S7009 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7009 ACEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.23 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2722 lbf
Radial static load rating
1834 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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S7009 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S7009 ACEGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and reliability. As a single bearing with universal matching (SU) designation, it can be flexibly mounted in various preload configurations. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior high-speed performance enabled by its phenolic cage and ceramic balls, and outstanding operational stability due to its P4A super-precision tolerance and Extra Light preload (Class A). This combination makes it ideal for compact, high-rigidity spindles.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| EGA | Precision class and internal clearance/geometry designation. |
| HCP4A | Indicates a Universal Matchable (SU) bearing set with P4A super-precision tolerance and Extra Light preload (Class A). |
S7009 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and robust construction provide high rigidity, effectively supporting combined loads from multiple directions, which is critical for machining accuracy.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 46,000 rpm. This minimizes heat generation and power loss.
- Exceptional Precision and Smooth Operation: Manufactured to P4A super-precision tolerance standards with extremely tight dimensional runouts, this bearing ensures minimal vibration and superior rotational accuracy for ultra-precise applications.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it is supplied from a single batch and can be mounted in tandem, back-to-back, or face-to-face arrangements to achieve specific stiffness and preload requirements.
- Pre-Lubricated & Sealed: The bearing comes pre-lubricated with grease suitable for a wide temperature range (-30°C to 110°C), ensuring immediate operation and long service life.
S7009 ACEGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring the utmost in surface finish and dimensional accuracy.
- High-Frequency Motors and Spindles
- Advanced Robotics: Critical joints and arm assemblies demanding high positional repeatability.
- Medical Equipment: Dental handpieces and high-speed surgical tools.
