S7007 CDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7007 CDGB/P4A Bearing Product Overview & Core Advantages
The S7007 CDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing with Universal Matchable (SU) designation, it can be precisely paired with identical bearings to form optimized sets. Its P4A tolerance class ensures ultra-precise dimensions and runout control, making it ideal for high-speed spindles and other precision machinery. The combination of a 15° contact angle and light preload (Class B) provides superior handling of combined loads (radial and axial) while maintaining high-speed capability.
S7007 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7007 | Basic bearing series, indicating a metric, single-row angular contact ball bearing with a 35mm bore. |
| C | Specifies a 15° contact angle. |
| DG | Indicates a Universal Matchable (SU) bearing. Two such bearings can be mounted in a DB (back-to-back) or DF (face-to-face) arrangement. |
| B | Denotes a Light Preload / Class B. |
| P4A | Signifies an ABEC 7 / ISO P4A super-precision tolerance class, offering extremely tight dimensional and running accuracy. |
S7007 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with a phenolic resin cage, this bearing provides exceptional dimensional stability and minimal runout, which is critical for high-precision applications.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined radial and axial loads simultaneously. The light preload eliminates internal clearance, enhancing shaft rigidity and system accuracy.
- Superior High-Speed Performance: The lightweight and robust phenolic cage, combined with grease lubrication, allows for a high limiting speed of 56,000 rpm, making it an excellent high-speed bearing solution.
- Matched Set Versatility: The Universal Matchable (SU) feature allows for the creation of precisely matched bearing sets (up to 3 bearings) to achieve specific preload and stiffness requirements without selective assembly.
S7007 CDGB/P4A Bearing Typical Application Areas
The S7007 CDGB/P4A is engineered for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Robotics: High-accuracy joints and rotary actuators.
