7016 ACDGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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7016 ACDGA/HCP4AL Bearing Product Overview & Core Advantages
The 7016 ACDGA/P4A is a single-row angular contact ball bearing engineered for the most demanding high-precision applications. Its defining characteristic is the P4A super-precision tolerance class, ensuring exceptional running accuracy and rotational stability. The bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve optimal system rigidity. Featuring a 25° contact angle and ceramic balls, it is optimized to handle significant combined loads (radial and axial) while enabling superior high-speed performance. This combination of precision, rigidity, and speed makes it an ideal component for advanced machinery requiring the highest levels of accuracy and reliability.
Model Code Breakdown
- 7016: Basic designation indicating a metric, single-row angular contact ball bearing with an 80mm bore and 125mm outside diameter.
- A: Denotes a 25° contact angle, optimized for carrying high axial loads.
- CD: Signifies a Universal Matchable (SU) bearing. Two bearings can be paired face-to-face, back-to-back, or in tandem to adjust preload and rigidity.
- GA: Indicates the preload group, specifically "Extra Light / Class A" preload.
- P4A: Specifies the tolerance class. P4A is a super-precision grade with extremely tight tolerances on bore, outside diameter, and width for superior running accuracy.
7016 ACDGA/HCP4AL Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A super-precision standards, this bearing guarantees minimal runout and vibration, which is critical for applications like machine tool spindles.
Enhanced Speed & Performance: The use of a lightweight phenolic resin cage and low-friction silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces and heat generation. This allows for a very high limiting speed of 28,000 rpm.
Superior Rigidity & Load Capacity: The 25° contact angle and universal matching design enable the bearing to be set up in preloaded arrangements, dramatically increasing system stiffness to handle heavy combined loads.
Reduced Thermal Expansion: Ceramic balls have a lower coefficient of thermal expansion than steel, helping to maintain preload and precision across the operating temperature range (-30°C to 110°C).
7016 ACDGA/HCP4AL Bearing Typical Application Areas
The 7016 ACDGA/P4A is specified for high-performance machinery where precision, speed, and rigidity are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Articulated arms and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
