RKB International

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SLEWING BEARING

High-Precision Slewing Bearings for Heavy-Duty Industrial Applications

Technical Specifications
Ball Slewing Bearings Single Row / Double Row

  • Type: No Gear / External Gear / Internal Gear
  • Ball track P.D.C DL: Up to 3500 mm
  • Diameter of Rolling Element: Up to 50 mm
  • Outer Diameter (Da): Up to 3758.4 mm
  • Inner Diameter (Di): Up to 3329 mm
  • Total Height (H): Up to 159 mm

Double-Axial Ball Slewing Bearing

  • Type: No Gear / External Gear / Internal Gear
  • Ball track P.D.C DL: Up to 3500 mm
  • Diameter of Rolling Element: Up to 50 mm
  • Outer Diameter (Da): Up to 3812.4 mm
  • Inner Diameter (Di): Up to 3327 mm
  • Total Height (H): Up to 226 mm

Three-Row Roller Slewing Bearing

  • Type: No Gear / External Gear / Internal Gear
  • Ball track P.D.C DL: Up to 3500 mm
  • Diameter of Rolling Element: Up to 45 mm
  • Outer Diameter (Da): Up to 3856 mm
  • Inner Diameter (Di): Up to 3260 mm
  • Total Height (H): Up to 229 mm

Slew Drives

  • Slewing Drive Ratio: Up to 102:1
  • Efficiency: 43%
  • Nom. Output Torque: Up to 9.360 N.m
  • Max. Output Torque: Up to 18.720 N.m
  • Holding Torque: Up to 65.633 N.m
  • Tilting Moment Torque: Up to 135.600 N.m
  • Static Radial Rating: Up to 390.7 kN
  • Static Axial Rating: Up to 976.8 kN
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Product Overview
Manufactured by our partner factory in Europe, RKB International’s Slewing Bearings are designed for challenging industrial environments, where high load-bearing capacities, precise motion control, and durability are critical. Our range of slewing bearings includes ball, roller, and cross-roller types, each designed to handle demanding conditions such as heavy loads, misalignments, and harsh ambient environments. With short delivery times, corrosion protection, and customized engineering, RKB Slewing Bearings ensure high reliability and efficiency in various industrial applications.

Applications of Slewing Bearings
Slewing bearings are essential components in industrial equipment that require precise motion control and load distribution. These bearings are ideal for:

  • Cranes and Hoists: Ensuring smooth rotational movement and high load capacity for lifting systems.
  • Mechanical Engineering: Supporting high-precision rotational systems in machinery and plant operations.
  • Mining Equipment: Handling the immense load and constant movement required in open-pit mining machinery.
  • Bulk Handling and Conveyance: Providing reliable performance in equipment designed for material transport.

Types of Slewing Bearings
RKB International offers a variety of slewing bearing types, each tailored for specific industrial needs:

Ball Slewing Bearings Double-Axial Ball Slewing Bearings Three-Row Roller Slewing Bearings Slew Drives
Available in single-row and double-row designs, handling average axial forces and radial loads. Designed for equipment subjected to quick and continuous load changes, such as bucket-wheel excavators. Built for extreme static and dynamic load capacities in applications like heavy-duty cranes and tunnel-boring machines. It supports high radial forces and provides near-zero clearance, which is ideal for medical devices and antennas.

Key Features of Slewing Bearings
RKB International’s Slewing Bearings are crafted to ensure maximum reliability and performance in challenging environments. Notable features include:

  • High Load Capacity: Built to withstand significant radial and axial loads, ideal for heavy-duty applications.
  • Customizable Engineering: Tailored designs to meet specific industrial requirements, ensuring optimal performance.
  • Corrosion Protection: Available in corrosion-resistant versions for extended service life in harsh environments.
  • Integrated Drives: Custom solutions available with integrated drives for smooth and efficient operation.
  • Safety and Compliance: Certified to meet EN 10204 standards, ensuring high-quality materials and precise dimensions.

Industries Served
RKB International’s Slewing Bearings are utilized in industries that require high load capacities, precise rotational movement, and reliable performance:

  • Raw Material Handling (Steel, Power, Mining)
  • Ports
  • Crane Components
  • Motion, Drive, and Control Systems

Why Choose Our Slewing Bearings?
RKB International’s Slewing Bearings provides industry-leading solutions for complex, heavy-duty machinery. With a broad selection of ball, roller, and cross-roller designs and customized options, our bearings deliver exceptional performance, durability, and flexibility in challenging conditions. From cranes to mining equipment, our slewing bearings ensure precise motion control and extended service life.

Contact Us for more details on how our Slewing Bearings can benefit your operations.

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