Why do so many industries need to Cylindrical roller bearing

Cylindrical roller bearing are widely used at present market is very hot, and in this process, the field of machine tools use some relatively wide. Scope of application: this bearing needle roller bearings are used for gearbox, motorcycle, automobile, Cylindrical roller bearing the small end of connecting rod. Gear. Because the cylinder temperature reducer, increase, so the bearing high temperature. With thin and long needle bearing roller (roller length is 3~10 times the diameter, the diameter is generally not more than 5mm), so the radial structure is compact, its diameter size and load capacity compared with other types of bearings at the same time, minimum diameter, especially for radial installation support results in limited size. full complement cylindrical roller bearing According to the use of different occasions, can be used without inner ring bearings or Cylindrical roller bearing and cage assemblies, the shaft neck surface and the surface of shell holes matched with a bearing directly as bearing inner and outer rolling surface, to guarantee load capacity and operating performance and have the same ring bearing, shaft or housing holes raceway surface hardness, the machining precision and the surface quality of bearing ring raceway and similar.

Backing bearings innovation capability

China's bearing industry currently faces three major outstanding issues: namely, industry production concentration, low R & D and innovation capability, low level of manufacturing technology. First, a low concentration of manufacturing industries. Bearing worldwide sales of approximately $ 30 billion, the world's eight major multinational companies accounted for 75% to 80%. Germany, the two companies account for 90% of the national total, bearings for rolling mills  accounted for 90% 5 of the national total, 56% of the United States one of its national total. In China, such as 10 Wazhou largest bearing company sales accounted for only 24.7% of the entire industry, before 30 production concentration of only 37.4%. Experts believe that the reasons for this: First, the original large state-owned enterprises due to problems on the system and mechanism, the relatively slow development; the second is the advantages of private, private enterprise is still in the growth stage; third is low-level redundant construction, industry factory point too scattered, General Bearing serious excess capacity. Second, Backing bearings low R & D and innovation capability. Due to funding the construction and operation, R & D and innovation, most companies invest in innovation system, personnel development and other aspects are still at a low level, precision bearings with research institutes towards enterprise service-oriented industry, the state has no common industrial technology research investment, thus weakening the industry-oriented research and development functions. Therefore, the entire industry, "the two least two weak" outstanding, basic research that is weak, participation in international standards development is weak, less original technology, less patented products. At present, our design and manufacturing technology is basically imitate, consistent system for decades. Product development capacity, and performance: Although a host of supporting domestic rate of 80%,Tapered roller bearings  but the high-speed railway passenger cars, luxury cars, computers, air conditioners, high levels of mill and other important bearing host support and maintenance, basically rely on imports. Third, the low level of manufacturing technology. Bearing industrial manufacturing processes and process equipment and technology development of China's slow, low CNC lathe, grinding low level of automation, there are only more than 200 automated production lines. Most companies, especially in the old state-owned enterprises as the main production is still traditional equipment.

the sun's energy into electrical energy drive motor and steering tires

NTN for the Institute to participate in the "World Solar Challenge" provides special bearing
This article Source: http://www.9-zc.com Date :2013 -08-07 11:34 Posted by: Point Vietnam Machinery
NTN Corporation (hereafter, NTN) will provide specially designed bearings for the Institute of the University to participate in the "World Solar Challenge" international solar car race was held in Australia in October this year. NTN interaction with the Institute of the University College of Engineering increased by Mechanical Engineering Tribology workshop, and the development of the motor shaft and Crossed tapered roller bearing as a student, "Institute of the University of automatic" support for the activities section, will participate in the first challenge.
 World Solar Challenge "is one of the largest solar car race in the world, participants race over 3021 km, through the Australian desert between Darwin and Adelaide, using the sun as the only power source. Has 20 years of history, Since 1987 began, the race attracts participants from around the world, including many universities and businesses. Institute's goal is to win in the game the first time on the podium.
 Solar car electric car, the sun's energy into electrical energy drive motor and Slewing bearing tires. With minimal power dissipation structure design requires long-distance driving using only electric power obtained from solar cells. Deep groove ball bearings NTN challenges provided by the JIS 5 magnitude, which is higher than the general JIS 0 级 two levels to help improve machining accuracy. Ceramic balls has changed ball rolling contact surface curvature is optimized to reduce the contact area and achieve a lower torque, while stirring resistance with minimal low-viscosity grease has been used. This helps to reduce 50% of the torque compared to conventional products. Gangdun has been changed to non-contact rubber seals to improve driving through the desert to prepare to resist the penetration of foreign substances.

