7009 CE/HCP4AQBCA
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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7009 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7009 CE/HCP4AQBCA is a high-precision quadruplex angular contact ball bearing designed for the most demanding applications. This metric system bearing is characterized by its extra light preload (Class A) and back-to-back matched arrangement of four bearings, delivering exceptional rotational accuracy and system rigidity. Its ability to handle combined loads (radial and axial) simultaneously makes it an ideal choice for high-speed spindles and precision machinery requiring maximum stability and minimal runout.
7009 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
- 7009: Basic bearing series with 45mm bore diameter, 75mm outside diameter, and 64mm width.
- C: 15° contact angle, optimized for high-speed applications with significant axial loads.
- E: Optimized internal design for enhanced performance and load capacity.
- HC: Hybrid Ceramic construction, featuring steel rings and ceramic balls for superior high-speed performance and durability.
- P4A: High-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy.
- QBC: Quadruplex Back-to-Back matched set. Four bearings are precision-matched and supplied as a pre-configured set for optimal stiffness and load distribution.
7009 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds (46,000 rpm). Ceramic balls also provide excellent resistance to wear and electrical erosion.
High System Rigidity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system that effectively resists moment loads and maintains precision under heavy combined loads.
Precision & Speed: The P4A tolerance class and phenolic resin cage contribute to smooth, quiet operation at high speeds. The phenolic cage offers excellent strength-to-weight ratio and is suitable for high acceleration and deceleration.
Preload & Accuracy: The extra light preload (Class A) minimizes friction and heat generation while ensuring precise shaft positioning and high rotational accuracy, which is critical for machine tool spindles.
7009 CE/HCP4AQBCA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed CNC milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes and tight tolerances.
- High-Frequency Motors & Spindles: Motors operating at very high rotational speeds.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision stages.
