The key technology of silicon carbide bushings

The key technology of silicon carbide liner - 2019 04 - 30 silicon carbide bushing is used for mechanical parts, sealing, in order to achieve another role for the protection of wear and tear, is refers to the ring in one of the gasket set. Below to introduce the key technology of silicon carbide bushings for everybody. 1, set set of cone Angle is close friends certainly gb with delta D1mp - Delta d3mp said, the size of different Duan Yun difference from + 0. 018-0. 09 is required to set set of cone Angle difference can only be big to small, the big end must cooperate with contact, small cone can end a little clearance and cone hole bad cooperation, form a complete set of spherical roller bearings can form single roller bearing, unstable operation, the vibration is big, too big, easy to loose, bearing life is short, high precision set of cone Angle difference should also be set & le; 0. 005 to ensure that contact area of not less than 90%. 2, the cone sleeve outside internal hole of the radial runout ( Is usually referred to as the wall thickness difference of) To high precision, or the axis of rotation in fair amount with the centripetal force, not turbulence, vibration is big, too big, wall thickness difference to '0' is an ideal form. National standard rules of maximum bearing inside diameter size below 65 segment is the group of about half of the maximum clearance bearing specification, and class C maximum clearance very accuracy, so the national standard of qualified level set set of products with the fine heavy load bearing supporting is no good. 3, set set of male cone, the inner hole is better appearance of linearity, is to form a better tolerance, accuracy of cylindricity is better, this national standard is not rule any single section size within the tolerance field is qualified, so is the formation of male cone exterior linearity control is lax, especially male cone plunge-cut grinding mill processing, blank itself bad linearity, wheel dressing, exterior linearity is very poor, common enterprise nor contourgraph inspection, so the product of the project set set of industry in our country there is a big problem, seriously affect the matching accuracy and the stability of form a complete set, as well as poor formation bearing function. 4, set set the thread locking function of form a complete set of bearing is a lock nut rotation axis to move extrusion bearing under the set set of end face and bearing inner hole taper austerity, will reach the purpose of the bearings fixed on the axis of rotation, so the bearing nut and screw thread of adapter bushing is close friends certainly, to fit the common thread of the national standard requirements.