S71916 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71916 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.32 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7762 lbf
Radial static load rating
8212 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S71916 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71916 ACDGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This sealed bearing features a single, universal matchable design with an extra light preload (Class A), making it ideal for high-speed spindles and precision machinery. Its core strength lies in its ability to handle combined radial and axial loads simultaneously with high rigidity and rotational accuracy. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, establishing it as a superior solution for high-reliability applications.
S71916 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit / Implication |
|---|---|---|
| 719 | Bearing Series (High-Precision, Lightweight) | Optimized for high-speed operation and reduced friction. |
| 16 | Bore Diameter Code (80 mm) | Standardized bearing size identification. |
| AC | 25° Contact Angle | Optimized for handling significant axial loads in one direction. |
| DGA | Universal Matchable (SU), 4-Bearing Set | Allows for precise arrangement in pairs or quadruplex sets to handle complex load conditions. |
| HC | Hybrid Ceramic (Ceramic Balls) | Enables higher limiting speeds, reduced heat generation, and longer life. |
| P4A | High-Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for superior performance. |
S71916 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers operating temperature, and provides electrical insulation, making this a true high-speed bearing.
- High Rigidity & Load Capacity: The 25° contact angle and robust internal geometry provide high rigidity, enabling the bearing to support substantial combined loads (Radial Dynamic: 7762 lbf, Static: 8212 lbf).
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, supporting a limiting speed of 28,000 rpm.
- Sealed & Pre-Lubricated for Longevity: The integral seals protect against contamination, and the factory-applied grease lubrication within a temperature range of -30°C to 110°C ensures immediate operation and long-term, maintenance-free performance.
- Ultra-Precision: Manufactured to P4A tolerance class with extremely tight bore, OD, and width tolerances, this bearing guarantees minimal runout and vibration for the most demanding precision applications.
S71916 ACDGA/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, accuracy, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors & Spindles: Electric motor spindles and high-RPM direct-drive systems.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotational components.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision stages.
