S7009 CDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7009 CDGB/P4A Bearing Product Overview & Core Advantages
The S7009 CDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered with a Universal Matchable (SU) design, it can be supplied in pre-matched sets of four for simplified installation and optimal performance in duplex arrangements. Its P4A super-precision tolerance ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery. The bearing is pre-lubricated with grease and features integral sealing, offering reliable, long-term performance.
S7009 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series, indicating a 45mm bore, 75mm OD, and 16mm width. |
| C | 15° contact angle. |
| DG | Universal Matchable (SU) bearing designed for duplex mounting (DB, DF, DT). |
| B | Light preload (Class B). |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
S7009 CDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 15° contact angle enables the bearing to support significant combined loads (radial and axial) simultaneously. The light preload eliminates internal clearance, enhancing system stiffness and positioning accuracy.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 46,000 rpm. This makes the bearing suitable for very high-speed applications.
Precision and Durability: Manufactured to P4A tolerance with chrome steel rings and balls, this bearing guarantees minimal vibration and long service life. The Universal Matchable (SU) feature ensures that bearings from a matched set have closely controlled preload and runout characteristics.
Sealed and Pre-Lubricated: The integral sealing protects against contamination, and the factory-applied grease lubrication ensures immediate operation and reduces maintenance needs within the specified temperature range of -30°C to 110°C.
S7009 CDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, precision grinding, and other high-accuracy machining.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
