S71916 ACE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71916 ACE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.62 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
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7898 lbf
Radial static load rating
7538 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S71916 ACE/HCP4ADBA Bearing Product Overview & Core Advantages
The S71916 ACE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This duplex back-to-back (DB) matched set features a P4A tolerance class and is preloaded to Extra Light (Class A), ensuring minimal runout and superior rotational accuracy. Its primary advantage lies in its ability to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it ideal for high-precision, high-rigidity spindles and machinery. The use of ceramic balls and a phenolic cage further enhances its performance in high-speed applications.
S71916 ACE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The S71916 ACE/HCP4ADBA model code provides detailed technical specifications:
- S7: High-precision bearing series
- 1916: Standard size designation (80mm bore, 110mm OD, 32mm width)
- ACE: Specific internal design and contact angle (25°)
- HC: Hybrid Ceramic (steel rings with ceramic balls)
- P4A: Precision tolerance class exceeding ABEC 7
- DB: Duplex Back-to-Back mounting arrangement
- A: Extra Light preload
S71916 ACE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and handles combined radial and axial loads from both directions. The 25° contact angle is optimized for axial load capacity.
- Superior High-Speed Performance: The hybrid ceramic design with silicon nitride balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (28,000 rpm). The lightweight phenolic cage ensures stability and reduced friction at high velocities.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and minimal vibration.
- Sealed & Pre-Lubricated: The bearing is sealed and pre-lubricated with grease, offering protection from contaminants and providing maintenance-free operation within the specified temperature range of -30°C to 110°C.
S71916 ACE/HCP4ADBA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where precision, speed, and rigidity are critical:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Robotics: Arm joints and high-accuracy positioning systems
- Medical Equipment: Dental handpieces, surgical power tools, and imaging scanners
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment
- High-Frequency Motors & Spindles: PCB drilling spindles and semiconductor manufacturing equipment
