Slewing Bearing Application

Slewing bearings usually have a diameter ranging from 0.2 to 10 meters. They consist of mounting holes, internal or external ring gears, lubricating oil holes, and sealing devices. The mounting holes are divided into through holes and threaded holes. Different for different industries The slewing bearing has a variety of structural types to meet its requirements, and can meet the needs of the main engine function with different manufacturing accuracy levels. Therefore, the slewing bearing is an indispensable machine on the slewing device of medium and large construction machinery slewing bearing. component. It plays an important role in the machinery industry, construction industry, coal industry and shipbuilding industry. The slewing bearing has toothless type, external tooth type and internal tooth type. The structure types slewing bearing generally include single-volley, double-volley, cross-roller, three-row roller, ball-column combined and other forms, of which single-row ball The slewing bearing has a relatively low cost and excellent overall performance. The double volleyball slewing bearing has certain advantages in service life, strong bearing capacity, small swing resistance, large allowable wear, and strict requirements for the mounting base. Raceway rotation accuracy is low; Crossed roller slewing bearings have high accuracy, long life, and high dynamic load capacity, but have high…

How to Pick the Right SPINDLE BEARING for your Application?

Material Cronidur30ISO Standard: DIN 1.4108Chemical formula: X30CrMoN15-1Advantages: Finer structure, less heat generated, higher permissible contact pressure, much higher fatigue life reliability (10x compared with GCr15 in best case), better corrosion resistance and high temperature resistance Material Ceramic Si3N4Advantages: Excellent tribological properties, lower density to improve the bearing kinematics, lower coefficient of thermal expansion, no magnetism, high current insulation

Bearing in ABEC-7(P4) or ABEC-1(P0) for my application?

Bearing in ABEC-7(P4) or ABEC-1(P0) for my application? ●What does Bearing Precision mean? When dealing with rolling bearings, precision is described by tolerance classes which include dimensional accuracy and running accuracy.it is regulated by ISO or other related standards. Dimensional Accuracy includes (the items related to the installation of shaft and outer shell): 1. Allowable deviation (acceptable values) for bore diameter, outer diameter, width and assembled bearing width 2. Bore diameter uniformity as seen in chamfer dimensions 3. Allowable inner ring tapered bore deviation and shape error 4. Average bore diameter variation 5. Outer diameter variation 6. Average outer diameter unevenness 7. Raceway width and height variation (for thrust bearings) Running Accuracy includes (items related to the runout of the rotator): Acceptable values for inner and outer ring radial runout and axial runout Acceptable values for inner ring side runout, and outer ring outer diameter runout Permissible variation of raceway thickness of thrust bearing Permissible deviation and variation of tapered hole Permissible variation of inclination of the outer ring surface Here I attached the comparison table from different countries: The applicable accuracy levels are different according to different types of bearings. The following table shows different types of bearings and their…