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60 Series
Home Deep Groove Ball Bearings 60 Series

6018 Open Deep Groove Ball Bearing for Custom Lubrication Systems | 90×140×24 Mm

6018 Open Deep Groove Ball Bearing for Custom Lubrication Systems | 90×140×24 Mm

The 6018 is an Open-Type Deep Groove Ball Bearing engineered for applications requiring maximum flexibility in lubrication and sealing arrangements. Without integrated seals or shields, this bearing design allows for customized grease selection, relubrication intervals, and external sealing solutions tailored to specific operating conditions. Featuring a 90 mm bore and 24 mm width, the 6018 open configuration is ideal for large electric motors, industrial gearboxes, and heavy machinery where maintenance accessibility and optimized lubrication management are priorities.

6018 Open Deep Groove Ball Bearing 90×140×24 mm | 60 Series – Standard Section | Open Type (No Seals)

Built on proven deep groove geometry, this unsealed bearing delivers exceptional performance with minimal rotational resistance, enabling operation at speeds up to 8,500 r/min (Oil). The open design facilitates easy relubrication and inspection, making it perfect for applications where regular maintenance is feasible and customized lubrication strategies enhance operational longevity. The 6018 supports substantial radial loads while accommodating moderate axial forces in both directions.

6018 Open Deep Groove Ball Bearing for Custom Lubrication Systems | 90×140×24 Mm

Comprehensive Applications

Suitable for implementation across multiple industrial sectors requiring customizable bearing solutions:

Large Electric Motors & Generators
  • High-Power Industrial Motor Assemblies (50kW+)
  • Generator Rotor Support Systems
  • Wind Turbine Gearbox Components
  • Marine Propulsion Motor Bearings
Heavy Industrial Equipment
  • Steel Mill Rolling Equipment
  • Mining Crusher and Screen Drives
  • Cement Mill Trunnion Supports
  • Paper Machine Calendar Rolls
Specialized Machinery
  • Textile Spinning Frame Spindles
  • Printing Press Cylinder Supports
  • Rubber Extruder Drive Systems
  • Plastic Injection Molding Machine Platens
Pump & Compressor Applications
  • Centrifugal Pump Drive Ends
  • Reciprocating Compressor Crankshafts
  • Vacuum Pump Rotor Supports
  • Hydraulic Pump Motor Bearings

Key Performance Features

01. Maximum Lubrication Flexibility

The open configuration of the 6018 permits selection of specialized lubricants based on operating temperature, speed, and environmental conditions. This adaptability enables optimization for extreme temperatures, food-grade requirements, or high-speed applications where standard greases may be inadequate.

02. Reduced Rotational Friction

Eliminating contact seals or shields minimizes friction torque, contributing to improved energy efficiency in motor applications. The 6018 open type achieves lower operating temperatures compared to sealed variants, particularly beneficial in high-speed or continuous-duty applications.

03. Cost-Effective for Protected Environments

In applications where external housing seals provide adequate contamination protection, the 6018 open bearing offers a economical solution without redundant sealing. This configuration is particularly advantageous in clean industrial environments or sealed gearbox housings.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 60 Series – Standard Section
Basic Designation 6018
Suffix Open (No Seals or Shields)
Bore Diameter (d) 90 mm
Outer Diameter (D) 140 mm
Width (B) 24 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class P6 (ABEC-3) / P5 (ABEC-5) Available
Cage Material Pressed Steel
Dynamic Load Rating (Cʳ) 58.5 kN
Static Load Rating (C₀ʳ) 49.0 kN
Limiting Speed (Grease) 6,000 r/min
Limiting Speed (Oil) 8,500 r/min
Weight (approx.) 1.05 kg

Interchange Part Numbers

Standard interchange designations include:

  • SKF: 6018
  • NSK: 6018
  • FAG: 6018
  • NTN: 6018
  • KOYO: 6018
  • Timken: 6018
  • NACHI: 6018

Design & Configuration

The 6018 open bearing is supplied without seals or shields, requiring implementation of appropriate external sealing in the application design. For environments with dust, moisture, or fine particulates, housing seals or labyrinth arrangements must be incorporated. When contamination risk is minimal and relubrication access is available, the open type provides optimal performance and service life. For applications needing integral protection, consider the shielded (6018-ZZ) or sealed (6018-2RS) variants.

"An optimal choice for large industrial machinery, power transmission systems, and applications where customized lubrication strategies, maintenance accessibility, and external sealing arrangements provide superior performance and cost efficiency."

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