71916 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71916 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The **71916 ACEGA/HCP4A** is a **high-precision angular contact ball bearing** designed for applications demanding exceptional accuracy and performance. As a **single bearing** with **extra light preload (Class A)**, it delivers superior rotational precision and minimal friction. Its **ceramic ball** construction enables outstanding **high-speed capabilities** up to 17,000 rpm, while the **phenolic cage** ensures smooth operation and reduced weight. This bearing is **universally matchable (SU)**, allowing for flexible arrangement in sets of three to handle complex **combined loads** effectively. Engineered to **P4A tolerance class**, it guarantees the dimensional and running accuracy required for the most demanding **high-rigidity** applications.
71916 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71916 | Basic Bearing Series & Size | Denotes a metric, single-row angular contact bearing with an 80mm bore, 110mm OD, and 16mm width. |
| AC | Angular Contact | Optimized to support combined radial and axial loads. |
| EGA | Contact Angle & Preload | Specifies a 25° contact angle and Extra Light (Class A) preload for high precision and low running torque. |
| HC | Hybrid Ceramic | Indicates the use of ceramic balls, which provide higher speed, reduced weight, and longer service life. |
| P4A | Tolerance Class | Signifies a super-precision bearing with extremely tight dimensional and running accuracy tolerances. |
71916 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (17,000 rpm), providing electrical insulation, and offering superior performance in lubricant-starved conditions.
- Precision Phenolic Cage: The lightweight and robust phenolic resin cage contributes to lower vibration, quieter operation, and excellent performance at high rotational speeds.
- Optimized Contact Angle & Preload: The 25° contact angle is ideal for supporting substantial axial loads in one direction along with radial loads. The factory-set extra light preload (Class A) eliminates internal clearance, resulting in enhanced shaft rigidity and precise rotational accuracy from the moment of installation.
- Super-Precision P4A Tolerances: Manufactured to the stringent P4A tolerance class, this bearing ensures minimal runout and consistent performance, which is critical for applications where positioning accuracy is paramount.
- Universal Matching (SU): Designed as a universally matchable bearing, multiple 71916 ACEGA/HCP4A bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) to create a pre-loaded set capable of handling complex load conditions and moments.
71916 ACEGA/HCP4A Bearing Typical Application Areas
The 71916 ACEGA/HCP4A is engineered for high-performance machinery where speed, precision, and rigidity are non-negotiable. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary tables.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: For PCB drilling, dental handpieces, and small tooling.
