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2014-04-30

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2014-04-30

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2014-05-17

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Crane bearing applications
2015-11-18
Crane is in a certain range of vertical lifting and carrying heavy loads of multi-level action lifting machinery. Also known as crane. Belongs to the material handling machinery, but also for marine crane bearing, working characteristics of the crane is to do a batch Appropriate institutional movement, that in a work cycle Reclaimer, transport... Crane is in a certain range of vertical lifting and carrying heavy loads of multi-level action lifting machinery. Also known as crane. Belongs to the material handling machinery, but also for marine crane bearing, working characteristics of the crane is to do a batch Appropriate institutional movement, that in a work cycle Reclaimer, transport, unloading and other movements are alternately work Development and use of cranes on the market more widely. Crane hoisting mechanism includes running mechanism, luffing mechanism, slewing mechanism and metal structure. Hoisting mechanism is the basic working mechanism of the crane, mostly by hanging systems and winches composition, but also lift weights by the hydraulic system. Operational mechanism for horizontal transport of heavy or longitudinal adjustment of the position of the crane work, usually consists of motor, reducer, brake and wheel components. Luffing mechanism is equipped with only the jib crane, when the jib looked amplitude decreases, the amplitude increases when bent, sub balanced and unbalanced luffing luffing two. Boom slewing mechanism for causing rotation is determined by the drive means and the rotary bearing device component. Metal structure is the skeleton of a crane, the main carrier such as bridge, jib and mast can be a box-shaped structure or truss structure,But also for the web structure, and some can be used as a steel support beam. View Details
Cylindrical thrust roller bearings &Tapered roller thrust bearings
2015-10-19
Cylindrical thrust roller bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity and are cheap, but tend to wear due to the differences in radial speed and friction which is higher than with Thrust Ball Bearings.Tapered roller thrust bearings c... Cylindrical thrust roller bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity and are cheap, but tend to wear due to the differences in radial speed and friction which is higher than with Thrust Ball Bearings.Tapered roller thrust bearings consist of small taper roller bearing arranged so that their axes all converge at a point on the axis of the bearing. The length of the roller and the diameter of the wide and the narrow ends and the angle of rollers need to be carefully calculated to provide the correct taper so that each end of the roller rolls smoothly on the bearing face without skidding. These are the type most commonly used in automotive applications (to support the wheels of a motor car for example), where they are used in pairs to accommodate axial thrust in either direction, as well as radial loads. They can support greater thrust loads than the ball type due to the larger contact area, but are more expensive to manufacture. View Details
Precision Bearings overall structure and jarring sound control measures
2015-10-16
Bearing such a strong bearing capacity, low friction torque, often for precision instrumentation framework support bearings.The deep groove ball bearings and angular contact ball used in the instrumentation of the most widely used is the deep groove ball bearings and angular contact ball bearings. Its most notable feature is a compact, low friction... Bearing such a strong bearing capacity, low friction torque, often for precision instrumentation framework support bearings.The deep groove ball bearings and angular contact ball used in the instrumentation of the most widely used is the deep groove ball bearings and angular contact ball bearings. Its most notable feature is a compact, low friction, rotating flexible, and according to need to use in other aspects of the structure and the tolerance level is selected.This kind of crane bearing no inner or outer ring no, compact structure, small radial dimension, while the deviation due to reduced coaxial rings mounted on the shaft or housing generated by the improved precision bearing and bearing parts stiffness, help to improve the tribological properties of the bearing. However, since the parts in contact with the rolling elements requires high precision bearings, and often require special processing methods and detection equipment, the processing cost is increased. Therefore, these bearings are generally used only for high-speed devices requiring high torque and friction parts.Also known as polycyclic bearings. It is generally three to four rings, three balls. Intermediate rings for forced movement, which can be a swing, it can be work-axis continuous rotation opposite. Intermediate swing is called vibration mobile crane bearing rings, called continuous rotation of the rotary bearings. As the middle rings of movement will make the work of the shaft to reduce the friction torque 7/8-9/10. These bearings are asking for is not high speed friction torque minimal occasions.Jarring sound of metal grinding sound harsh skf cylindrical roller bearings are likely to occur in all cases, mostly in the larger models bearing grease lubrication, while in the base oil performance degradation occurs more grease, oil lubrication When hardly occurs. In addition, more prone to winter, when subjected to pure radial load, radial clearance prone to big occasions, and with different types of sizes, at a particular speed range likely to occur, both will occur continuously Intermittent will appear.Foreign raceway take special processing methods to prevent the emergence of sound jarring, the choice of this skf bearing, if necessary or appropriate to reduce the fine radial clearance, the performance of the bearing grease and improve the match skf bearing parts rigidity. View Details
