Single-Row Crossed Roller Slewing Bearings

Single-Row Crossed Roller Slewing Bearings are precision rotary components featuring cylindrical rollers arranged alternately at 90° between two raceways. This crossed roller design provides higher rigidity and moment load capacity compared to traditional ball slewing bearings, making them ideal for applications requiring smooth rotation under combined loads.

Structural Features

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

Applications

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

Popular Models

Product Specifications

Bearing No.	d	D	H	Cor	Weight
110.40.2000	1825	2178	112	6860	900
113.40.2000	1825	2178	112	6860	900
114.40.2000	1825	2178	112	6860	900
111.40.2000	1825	2178	112	6860	900
112.40.2000	1825	2178	112	6860	900
111.40.2240	2065	2418	112	7640	1000
112.40.2240	2065	2418	112	7640	1000
110.40.2240	2065	2418	112	7640	1000
113.40.2240	2065	2418	112	7640	1000
114.40.2240	2065	2418	112	7640	1000
113.40.2500	2325	2678	112	7970	876
114.40.2500	2325	2678	112	7970	876
110.40.2500	2325	2678	112	7970	876
111.40.2500	2325	2678	112	7970	876
112.40.2500	2325	2678	112	7970	876
113.40.2800	2625	2978	112	9600	1250
114.40.2800	2625	2978	112	9600	1250
111.40.2800	2625	2978	112	9600	1250
110.40.2800	2625	2978	112	9600	1250
112.40.2800	2625	2978	112	9600	1250

FAQ

What is the advantage of crossed roller over ball slewing bearings?

Crossed roller bearings use cylindrical rollers (line contact) instead of balls (point contact), providing 30-50% higher rigidity and moment load capacity. The alternating 90° roller arrangement allows a single bearing to handle axial, radial, and tilting loads simultaneously with minimal deflection.

How to maintain single-row crossed roller slewing bearings?

Regular maintenance includes: regreasing every 100-200 operating hours, checking bolt torque periodically, inspecting seals for damage, and monitoring for unusual noise or play during operation.

Can your crossed roller bearings replace IKO, THK or SKF?

Yes. We manufacture crossed roller slewing bearings interchangeable with IKO, THK, SKF, Rothe Erde, and other major brands. Please provide original part number or drawing for cross-reference.