INA high temperature bearing speed limit

INA bearings with grease lubrication and oil lubrication ( Oil bath lubrication) When the limit speed is shown in the table bearing size respectively, its numerical representation standard design of bearing in the general load ( C/P/≥13，Fa/Fr≤0. 25 or so) The threshold of the next rotation speed. In addition, the bearing lubricant according to their kinds and brands, may also is superior to other performance but is not suitable for high speed rotation. Load condition C/P< 13 ( The equivalent dynamic load P more than about 8% of the basic dynamic load rating C) , or synthetic load under the axial load in more than 25% of radial load, want to use to modify the limit speed. Rotational speed of the bearing are mainly affected by the INA bearing friction inside the fever caused by the limitation of temperature rise, but after speed exceeds a certain limit, because of the high temperature bearing would burn and cannot continue to rotate. Note: (measuring bearing radial clearance 1) As far as possible, using special instrument measurement method; ( 2) Push method have higher measurement skills required measurement. The method measuring error is bigger, especially clearance are in a state of edge, easy to cause error, at this point, the instrument measurement shall prevail; ( 3) Feeler, should according to the provisions of the standard operation, shall not use the roller from feeler rolled past way to measure; ( 4) Measurement process, should guarantee the ball fell into the ditch; Closed type bearing measurement in front of the closed; Using lotus instruments, measuring value minus the load caused by the clearance increase. ( 5) For multiple columns bearing for each column clearance, clearance the arithmetic mean of the columns as a high temperature bearing radial clearance. INA bearing limit rotational speed is not burned to produce friction heat and the threshold of the continuous rotation speed. As a result, high temperature bearing limit speed depends on the type, size, and precision bearing and lubrication method, the quantity and quality of the lubricant, keep the frame material and a variety of factors such as type and load conditions.