Single-row Four Point Angular Contact Ball Slewing Bearings

Single-row Four Point Angular Contact Ball Slewing Bearings are the most common type of slewing bearings, featuring a single raceway with steel balls that contact the raceway at four points. This design allows one bearing to handle axial loads from both directions, radial loads, and tilting moments simultaneously, making them versatile for general industrial applications.

Structural Features

Single-row four point contact ball slewing bearings feature a gothic arch raceway design where steel balls contact the raceway at four points, allowing a single bearing to handle multi-directional loads with smooth rotation.

Key structural features:

Four point contact design – Single raceway handles axial loads from both directions, radial loads, and tilting moments
Gothic arch raceway – Optimized contact geometry for smooth rotation and low friction
High-quality steel balls – GCr15 bearing steel for durability
Forged steel rings – 50Mn or 42CrMo material
Hardened raceways – Induction hardened to HRC58-62
Segmented cage – Brass or steel cage for ball separation
Gear options – External (011/012), internal (013/014), or gearless (010)

Series code reference:

010 series – Gearless design for external drive
011/012 series – External gear for pinion drive
013/014 series – Internal gear for compact drive

Applications

Single-row four point contact ball slewing bearings are widely used in general industrial applications:

Construction machinery – Cranes, excavators, aerial work platforms
Industrial equipment – Rotary tables, indexing equipment, welding positioners
Renewable energy – Solar trackers, wind turbine yaw systems
Material handling – Conveyor turntables, stackers, reclaimers
Other applications – Medical equipment, packaging machinery, antenna rotators

Popular Models

Single-row Four Point Angular Contact Ball Slewing Bearings Product Specifications

View key technical parameters below. Click the inquiry button for detailed specs, custom pricing, and lead time.

Bearing No.	ID	OD	H	Cor	Mass
014. 75.4000	3772	4226	174	30200	3600
010.75.4000	3772	4226	174	30200	3600
013. 75.4000	3772	4226	174	30200	3600
010.50.4000	3772	4226	174	30200	3600
012. 50.4000	3772	4226	174	30200	3600
011.50.4000	3772	4226	174	30200	3600
014. 50.4000	3772	4226	174	30200	3600
012. 75.4000	3772	4226	174	30200	3600
013. 50.4000	3772	4226	174	30200	3600
011.75.4000	3772	4226	174	30200	3600
010.75.4500	4272	4726	174	34100	4000
012.50.4500	4272	4726	174	34100	4000
010.50.4500	4272	4726	174	34100	4000
011.50.4500	4272	4726	174	34100	4000
014.50.7500	4272	4726	174	34100	4000
012.75.4500	4272	4726	174	34100	4000
013.50.4500	4272	4726	174	34100	4000
011.75.4500	4272	4726	174	34100	4000
014.75.4500	4272	4726	174	34100	4000
013.75.4500	4272	4726	174	34100	4000

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FAQ

What is four point contact in slewing bearings?

Four point contact means each steel ball touches the raceway at four points (two on inner ring, two on outer ring). This gothic arch design allows a single bearing to handle axial loads from both directions, radial loads, and tilting moments simultaneously.

How to maintain four point contact ball slewing bearings?

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

Can your bearings replace Rothe Erde, SKF or IMO?

Yes. We manufacture four point contact ball slewing bearings to standard dimensions interchangeable with Rothe Erde, SKF, IMO, INA, Kaydon, and other major brands. Please provide original part number for cross-reference.