Small clearance bearings typically refer to precision bearings with small radial clearance, suitable for high-speed, low-noise, or high-precision applications Clearance types: original clearance, mating clearance, and working clearance. After assembly, the clearance may change due to interference or thermal expansion. Pre-tightening adjustment: Angular contact ball bearings and similar components can adjust their radial clearance through axial clearance to enhance rotational accuracy