Crossed roller bearings are widely used in life in what areas?

Crossed roller bearings between the inner and outer rings orthogonal collocation roller, is a compact structural bearings. Rolling surface for the line contact, thus bearing load caused by the elastic displacement is extremely small, and can also carry radial load, axial load and moment of complex joint load.
Such bearings are widely used require small high rigidity and high rotational accuracy of industrial robots, machine tools and medical equipment such as rotating parts.
Crossed roller Crossed tapered roller bearing  with cages, with spacers and full roller type, and other structures, rich variety series complete with cages and supplied splitter is suitable for high speed friction coefficient of the site, full roller suitable for low-speed heavy-duty area. Cross cylindrical roller bearings are sealed on the bearing side with special synthetic rubber seals, for dust and grease leakage excellent sealing effect.
1 Structural features: cross roller bearings, cylindrical roller is at 90 ° to the surface of the V-shaped groove rolling through the isolation blocks are arranged perpendicular to each other, so the cross roller bearings can bear radial load, axial load and torque load and other multi-directional load. Inside and outside the ring size is small, thin form is close to the limit of small size, and has high rigidity and precision can reach P4, P2 class. Therefore suitable for industrial robot joints and rotating parts, machining centers rotary tables, robots rotating part, precision rotary tables, medical equipment, calculators, IC manufacturing equipment and other equipment.
(2) rotating accuracy: the bearing arranged vertically with spacers between the rollers to prevent the inclination of the rollers and friction between rollers, reducing the rotational torque. Further, compared to the previously used steel retainer, does not occur in one contact of roller or seize. Meanwhile, due to inner or outer ring is two split bearing clearance adjustable, even if they are applied preload can be obtained with high precision rotary motion.
3 Use the features: the inner or outer ring is split, load rollers and spacer retainer after the Cross-Roller Ring and fastened together to prevent separated from each other, so when you install the Cross-Roller Ring is simple . By spacing allows eliminates friction between rollers to prevent the roller side to, so that it can obtain a stable rotational torque. Since the rollers are arranged to cross, so only one set of Cross Roller Ring can bear loads in all directions, compared to conventional models, rigidity increased by 3 to 4 times

Establishment of the Institute's first petroleum machinery bearings

China's bearing industry's only petroleum machinery Bearing Institute, recently in Ningxia Northwest Bearing Corporation announced the establishment of science and technology innovation conference. At the same time, announced the establishment of rail transport also bearing
China's bearing industry's only petroleum machinery Bearing Institute, recently in Ningxia Northwest Bearing Corporation announced the establishment of science and technology innovation conference. Meanwhile, rail traffic was also announced the establishment of such 12 Bearing Research Institute Institute.
Institute of Petroleum Machinery Bearings Bearing Factory is a former Northwest Tapered bearing Institute came into being after several reform and restructuring. The Institute holds the petroleum machinery bearing core design and manufacturing technology, the combination of scientific and technical personnel Northwest bearing workers and leaders of several generations of hard work sweat and wisdom. Relying on the Institute, Northwest bearing stock company produces various types of petroleum product life performance precision mechanical Crossed tapered roller bearing the same period reached the international level of similar products in the domestic petroleum machinery manufacturing enterprises industry reputation, becoming the first brand of domestic petroleum machinery bearings. Products cover all areas of domestic petroleum machinery and equipment, and exported around the world. The company developed the production of petroleum machinery bearing in its heyday China's bearing industry has accounted for similar products in the domestic market share of more than 80% export market share above 90%. To improve the core competitiveness of enterprises, survival and development of enterprises play a vital role inView from the composition of imported bearings, deep groove ball bearings of the year has changed, a slight increase in other products is basically the same with the previous month, only the angular contact ball bearings, thrust ball bearings, cylindrical roller bearings and tapered roller bearings a slight increase in imports. Use of foreign exchange, in addition to the number and thrust ball bearings are in the use of foreign exchange turnover growth, tapered roller bearings, angular contact bearings, cylindrical roller bearings imports growth but with the amount of foreign exchange, although they are all declining. Overall, imports and use of foreign exchange turnover has shown a decline.

