S71916 CD/HCP4ADBC
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71916 CD/HCP4ADBC
Basic Information
System of measurement
Metric
Weight
0.64 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
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13320 lbf
Radial static load rating
17550 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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S71916 CD/HCP4ADBC Bearing Product Overview & Core Advantages
The S71916 CD/HCP4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads from both directions simultaneously. Manufactured to ABEC 7 / P4A tolerance class and featuring ceramic balls and a phenolic cage, this bearing is engineered for high-speed operation, reduced friction, and long-term reliability in precision machinery.
S71916 CD/HCP4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S71916 | Precision angular contact bearing series with 80mm bore | Denotes the bearing type and fundamental bearing dimensions |
| CD | Duplex Back-to-Back arrangement with moderate preload (Class C) | Provides high rigidity and moment load capacity |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Enables higher speeds, reduced weight, and longer service life |
| P4A | ABEC 7 / ISO P4A tolerance class | Ensures exceptional running accuracy for precision applications |
| DBC | Sealed on both sides with special grease | Provides contamination protection and sustained lubrication |
S71916 CD/HCP4ADBC Bearing Structural Features & Performance Benefits
- Enhanced Rigidity & Load Capacity: The duplex back-to-back (DB) configuration creates a rigid bearing system that effectively resists moment loads and supports heavy combined loads. The 15° contact angle is optimized for supporting significant axial loads in both directions.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a high limiting speed of 28,000 rpm. This design minimizes friction and heat generation.
- Precision & Longevity: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width, ensuring smooth, quiet, and accurate operation. The sealed design with pre-applied grease offers a maintenance-free solution for the bearing's operational life.
- Thermal Stability: The phenolic cage and ceramic balls contribute to stable performance across the specified temperature range (-30°C to 110°C), with minimal thermal expansion effects.
S71916 CD/HCP4ADBC Bearing Typical Application Areas
The S71916 CD/HCP4ADBC is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Medical Equipment: Dental handpieces, centrifuges, and imaging device rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors & Spindles: Electric vehicle motors, CNC router spindles.
