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Progressive INA outer spherical bearing work accuracy related information "functional inventory"
Source: Bearing network time: 2012-12-28
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1. The conflict compliance data relies on the elastoplastic deformation of the surface layer to compensate for the initial cooperation failure and the deflection function of the axis of the sliding conflict. The data with low elastic modulus is better.
2. The running-in property is in the running-in process of the shaft diameter and the bearing bush; the shaft diameter and the bearing bushing error, the coaxiality error, and the appearance roughness parameter value are reduced; the touch is uniform; then the ability of the conflicting force and the wear rate is lowered.
3. Wear resistance is the ability of the auxiliary data to resist wear. Under regular wear conditions; wear rate or wear degree, the reciprocal of wear amount to indicate wear resistance.
4. The clamped data allows the external hard particles to be clamped in the smoothing agent to avoid scratching or (and) wear of the abrasive particles. For metal data; low hardness and low modulus of elasticity; clampability is good; Non-metallic materials are not necessarily fixed; for example, carbon graphite; low modulus of elasticity; but the clamping is not good. The outer spherical bearing generally uses a softer data and harder data to form a conflicting width; generally use softer materials as the bearing.
5. Anti-weariness The ability of data to resist fatigue damage under cyclic loading. At the operating temperature; the strength, hardness, impact strength and arrangement uniformity of the bearing material are very important for the fatigue. The wear-in and clamping data are good. Generally, the fatigue resistance is poor. After the spindle is assembled, it is necessary to check the working precision of the outer spherical bearing. The most common method is to view the INA bearing spindle of the machine tool. Measure the radial and axial runout on the proper appearance of the shaft head. Now the ellipticity and degree of deviation measured on the outer surface of the spindle are generally large; it is difficult to obtain the actual degree of partiality of the rolling bearing or spindle rotation.
6. Collision compatibility shaft diameter and bearing bushes are straight to touch and avoid the seizure. The function of constituting the gap is smooth. The data elements that affect the compatibility of conflict and sub-collision are:
1) Affinity of materials and smoothing agents.
2) The conflict factor of the pair of data in the absence of smooth state.
3) The size of the data surface and the characteristics of the oxide film.
4) The degree of difficulty in forming alloys by metallurgical materials.
5) Microscopic arrangement of data.
6) Thermal conductivity of the data.
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