Since the spring of 2006, China-Russia intergovernmental cooperation project invested by Merlin Group with a total investment of 250 million yuan has started. The first 25,000 tons of organic silicon plant in Jiangsu entered the phase of project completion and will be put into operation in the first half of this year. It is learned that at present, eight projects of cooperation with Russia in Taizhou have been included in the international cooperation in science and technology plan of Jiangsu Province. Taizhou City, Russia's science and technology cooperation as the focus of foreign cooperation, and constantly strengthen technical cooperation with the Russian scientific research institutes, a number of new products and new highlights of the frequent. Merlin Group and the Russian Institute of Chemical and Organic Compound developed a "silicone monomer" was included in the Sino-Russian government inter-governmental cooperation plan for international cooperation; Taizhou Chemical Industry New Materials Industrial Park was included in the national Torch Program Jiangsu and Jiangsu high-tech cooperation in science and technology with Russia base. The city and the Russian Institute of Chemical and Organic Compounds also jointly promote the Taizhou New Chemical Materials Industrial Park signed a cooperation agreement, the current number of enterprises into the zone reached six. The park will focus on the development of silicone and organic fluorine two series of products, and strive to total output value of 4 billion yuan next year, the overall strength and competitiveness into the ranks of the domestic advanced park. Since the end of 2005, Taizhou has another new electric centrifugal pump developed by Jiangsu Zhenhua Pump Co., Ltd. and "Marine Halogen-Free Flame Retardant PE Series Pipeline" developed by Jingjiang Haihong Plastic Co., Scientific and technological cooperation plan. Among them, the Zhenhua pump industry introduced the Russian technology development of "electric centrifugal pump", has reached the international advanced level.
Roller Bearing
Roller bearing, one of the two members of the class of rolling, or so-called antifriction, bearings (the other member of the class is the Ball Bearing). Like a ball bearing, a roller bearing has two grooved tracks, or races, but the balls are replaced by rollers. The rollers may be cylinders or truncated cones. Only radial loads (i.e., loads perpendicular to the axis of rotation) can be carried when the rollers are cylindrical, but with conical rollers both radial and thrust, or axial, loads (i.e., ones parallel to the axis of rotation) can be carried. A needle bearing has cylindrical rollers that are relatively slender and completely fill the space between the races; in many cases the inner race is dispensed with. Because there is line contact between a roller and the races, while in a ball bearing there is point contact, in a given space a roller bearing can carry a greater radial load than a ball bearing.
Roller bearings are used in all main shaft and auxiliary drive shaft applications to support pure radial load, and allow for axial shaft elongation due to temperature changes with no additional load effect on the bearing. They are usually located at the ends of the turbine and compressor shafts and are often mounted in a housing, but separated from it by a layer of pressurized oil known as a squeeze film damper.
In many cases, instead of having a separate inner race for roller bearings, the [inner race" is an integral part of the shaft or stub shaft. This reduces complexity, weight, and build-up of concentricity tolerances. Overall, this is cost effective, but the cost of replacement or repair is likely to be higher than for separate inner races.
Roller Bearing,Self-Aligning Roller Bearing,Double Row Roller Bearing,Neddle Roller Bearing
Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.lsjgbearing.com
