Three-Row Roller Slewing Bearings

Three-row roller slewing bearings feature three independent raceways – two for axial loads (upward and downward) and one for radial loads. Each raceway is optimized for its specific load direction, providing the highest load capacity and rigidity among all slewing bearing types.

Key structural features:

• Three independent raceways – Separate raceways for upward axial, downward axial, and radial loads
• Maximum load capacity – Highest capacity among all slewing bearing types
• Extreme rigidity – Minimal deflection under heavy moment loads
• Cylindrical rollers – Line contact for maximum load distribution
• Forged steel rings – 50Mn integral forging for superior strength
• Hardened raceways – Induction hardened to HRC58-62
• Segmented cages – Brass or steel cages for roller separation
• Gear options – External (132/133), internal (134), or gearless (130/131)

Series code reference:

• 130/131 series – Gearless design for external drive
• 132/133 series – External gear for pinion drive
• 134 series – Internal gear for compact drive

Three-row roller slewing bearings are designed for extreme heavy-duty applications demanding maximum load capacity:

• Construction machinery – Large cranes, tower cranes, crawler cranes, heavy excavators
• Port machinery – Ship unloaders, container cranes, stacker reclaimers, gantry cranes
• Offshore & marine – Offshore platform cranes, ship cranes, deck equipment
• Tunneling & mining – Tunnel boring machines (TBM), bucket wheel excavators, dredgers
• Heavy industrial – Large rotary tables, ladle turrets, heavy-duty positioners