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load distribution in a four contact-point slewing bearing

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  • Load distribution in a four contact-point slewing

    2003-6-1 · The load carried by each ball bearing in the direction of the contact is (2) Q= F (K,δ z,δ r,θ,A,α 0,ψ) where K is the rigidity of the ball bearing/raceway contact, α 0 is the initial contact angle between raceways and ψ is the angle that determines the ball bearing’s position inside the bearing ().. The relation between the deformation of each ball bearing and the force which ...

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  • Load distribution in a four contact-point slewing

    The load distribution of a four-point contact slewing bearing under the conditions of axial and radial load was investigated on the basis of classical Hertz theory by J.I. Amasorrain [8]. The ...

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  • Load distribution in a four contact-point slewing

    This article discusses a calculation procedure for determining the load distributions in the rolling elements of a four contact-point slewing bearing with one row of ball bearings, under general load conditions (moment, axial load and radial load).

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  • load distribution in a four point contact slewing

    2018-7-20 · load distribution in a four point contact slewing bearing. 2018-07-20 . The single row four point contact ball slewing bearing is composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four point, it can bear the axial force, radial force and the tilting moment at the same ...

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  • load distribution in a four point contact slewing

    2018-7-20 · The single row four point contact ball slewing bearing is composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four point, it can bear the axial force, radial force and the tilting moment at the same time.. The bearing capacity curve of 4-point contact slewing bearing. Each type of slewing bearing of product samples has ...

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  • Load Distribution Calculation of a four-Point-Contact ...

    2018-1-25 · Analysis of the load distribution along raceways is fundamental for assessing dynamic and static capacity of the slewing bearings. In the literature, several finite element (FE) models have been proposed to estimate the load distribution and the deformation of slewing bearing. Although FE simulations are a useful tool for designers, there are a few experimental studies assessing accuracy …

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  • Load Distribution Calculation of a four-Point-Contact ...

    Load Distribution Calculation of a four-Point-Contact Slewing Bearing and its Experimental Verification. ... which also allowed to define the internal load distribution in the bearing. On example ...

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  • Design of Four Contact-Point Slewing Bearing With a

    2010-1-26 · This paper proposes a procedure for obtaining the load distribution in a four contact-point slewing bearing considering the effect of the structure’s elasticity. The uneven stiffness of the rings and the supporting structures creates a variation with respect to the results obtained with a rigid model.

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  • General static load capacity in four contact point slewing ...

    2014-5-20 · Figure 1: Loads acting on a slewing bearing. Figure 2: Moment–axial-force diagram for a four-contact-point slewing bearing. There have been some previous publications where concepts relevant to the assessment of the static load-carrying capacity of four-contact-point slewing bearings have been examined [1-5]. All of the above papers propose a

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  • Bearing internal load distribution and displacement

    2017-9-7 · 5. Bearing internal load distribution and displacement 5.1 Bearing internal load distribution This section will begin by examing the effect of a radial load F r and an axial load F a applied on a single-row bearing with a contact angle a (angular contact ball bearings, tapered roller bearings, etc.). The ratio of F a to F r determines

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  • General static load‐carrying capacity of four‐contact ...

    2012-7-11 · In a previous work, 3 the authors derived a theoretical method to arrange the general static load capacity of four‐contact‐point slewing bearings. In contrast with other works 4 - 6 based on the direct approach introduced by Jones, 7 this method was based on the inverse approach developed by Sjoväll 8 (for combinations of axial and radial ...

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  • General static load‐carrying capacity of four‐contact ...

    2013-7-1 · ABSTRACTFour‐contact‐point slewing bearings are widely used in wind turbine generators (WTGs) to adjust the orientation of the blades and the nacelle to fully exploit wind resources. These bearings must withstand static and fatigue loads; however, at the first stages of the design process, the bearings are commonly selected by considering only static loads. This paper presents a further ...

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  • DEVELOPMENT OF LOAD DISTRIBUTION MODEL AND

    2018-6-19 · tional ball bearings. Once the geometry and internal kinematics of four-point contact ball bearing are examined and formulated, a comprehensive mathematical model is established to define the load distribution characteristics of four-point contact ball bearings by implementing existing models in literature. The contact between each

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  • Optimization design of structural parameters of single

    2020-5-12 · The single-row four-point contact ball slewing bearing has a large structure and is subjected to heavy load, which requires extremely high carrying capacity. The structural parameters of the ball diameter and the number of balls are optimized with the fixed size of the inner and outer rings of the slewing bearing. Numerical methods based on static bearing capacity and fatigue life are used to ...

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  • Distribution of loads in the large size bearing –

    Original scientific paper Large diameter slewing bearings used in open cast machines are made of unhardened raceways. As a consequence the major wear is caused by the plastic deformations. Loads acting on the rolling elements of the bearing depend on the load transferred through the bearing itself and on the superstructure and undercarriage components stiffness.

