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
010.20.200	120	280	60	330	20
011.20.200	120	280	60	330	20
010.20.224	144	304	60	380	22
011.20.224	144	304	60	380	22
010.20.250	170	330	60	420	25
011.20.250	170	330	60	420	25
010.20.280	200	360	60	490	28
011.20.280	200	360	60	490	28
013.25.315	222	408	70	760	43
011.25.315	222	408	70	760	43
010.25.315	222	408	70	760	43
013.25.355	262	448	70	810	49
010.25.355	262	448	70	810	49
011.25.355	262	448	70	810	49
011.25.400	307	493	70	960	55
013.25.400	307	493	70	960	55
010.25.400	307	493	70	960	55
011.25.450	357	543	70	1120	64
010.25.450	357	543	70	1120	64
013.25.450	357	543	70	1120	64

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.