7216 ACD/P4ATBTB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7216 ACD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
4.38 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
78 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
17.462 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
39150 lbf
Radial static load rating
48600 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7216 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 7216 ACD/P4ATBTB is a precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. This high-performance arrangement is engineered to deliver exceptional system rigidity and superior capacity for handling combined loads, including significant radial and bidirectional axial forces. Manufactured to P4A tolerance class, it guarantees outstanding running accuracy, making it ideal for demanding applications requiring high rotational precision, operational stability, and long-term reliability in a compact envelope.
7216 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7216 | Basic bearing designation: 80 mm bore, 140 mm OD, 26 mm single width. |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class (equivalent to ABEC 7), ensuring minimal runout and vibration. |
| TBT | Specifies a Triplex Back-to-Back matched arrangement of three bearings. |
7216 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The triplex back-to-back (TBT) configuration creates an extremely rigid bearing system, capable of withstanding heavy combined radial and axial loads from both directions. This setup effectively counteracts moment loads, ensuring precise shaft positioning.
- High-Speed Capability: The lightweight and robust phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 28,000 rpm. The 25° contact angle provides an optimal balance between axial load capacity and speed performance.
- Precision and Accuracy: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures smooth, quiet, and vibration-free operation essential for precision machinery.
- Optimized Internal Geometry: The design, featuring 17 precision balls of 17.462 mm diameter, is optimized for even stress distribution and reduced heat generation, enhancing overall service life.
7216 ACD/P4ATBTB Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where maximum rigidity, precision, and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Transmission Systems
- High-Frequency Motors and Spindles
- Industrial Pumps and Compressors requiring high axial stiffness.
- Aerospace and Defense Actuation Systems
