拆卸。

高精度圆柱滚子轴承以理想的方式把承载力、刚度和可达到的转速结合起来。结构NNU的轴承在很低装配的支承中可达到一个高的系统刚度，而相对于结构NN来说，它们的承载力要小些。 单列高精度圆柱滚子轴承结构系列19和10在速度上更具优势。

 

Machinery Manufacturing Co., Ltd. Dalian Tailida on-line

MachineryManufacturingCo.,Ltd.DalianTailidaon-line

2018

01-30

Reporters Muzi reports: Mainland Construction Machinery Industry stride towards international

Reporters Muzi reports: Mainland Construction Machinery Industry stride towards international, mainland officials estimate that by 2015, China will become a major exporter of machinery industry, accounting for one-tenth of global demand. Many companies are interested in using Hong Kong's capital market, to expand overseas. However, concerns China's core components of the industry is still dependent on imports, called on the government in the "five" plan to encourage innovation to enhance the content. 5 years up to $ 20 billion exports 　　Although the global manufacturing industry to enter the adjustment period, but the Chinese industry is still the situation is excellent, the China Construction Machinery Association, Jun Qi in an interview means that next year's construction machinery industry growth may slow, but still maintained double-digit growth . By 2015, industry sales will reach 900 billion yuan, expect profit margins to 7%, of which 30% is exported. He pointed out that estimated that by 2015. the international market demand for construction machinery products will reach $ 200 billion, of which China's exports accounted for $ 20 billion may be about to become a major exporter. 　　Widely believed that the government's "five-second" planning a little conservative, in which large-scale engineering machinery enterprises as the Mainland, Guangxi Liugong has been set for the next five years, sales of 50 billion plan. Guangxi Liu Gong newspaper that President Yang Yichuan, which accounts for one third of the international export hopes, more than 100 million. He pointed out that China after several years of construction period, the demand for heavy machinery into the saturation plateau, the preparations should be early to go to other developing countries, India, South Asia, South America is a very promising market. 　　Speed ​​up overseas acquisitions to be listed in Hong Kong 　　To improve market share overseas, Liugong was first taken abroad in the middle, planned acquisition of Polish HUTASTALOWAWOLA (HSW), which is the second two years ago Zoomlion to € 271 million acquisition of CIFA of Italy's top construction machinery enterprises, the Chinese construction machinery company in the overseas market, the second acquisition. 　　Yang Yichuan said that the future will continue to identify good acquisition, there are plans to set up overseas headquarters in Hong Kong to co-ordinate all international business, and its push to mature companies listed in Hong Kong to expand its international influence. Called on policy support to help industry 　　China construction machinery to become a big country, one of the core components is constrained to rely on imports. Zhang, chairman of Elcoteq Heavy steel frankly, the import price for the domestic price of 10 times, he hoped that the Government could take the lead, enterprises and universities to support their own research and development, Yang Yichuan also said that the current R & D costs Liugong 5% of total revenue, the future will gradually improve, but he stressed that this is not a company to resolve the matter, need the government to come forward, the list will be national policy, make overall planning, Japan, for example, is from the R & D to sales are more policy support. 　　China Construction Machinery Association, Working Committee Secretary-General Feng Gui agents infants and pointed out that China is not without ability, the key is related to consciousness is weak, the government needs determination, hope in the "five" components during the development of supporting policies to encourage the introduction, in order to support industry long-term development. 　　Been hailed as the dean of large-scale construction machinery Professor Sun Zuwang pointed out that China is technically not particularly difficult to overcome, not the key is to manage with, for example in the production of cleanliness, the workers can not be executed.

2018

01-30

Equipment manufacturing industry in Liaoning have been a one-third of the world.

     This is the central implementation of the northeast since the strategy of revitalizing old industrial bases, equipment manufacturing province accounting for the proportion of industrial added value reached a record high.      As the current statistics, the province's total number of enterprises above designated size equipment manufacturing industry has reached more than 8,000 households, compared with a net increase of more than 2,000 households last year. The challenge facing the international financial crisis, the size of the equipment manufacturing industry in Liaoning grew and grew. January to May, the province's industrial added value in the equipment manufacturing industry 88.752 billion yuan, up 18.1%; above-scale industrial enterprises of the province's total industrial added value up 31.8% share.      In recent years, the provincial government to give priority to the development of equipment manufacturing industry restructuring, Liaoning Province, identified as a priority, to accelerate the construction of Shenyang and Dalian West Industrial Corridor "along the two areas," two world-class equipment manufacturing base in the strategic deployment. As traditional industries in Liaoning's equipment manufacturing industry in the province's overall economic development pattern is becoming increasingly prominent. This year is the first pillar industry in Liaoning's industrial equipment manufacturing, continue to overcome the international financial crisis and other negative factors, to further build on this. The first five months of above-scale enterprises in the province's total industrial added value rose from 2002 to nearly 1 / 4 to nearly 1 / 3, the first pillar block header increases.      Investment rise, not fall. This year, the province's financial discount on technological renovation funds to invest in the equipment manufacturing industry for nearly half, to lead all financial discount to invest in social capital equipment manufacturing, financial discount capital of Liaoning has a total investment of 7.39 billion yuan to support the 39 equipment items, technical innovation investment discount capital 190 million yuan, accounting for 47.6% discount on technological renovation funds, many large projects stronger the equipment manufacturing industry,Brilliance Group A-Class production line, ZWZ-megawatt wind power project and parts localization Yuanda Group 1.5 MW wind power equipment and other advantages and growth projects are to become beneficiaries,January to May, the province's equipment manufacturing industry investment in fixed assets totaled 57.43 billion yuan, up 60.7% over the province's industrial fixed assets investment growth 16.4 percentage points higher, is the "Eleventh Five-Year" has been the fastest-growing fixed asset investment year, accounting for the province's industrial fixed assets investment rose 38.1%. Investment of 2 billion yuan of equipment manufacturing projects 200.      Growing small and medium enterprises, key enterprises bigger and stronger. In the global financial crisis, Liaoning contrarian flying equipment manufacturing SMEs, the first five months, more than 2000 enterprises into large-scale enterprises. Meanwhile, a number of key corporate position to continue to consolidate. The first five months, China CNR Dalian Locomotive Company realized an industrial output value of 2.33 billion yuan, up 116.5%; TBEA change of industrial output value of the company 1.74 billion, an increase of 61.9%; DHI DCW Group to achieve road industrial output value of 6.48 billion yuan, an increase of 47.9%.      Restructuring to accelerate, growing new industries. This year, Liaoning's equipment manufacturing industry to further expand the field of development, a group of companies has grown to a new leader in the field. DHI DCW Group Road from the beginning involved in wind power equipment industry's most high-end target, and now has become China's largest MW wind power equipment manufacturers, following the mass production of 1.5 MW device, the 3 MW wind power equipment has been developed successful, will mass, Liaoning Xinfeng Enterprise Group Co., Ltd. through the introduction of technology, development and production of world-class high-pressure common rail diesel engine electronic control system with independent intellectual property rights, to fill the gaps, an annual output of 400,000 sets, Chinese high-pressure common rail system, step into the world-class.

2018

01-30

Liaoning: equipment manufacturing en

The province's auto sales rose month by month, the backbone of shipping enterprises

2018

01-30

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