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Limit speed of UCP 204
The limiting speed of the outer spherical ball bearing mainly depends on the friction heat generated when the bearing is working. It is closely related to the load condition, ambient temperature, lubrication conditions and life. The good cooperation between the bearing and the shaft is also the guarantee for achieving high speed. .
Under normal circumstances, the outer spherical ball bearings with jack screws and eccentric sleeves adopt clearance fit with the shaft, and the accuracy of the shaft adopts h7 level tolerance: when the load is light and the rotational speed is low, the accuracy of the shaft can use h8 or h9 level tolerance. : When operating at high speed and heavy load, the bearing and shaft adopt a tight fit, and the accuracy of the shaft adopts level 7 tolerance.
The outer spherical ball bearing with an adapter sleeve is matched with the shaft. The accuracy of the shaft adopts h9 level tolerance and ensures IT5/2 cylindricity requirements. It is represented by (h9/IT5) in the table.
The limit speed of 200 series spherical outer ball bearings is equivalent to the limit speed of deep groove ball bearings. The limit speed reference values are shown in Table 19. The limit speed reference values of spherical outer ball bearings under different fits.
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