Growing economies of scale

China into the world's annual output of bearing ten billion sets of bearings manufacturing country's third-largest
"Over two years in advance of the completion of the 'Eleventh Five-Year Plan' original main business income of 84 billion yuan, bearing yield eight billion sets of economic output target." June 26, China Bearing Industry Association, honorary chairman Zhang walk on stilts who In a sixth member of the Association conference that the work of bearing industry has made considerable progress in the industry to achieve a fast and steady development and become the world's third-largest bearing manufacturing country.
Although the financial crisis on the impact of the Slewing bearing ndustry since last June began to show. January to April, the bearings industry realized a total profit of 630 million yuan, down 29.94%. But in April profit growth of 44.94%, compared with a March MoM decline, but continued to show positive growth, benefits were optimistic upward trend. Zhang walk on stilts who believes that the impact of the international financial crisis, the stage of the lack of market demand and market competition at home and abroad will be very prominent contradictions. But they are also industry deepen reform, structural adjustment, to upgrade the industry level of appreciation. China Bearing Industry Association expects China's bearing industry in 2009 overall economic growth will be around 10%.
Growing economies of scale
In reviewing the four years of development, Zhang walk on stilts who said that in 2005 to 2008 in four years, industry sales revenue and bearing all the average yield increase 18.52% and 19.52%, to achieve the industry's rapid growth.
In 2008, China's exports amounted to 3.39 billion sets of bearings, an increase of 2.75% over last year; exports worth $ 2.97 billion, an increase over the previous year 38.07%; imports Crossed tapered roller bearing 1.58 billion units, 0.73% lower than the previous year; use of foreign exchange $ 2.69 billion, an increase of 24.99% over the previous year. Trade surplus reached $ 280 million, a record high.
Types of enterprises in various economic sectors have developed rapidly in Wazhou represented by large state-owned enterprises maintained a strong momentum of development, become the backbone of the backbone of the industry to Pegasus, the influx of money, the people as represented by the rapid development of private enterprises . The end of 2008, industry-wide state-owned, private, foreign-funded enterprises proportion of 14:66:20, the proportion of private enterprises increased by 16 percentage points, to become a vital force in the industry.
Cluster trend more apparent
Zhang walk on stilts who said in recent years, China's bearing industry has gradually formed a regional development, characteristics, capacity and product level, professional collaboration is further improved. To the end of last year, the entire industry the main business income of over a hundred million enterprises reached 114, 66 more than in 2005 increased by 48, to complete the main business income of 55.55 billion yuan, 27.7 billion yuan more than doubled, accounting for the entire industry rose from 61% in 2005, increased to 63.13%.
The typical areas of Liaoning Wafangdian major equipment class bearings, Luoyang Bearing and spare parts production and research clusters, Zhejiang precision small bearings, needle roller bearings and bearing in Jiangsu and Zhejiang bearing equipment blanks, Shandong Liaocheng bearing frame and so on.
Among them, Wafangdian was awarded the "China bearing capital" title; successful implementation of Luoyang Bearing Group Corporation policy bankruptcy, composition Luoyang LYC Bearing Co., restructuring after the transformation of the reform in 2008 the main business revenue reached 3.32 billion yuan more than doubled in 2005 to 1.62 billion yuan.
In addition, bearing in Chengdu Tianma Group after the acquisition, and the acquisition of Rainbow Mountain and North were bearing, but also cross the acquisition of Qiqihar Heavy CNC machine tools. Ningbo MOS Group established in the northeast of the northern companies, investment in the production of large precision bearings, wheel bearings and automotive bearings; person acquired by the Group in Hangzhou, Wuhu bearing plant after he acquired the Yellowstone bearing plant, further expand the scale of capital.

