In recent years, due to the rapid development of downstream industries such as chemical and petroleum, the pressure instrument industry has achieved rapid development both in terms of production technology and production scale. Pressure gauges range from mechanical pressure gauges to mechanical and electronic pressure gauges, to diaphragm seals, and pressure calibration equipment, and cover almost all pressure gauges and pressure testing equipment. People in the industry all know that the current domestic instrument manufacturers are divided into two major companies, state-owned enterprises and private enterprises, and each has its own advantages. In the early days, because the core technology of pressure meters was in the hands of foreign manufacturers or a few domestic manufacturers, such as pressure sensor technology as the core technology of pressure transmitters, only a handful of manufacturers mastered them, and high-end technologies were monopolized by foreign manufacturers. This situation has greatly hindered the development of pressure gauges in China. However, with the development of China's instrumentation industry, companies pay attention to R&D, many monopoly technologies have begun to be broken, and private enterprises in the pressure instrument industry have also achieved considerable development.
However, in recent years, sales of transmitters by multinational companies in China have increased significantly. In addition to the introduction of technology or joint venture production this way. Siemens, Germany EH. ABB has established its own wholly-owned pressure instrument production line in China. It can be seen that the competition of private enterprises in the Chinese pressure market will become increasingly fierce.
Swing Bearing Also named Swing Circle, Slewing Ring, The slewing bearing of excavator realizes the rotation of the device by the action of friction and lubrication, which can drive the mechanical rotation and provide support capability in excavator.
A slewing bearing or slew[ing] ring is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill. (To "slew" means to turn without change of place.)
Swing Bearing,Excavator Swing Bearing,Swing Bearing For Excavator,Swing Bearing Replacement
Jining Tongderui Construction Machinery Co., Ltd. , https://www.tdr-excavatorparts.com