7218 Series Angular Contact Ball Bearing | Robust 90mm Bore Design for Industrial Loads

The 7218 Series is a durable and versatile Angular Contact Ball Bearing, developed to manage combined radial and axial loading in one direction effectively. Offering standard contact angle configurations to meet diverse requirements, it provides reliable shaft support and operational stability for medium-duty applications. This bearing is a dependable component in systems demanding robust performance, such as industrial gearboxes, heavy-duty fans, agricultural machinery, and general power transmission equipment.



7218 Series Angular Contact Ball Bearing Single Row | 15°–40° Contact Angle | Standard Series | Available with Shields or Seals

The 7218 Series is a medium-duty Angular Contact Ball Bearing engineered for applications requiring robust support under combined radial and axial loading conditions. Characterized by its versatile contact angle options, this series delivers reliable performance, enhanced system rigidity, and smooth operation for a broad range of industrial uses. It is a preferred choice for gearboxes, industrial fans, agricultural machinery, and general power transmission systems where durability and precision are paramount.

7218 Series Angular Contact Ball Bearing | Robust 90mm Bore Design for Industrial Loads

Comprehensive Applications

Suited for a wide spectrum of medium-duty industrial and mechanical applications:

Material Handling & Agricultural Equipment
  • Crane Slewing Mechanisms
  • Hoist Drives
  • Tractor PTO (Power Take-Off) Supports
  • Combine Harvester Drives
  • Agricultural Conveyor Systems
Industrial Gearboxes & Drives
  • Industrial Reduction Gear Units
  • Power Transmission Gearboxes
  • Conveyor Head Drives
  • Mixer and Agitator Drives
  • Extruder Gearboxes
  • Heavy-Duty Pump Gear Sets
General Heavy Machinery & Automotive
  • Medium Truck Transmission Systems
  • Off-Road Vehicle Axle Drives
  • Industrial Compressor Crankshafts
  • Test Bench Spindles
  • Woodworking Machine Spindles
  • Mining Equipment Drives
Pumps, Fans & Heavy-Duty Rotating Machinery
  • Large Centrifugal Pump Shafts
  • Industrial Air Handling Fans
  • Cooling Tower Gear Drives
  • Exhaust Fan Motors
  • Drum & Pulley Drives
  • Ventilation System Motors

Key Performance Features

01. Robust Load Handling and Stability

With its optimized internal geometry and selectable contact angles (C=15°, AC=25°, B=40°), the 7218 Series offers substantial capacity to handle significant axial loads while maintaining system stability and reducing shaft deflection.

02. Durable and Reliable Operation

Manufactured to consistent quality standards, these bearings provide dependable service life with smooth rotation, making them suitable for continuous operation in demanding industrial environments.

03. Flexible Installation and Protection

Designed for single or multiple mounting configurations to meet various load and stiffness requirements. Options include metal shields (ZZ) for contamination deflection or rubber seals (2RS) for enhanced protection in dusty or humid conditions.

Technical Specifications

Bearing Type Single Row Angular Contact Ball Bearing
ISO Dimension Series 02 Series
Basic Designation 7218
Suffix Options C (15°), AC (25°), B (40°), ZZ (shields), 2RS (seals)
Bore Diameter (d) 90 mm
Outer Diameter (D) 160 mm
Width (B) 30 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel or Glass Fiber Reinforced Polyamide
Dynamic Load Rating (Cʳ) 108 kN
Static Load Rating (C₀ʳ) 88.5 kN
Limiting Speed (Grease) 5,600 r/min
Limiting Speed (Oil) 7,500 r/min
Weight (approx.) 2.35 kg

Interchange Part Numbers

Direct replacement for:

  • SKF: 7218 C, 7218 AC, 7218 B
  • NSK: 7218C, 7218AC
  • FAG: 7218 C, 7218 AC
  • NTN: 7218C, 7218AC

Design & Configuration

The 7218 Series is typically available in an open design for applications with centralized lubrication systems. For standalone or easier maintenance setups, non-contact metal shields (ZZ) or contact rubber seals (2RS) can be specified. The range of contact angles allows precise matching to the application's axial load demands and rigidity needs.

"For industrial gearboxes and heavy-duty fan applications subject to significant axial thrust, the 7218 AC (25° contact angle) offers a proven balance of load capacity and operational efficiency.”

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