7201 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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7201 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 7201 ACDGB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Positioned in the P4A tolerance class, it offers exceptional dimensional accuracy and running precision. A key advantage is its universal matchable (SU) design, allowing bearings to be flexibly paired in various arrangements (face-to-face, back-to-back, or tandem) to achieve optimal stiffness and load handling. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for high-speed spindles and other precision machinery.
7201 ACDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7201 | Basic bearing series and size designation (12mm bore, 32mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Duplex bearing with a Light preload (Class B) and Universal Matchable (SU) configuration. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls for enhanced performance. |
| P4A | Indicates a high-precision tolerance class superior to ABEC 7, ensuring minimal runout and vibration. |
7201 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed & Low Friction: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 95,000 rpm. This makes it a premier high-speed bearing.
- Precision & Rigidity: Manufactured to P4A tolerance standards, this bearing ensures exceptional running accuracy. The 25° contact angle and light preload provide high rigidity and precise shaft positioning, which is critical in machining applications.
- Superior Load Capacity: The angular contact design is optimized to handle combined loads, carrying significant radial loads and thrust loads in one direction simultaneously.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied in sets of three and arranged in any duplex configuration to meet specific application requirements for stiffness and moment load capacity.
7201 ACDGB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors
- Dental Handpieces
- Aerospace Actuators and Control Systems
