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Analysis of high-speed angular touch ball bearings used in machine tool spindles
Source: China Bearing Network Time: 2018-03-05
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Once in the oil and gas smoothing method; if it is rotated at high speed, it will produce an air curtain (Air Curtain). This will not only make the smooth oil difficult to enter the bearing, resulting in a lack of smoothness; and will also produce wind cuts. In order to deal with these problems; Spinshot II The method of supplying smooth oil from the inclined portion of the outer diameter of the bearing to the inside of the bearing is adopted. Therefore, the smooth oil can be prevented from being blocked by the air curtain and smoothly entering the inside of the bearing.
The new product improves the nozzle layout; it is grooved on the circumference to reduce the air pressure; the wind cuts are reduced. The noise is 3dB (A) less than the previous oil and gas smoothing method. Because it is also small in air flow. It can supply smooth oil to the inside of the bearing; therefore, the air consumption is only 10NL/min; it is reduced to about 1/2.
The holder is made of PEEK (polyetheretherketone; Polyetheretherketone); the outer ring and the inner ring are made of the bearing material "SHX data" made by Seiko, Japan. The SHX data is based on the addition of silicon (Si) and manganese to the carbon steel. (Mn) and molybdenum (Mo) low-alloy steel after roughing; through the high temperature, let carbon and nitrogen together into the surface of the surface to improve the appearance of surface hardness; and the appearance of Si-Mn-N fine nitride . Has high strength, resistance and sinter resistance.
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