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  • Four-Point Contact Ball Bearing Model With

    2013-5-2 · In many applications, such as four-point contact slewing bearings or main shaft angular contact ball bearings, the rings and housings are so thin that the assumption of rigid rings does not hold anymore. In this paper, several methods are proposed to account for the flexibility of rings in a quasi-static ball bearing numerical model.

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  • ©Kaydon Bearings Slewing Ring Bearings Section 3 ...

    2019-6-6 · four-point ball bearing. Reduction of the d d and d ... The face of the structure that supports the bearing must make contact with the complete mounting face of the bearing's ring and have surface finish 250 AA or better. Obtaining a uniform distribution of the load to the bearing is difficult when using a frame, welded structure,

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  • Calculation Method of Dynamic Load Bearing Curve of

    2019-7-1 · double -row four point contact ball bearing on the basis of static analysis, introduce the drawing method of dynamic load curve, and give the calculation and application case. II. EXACT SOLUTION OF CONTACT FORCE double -row four point contact ball bearing is shown in Figure 1: Fig.1 Stucture of double-row four-point contact ball bearing

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  • Slewing Bearing Factory - China Slewing Bearing ...

    2021-5-21 · Single row four point contact ball slewing bearing is widely used in truck crane. It can handle the loading and unloading of goods in a more comprehensive manner. Compared with other steering equipment, the advantage of slewing bearing is the key to solve inaccurately place and load and unload of …

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  • Bearing load scenarios; angular contact, radial contact ...

    customer service: Kaydon bearing load scenarios. Types of Reali-Slim® bearings Kaydon Reali-Slim® bearings are available in three basic configurations to handle radial loads, axial loads and moment loads: angular contact (type A), radial contact (type C), and four-point contact (type X).By using these three types, the customer has a wider choice of mounting arrangements to meet load ...

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  • 10.1016/S0094-114X(03)00003-X | DeepDyve

    2020-6-11 · 1 Introduction A slewing bearing is basically a large-sized bearing which may also have gear teeth to receive the energy of a motor, in accordance with the desired application. The field of application of this kind of bearing is very varied, from tower cranes to wind-power generators, excavation machinery and capital goods machinery.

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  • General static load‐carrying capacity of four‐contact ...

    2013-7-1 · ABSTRACTFour‐contact‐point slewing bearings are widely used in wind turbine generators (WTGs) to adjust the orientation of the blades and the nacelle to fully exploit wind resources. These bearings must withstand static and fatigue loads; however, at the first stages of the design process, the bearings are commonly selected by considering only static loads. This paper presents a further ...

    Get Price
  • DEVELOPMENT OF LOAD DISTRIBUTION MODEL AND

    2018-6-19 · tional ball bearings. Once the geometry and internal kinematics of four-point contact ball bearing are examined and formulated, a comprehensive mathematical model is established to define the load distribution characteristics of four-point contact ball bearings by implementing existing models in literature. The contact between each

    Get Price
  • ©Kaydon Bearings Slewing Ring Bearings Section 3 ...

    2019-6-6 · four-point ball bearing. Reduction of the d d and d ... The face of the structure that supports the bearing must make contact with the complete mounting face of the bearing's ring and have surface finish 250 AA or better. Obtaining a uniform distribution of the load to the bearing is difficult when using a frame, welded structure,

    Get Price
  • Contact Stress Analysis on a Large-Sized Four Contact ...

    The analysis method on contact stresses between balls and inner/outer ring raceways of a large-sized four contact-point slewing bearing with negative axial play was present. The contact stresses and contact areas between balls and inner/outer ring raceways of a slewing bearing were computed at different negative axial plays without applied load.

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  • Running Torque of Slow Speed Two-Point and Four

    A decoupled slow speed friction torque model has been developed to predict the running torque of a double-arched angular contact bearing when operating as a four-point, as well as a two-point contact bearing. The load distribution model from Amasorrain et al. (2003) and the kinematics model developed by Leblanc and Nelias (2007) have been combined after ignoring centrifugal and gyroscopic ...

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  • Bearing load scenarios; angular contact, radial contact ...

    customer service: Kaydon bearing load scenarios. Types of Reali-Slim® bearings Kaydon Reali-Slim® bearings are available in three basic configurations to handle radial loads, axial loads and moment loads: angular contact (type A), radial contact (type C), and four-point contact (type X).By using these three types, the customer has a wider choice of mounting arrangements to meet load ...

    Get Price
  • The design analysis of the slewing bearings for

    2019-6-7 · The slewing bearings have to satisfy the functionality needs of the robot host for slewing bearing load rating, stiffness, precision, friction torque,etc. Standard slewing bearings are hard to meet those requirements, whereas light-weight slewing bearings can solve this problem easily. ... Light-weight four point contact ball slewing bearings ...

