Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
7205AC Angular Contact Ball Bearings High Speed For Precision Equipment
7205AC Angular Contact Ball Bearing High Speed Stable Performance For Precision Equipment
Basic Parameters
Bore diameter (d): 25mm
Outer diameter (D): 52mm
Width (B): 15mm
Contact angle: 25° (suffix "AC" denotes standard angle)
Weight: Approximately 0.135kg
Structure: Single-row, non-separable design with inner/outer rings and ball assembly
Core Performance Specifications
Load Capacity
Dynamic load rating (Cr): 15.8kN
Static load rating (C0r): 9.88kN
Material: GCr15/SUJ2 high-carbon chromium bearing steel, heat-treated to achieve surface hardness of HRC58-62
Speed & Precision
Limiting speed:
Grease-lubricated: 11,000~12,000rpm
Oil-lubricated: 15,000~16,000rpm
Precision class: Standard P0 (customizable to P5 for high-accuracy applications)
Technical Features
Axial-radial load capability: Supports combined radial and unidirectional axial loads; paired installation (e.g., back-to-back or face-to-face) required for bidirectional axial loads
High-speed stability: Optimized raceway geometry and low-friction cage design (e.g., J steel stamping) enable smooth operation at elevated speeds
Structural & Environmental Adaptability
Tolerance compatibility
Shaft: H7/k6
Housing: J7
Environmental resistance
Standard version: Suitable for -20°C to 120°C operating temperatures
High-temperature variants: Up to 300°C with special heat-resistant materials
Corrosion-resistant options: Stainless steel (e.g., SUS440C) available for harsh environments
Sealing options
Open design (standard)
Optional 2RS (rubber seals) or ZZ (metal shields) for dust/moisture protection
Typical Applications
Industrial Machinery
Machine tool spindles: Provides precision and rigidity for high-speed machining (e.g., CNC lathes, milling machines)
Gearboxes and reducers: Handles radial loads and torque transmission in heavy-duty systems
Pumps and compressors: Resists axial thrust from fluid pressure
Automotive & Transportation
Turbochargers: Supports high-speed rotation under extreme temperatures (e.g., electric motor-driven turbo systems)
Differential drives: Ensures smooth power transfer in vehicle drivetrains
Energy & Precision Equipment
Electric motor shafts: Optimized for low noise and vibration
Robotics: Enables precise positioning in robotic joints
Maintenance & Lubrication Guidelines
Lubrication
Grease: Lithium-based grease (e.g., NLGI 2) with 10%-15% cavity filling; synthetic grease (e.g., polyurea) recommended for high-temperature applications
Oil: Circulating oil systems preferred for continuous high-speed operation to enhance heat dissipation
Inspection intervals
Monitor temperature and noise during operation
Replace lubricant every 2,000~5,000 hours depending on load and environment
Certifications & Compatibility
Standards compliance: Meets ISO 9001:2008 and industry standards (e.g., ISO 281 for load ratings)
Cross-brand compatibility: Interchangeable with equivalent models from major manufacturers (e.g., NSK 7205AC, Timken 7205AC)
Customization Options
Parameter adjustments
Contact angle: 15° (suffix "C") or 40° (suffix "B") available via special order
Surface coatings: Phosphating or black oxide for corrosion resistance
Special configurations
Full ceramic (Si3N4 balls): For non-magnetic or high-speed applications
Laser-etched part numbers: For traceability
Summary
The 7205AC angular contact ball bearing combines high load capacity, precision, and adaptability, making it ideal for critical 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, heavy-load scenarios.
Introduction:1.Covering an area of 80 mu (about 53,333 square meters), our factory has a 60-person team including 4 professional engineers, ensuring stable production and technical support.
2. Focusing on bearing production for 25 years, quality is our only guarantee3. Wafangdian Bearing Factory was... Introduction:1.Covering an area of 80 mu (about 53,333 square meters), our factory has a 60-person team including 4 professional engineers, ensuring stable production and technical support.
2. Focusing on bearing production for 25 years, quality is our only guarantee3. Wafangdian Bearing Factory was...
