How to determine the axial clearance and expansion clearance of plain bearings?
3. interference fit is the size of the hole when Kong Hezhou is matched, minus the size of the matched shaft, and the algebraic difference is negative. The interference fit is called interference fit. The tolerance of the hole at this time is below the tolerance band of the shaft. In the interference fit, as the size of the shaft is larger than the size of the hole, it is necessary to assemble under pressure or expansion or cold contraction. Interference fit is mainly used to fasten the relative movement between holes and shafts, such as the connection of gear ring and wheel hub of large gear.The 4. transition fit may be a gap or interference fit for the transition fit. At this point, the tolerance zone of the hole overlaps with the tolerance band of the shaft. The transition fit is mainly used for locating the connection between the shafts with good neutrality and coaxiality, and easy to disassemble and assemble, such as the connection between the inner diameter of the rolling bearings and the shaft.
The 2. clearance fit is the fit of the clearance (including the minimum clearance equal to zero) when the hole is in alignment with the shaft, where the tolerance of the hole is above the tolerance band of the shaft. The function of gap is to store oil and compensate various errors, and the magnitude of which affects the relative movement of the hole and axis. The clearance fit is mainly used for the movable connection between the holes and shafts, such as the connection of the sliding bearings and shafts.
Hello, these are the coordination, generally refers to the hole and shaft coordination.1. "fit" refers to the relation of the same size, the combination of holes and the tolerance zone of the shaft. According to the requirements of the use of different, the hole and shaft between the coordination of loose and tight, the national standard provides that there are three categories: gap fit, interference fit and transition coordination.
