7218 BECBJ
Single Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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7218 BECBJ Bearing Product Overview & Core Advantages
The 7218 BECBJ is a single row angular contact ball bearing engineered for high-precision applications requiring superior performance under combined loads. This metric bearing features a 40° contact angle, enabling it to efficiently handle significant axial loads in one direction while supporting substantial radial loads. Manufactured to P6 (ABEC-3) tolerance class, it delivers exceptional running accuracy and rotational stability. The bearing's optimized internal geometry and stainless steel cage contribute to its reliable operation at limiting speeds up to 5000 rpm, making it ideal for demanding industrial environments.
7218 BECBJ Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| BE | Increased contact angle (40°) | Enhanced axial load capacity in one direction |
| CB | Normal internal clearance | Balanced performance for standard operating conditions |
| J | Stainless steel pressed cage | Corrosion resistance and suitability for high-speed operation |
7218 BECBJ Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 40° contact angle and precisely calculated shoulder diameters (inner ring: 117.1mm/103.06mm, outer ring: 134.8mm) ensure optimal load distribution and high rigidity under combined loading conditions.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and fatigue life. The stainless steel cage offers superior corrosion resistance and dimensional stability at high rotational speeds.
Enhanced Load Capacity: With a dynamic load rating of 26,100 lbf and static load rating of 23,400 lbf, this bearing delivers reliable performance in demanding applications requiring substantial load support.
Precision Engineering: Manufactured to P6 tolerance class with tight dimensional tolerances (bore: -0.015mm to 0, OD: -0.018mm to 0), ensuring precise fitment and minimal runout for high-precision applications.
7218 BECBJ Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Industrial Pumps: Centrifugal pumps and high-pressure pumping systems
- Electric Motors: High-performance motors requiring precise shaft positioning
- Gearboxes: Power transmission systems with combined radial and axial loads
- Precision Instruments: Medical equipment and measuring devices requiring high accuracy
- Material Handling Equipment: Conveyor systems and automated guided vehicles
