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China, Chinese Four Point Contact Ball Slewing Bearing Four Point Contact Ball Bearing Vu451117 Vu201125 Vu401213 Vu201220 Vu201244 Vu601250 Vu361350 Vu601390 Vu5014721 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Cylindrical Roller BearingSlewing BearingFour Point Contact Ball Bearing
Luoyang Auto Bearing Co., Ltd.
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Product Description Application of Four-Point Contact Ball Slewing BearingsFour-point contact ball slewing bearings are a special type of slewing bearing where the rolling elements (steel balls) make four-point contact with both the inner and outer raceways. They can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments, featuring core advantages such as compact structure, strong load-carrying capacity, and high space utilization. These bearings are widely used in fields with specific requirements for complex load conditions and limited installation space. The following explanation covers their core application scenarios, typical industry cases, and application advantages.I. Core Application Scenarios: Focus on "Compound Load + Compact Space" RequirementsThe application of four-point contact ball slewing bearings essentially aligns with working conditions that "require simultaneous resistance to multi-directional loads while demanding lightweight or miniaturized equipment structures". They are mainly concentrated in the following types of scenarios:1. Rotating Worktables/TurntablesSuch equipment needs to drive heavy objects (e.g., tooling, workpieces, molds) for 360° continuous rotation or intermittent positioning, while withstanding the radial weight of the workpiece, axial positioning force, and overturning moment during rotation. Typical Cases: Rotating worktables for CNC machine tools, turntables for vertical lathes, flipping platforms in automated production lines, and slewing bases for welding robots.Demand Matching: There is no need to additionally match thrust bearings or radial bearings; a single bearing assembly can meet the compound load requirements. This greatly simplifies the structural design of the worktable and reduces the overall weight of the equipment.2. Lifting and Material Handling EquipmentThe rotating components of the equipment (e.g., boom, slewing tower body) need to withstand the radial tension and axial pressure from heavy objects, while resisting the overturning moment caused by the eccentricity of the heavy load. Moreover, extremely high requirements are placed on the reliability and service life of the bearings. Typical Cases: Connection between the slewing tower body and base of tower cranes, slewing joints of the boom of truck cranes, rotating mechanisms of port portal cranes, and slewing bearings for forklift steering.Demand Matching: The anti-overturning capacity of the four-point contact structure is significantly superior to that of deep groove ball bearings or self-aligning bearings. It can maintain stability under dynamic loads during lifting operations and avoid bearing failure caused by moment overload.3. Construction Machinery and Engineering MachineryEngineering machinery mostly operates under complex outdoor conditions (e.g., vibration, impact, dust). Its rotating components (e.g., bucket, slewing platform) need to withstand severe compound loads and adapt to harsh environments. Typical Cases: Connection between the upper body and lower crawler chassis of excavators, slewing bucket joints of loaders, steering mechanisms of road rollers, and cutter head drive supports for small shield tunneling machines.Demand Matching: These bearings usually adopt a sealing structure (e.g., double-lip seals) to prevent sand and mud from entering. Meanwhile, the load-carrying characteristics of the four-point contact structure can cope with instantaneous impact loads during excavation operations, extending the equipment's overhaul cycle.4. Wind Power and New Energy EquipmentThe nacelle of wind power equipment needs to rotate around the tower (yaw system) to track the wind direction, and the hub needs to drive the blades to rotate (pitch system). Both need to withstand radial forces, axial forces, and overturning moments caused by wind loads. Additionally, strict requirements are imposed on the low friction and long service life of the bearings (usually requiring maintenance-free operation for more than 20 years). Typical Cases: Wind power yaw bearings (connection between nacelle and tower), wind power pitch bearings (connection between hub and blades), and slewing supports for photovoltaic tracking systems (driving solar panels to track the sun).Demand Matching: The contact stress of four-point contact bearings is evenly distributed, and the friction coefficient is low, which can reduce energy loss during yaw/pitch processes. At the same time, through special materials (e.g., carburized bearing steel) and heat treatment processes, the long-life requirements of wind power equipment are met.5. Medical and Precision EquipmentMedical equipment has extremely high requirements for precision, stability, and low noise. It needs to achieve high-precision rotation in a compact space while withstanding the radial/axial loads of the equipment itself. Typical Cases: Scanning turrets of CT machines, rotating mechanisms of patient platforms in magnetic resonance imaging (MRI) equipment, and rotating bases of dental treatment chairs.Demand Matching: These