71916 ACD/P4ATBTB
71900 Series Super Precision Angular Contact Ball Bearings
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71916 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 71916 ACD/P4ATBTB is a high-precision angular contact ball bearing supplied as a matched triplex set in a back-to-back (TBT) arrangement. Engineered for superior rigidity and exceptional running accuracy under combined radial and axial loads, this bearing is designed for demanding applications requiring high rotational speeds and precise shaft positioning. Its P4A tolerance class and light preload (Class B) ensure optimal performance in high-precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Basic bearing series and size designation (80mm bore, 110mm OD) |
| ACD | 25° Contact Angle design |
| P4A | High Precision Tolerance Class (exceeding ABEC 7) |
| TBT | Triplex Back-to-Back matched set arrangement |
71916 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back configuration creates a highly rigid bearing system capable of withstanding substantial combined loads and moment loads. The 25° contact angle provides excellent axial load carrying capacity in both directions.
Precision Performance: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring minimal runout and vibration for precise rotational accuracy.
High-Speed Capability: The phenolic cage offers reduced weight and excellent sliding properties, contributing to the bearing's ability to achieve limiting speeds of 17,000 rpm while maintaining stability.
Optimized Internal Geometry: With 27 precision balls of 9.525mm diameter, the bearing provides balanced stress distribution and smooth operation under high-speed conditions.
71916 ACD/P4ATBTB Bearing Typical Application Areas
This precision bearing set is ideally suited for applications requiring high rigidity, speed, and accuracy, including:
- Machine Tool Spindles (high-speed milling, grinding, and turning centers)
- Precision Gearboxes and transmission systems
- High-Frequency Motors and spindle drives
- Aerospace Positioning Systems and flight control mechanisms
- Medical Equipment (high-speed dental handpieces, surgical tools)
- Robotic Arm Joints and precision automation equipment
