NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
What is slewing bearing?
Slewing bearings are mechanical parts that can simultaneously bear large axial loads, radial loads, overturning moments and other comprehensive loads, and achieve relative rotary motion.Our company provides single-row four-point contact ball slewing bearings, double-row different-diameter ball slewing bearings, single-row crossed roller slewing bearings, double-row roller slewing bearings and three-row roller slewing bearings.
The double row slewing bearing can efficiently bear axial,radial and tilting moment loads through the unique arrangement of two rows of balls. Its robust structure and stable performance make it play a key role in many devices that require high load-......
The NEWBEE bearing Series cross cylindrical roller slewing bearing is engineered to handle combined axial, radial, and overturning moment loads simultaneously. Its 1:1 cross-arranged rollers and compact structure ensure minimal weight while maintaini......
The Three Row Cylindrical Roller Slewing Bearing achieves independent bearing of axial,radial,and moment loads through the orthogonal arrangement of three rows of cylindrical rollers. Its high-strength structure and optimized load distribution design......
The four-point contact ball slewing bearing features a unique four-point contact design, where steel balls interact with arc-shaped raceways to handle axial, radial, and overturning moment loads simultaneously. Available in split or integral ring str......
Professional Team: Comprising over 30 senior engineers, covering fields such as mechanical design, materials science, and industrial automation. They are well - versed in international standards like ISO, DIN, and JIS. By leveraging CAD/CAE assisted design, 3D models can be rapidly generated and simulated for analysis, ensuring the feasibility of the plan and performance optimization.Customization Process: Conduct in - depth communication regarding application scenarios such as high - temperature, high - speed, and heavy - load conditions. Design bearing structures, material selection, and lubrication solutions in a targeted manner. Complete the sample design within 15 days, support parameter adjustment and performance verification to shorten the development cycle. A strict confidentiality agreement is in place to safeguard the safety of clients' drawings and patents.
Advanced Manufacturing: Equipped with fully automatic CNC machine tools, high - precision grinding equipment, and heat - treatment production lines, capable of manufacturing all types of bearings. By adopting precision cold ring rolling and super - fine grinding processes, the tolerance can reach P5/P4 level, meeting high - precision requirements. The monthly production capacity exceeds 2 million sets, enabling flexible response to both small - batch trial production and large - volume orders. The regular delivery cycle is 30 days.Intelligent Management: The MES system monitors the production progress in real - time, and the entire order process is traceable. The modular production line can quickly change models to adapt to the production of multiple specifications and batches.
Full - process Quality Control: The raw materials are double - verified by a spectral analyzer and a metallographic microscope. Key dimensions are monitored online by a profilometer, a roundness tester, etc., with an automatic rejection rate of non - conforming products reaching 100%. The noise level, vibration value, and service life are fully inspected at a rate of 100%. Durability tests are carried out under simulated working conditions.
Authoritative Certifications: Passed ISO 9001 and GBT307.1 certifications. SGS third - party inspection reports can be provided along with the goods to meet the market access requirements worldwide.
Warehousing and Packaging The intelligent warehousing center dynamically manages inventory and supports the VMI (Vendor Managed Inventory) model. Customized anti - rust packaging with vacuum and shock - proof measures ensures zero damage during transportation. Global Network We cooperate with DHL, FedEx, etc., and offer trade terms such as FOB (Free on Board), CIF (Cost, Insurance and Freight), and DDP (Delivered Duty Paid). With overseas warehouses established in Europe and North America, orders can be delivered within 7 - 10 days.
Wind Turbines: In large-scale wind power generating units, slewing bearings are used to support the nacelle and the impeller. They bear various loads under the action of strong winds. Their reliabilit...
Cranes: Whether it's truck cranes, crawler cranes or tower cranes, slewing bearings are the key components for realizing the rotation of the boom. They can bear the huge axial forces, radial forces an...
CT Machines: The rotating gantry of a CT machine realizes high-precision rotation through slewing bearings, ensuring that the X-ray source and the detector can accurately rotate around the patient dur...
