S71914 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71914 CD/HCP4A Bearing Product Overview & Core Advantages
The S71914 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads—significant radial forces and substantial thrust loads in one direction. Its core advantages stem from a P4 (ABEC-7) tolerance class, a phenolic resin cage, and ceramic ball construction, delivering superior high-speed capability, thermal stability, and extended service life in compact, rigid assemblies.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing series. |
| 71914 | Standard designation for a high-precision angular contact bearing with a 70mm bore, 100mm OD, and 16mm width. |
| CD | Indicates a 15° contact angle and a high rigidity, matched preload for maximum system stiffness. |
| HC | Signifies the use of hybrid ceramic balls (Silicon Nitride), offering reduced weight, lower friction, and higher speed limits. |
| P4 | Specifies the P4 (ABEC-7) tolerance class, ensuring extremely tight dimensional and running accuracy. |
| A | Denotes that the bearing is pre-lubricated and sealed. |
S71914 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and allows for a limiting speed of 16,000 rpm. This construction also provides excellent electrical insulation and corrosion resistance.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers superior guidance for the ceramic balls, contributing to smooth operation, low vibration, and exceptional performance at high rotational speeds.
- Optimized Preload (CD): The bearing is supplied with a pre-set preload, which eliminates internal clearance. This results in high system rigidity, precise shaft positioning, and reduced noise and vibration under load.
- Sealed & Pre-lubricated Design: The sealed construction protects against contamination, while the factory-applied lubrication ensures immediate, reliable operation, making it suitable for maintenance-free or difficult-to-service applications within its specified temperature range.
S71914 CD/HCP4A Bearing Typical Application Areas
The S71914 CD/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors & Spindles: Motors for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: CT scanner gantries and high-speed centrifuges.
