S71909 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71909 CE/HCP4A Bearing Product Overview & Core Advantages
The S71909 CE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, this bearing excels in applications requiring high rotational accuracy and rigidity. Its 15° contact angle is optimized to support combined loads—simultaneously handling significant radial loads and axial loads in one direction. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal choice for high-speed spindles and other precision machinery.
S71909 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7 | Series designation for high-precision angular contact bearings | Indicates a design optimized for precision and high-speed operation. |
| 1909 | Bore Diameter: 45 mm, Outside Diameter: 68 mm, Width: 12 mm | Defines the compact bearing dimensions. |
| CE | Internal design code (contact angle, preload) | Specifies the 15° contact angle and optimized internal geometry for high rigidity. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Provides lower density, reduced friction, and superior performance at high speeds. |
| P4A | Tolerance class P4 (ABEC-7) | Guarantees extremely tight dimensional and running accuracy for precision applications. |
S71909 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces and friction, enabling a higher limiting speed of 34,000 rpm and reduced operating temperature.
- High Rigidity & Preload: The angular contact design and available preload provide superior axial and radial stiffness, ensuring minimal deflection under combined loads for maximum machining accuracy.
- Phenolic Resin Cage: This lightweight and robust cage material offers excellent dimensional stability and low friction at high speeds, contributing to smooth operation and long service life.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for the performance of high-speed spindles.
S71909 CE/HCP4A Bearing Typical Application Areas
The S71909 CE/HCP4A is engineered for high-performance applications where precision, speed, and reliability are paramount. Its key application fields include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and surgical drill spindles.
