71902 ACD/P4ATBTB
71900 Series Super Precision Angular Contact Ball Bearings
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71902 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 71902 ACD/P4ATBTB is a precision angular contact ball bearing designed for high-performance applications. This triplex back-to-back (TBT) matched set delivers exceptional system rigidity and stability under complex loading conditions. Its P4A tolerance class ensures superior running accuracy, making it ideal for demanding applications requiring high rotational precision and reliable operation.
71902 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High precision tolerance class for superior dimensional and running accuracy |
| TBT | Triplex Back-to-Back arrangement of three matched bearings |
71902 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding combined loads (radial and axial) and moments. The 25° contact angle is optimized for significant axial load carrying capacity.
Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-speed and high-precision applications. The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds.
Optimized for Speed: With a limiting speed of 95,000 rpm and a lightweight phenolic cage, this bearing is engineered for high-speed operation. The pre-lubrication ensures immediate and reliable performance upon installation.
71902 ACD/P4ATBTB Bearing Typical Application Areas
- High-Frequency Spindles for CNC machining centers and precision grinding machines
- High-Speed Machining Centers requiring extreme rigidity and accuracy
- Precision Instrumentation and medical device components
- Robotic Drives and automation systems demanding high positional accuracy