bearings are manufactured with high-precision processing (e.g., P5/P4 accuracy grades) to ensure minimal runout during rotation, avoiding impacts on the imaging accuracy or operational stability of medical equipment. Meanwhile, by optimizing the surface roughness of the raceways, operating noise is reduced.II. Application Advantages: Why Choose Four-Point Contact Ball Slewing Bearings?Compared with traditional solutions such as "deep groove ball bearing + thrust bearing combination" and double-row angular contact ball bearings, the core advantages of four-point contact ball slewing bearings are reflected in the following 4 aspects: Advantage DimensionSpecific DescriptionHigh Load-Carrying EfficiencyA single assembly can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments, eliminating the need for multi-bearing combinations and reducing the number of components.Compact StructureThe inner and outer rings adopt an integral design (some are split-type), and the radial dimension is much smaller than that of "multi-bearing combinations", saving equipment installation space.Stable OperationThe stress distribution of four-point contact is more uniform, and the contact area between rolling elements and raceways is moderate, which can reduce local stress concentration and improve impact resistance.Low Maintenance CostThe integrated structure reduces the difficulty of bearing installation and alignment (traditional combined bearings require coaxiality guarantee, otherwise failure is prone to occur). Additionally, the sealing design is more complete, extending the maintenance-free cycle.III. Application PrecautionsLoad Matching: Select the appropriate bearing model based on actual working conditions (specific values of radial force, axial force, and moment) to avoid raceway wear or steel ball fracture caused by overloading.Installation Precision: Ensure the coaxiality of the inner and outer rings during installation. Excessive deviation will aggravate uneven wear of the raceways and shorten the service life.Lubrication and Sealing: Choose suitable grease according to the working conditions (e.g., synthetic grease for high-temperature conditions, extreme pressure grease for dusty conditions), and regularly check the status of seals to prevent the intrusion of impurities. In summary, the core application of four-point contact ball slewing bearings lies in "solving complex compound load problems with a compact structure". Their application scenarios range from precision medical equipment to heavy-duty engineering machinery, making them one of the key components for achieving "lightweight and high reliability" in modern equipment manufacturing. Packaging & DeliveryStandard Packaging: Sealed plastic bags with moisture absorbents inside industrial cardboard boxesExport Packaging: IPPC-certified wooden crates with foam insulation for sea/air transportLead Time: 10-15 working days for standard models; 30-45 days for custom specificationsShipping Options: FOB Shanghai/Ningbo, CIF, or DDP via sea, air, or express courier (DHL/FedEx/UPS)Customization ServicesWe offer tailored solutions to meet specific application requirements:Stainless steel construction (440C) for corrosion-resistant applicationsSpecial coatings (Chrome, DLC) for enhanced wear resistanceNon-standard dimensions and mounting configurationsHigh-temperature designs for operations up to 200°CIntegrated gear teeth for direct drive applications CompanyLuoyang Auto Bearing Co., Ltd. is located in the industrial park of Luoyang,which is one of the four great ancient capitals of China.Our company is the member of China Bearing Industry Association,cooperating with State Quality Supervision and Testing Center for bearing.Our company is a professional bearing manufacturer which integrated with research ,development and marketing services.Our major products include deep groove ball bearing, spherical roller bearing, slewing ring, crossed roller bearing and other all kinds of high precision bearings.Our products are widely applied to motor industry,mining metallurgy,wind power generation,petroleum drilling,automobile and motorcycle etc..Our company not only possesses advanced bearing manufacturing equipments and international first-class measuring instruments, but also has strong strength of manufacturing, inspecting and testing the high precision and reliability bearings.Each process is in strict accordance with the ISO9001 quality management system,which effectively guarantees the precise of products and stability of the performance. AUTO bearings are mainly exported to the United states,South Korea,Europe,etc., which have reached the high level of foreign similar products.The soul of our business culture is [Detail makes competitive, innovation makes first-class".We believe the production and management philosophy of [quality wins ,casting competitive products".The company adheres to the zero-defect quality management for meeting customer requirements.PackingA. plastic box & outer carton & palletsB. plastic bag & box & carton & palletC. tube package & middle box & carton & palletD. Depends on your needsDeliveryA. Most orders will be shipped within 3-5 days of payment being received.B. Samples will be shipped by cov2urier as FedEx,UPS,DHL,etc.Thank you very much for taking time to view our company's website. If you are interested in this product, please feel free to contact us. We are always here.
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