High Load Angular Contact Ball Bearings 7206AC High Precision Ball Bearings
The 7206AC angular contact ball bearing delivers high-precision performance with exceptional load capacity, making it ideal for demanding industrial applications requiring reliability and precision.
| Bore diameter (d) | 30mm |
| Outer diameter (D) | 62mm |
| Width (B) | 16mm |
| Contact angle | 25° (suffix "AC" denotes standard angle) |
| Weight | Approximately 0.198~0.208kg (varies by manufacturer) |
| Structure | Single-row, non-separable design with inner/outer rings and ball assembly. Cage options include pressed steel (J steel stamping), brass solid, or hard fiber (e.g., phenolic resin). |
Dynamic load rating (Cr): 21.3~28.1kN (typical range)
Static load rating (C0r): 13.7~14.8kN
GCr15/SUJ2 high-carbon chromium bearing steel (HRC58-62), with optional ceramic (Si3N4 balls) or stainless steel (SUS440C) variants for specialized environments.
Limiting speed (grease-lubricated): 12,000~14,000rpm
Limiting speed (oil-lubricated): 16,000~19,000rpm
Precision class: Standard P0 (customizable to P5/P4 for high-accuracy machinery)
- Axial-radial load capability: Supports combined radial loads and unidirectional axial thrust
- Paired installation (e.g., back-to-back) required for bidirectional loads
- High-speed stability: Optimized raceway geometry reduces friction and heat generation
- Tolerance compatibility: Shaft H7/k6, Housing J7
- Temperature range: Standard -20°C to 120°C
- High-temperature variants: Up to 300°C with special heat-resistant materials
- Sealing options: Open design (standard) with optional 2RS (rubber seals) or ZZ (metal shields)
- Machine tool spindles: Provides rigidity for high-speed machining (CNC lathes and milling machines)
- Gearboxes and reducers: Handles radial loads in heavy-duty transmission systems
- Pumps and compressors: Resists axial thrust from fluid pressure
- Electric motor shafts: Optimized for low noise and vibration in EV drivetrains
- Heavy-duty vehicle differentials: Supports high torque in commercial truck axles
- Robotics: Enables precise positioning in robotic joints and linear actuators
- Medical devices: Used in high-speed dental handpieces and diagnostic imaging equipment
- Lubrication: Lithium-based grease (NLGI 2) with 10%-15% cavity filling; synthetic polyurea grease recommended for high-temperature applications
- Oil systems: Circulating oil systems preferred for continuous high-speed operation
- Inspection intervals: Monitor temperature and noise every 8-12 hours of operation
- Lubricant replacement: Every 2,000~5,000 hours depending on load and environment
- Standards compliance: Meets ISO 9001:2015 and industry standards (ISO 281 for load ratings)
- Cross-brand compatibility: Interchangeable with equivalent models from major manufacturers (NSK 7206AC, Timken 7206AC)
The 7206AC angular contact ball bearing combines robust load capacity (up to 28.1kN dynamic), precision, and adaptability, making it ideal for heavy-duty industrial and automotive applications. Its non-separable design and standardized interfaces simplify installation, while material and sealing options extend its usability across diverse environments. Paired with proper lubrication and maintenance, this bearing delivers reliable performance in high-speed, high-load scenarios.
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