7216 ACD/P4ADBB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7216 ACD/P4ADBB
Basic Information
System of measurement
Metric
Weight
2.92 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
52 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
29925 lbf
Radial static load rating
32175 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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/P4ADBB Bearing Product Overview & Core Advantages
The 7216 ACD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement is preloaded to Light / Class B specifications, delivering superior stability and stiffness. Its primary advantage lies in its ability to support combined loads (radial and axial) simultaneously from both directions, making it ideal for high-precision, high-rigidity machinery where minimal deflection is critical. The P4A tolerance class ensures ultra-precise dimensional and running accuracy for demanding applications.
7216 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7216 ACD/P4ADBB is decoded as follows:
- 7216: Basic series designation (70 series, 80mm bore, 140mm OD).
- AC: Angular Contact design with a 25° contact angle.
- D: Indicates a Duplex (two bearings as a set) configuration.
- P4A: Denotes an ultra-precision tolerance class exceeding ABEC 7/ISO P4 standards.
- DB: Specifies the Back-to-Back mounting arrangement of the duplex set.
- B: Indicates the Light preload level applied to the set.
7216 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid, moment-resisting bearing system, significantly increasing operational stiffness and reducing shaft runout under complex loads.
- Superior Load Capacity: Engineered with a 25° contact angle and optimized internal geometry, this bearing efficiently handles significant combined radial and axial loads from both directions.
- Precision Performance: Manufactured to P4A tolerance class with a phenolic resin cage, it ensures smooth, quiet operation with minimal vibration, suitable for high-speed applications up to 28,000 rpm.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life in a standard lubricated and open configuration.
7216 ACD/P4ADBB Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Spindles for PCB drilling and routing
- Precision Gearboxes and Robotic Drives
- Medical Equipment and Analytical Instruments
- Aerospace Actuation Systems
