Currently, the bearing industry has shown a trend of internationalization of domestic competition. Nearly 80 percent of the world bearing market is split bearings eight foreign giants, of which 40% share from the Chinese market, mostly for high-end products. Not only that, but also to increase investment in the world bearing the giant forward China's low-end market expansion; while domestic companies manufacture products fatigue testing machine 90% of the low-end products, squeeze traditional markets through price competition. Under the pressure of the squeeze, urgent need to find a new market space.
Reduce the opportunity cost of the predicament in demand
Since the economic downturn, cost reduction became the needs of all businesses. Domestic enterprises to break high precision bearing through a host of foreign barriers, reduce costs and improve competitiveness, the demand for high-end products to replace imports increased significantly; equally to reduce costs, foreign companies and therefore increase the amount of purchases in China. To seize this opportunity, ZWZ to cultivate new growth points in the high-end bearings breakthrough, a breakthrough on the international market, the adjustment of product structure, the development of high-end products, to explore the international market and domestic high-end market.
Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2014年6月12日星期四
2014年5月8日星期四
2014年4月8日星期二
double row and four row circular cone roller bearings
Tapered roller bearing mainly bear radial primarily diameter, the axial load. Bearing capacity depends on the Angle of the outer ring raceway, the greater the Angle, the greater the carrying capacity. The separated type bearing is a bearing, according to the wind turbine bearings the number of columns of the scroll body can be divided into single row, double row and four row circular cone roller bearings. Single row tapered roller bearing clearance to users in the installation adjustment; Double row and four row circular cone roller bearings clearance has according to user requirements for a given when the products leave the factory, not the user.
Have a conical taper roller bearing inner ring and outer ring raceway, the tapered roller are arranged in between. All projection line on the surface of the cone axis high precision bearing the same points together. This design make the taper roller bearing is especially suitable for composite (radial and axial load. Bearing axial load capacity is mostly determined by the contact Angle alpha; Alpha Angle is larger, the higher axial load capacity. Angle size by calculating coefficient of e; E value, the greater the contact Angle, the greater the bearing axial load of the greater applicability.
Have a conical taper roller bearing inner ring and outer ring raceway, the tapered roller are arranged in between. All projection line on the surface of the cone axis high precision bearing the same points together. This design make the taper roller bearing is especially suitable for composite (radial and axial load. Bearing axial load capacity is mostly determined by the contact Angle alpha; Alpha Angle is larger, the higher axial load capacity. Angle size by calculating coefficient of e; E value, the greater the contact Angle, the greater the bearing axial load of the greater applicability.
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