7002 ACD/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
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7002 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 7002 ACD/P4ATBTB is a super-precision angular contact ball bearing designed for the most demanding applications. This matched triplex set in a back-to-back (TBT) arrangement delivers exceptional system rigidity and rotational accuracy. Engineered to a P4A tolerance class, it is optimized for high-speed operation and superior performance under complex combined loads, including radial and axial forces. Its compact design and light preload (Class B) make it an ideal solution for high-precision spindles and machinery requiring maximum stability and minimal runout.
7002 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
- 7002: Standard bearing series designation, indicating a 15mm bore and 32mm outside diameter.
- ACD: Angular Contact design with a 25° contact angle.
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7, ensuring minimal dimensional variation and superior running accuracy.
- TBT: Specifies the bearing arrangement as a Triplex Back-to-Back matched set of three bearings.
- B: Indicates a Light Preload (Class B) applied to the set, which increases rigidity and minimizes axial and radial play.
7002 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
The performance of the 7002 ACD/P4ATBTB is derived from its meticulous construction. The triplex back-to-back configuration creates a highly rigid bearing system that effectively resists moment loads, making it exceptionally stable. The 25° contact angle is optimized for carrying significant axial loads in both directions. The phenolic resin cage ensures smooth operation at high speeds with minimal friction and is well-suited for the limiting speed of 95,000 rpm. Manufactured to P4A precision tolerances with a light preload, this bearing set guarantees low noise, low vibration, and high positional accuracy, which are critical for maintaining machining quality and process consistency.
7002 ACD/P4ATBTB Bearing Typical Application Areas
This high-precision bearing set is specifically engineered for advanced machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Main Spindles
- High-Speed Robotic Drives and Actuators
- Advanced Dental and Medical Handpiece Spindles
- Aerospace Test and Measurement Equipment
