Single-Row Crossed Roller Slewing Bearings

Single-row crossed roller slewing bearings feature cylindrical rollers arranged in a single raceway with alternating 90° axes. This unique design allows one bearing to handle axial, radial, and moment loads simultaneously with minimal deflection.

Key structural features:

• Crossed roller design – Rollers arranged at 90° alternating angles for multi-directional load capacity
• High rigidity – Line contact between rollers and raceways provides 30-50% higher rigidity than ball bearings
• Compact structure – Single raceway design saves space while maintaining high load capacity
• Forged steel rings – 50Mn or GCr15 material for durability
• Hardened raceways – Induction hardened to HRC58-62 for wear resistance
• Segmented cage – Brass or steel cage separates rollers and reduces friction
• Gear options – External (111/112), internal (113/114), or gearless (110)
• Sealing system – Rubber seals prevent contamination

Series code reference:

• 110 series – Gearless design for external drive
• 111/112 series – External gear for pinion drive
• 113/114 series – Internal gear for compact drive

Single-row crossed roller slewing bearings are widely used in applications requiring high rigidity and precision rotation:

• Construction machinery – Cranes, excavators, aerial work platforms
• Industrial equipment – Rotary tables, indexing equipment, robotic turntables
• Medical equipment – CT scanners, imaging systems, radiation therapy machines
• Energy industry – Wind turbine yaw systems, solar trackers
• Other applications – Radar antennas, packaging machinery, inspection equipment