7211 ACD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7211 ACD/HCP4ADBC Bearing Product Overview & Core Advantages
The 7211 ACD/HCP4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This metric system bearing features a back-to-back (DB) matched arrangement of two bearings, providing superior stability and the ability to withstand combined loads, including significant radial and bidirectional axial loads. Manufactured to a P4A tolerance class, it guarantees high running accuracy. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-performance machinery.
7211 ACD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls. |
| P4A | Specifies the high precision tolerance class. |
| DB | Duplex Back-to-Back matched arrangement. |
| C | Indicates a moderate preload. |
7211 ACD/HCP4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity and Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and ensures precise shaft positioning.
- Superior Load Capacity: Engineered with a 25° contact angle, this bearing is optimized to handle combined radial and axial loads simultaneously.
- Enhanced High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 34,000 rpm.
- Precision Operation: Manufactured to P4A tolerance standards with tight bore and outside diameter tolerances, this bearing ensures minimal runout and vibration for smooth, accurate rotation.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ready for installation and initial operation.
7211 ACD/HCP4ADBC Bearing Typical Application Areas
This high-precision, high-rigidity bearing is suited for advanced machinery where accuracy and reliability are paramount. Key applications include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics and Automation Equipment
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (e.g., High-speed handpieces)
- Aerospace Actuation Systems