Radar Antennas: The azimuth and elevation rotations of radar antennas are usually realized by slewing bearings. They can ensure that the antennas can quickly and accurately point to the target under v...
What is Slewing Bearing?
Slewing bearings are large-scale rolling-element bearings that enable rotational movement between two components while simultaneously handling substantial axial, radial, and moment loads. Unlike conventional bearings, slewing bearings feature a large diameter-to-cross-section ratio and are specifically engineered to support heavy combined loads in multiple directions. These robust components typically incorporate mounting holes in their rings for direct attachment to structural elements, eliminating the need for additional bearing housings.
The fundamental design of slewing bearings integrates rolling elements (balls or rollers) arranged in single or multiple rows between concentric raceways. This configuration allows them to accommodate complex load combinations that would normally require multiple conventional bearings. Common types include single-row ball slewing bearings for moderate loads, double-row ball slewing bearings for higher load capacity, and cross-roller slewing bearings for applications demanding high precision and moment load resistance.
Slewing bearings are characterized by their large dimensions, typically ranging from 100mm to over 5000mm in diameter, with specialized designs reaching even larger sizes. Their versatile design principles enable customization for specific application requirements, making them indispensable components in numerous heavy-duty rotational systems across various industries.
The Feature of Slewing Bearings
Slewing bearings possess distinctive characteristics that make them essential for heavy-duty rotational applications:
High Load Capacity: Designed to withstand exceptionally high combined loads, including axial, radial, and moment loads simultaneously, with some large-diameter bearings capable of supporting loads exceeding 10,000 kN.
Integrated Design: Featuring built-in mounting holes, lubrication systems, and often incorporating sealing elements, slewing bearings simplify machine design and reduce overall system complexity.
Compact Profile: Despite their large diameter, slewing bearings maintain a relatively slim cross-section, optimizing space utilization in equipment design and minimizing the overall envelope dimensions.
Customization Capability: Manufacturers can tailor slewing bearings with specific gear teeth (internal or external), special sealing arrangements, customized lubrication systems, and various hardening treatments to meet precise application requirements.
Durability and Long Service Life: Constructed from high-quality steel and subjected to specialized heat treatment processes, slewing bearings offer exceptional wear resistance and extended operational life under demanding conditions.
Smooth Operation: Precision-engineered raceways and optimized rolling element geometry ensure smooth, consistent rotation even under maximum load conditions, contributing to overall system reliability.
The Application of Slewing Bearings
Slewing bearings serve as critical components across numerous industries requiring robust rotational capabilities:
Construction Machinery: Tower cranes, mobile cranes, excavators, and concrete pumps rely on slewing bearings for smooth rotation under extreme load conditions.
Wind Energy: Pitch and yaw systems in wind turbines utilize slewing bearings to adjust blade angle and position the nacelle according to wind direction.
Mining Equipment: Heavy-duty excavators, stackers, reclaimers, and tunnel boring machines employ slewing bearings in their rotational mechanisms.
Military and Defense: Turret systems in armored vehicles, radar antennas, and missile launching systems incorporate precision slewing bearings for reliable performance.
Industrial Machinery: Hydraulic work platforms, forklifts, welding positioners, and large indexing tables utilize slewing bearings for rotational functionality.
Marine and Offshore: Deck cranes, propulsion systems, and offshore platform equipment depend on corrosion-resistant slewing bearings for maritime applications.
Solar Power Generation: Solar tracking systems use slewing bearings to precisely orient solar panels toward the sun throughout the day.
How to Choose Slewing Bearings?
Selecting the appropriate slewing bearing requires careful consideration of multiple technical factors:
Load Analysis: Precisely calculate all anticipated load components - axial, radial, and moment loads - including dynamic factors and shock loads that may occur during operation.
Size and Dimension Requirements: Determine the necessary bearing diameter based on structural constraints and load distribution needs, while considering the optimal cross-section height for the application.
