High-Precision Rotary Table Slewing Bearing for Demanding Industrial Applications
Product Overview
Engineered for superior rotational accuracy and structural rigidity, our Rotary Table Slewing Bearing integrates the functionality of a precision bearing with a robust structural support element. Designed to simultaneously withstand complex combined loads—including significant axial forces, radial loads, and high overturning moments—this component is indispensable for modern machinery requiring precise indexing and heavy-duty rotation. By consolidating multiple bearing arrangements into a single, compact unit, it drastically simplifies machine design, reduces installation footprint, and lowers overall maintenance costs. The bearing features a "ready-to-mount" design with pre-drilled mounting holes on both inner and outer rings, eliminating the need for complex housing preparations.
Performance and Quality Characteristics
The core philosophy behind our manufacturing process focuses on delivering exceptional stiffness and rotational precision. We utilize a negative clearance (pre-load) design strategy, which ensures the bearing maintains high rigidity and minimal deflection even under maximum load conditions. This pre-loading eliminates internal play, resulting in superior rotational accuracy essential for high-precision machining and automation tasks.
Our production facilities employ advanced grinding and super-finishing techniques to achieve raceway surface finishes that minimize friction and heat generation. The rolling elements—whether high-grade steel balls or cylindrical rollers—are sorted into tight tolerance groups to ensure uniform load distribution. This meticulous attention to detail results in a product with low starting torque, smooth operation, and extended service life, capable of maintaining accuracy over millions of rotation cycles.
Technical Specifications
Our Rotary Table Slewing Bearings are available in a wide range of dimensions and configurations to suit specific application requirements.
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Parameter
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Specification Details
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Bearing Types
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YRT Series, ZKLDF Series, High-Speed YRTS, Crossed Roller
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Bore Diameter
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100 mm – 1000+ mm (Customizable)
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Precision Class
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P4, P2, and Special High-Precision Grades
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Axial Runout
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≤ 10 µm (Microns) depending on size
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Radial Runout
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≤ 15 µm (Microns) depending on size
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Material
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High-Carbon Chromium Bearing Steel (e.g., 42CrMo, 100Cr6)
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Cage Material
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Solid Brass, Steel, or Engineering Plastic (PA66)
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Sealing
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Double-row Seals (Rubber/Steel) for dust and moisture protection
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Lubrication
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Pre-lubricated with high-grade Lithium grease; Oil lubrication available
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Certifications and Standards
Quality assurance is the backbone of our manufacturing operations. Our Rotary Table Slewing Bearings are produced in strict compliance with international standards to ensure interoperability and reliability.
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ISO 9001 Certified Manufacturing: Ensuring consistent quality management across all production stages.
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JB/T 2300 Standard: Fully compliant with the industry standard for Slewing Bearings.
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DIN/ISO Precision Standards: Manufactured to meet or exceed P4 and P2 precision classes.
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RoHS Compliance: All materials and lubricants used are environmentally compliant.
Product Services
We understand that selecting the right bearing is critical to your machine's performance. Our service model extends beyond simple manufacturing.
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Technical Consultation: Our engineering team assists in calculating load ratings and selecting the optimal bearing series (e.g., YRT vs. ZKLDF) based on your speed and load requirements.
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OEM/ODM Solutions: We offer custom modifications, including special bore sizes, non-standard mounting hole patterns, and specific gear teeth modules.
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Rapid Prototyping: For specialized industrial needs, we can expedite the production of samples to validate design concepts.
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After-Sales Support: Comprehensive guidance on installation, mounting torque specifications, and maintenance schedules to maximize bearing life.
Applications
Our bearings are the "joints" of heavy and precision machinery, widely used in sectors requiring reliable rotary motion.
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CNC Machinery: Rotary tables, indexing heads, and tilting rotary tables for 5-axis machining centers.
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Industrial Automation: Robotic arms, welding positioners, and assembly turntables.
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Medical Equipment: High-precision rotation stages for CT scanners and radiation therapy equipment.
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Optical & Defense: Radar antennas, satellite communication systems, and optical tracking devices.
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Renewable Energy: Solar tracking systems and wind turbine pitch control mechanisms.
Frequently Asked Questions (FAQ)
Q: What is the difference between YRT and ZKLDF series bearings?
A: The YRT series utilizes a combination of radial and thrust rollers, offering extremely high rigidity and load capacity, making it ideal for heavy cutting forces. The ZKLDF series uses angular contact ball bearings, which allow for higher rotational speeds and lower friction, suitable for high-speed indexing applications.
Q: Do you provide bearings with gear teeth?
A: Yes. We can machine external or internal gear teeth directly onto the bearing rings according to your specific module and pressure angle requirements.
Q: How do you ensure the precision of the bearing after shipping?
A: We use specialized packaging that immobilizes the bearing rings to prevent any movement or shock during transit. Additionally, our bearings are treated with anti-corrosion coatings and vacuum-sealed for protection.
Q: Can this bearing handle both axial and radial loads simultaneously?
A: Absolutely. The design of the Rotary Table Slewing Bearing is specifically engineered to handle complex combined loads, including axial, radial, and moment loads, without compromising performance.
