2013年8月15日星期四
Bearing torque, load and life
1 starting torque startingtorque make a bearing ring or gasket ring relative to another fixed or washers torque required to start rotating. (2) When a rotational torque runningtorque rotating bearing ring or gasket to prevent movement of another ring or gasket torque required. 3 radialload radial load acting on the bearing axis line direction perpendicular to the load. 4 axialload axial load acting on the bearing axis line parallel to the direction of the load. 5 staticload static load bearing ring or gasket when the relative rotational speed of zero (or thrust bearing to the heart) or when the rolling element in the rolling direction when no motion (linear bearings), the load acting on the bearing. 6 dynamicload dynamic load bearing ring or gasket when the relative rotation (to the heart or thrust bearings) or when the rolling element in the rolling direction of movement (linear bearings), the load acting on the bearing. 7 Theory of Computation load equivalent load equivalentload General terms used in specific situations, bearing under load in this theory as to withstand the actual load. 8 radial (axial) Basic Static Load basicstaticradial (axial) loadrating rolling elements and raceways with a total permanent deformation corresponding radial static load (central axial static load). If at zero load, roller and raceway (roller bearing) is assumed to be normal or bus (line contacts) when the maximum contact stress, the rolling element and raceway contact produces a total permanent deformation of the rolling element 0.0001 times the diameter.
For single row angular contact bearings, radial load rating of the bearing rings relative to each other due to pure radial displacement of the radial component of the load. 9 radial (axial) Basic dynamic load basicdynamicradial (axial) loadrating constant radial load (constant axial load center), the load, the bearing can theoretically withstand a million revolutions of the basic rating life. For single row angular contact bearings, radial load rating of the bearing rings relative to each other due to pure radial displacement of the load weight. 10 Life (refers to a set of bearings) life bearing a ring or a gasket or a rolling fatigue propagation material first appeared before a ring or a gasket relative to another ring or a gasket revolutions. Life can also be used at a given constant speed expressed as the number of operating hours. 11 Reliability (refer to bearing life) reliability operating under the same conditions a group of nearly identical rolling expected to meet or exceed a specified percentage of the life of the bearing. A bearing reliability meet or exceed the requirements for this bearing lifetime probability. 12 rated life ratinglife radial or axial basic dynamic load rating Basic dynamic load rating based life prediction values. 13 basic rating life basicratinglife reliability associated with 90% of the rated life. 14 life factor lifefactor order to obtain the corresponding given nominal life of the basic dynamic load rating Radial or axial basic dynamic load rating for equivalent dynamic load correction factor. 15 Bearings plummerblock radial bearings and seat combination with a component, in line with the bearing axis parallel to the support surface for the mounting screws on the bottom plate. 16 vertical seat plummerblockhousing mounted rolling bearing pedestal. 17 flangedhousing a radial flange flange seat and in line with the bearing axis perpendicular to the bearing surface for its mounting on the screw holes as a seat. 18 tight sets with cylindrical bore adaptersleeve axial opening sleeve, the outer surface and the small end of the conical external thread. Used to have a tapered bore bearing mounting (with lock nut and lock washer) in a cylindrical outer surface of the shaft. 19 Withdrawal sleeves withdrawalsleeve axial opening having a cylindrical bore of the sleeve, the outer surface of the conical external thread and big endian.
A tapered bore for the bearing axis of the cylindrical outer surface of the installation or removal (with a nut). 20. Locknut locknut having a cylindrical outer surface and the axial grooves female screw with lock washer and an annular outer claw wrench to tighten the nut. Axial positioning for a rolling bearing. 21 lock washer lockwasher many thin steel outer claw washer. An outer claw for locking nut, an inner claw into the adapter sleeve or shaft axial slot. 22 eccentriclockingcollar eccentric eccentric bore at one end of the groove relative wheel, mounted on the outer spherical bearing inner ring elongation equal eccentric side. Eccentric relative to the rotating inner ring fastened to the inner ring, and then tighten jacking wire so fastened on the shaft. 23 mounted on the outer concentric spherical bearing sleeve concentriclockingcollar wide inner ring on the wheel, there is the top wire screwed into the hole in the inner ring and the contact with the shaft.
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