TM in polymer applications - bearing spindle bearings of knowledge

On main shaft bearing of 5000 r/min long work used the constant temperature tank cooling measures, but found that the main shaft increase noise, cooling effect is poor, the spindle speed is far from the design requirements of 8000 r/min, and found that the individual ball bearings, raceway burns and hair. According to FC ball of centrifugal force and gyroscopic moment formula of MG, ball under the condition of high speed, centrifugal force and gyroscopic moment are proportional to the increase, that is, the FC ∝ wc2 MG ∝ wcwbsin beta of wc - — Scroll to orbital angular velocity, °) wb— — Roller rotation angular velocity, °) β— — Angle to the public with the Angle, the Angle between the ( °) Bearings between the ball and the raceway of the relative sliding friction heat is increased, the phenomenon such as burns, hair. To this end, our factory made using TM test of polymer spindle bearing lubrication. TM polymer is a kind of suspension using high-tech production of superfine metal elements. To examine the TM lubricating properties of polymer, as shown in figure 1 device is adopted to improve the wear-resisting, withstand voltage test. 1. Jordan farmar ( 1 pound/individual) ; 2, 3. Connecting rod; 4. Bearing roller; 5. Bearing outer ring. 6. Motor; 7. Base note: this test unit pressure amplification ratio of 20 times test condition: room temperature 20 ℃, sliding velocity 10 m/s; Lubricating oil: it contains 10% of TM polymer 20 # main shaft turbine oil ( Note: the roller and outer ring bite dead for a test. Test results are shown in table 1) 。 When handling test results ( Remove two extreme value) , including and excluding TM polymer pressure ratio is 9. 4:1, the indentation area ratio is 1:12. 1. Using TM polymer oil do speed test of the spindle structure as shown in figure 2, the results are shown in table 2. Polymer based on table 2 test results indicate that using TM lubricating oil spindle bearings completely can satisfy the design of the high-speed spindle type noise and temperature rise of the technical requirements. Through the test result shows that polymer using TM lubricating oil can significantly improve the roller of nickel plating processing and outer ring anti-seizure ability, at the same time, the noise reduction effect is remarkable.