The ultra-high speed spindle usually adopts stepped shaft sleeve, and the traditional locking device can not provide enough accuracy.
Extended data
1, according to the shape of the shaft: optical axis, stepped axis, real axis and hollow axis.
Stepped shafts-shafts with different outer diameters and shoulders.
Shaft wear is the most common equipment problem in shaft use. There are many reasons for shaft wear, but the main reason is determined by the characteristics of the metal used to manufacture the shaft. Although metal has high hardness, it has poor yielding (it cannot be recovered after deformation), poor impact resistance and poor fatigue resistance, which easily leads to adhesive wear, abrasive wear, fatigue wear and fretting wear, and most shaft wear is not easy to detect.
2. Other methods of bearing axial positioning
(1) Positioning method of lock nut:
When installing the bearing inner ring with interference fit, one side of the inner ring usually leans against the shoulder of the shaft, and the other side is usually fixed with a lock nut (KMT or KMTA series). Bearings with tapered holes are installed directly on the tapered journal and usually fixed on the shaft with lock nuts.
(2) gasket positioning method:
It is very convenient to use spacers or gaskets between bearing rings or between bearing rings and adjacent parts instead of the whole shaft shoulder or bearing seat shoulder. In these cases, dimensional and shape tolerances also apply to the relevant parts.
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