Design and Safety Guidelines for FAG Thrust Ball Bearings

FAG Thrust Ball Bearing Design and Safety Guidelines Thrust ball bearings can only withstand axial loads. For a complete bearing arrangement calculation, the Engineering Services Department of Qingdao Ruijing Electromechanical Equipment Co., Ltd. should be consulted. Equivalent dynamic load of bearing For bearings under dynamic load, the following formula is used: P kN equivalent dynamic load of bearing Fa kN axial dynamic load of bearing. Bearing equivalent static load For the bearing bearing static load, the following formula is used: P0 kN bearing equivalent static load F0a kN bearing axial static load. At high speeds with minimum axial load, detrimental slippage between the rolling elements and the raceway occurs due to centrifugal force and gyroscopic moment. In order to avoid slippage, the SLF bearing must be subjected to a minimum load Fa min. The minimum load factor A is given in the dimension table. For nmax, the maximum operating speed must be used. Fa min kN minimum axial load A minimum load factor, see dimension table nmax min1 maximum operating speed. Speed u200bu200bISO 15312 does not give thermal reference speeds for thrust ball bearings. Limit speeds for oil lubrication are given in the dimension table. Bearing Arrangement Design In order to take full advantage of the bearing's performance, the adjacent structure must have a suitable design. Shaft and housing tolerances For single-direction thrust bearings, the shaft tolerance should be j6. The positioning hole tolerance depends on the required running accuracy. For ordinary running accuracy, tolerance zone E8 should be selected; for high running accuracy, tolerance zone H6 should be selected. User-customized solutions can be implemented through protocols. The shoulder of the adjacent structure of the adjacent components must be high enough to effectively support more than half of the height of the shaft washer and seat washer of the KBC bearing. The purpose of this is to achieve the centering of the main shaft and the bearing seat. Adjacent shoulders must be rigid, flat, and perpendicular to the axis of rotation. For the maximum radius ra and the diameter of the mating surface da, Da, see dimension table. Accuracy Dimensions and Geometric Tolerances Main dimensions of one-way thrust bearings conform to ISO 104 or DIN 711, see dimension table.