Supply slewing bearing slewing different specifications

Slewing professional manufacturer - Henry Xuzhou Ltd. is engaged in manufacturing slewing ring slewing bearing and special gear technology research and development and manufacturing of professional manufacturers, the company well-equipped, strong production capacity, strong technical force, a variety of detection means complete, and received several certificates and honors. Products include: single-row slewing bearing, double row slewing wheel bearing  three-row roller slewing bearing, cross roller slewing bearing, double row ball slewing bearing, slewing ring ball column combined six series of slewing wind turbine earing, I the company mainly produces all kinds of slewing bearing; particularly good at designing, manufacturing all kinds of non-standard shaped slewing bearings, slewing ring and provides maintenance and repair services. Slewing bearing products in our real life was on a wide range of applications, known as "the machine joints", widely used in engineering machinery, construction machinery, environmental protection and light machinery, mining and metallurgical machinery, port and ship machinery, food and packaging machinery, petrochemical machinery, construction vehicles and military equipment, and instrumentation and other industries. With a compact, light weight, rigid structure, smooth operation, high precision, safety and reliability.

Through restructuring to enhance the production capacity of cross roller bearings

 Currently the only professional development, production and sales of precision turntable bearings and thin-walled cross-roller bearings. The main products are series of high-precision YRT turntable bearing, thin-walled cross-roller bearings, precision grade P5, P4, P2 class, the size range is OD φ1800mm-φ50mm. Standard turntable bearings YRT turntable bearing series, YRTS speed turntable bearings, YRTM angle measuring system with turntable bearings, ZKLDF way thrust angular contact ball tapered bearing  Thin section crossed roller bearings with SX, CRB, CRBC, CRBH series, RB, RE , RU series; crossed tapered roller bearings have XR, JXR series. The company's core products after years of technology development, technology is mature, excellent quality, and accuracy of the technical indicators have reached similar foreign product requirements, breaking the foreign companies of similar products in the domestic long-term monopoly. The major products for precision CNC rotary table, dividing head, military radar, aviation, aerospace, and measuring and test requirements of high precision field.
Companies focus on modern management model, has passed the ISO9001 international standard quality system certification. Production management by computer network control, product development, process planning professional bearing design software has been adopted to achieve a high efficiency, high-quality bearing R & D capabilities. Professional technical team and standardized management system is our products high precision and high quality of effective protection.
After years of core product technology research and development, continuous improvement for the user's needs, repeated practice, mature technology, excellent quality, and accuracy of the technical indicators have reached similar foreign product requirements, breaking the foreign like product in the domestic long-term monopoly! Designed to create "high, fine, sharp" bearings, mainly used in high-precision CNC rotary table, robot joints and rotating unit, dividing head, aviation, aerospace, military radar, precision medical instruments and measuring and test the high accuracy fields. Since its inception, on the development of precision bearing production as the company's development direction. Company focus on technological innovation, tracking international bearing industry trends, emphasis on new product development to protect, three years have been China National Bureau of knowledge-based industries reporting 7 utility model patents. Company has more than 400 domestic and foreign customers, target customers are CNC machine tool industry, aerospace, precision instruments, military radar, precision medical equipment and other industries, the company has independent import and export right, 50% of products are exported to Europe, North America, etc. countries and regions, and occupy 70% of the domestic market YRT turntable bearing.
Turntable bearings and cross roller bearings in the function and structure is quite similar, such as in high-rigidity, high-precision, high-speed rate of the superb performance. In the CNC Rotary, vertical machining centers, vertical grinders and other high-precision CNC machining equipment more and more away from traditional design, with better performance and high-precision cross roller bearings YRT turntable bearings.
YRT turntable bearing turntable bearing or also known as the domestic popular wheel bearings, Germany INA has developed a similar three-row roller combined slewing bearing type structure, relative to the three-row roller combined slewing structure, small size , high level of accuracy, high rigidity, large load, and anti-corruption and so on. Mainly used in high precision CNC rotary table, CNC indexing plate, vertical machining centers, vertical grinder, radar, high-precision medical equipment.
Crossed roller Roller bearing known as cross roller bearings, cylindrical roller generally use roller or tapered roller in a single raceway cross mutually arranged between the roller and the roller cage or through isolation block interval, with high rotational accuracy, the larger the capacity, the smaller dimensions and a higher rotational speed and rigidity, with a very wide range of uses. For industrial robots, welding robots, medical equipment, etc. load smaller, lower accuracy class mechanical fields.
YRT turntable bearings and cross roller bearings in all respects with traditional bearings insurmountable advantages.
On the structural front, YRT turntable bearings and cross roller bearing structure is much simpler compared to conventional bearings, arranged through a multi-row cylindrical rolling elements, it can get quite large axial, radial bearing capacity and overturning moment, the structure is relatively simple much, while the traditional bearings must be ordered through multiple sets of bearings, in order to achieve the same effect, which in the design and assembly installation will bring a lot of convenience. YRT bearing three row roller combined slewing bearing structures and cross roller bearings, single row raceway structure, as opposed to conventional bearings, occupy much smaller space equipment, assembly difficulty is significantly reduced.