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  • A new computational model of large three-row roller ...

    In order to improve the computational efficiency of load distribution of large three-row roller slewing bearing, a new computational model using nonlinear springs is presented in this paper. In this model, each roller is simulated by a group of nonlinear springs, which has the same load-deformation performance with solid roller–raceway contacts.

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  • DEVELOPMENT OF LOAD DISTRIBUTION MODEL AND

    2018-6-19 · tional ball bearings. Once the geometry and internal kinematics of four-point contact ball bearing are examined and formulated, a comprehensive mathematical model is established to define the load distribution characteristics of four-point contact ball bearings by implementing existing models in literature. The contact between each

    Get Price
  • Mathematical Modelling of Load and Stress

    2019-4-4 · [2] Amasorrain J I, Sagartzazu X, Damián J. Load Distri-bution in a Four Contact - point Slewing Bearing [J]. Mechanism and Machine Theory, 2003, 38: 479 - 496. [3] Zupan S, Prebil I. Carrying Angle and Carrying Capacity of a Large Single Row Ball Bearing as a Function of Geometry Parameters of the Rolling Contact and Supporting Structure Stiffness [J].

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  • ©Kaydon Bearings Slewing Ring Bearings Section 3 ...

    Load distribution between balls is unequal. Degree of load distribution inequality depends on internal geometry of bearing (number of balls, internal ... 2 3 Journal of the Brazilian Society of Mechanical Sciences and Engineering Influence of groove shape on clearance in four-point-contact slewing bearing.

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  • 3D Simplified Finite Elements Analysis of Load and

    2019-6-6 · four-point ball bearing. Reduction of the d d and d ... The face of the structure that supports the bearing must make contact with the complete mounting face of the bearing's ring and have surface finish 250 AA or better. Obtaining a uniform distribution of the load to the bearing is difficult when using a frame, welded structure,

    Get Price
  • Theoretical analysis of cylindrical roller bearing with ...

    关DOI: 10.1115/1.2918915兴 Keywords: slewing bearing, Hertz theory, load distribution, contact angle, nonlinear spring Introduction mechanical environment is necessary to establish the load distri- bution and contact angles along the raceways and, thus, the most Slewing bearings, which are used as linkage devices in large critical sector.

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  • Design and Development of Ball Bearing for Inclined Loads

    with respect to the roller bearing’s radial load. Considering the uneven stiffness of the rings, Olave et al. (2010) proposed a procedure to obtain the load distribution in a four contact point slewing bearing, which result has a very good correlation with that obtained in ABAQUS.

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  • Efficient Finite Element modelling of crossed roller

    2012-3-15 · Amasorrain JI, Sagartzazu X, Damián J. Load distribution in a four contact-point slewing bearing. Mechanism and Machine Theory. 2003. 38:479-496. [7] Kania L. Modelling of rollers in calculation of slewing bearing with the use of finite elements.

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  • Alberto Serna - Academia.edu

    Design of Four Contact-Point Slewing Bearing With a New Load Distribution Procedure to Account for Structural Stiffness more by Alberto Serna This paper proposes a procedure for obtaining the load distribution in a four contact-point slewing bearing considering the effect of …

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  • Advances in Mechanical Engineering 2016, Vol. 8(2) 1–10 ...

    2019-10-30 · ment, slewing bearing is widely studied by many scho-lars. Amasorrain et al.3 analyzed the difference between the two and four contact-point slewing bearing and gave the load distribution of a four contact-point slew-ing bearing and then got maximum load of the rolling elements. Kania4 applied the finite element method to

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  • Slewing Bearings - RCB BEARING-Make Your Industry

    2020-2-28 · The contact is modeled by two classes of springs between the centers of curvature, Spring A and Spring B, since the bearing is a four-contact-point slewing bearing. Under pure axial loading FA of 120 kN, Fig. 5 shows a uniform contact load distribution between the rolling elements.

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  • A new computational model of large three-row roller ...

    The common used structures of slewing bearing are four-point contact ball slewing bearing, double-row ball slewing bearing, three-row roller slewing bearing and crossed roller slewing bearing, and according to the distribution of gear, slewing bearing mentioned above also could be divided into without gear, with internal gear and with external ...

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  • Xabier Sagartzazu | IKERLAN Technological Research

    2017-4-21 · In order to improve the computational efficiency of load distribution of large three-row roller slewing bearing, a new computational model using nonlinear springs is presented in this paper. In this model, each roller is simulated by a group of nonlinear springs, which has the same load-deformation performance with solid roller–raceway contacts.

    Get Price
  • Maintenance & Protection - Swing bearing

    Large slewing bearings use different bearing types: one or two rows of four-point bearings and three sets of roller bearings. The software can analyze the configuration of one or two rows of four-point bearings. The important results are contact stress, friction moment and shear stress under the surface to determine the necessary hardness depth.

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