Bearing Type Selection: Choose between single-row ball, double-row ball, or cross-roller configurations based on the primary load direction and precision requirements of the application.
Gear Specifications: Decide whether internal or external gearing is required, and specify gear parameters including module, number of teeth, and quality grade based on drive system requirements.
Environmental Conditions: Consider operating temperature range, exposure to corrosive elements, potential contamination, and other environmental factors that may influence material selection and sealing requirements.
Mounting and Installation: Evaluate the structural design for proper bearing support, ensuring adequate stiffness and alignment to prevent deformation under load.
Maintenance Requirements: Assess accessibility for maintenance and select appropriate lubrication systems and sealing solutions to ensure long-term reliability.
The Price of Slewing Bearings
The cost of slewing bearings is influenced by numerous factors:
Size and Dimensions: Larger diameter bearings command significantly higher prices due to increased material usage and more complex manufacturing processes.
Bearing Type and Complexity: Cross-roller designs and triple-row roller slewing bearings are typically more expensive than single-row ball bearings due to their sophisticated internal structure.
Material and Heat Treatment: Special steel grades and advanced heat treatment processes, such as carburizing or induction hardening, contribute substantially to the overall cost.
Gear Manufacturing: The addition of precision gear teeth, especially high-quality gearing for heavy-duty applications, can increase the bearing cost by 15-30%.
Customization Level: Non-standard designs, special sealing arrangements, customized lubrication systems, and unique mounting configurations add engineering and manufacturing costs.
Quantity and Production Volume: Unit costs decrease significantly with larger production quantities due to optimized manufacturing processes and amortized setup expenses.
Quality Certifications: Bearings manufactured under strict quality systems (ISO 9001, DNV-GL, etc.) typically carry higher prices but offer assured reliability for critical applications.
Slewing Bearing Manufacturer
The global slewing bearing market comprises specialized manufacturers with distinct capabilities and focus areas:
Technical Expertise: Leading manufacturers employ sophisticated engineering capabilities including advanced calculation software, finite element analysis, and application engineering support to optimize bearing selection and performance.
Manufacturing Capabilities: State-of-the-art production facilities incorporate CNC machining centers, advanced heat treatment equipment, precision grinding machines, and comprehensive quality control systems.
Quality Assurance: Reputable manufacturers implement rigorous quality control procedures throughout the manufacturing process, from material certification to final inspection, often holding international quality certifications.
Customization Services: Experienced manufacturers offer comprehensive customization options including special seal designs, corrosion protection coatings, integrated sensors, and tailored lubrication systems.
Technical Support: Quality manufacturers provide extensive technical support including installation guidance, maintenance recommendations, and troubleshooting assistance throughout the bearing lifecycle.
NewBee Transmission has established itself as a reliable partner in the slewing bearing market, leveraging strong relationships with leading manufacturers to provide optimal solutions for diverse application requirements. Our engineering team possesses deep expertise in slewing bearing selection and application, ensuring customers receive the most appropriate bearing solution for their specific needs.
When selecting a slewing bearing manufacturer, consider their technical capabilities, industry experience, quality certifications, and after-sales support. A reliable manufacturer should provide comprehensive technical documentation, application engineering support, and responsive customer service throughout the project lifecycle.
At NewBee Transmission, we understand that slewing bearings are critical components in heavy equipment. Our commitment extends beyond product supply to include technical consultation, design optimization, and ongoing support to ensure the success of your applications. Contact our engineering team to discuss how our slewing bearing solutions can address your specific requirements.
NewBee Machinery provides high quality shaft, bearing, gears, CNC machines and other customized mining machinery.
NewBee Machinery has 20 years’ experience in customize machinery parts.
Professional and effective research and design team
We have advanced large CNC centner and processing equipment.
NewBee Machinery provides cost effective products for global customers.
If you are looking for customized machinery parts, precision bearings or CNC Machinery, feel free to contact us and our team will reply within 48 hours.
WhatsApp
sales@newbeetrans.com
+8615090185276