What types of heavy-duty machinery or equipment typically utilize the Three-Row Roller Slewing Bearing (13 Series)?

The Three-Row Roller Slewing Bearing (13 Series) is specifically designed for applications that require high load-carrying capacity, large diameter rotation, and precise axial, radial, and moment load handling. Due to its robust structure—featuring three independent raceways and rows of rollers oriented to accommodate different forces—it is widely used in heavy-duty machinery and large-scale equipment across various industries.

1. Truck-Mounted Cranes and Mobile Cranes
These machines demand high axial and moment load capacities due to the long booms and heavy lifting.

The 13 Series slewing bearing allows for stable rotation of the superstructure, even under extreme offset loads.

Its ability to manage complex, combined forces makes it ideal for lifting equipment that operates in variable positions.

2. Large Crawler Cranes
Used in construction and industrial projects, crawler cranes require slewing bearings that can handle very high moment loads from long boom arms and counterweights.

The 13 Series design offers excellent load separation for safe, efficient slewing under heavy static and dynamic conditions.

3. Shipboard and Offshore Cranes
Marine environments involve highly variable loads, wind influence, and corrosion risks.

Three-row roller bearings in this context provide smooth, secure rotation and high reliability for operations such as cargo loading, drilling support, or offshore wind installation.

4. Tunnel Boring Machines (TBMs)
TBMs exert massive forces during excavation, especially in rotating cutting heads.

The 13 Series slewing bearing accommodates the axial thrust and moment loads generated as the cutter head drills through rock or soil.

5. Stackers and Reclaimers (Bulk Material Handling Equipment)
Common in ports, power plants, and mining terminals, these machines require continuous and stable slewing motion while moving heavy bulk materials.

The bearing’s multi-row construction is suited to the intermittent but heavy forces exerted during stacking or reclaiming operations.

6. Ladle Turrets and Charging Devices in Steel Mills
These machines handle molten metal and require precision rotation and extreme heat resistance.

The 13 Series can support both heavy payloads and the rotational accuracy needed for metallurgical processes.

7. Wind Turbine Yaw Systems (Occasionally)
While more commonly using single-row four-point contact bearings, larger wind turbines may use three-row roller bearings for yaw rotation due to the high overturning moments from wind loads.

The increased load distribution helps maintain performance under continuous yawing motion.

8. Aerial Work Platforms and Drilling Rigs
These platforms require reliable and secure rotational systems for safety and stability when extended at height or in rugged terrain.

The three-row configuration ensures rigid load-bearing performance, even during unbalanced or dynamic movements.

9. Heavy-Duty Excavators and Mining Shovels
Especially in large-capacity machines, the slewing mechanism is subjected to intensive radial, axial, and tilting moment forces during digging, dumping, and swinging.

The 13 Series bearing provides long-term durability and resistance to vibration and impact loads.

10. Pipe Layer Machines and Large Turntables
These systems use slewing bearings for controlled movement of large pipe reels or rotation platforms.

High load demands and consistent rotational accuracy make the three-row roller design advantageous.

Summary Table of Applications

The Three-Row Roller Slewing Bearing (13 Series) is widely used wherever large-scale, high-load, and complex motion control is essential. Its design—featuring three independent load paths—allows it to safely manage axial, radial, and tilting moment loads simultaneously, making it one of the most reliable bearing types for critical heavy-duty applications.