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Single-row Four Point Angular Contact Ball Slewing Bearings

Versatile Load Handling for Precision Rotational Systems

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 machineryCranes, 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

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.

Inquiry Bearing No. ID OD H Cr Cor Mass
011.30.500 398 602 80 1290 75.8
012.30.500 398 602 80 1290 75.8
011.25.500 398 602 80 1290 75.8
012.25.500 398 602 80 1290 75.8
010.25.500 398 602 80 1290 75.8
014.25.500 398 602 80 1290 75.8
010.30.500 398 602 80 1290 75.8
013.25.500 398 602 80 1290 75.8
014.30.500 398 602 80 1290 75.8
013.30.500 398 602 80 1290 75.8
014.25.560 458 662 80 1440 94
013.25.560 458 662 80 1440 94
010.25.560 458 662 80 1440 94
014.30.560 458 662 80 1440 94
010.30.560 458 662 80 1440 94
013.30.560 458 662 80 1440 94
011.30.560 458 662 80 1440 94
012.30.560 458 662 80 1440 94
011.25.560 458 662 80 1440 94
012.25.560 458 662 80 1440 94

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.