Angular contact ball bearings Axial spherical roller bearings
2015-10-08
Axial spherical roller bearings These bearings are mainly used in hydroelectric power, vertical motors, marine propeller shaft, crane, extrusion machines.Tapered Roller Bearings Thrust Bearing these maindeep groove ball bearing purposes: one way: crane hooks, swivels oil rig bidirectional: rolling mill roll neck.Thrust bearing assembly mainly ... Axial spherical roller bearings These bearings are mainly used in hydroelectric power, vertical motors, marine propeller shaft, crane, extrusion machines.Tapered Roller Bearings Thrust Bearing these maindeep groove ball bearing purposes: one way: crane hooks, swivels oil rig bidirectional: rolling mill roll neck.Thrust bearing assembly mainly axial load, its wide application. Although the thrust bearing installation operation is relatively simple, but the actual repair is still often an error occurs, the tight and loose ring ring bearing mounting location that is incorrect, the results of the bearing out of action, the journal will soon be worn. Retaining ring mounted on the end face of the stationary member, the mounting error. Tight inner ring and the journal for transition fit to drive when the shaft is rotated tight ring, agricultural bearings and the end surface friction with the stationary element, the axial force in the subject (Fx), it will appear larger than the inner diameter of the friction torque with the drag torque, resulting in tight ring and the shaft with face mandatory rotation, aggravated journal wear. View Details
Tapered roller bearing CARB bearing
2015-07-01
Tapered roller bearing type code , tapered roller bearings for the separation of bearings. Under normal circumstances, especially in GB / T307.1-94 "Rolling bearings tolerance" within the cone are involved in a range of sizes tower crane bearing between roller bearing outer ring and the inner component is one hundred percent can be g... Tapered roller bearing type code , tapered roller bearings for the separation of bearings. Under normal circumstances, especially in GB / T307.1-94 "Rolling bearings tolerance" within the cone are involved in a range of sizes tower crane bearing between roller bearing outer ring and the inner component is one hundred percent can be generic interchangeable. The angle of the outer ring and the outer raceway diameter has been standardized with the same dimensions provides. When allowed to change in design and manufacturing. Between tapered roller bearings to cause the outer ring and the inner components are interchangeable generic worldwide. Tapered roller bearings are mainly used to bear radial load mainly radial and axial joint load. Compared with angular contact ball bearings, bearing Excavator Slewing Bearing capacity, low speed limits. Tapered roller bearings can withstand axial load in one direction, a direction to limit the axial displacement of the shaft or housing. View Details
Job requirements CARB bearing
2015-06-12
For harsh heavy loads, working conditions or special requirements for sealed bearings configuration, you can use the built-in contact-type seals Spherical roller bearings. The bearing dimensions are identical and non-sealed bearings, in many cases can replace the non-sealed bearings. Allow aligning angle of 0.5 °, an operating temperature of -20 ... For harsh heavy loads, working conditions or special requirements for sealed bearings configuration, you can use the built-in contact-type seals Spherical roller bearings. The bearing dimensions are identical and non-sealed bearings, in many cases can replace the non-sealed bearings. Allow aligning angle of 0.5 °, an operating temperature of -20 ℃ ~ 110 ℃. Inner CARB bearing has filled the right amount of lithium-based grease rust, Spherical roller bearings grease can be added according to user requirements. Depending on whether the wall and the inner ring with cage, can be divided into C-type and CA-type two basic types, C-type bearings are characterized by inner wall and the use of steel stamping cage, CA-bearing characteristics compared to both sides of the inner wall and the use of the car solid cage. These bearings are especially suitable for heavy work load or vibration loads. Spherical roller bearings have two raceways in the inner and raceways between spherical outer ring, equipped with a drum-shaped roller bearings [2]. The outer ring raceway high speed bearing curvature center and bearing center line, so has the same self-aligning ball bearing self-aligning feature. When the shaft, shell deflection occurs, you can automatically adjust load and axial load in two directions. Radial load capacity, for a heavy load, impact load conditions. Inner diameter is tapered bore bearings can be installed directly. Or use an adapter sleeve, remove tube installed in the cylinder axis. Cage with steel stamping cage, forming polyamide cage and copper alloy machined cage. View Details