TV shaft GT-0029-Y43

TV shaft GT-0029-Y43
Oversize full cross-tapered Roller bearing roller half cone angle quickly select Pei Hongtao (Luoyang Bearing Group Co., Ltd. Technology Center, Luoyang, Henan 471039) Abstract: The full crossed tapered roller slewing bearing roller half cone angle selection is more difficult This paper will pick roller half cone angle of tedious calculations to be simplified lookup table approach,
Model: GT-0029-Y43
Brand: GT
Positioning holes: L15.5 * W48mm
Material: SPCC
Torque: 20kg-50kg
Available size: 17 "-26"
Forward back: forward 5 degrees / 15 degrees backwards
Left rotation: /
Surface treatment: Electrophoresis Black
Life Test: 5000 times
Success Story: Skyworth Y43 models in use
  Product Name: TV shaft GT-0012-2D26
Model: GT-0012-2D26
Brand: GT
  Positioning hole: 24 * 122 * 150mm
Material: ABS / Aluminum / SGCC
Torque: None
Available size: 26 "-42"
Forward back: /
Left rotation: /
Finish: /
Life test: /
Success Story: TPV 2D26 models in use

Comprehensive inspection of the bearing quality testing

  Finished products Crossed tapered roller bearing quality testing methods and requirements involves a broader, this chapter will be finished bearing common quality requirements, clearance requirements, size and rotation precision quality testing for quality requirements set forth. In addition, the bearing test equipment used to make some brief.
Bearing in finished products and parts for inspection, testing should follow certain rules. Rules include how sampling, testing project which is a major project, which is a secondary project, check the level and the acceptance quality limit and so on. Inspection rules can be generic requirements, it can be self-bearing manufacturer's requirements, but not below industry standards. This chapter only bearing product testing principles, methods will be described.
Residual magnetic bearings on bearing life has a great influence. A residual magnetic bearing, is not easy to remain in the bearing surface of the metal wood cleansed, and even some equipment at work iron generated in the end, may also be adsorbed on the working surface of the bearing, this will accelerate the bearing wear, thereby reducing its life.