Bearing for ultralow-temperature liquid pump

[0009] Specific implementation mode one: combine Figure 1~Figure 3 Explain that the ultra-low temperature liquid pump bearing of this embodiment includes an outer ring 1, an inner ring 2 and a plurality of spherical rolling elements 3, the outer ring 1 is set on the inner ring 2 and the two are arranged concentrically, and the inner ring of the outer ring 1 A plurality of spherical dimples 4 are evenly distributed on the circumference where the circumferential surface is located in the middle and the outer circumference of the inner ring 2 is located in the middle. A plurality of spherical dimples 4 on the outer circumferential surface of the inner ring 2 are provided in one-to-one correspondence, and a spherical rolling body 3 is arranged in each corresponding spherical dimple 4, and the width of the outer ring 1 and the inner ring 2 is equal. The bearing also includes two annular cages 5 and a plurality of tubular rivets 6. The widths of the two annular cages 5 are equal, a...

[0011] Specific implementation mode two: combination figure 1 To illustrate, the tubular rivet 6 of this embodiment is a stainless steel hollow rivet in a soft state. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0012] Specific implementation mode three: combination figure 1 Note that the sum of the widths of the two annular cages 5 in this embodiment is 43-4 mm. The undisclosed technical features in this embodiment are the same as those in the first or second specific embodiment.