7002 ACDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7002 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7002 ACDGB/P4A is a single row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Positioned in the P4A super-precision tolerance class, this bearing is designed to handle significant combined loads (radial and axial) simultaneously, with its 25° contact angle optimizing axial load capacity. Its compact design, featuring a 15 mm bore and 9 mm width, makes it ideal for space-constrained, high-speed spindles and other precision machinery demanding superior running accuracy and high rigidity.
7002 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series designation, indicating a 15mm bore and 32mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Universal Matchable (SU) bearing. Two bearings can be mounted in a back-to-back (DB) arrangement to increase rigidity and moment load capacity. |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7 standards, for applications requiring minimal runout and vibration. |
7002 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Precision and Rigidity: Manufactured to P4A tolerance standards, this bearing ensures minimal radial and axial runout, contributing to superior system stability and accuracy. The 25° contact angle provides an excellent balance between radial and axial load capacity, enhancing overall rigidity.
Optimized for High-Speed Operation: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 95,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
Universal Matching Capability: As a Universal Matchable (DGB) bearing, it can be precisely paired with another identical bearing in a back-to-back arrangement. This setup significantly increases system rigidity and enables the bearing set to withstand moment loads.
Premium Material Construction: Made from high-grade chrome steel for both rings and balls, the bearing offers high fatigue life and durability under demanding operating conditions.
7002 ACDGB/P4A Bearing Typical Application Areas
The 7002 ACDGB/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Spindles for PCB drilling and routing
- High-frequency Main Spindles
- Robotic Arm Joints and Precision Gearboxes
- Medical and Dental Handpiece Drives
