The test machine can be used to assess a variety

In order to overcome the existing ball bearing rolling contact fatigue life testing machine due to contact points less, or rolling / sliding state, or for other additional structures and other shortcomings, especially the design of a new type of three-point reinforced pure rolling contact fatigue testing machine . Of its kind to be tested in the same wind turbine earing only been three times on the largest non-circular cross-section, but such intensity intervals cyclic contact loading effect, and for pure rolling along the circumference of this circle, the maximum speed of the ball specimen 23000r/min, the contact load reaches 4000N, maximum Hertz stress up 7Gpa. Three contact points coexistence in the same maximum rolling circumference. Load is amplified by the lever mechanism acting on the test ball. Paternity test measured the ball was two roller support, while two paternity test has been roller bearing roller bearing guide wheel and. Contact stress up Gpa. The temperature rise test ball with thermocouple measurements. When the test ball fails to increase the output value to stop the vibration test.
     The test machine can be used to assess a variety of materials bearing ball rolling contact fatigue performance.
Main features technical performance:
     High-speed, heavy-duty, simple structure, the test time is short, high efficiency, wide range of tested ball, and practical.
     1, the test sample high speed of the ball, the contact stress, to achieve an efficient test, if the number of cycles is 1 * 107, only 150 minutes.
     2, the test sample contacts the ball with 3-point while three contact points equal to the maximum contact stress.
     3, the test sample ball only to the maximum force on the circular cross-section and along the circumference of this circle for pure rolling.
     4, simple structure, low cost, easy to operate, easy to implement real-time control of its increase the reliability of the test.
Technology applications analysis:
Purpose:
     The ball can be used for conventional rolling contact fatigue life test, but also for assessment of new materials such as ceramic ball rolling contact fatigue life.
     With the expansion of the ceramic bearing demand, ball bearing will increase fatigue test, which will bring about fatigue testing machine needs. Currently there are more than two hundred bearing plant, five per household necessities calculation takes more than one thousand units.