7000 CD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7000 CD/P4A Bearing Product Overview & Core Advantages
The 7000 CD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and exceptional rotational accuracy. Engineered to P4 (ABEC-7) tolerance class, this bearing is optimized to handle combined loads, efficiently supporting significant radial loads and axial loads in one direction simultaneously. Its 15° contact angle provides an excellent balance between axial load capacity and speed capability. Pre-lubricated and featuring a phenolic resin cage, it is ready for high-speed operation up to 110,000 rpm, making it an ideal choice for high-speed spindles and other precision machinery.
7000 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- 7000: Basic series designation for a metric, single-row angular contact ball bearing.
- C: Indicates a 15° contact angle, optimized for high-speed applications.
- D: Signifies that the bearing is supplied with a preload for enhanced rigidity and precise shaft positioning.
- P4: Denotes a high-precision tolerance class (equivalent to ABEC-7), ensuring minimal runout and superior running accuracy.
- A: Specifies that the bearing's internal geometry and tolerances are optimized for a 30° contact angle, though this specific model uses a 15° angle for its performance balance.
7000 CD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with an available preload, this bearing delivers exceptional running accuracy and system stiffness, minimizing deflection under load.
- Superior Load Capacity: The angular contact design enables it to withstand substantial combined radial and axial loads.
- High-Speed Performance: The lightweight and robust phenolic resin cage guides the balls effectively, reducing centrifugal forces and friction, which is critical for achieving the high limiting speed of 110,000 rpm.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and a long operational lifespan.
- Wide Temperature Range: Suitable for operation in a temperature range from -30°C to 110°C.
7000 CD/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpieces
- Aerospace Instrumentation
