High-speed spindle bearings oil and gas lubrication
Effective control of high-speed rotation of the spindle bearing temperature rise is an important indicator of the spindle, the spindle temperature rise and bearing are closely related. Methods to reduce the bearing temperature rise are: (1) to reduce the dynamic friction bearing; (2) to adjust and improve the bearing cooling environment. Commonly used electric spindle lubrication in the following ways: 1. Grease lubrication Under normal circumstances, the bearing unit of time calorific value increases with temperature rise, the viscosity of the lubricant will drop. In order to avoid bearing burn, you must fully add lubricants. However, the increase of oil also increases the resistance of stirring and increases the frictional loss, which increases the resistance of the spindle. If the grease with a trace of lubrication, not only fail to achieve the purpose of low friction, but also bring out the heat of the bearing. High-speed rotation of the spindle speed, so that accelerated deterioration of grease, reducing grease life. 2. Oil mist lubrication In the current high speed grinding CNC grinding spindle lubrication oil mist lubrication, oil mist lubrication is a trace lubrication to reduce the friction loss but also reduces the bearing temperature and improve the service life of the spindle. Another advantage is that due to the electrical spindle oil mist lubrication bearing within a certain pressure, to avoid the abrasive particles into the spindle housing to cause electrical spindle damage. However, oil mist lubrication there is environmental pollution and oil control inaccurate issues. 3. Oil and gas lubrication Oil and gas lubrication has the following characteristics: (1) A very small amount of lubricating oil can be continuously and steadily supplied to the bearings; (2) There is little environmental pollution and the oil- The degree of air pollution in the measuring box is about 0.03mg / m. Pollution less than oil mist lubrication, the reason is that oil-gas lubrication oil mist lubrication less, and the lubricating oil and compressed air to the gas-liquid two-phase flow into the bearing. (3) Dust or water and cutting fluid difficult to enter the spindle bearings, compressed air to maintain positive pressure within the spindle bearings. Prism Scopes Kit,Prismatic Spotting Scope,Rifle Prism Scopes,Prism Scope Vs Regular Scope Nantong Dinggo Optical Instrument Co.,Ltd , https://www.riflescopeofficial.com