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1 As it need to achieve the requirement for high-precision bearing and high temperature bearings, so the following two points should be taking into account while choose the clearance for high speed bearings. (1) The dimensional change and hardness change while the temperature is rising from normal to high (2) Centrifugal force system changes and shape change while in high speed In short, high-speed, high temperature conditions, from the choice of co-ordination and clearance to maintain the accuracy and performance for bearing, it is difficult. After mounted, In order to ensure the bearing raceway deformation is small, the interference fit amount of interference cannot be too large, high speed centrifugal force and high thermal expansion, or offset the surface normal pressure, or relax the surface, the amount of interference must be carefully calculated under the premise of considering these two factors, the amount of interference for high-speed bearings may be ineffective at normal temperature, normal constant speed. If the calculated contradiction is too large (usually only in hypervelocity occur), it is only to take double ring under lubrication and hydrostatic lubrication and lubrication measures, this solution might be to make the bearing dmn value breakthrough 3 million mark. Considering high-speed bearing clearance not only to consider the above factors, but also to consider for the elongation of shaft, that have the best clearance, which kinds of clearance inner and outer race ball groove accurate center formed on the state of the bit. High-speed bearings for lower relative sliding and internal friction, it is best not to use the inner, outer ring relative axial dislocation method to adjust the ball bearing clearance. Consider the bearing with the amount of interference and clearance to note that materials at high temperatures become soft and easy deformation characteristics, as well as the possibility of certain permanent deformation. After several high temperature from room temperature to the temperature changes 2. The request to host related part High-speed bearings require bearing rotation system where precision balancing housing bore axis and install the bearing parts should be higher than the general requirements of dimensional accuracy and geometric accuracy, concentricity and shoulder seat hole or journal verticality, and in considering these questions, the same must be noted that the high-speed factor and high temperature factors in the operation of the bearing. The shaft support systems require both high rigidity, and quality requirements as light as possible, to overcome this contradiction, such as the reduction of surface roughness and surface hardening measures can be taken to improve the bearing stiffness and hollow shaft to reduce the quality of the system. FAG HCS71916C.T.P4S.UL| FAG HCS71913E.T.P4S.UL | FAG HCS71914C.T.P4S.UL | FAG HCS71912E.T.P4S.UL | FAG HCS71911E.T.P4S.UL | FAG HCS7010C.T.P4S.UL | FAG HCS71906E.T.P4S.UL | FAG HCS7008C.T.P4S.UL | FAG HCS71906C.T.P4S.UL | FAG HCS71905E.T.P4S.UL |
