7016 ACDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7016 ACDGB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.71 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
125 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
20
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14040 lbf
Radial static load rating
13162 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7016 ACDGB/HCP4A Bearing Product Overview & Core Advantages
The 7016 ACDGB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding the highest levels of precision and performance. Positioned in the P4A super-precision tolerance class, it is designed to provide exceptional running accuracy, high rigidity, and reliable operation under high-speed conditions. A key feature is its Universal Matchable (SU) designation, allowing it to be supplied in sets of three for preloaded arrangements, delivering superior system rigidity and rotational stability. Its construction with a phenolic cage and ceramic balls contributes to its high limiting speed and ability to handle combined loads efficiently.
7016 ACDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7016 | Basic bearing series, indicating a metric 80 mm bore, 125 mm OD, and 22 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Duplex arrangement, Back-to-Back (DB). This bearing is ground for a specific preload and is part of a matched set. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls (typically Silicon Nitride) which reduce friction, heat generation, and allow for higher speeds. |
| P4A | The tolerance class, denoting super-precision levels with very tight dimensional and running accuracy tolerances. |
7016 ACDGB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-precision spindles. The 25° contact angle and the ability to be mounted in a back-to-back (DB) configuration provide high moment rigidity and excellent operational stability.
- Superior Speed and Thermal Performance: The combination of a lightweight phenolic resin cage and ceramic balls significantly reduces centrifugal forces and friction, enabling a very high limiting speed of 28,000 rpm. Hybrid construction also mitigates thermal expansion mismatches.
- Enhanced Load Capacity: The angular contact design is optimized to support substantial combined loads (radial and axial). The dynamic and static load ratings ensure long service life under demanding conditions.
- Matched Set Advantage: Supplied as a Universal Matchable (SU) set of three, these bearings are pre-ground to achieve a specific light preload (Class B) when mounted together, eliminating the need for complex adjustments and ensuring consistent, high-performance operation from the start.
7016 ACDGB/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small tool spindles.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
