7202 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 CDGB/P4A Bearing Product Overview & Core Advantages
The 7202 CDGB/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and runout control. Its 15° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously. As a Universal Matchable (SU) bearing, it can be preloaded in pairs to achieve increased stiffness and precise shaft positioning, making it ideal for high-speed spindles and other demanding machinery.
7202 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and 11mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and combined load capacity. |
| DGB | Indicates a Universal Matchable (SU) bearing. Two bearings can be mounted in a "back-to-back" (DB) arrangement to share loads and increase system rigidity. |
| P4A | Denotes an ABEC 7 / P4 precision class with enhanced dimensional and running accuracy tolerances for superior performance. |
7202 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and chrome steel construction provide robust support for combined radial and axial loads. The universal matching capability allows for paired setups that significantly enhance overall system stiffness.
- High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 95,000 rpm. The 15° contact angle further supports stable operation at high rotational velocities.
- Precision Engineering: Manufactured to P4A tolerance standards with tight bore, OD, and width tolerances, ensuring minimal runout and vibration for applications demanding extreme accuracy.
- Optimized Internal Geometry: Features 10 precision balls with a diameter of 6.35mm, carefully sized and spaced to maximize load distribution and dynamic load rating (1667 lbf).
7202 CDGB/P4A Bearing Typical Application Areas
The 7202 CDGB/P4A is engineered for high-performance machinery where precision and speed are critical. Its primary applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and other high-speed precision equipment.
- Precision Instrumentation: Used in measuring devices, optical scanners, and laboratory equipment.
- High-Speed Motors and Drives: Ideal for servo motors, turbochargers, and other applications requiring minimal friction and high rotational accuracy.
- Robotics and Automation: Provides reliable, precise motion control in robotic arm joints and precision actuators.
