7017 CDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7017 CDGC/P4A Bearing Product Overview & Core Advantages
The 7017 CDGC/P4A is a single-row angular contact ball bearing designed for high-precision and high-speed applications. Engineered to a P4A tolerance class, it offers exceptional dimensional accuracy and running precision. This bearing is preloaded to a Moderate / Class C level, providing optimal rigidity and minimizing deflection under operational loads. Its 15° contact angle is optimized to efficiently handle combined radial and axial loads simultaneously. As a Universal Matchable (SU) bearing, it can be precisely paired with a second bearing to form a pre-loaded duplex set, delivering superior performance and stability in demanding machinery.
7017 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Basic bearing designation indicating a metric series with an 85 mm bore and 130 mm outside diameter. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and combined load capacity. |
| DG | Indicates a Universal Matchable (SU) bearing. Two bearings can be paired in a duplex arrangement (typically DB or DF) to achieve a specific preload. |
| P4A | Denotes an ultra-precision tolerance class with extremely tight limits on bore, outside diameter, and width tolerances for superior running accuracy. |
7017 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class and Moderate preload (Class C) ensure minimal runout and high system rigidity, critical for applications requiring exceptional positional accuracy.
- Optimized Load Capacity: The 15° contact angle effectively supports significant combined radial and axial loads, making it suitable for complex loading conditions.
- High-Speed Capability: The lightweight, high-strength phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 28,000 rpm. The standard lubrication further supports stable high-speed operation.
- Material Integrity: Manufactured from high-grade chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and a long operational lifespan.
- Universal Matching Design: The Universal Matchable (SU) feature allows for the creation of a stiff, pre-loaded bearing set from two single bearings, eliminating internal clearance and enhancing rotational accuracy.
7017 CDGC/P4A Bearing Typical Application Areas
The 7017 CDGC/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application fields include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in high-output industrial and aerospace transmissions.
- High-Frequency Motors and Spindles: Used in CNC machining and PCB drilling equipment.
- Robotic Arms and Precision Actuators: Where accurate motion control and high rigidity are required.
- Medical and Laboratory Equipment: Such as centrifuges and high-speed scanners.
