S7208 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7208 CDGA/P4A Bearing Product Overview & Core Advantages
The S7208 CDGA/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. As a universal matchable bearing supplied in a set of two, it is designed for simplified installation and optimal performance in preloaded arrangements. Its key advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy from its P4A tolerance class, and high-speed capability supported by its phenolic cage and optimized grease lubrication. This makes it an ideal, compact solution for high-rigidity spindle systems.
S7208 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7208 | Bearing series and size designation (40mm bore, 80mm OD). |
| CD | 15° contact angle, optimized for high-speed operation. |
| G | Indicates a universal matchable bearing designed to be paired with another identical bearing. |
| A | Specifies an extra light preload (Class A) for minimal friction and high-speed capability. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7 standards for exceptional running accuracy. |
S7208 CDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The bearing's design, with a 15° contact angle and universal matchability, allows two bearings to be mounted in tandem. This creates a highly rigid bearing set capable of supporting significant combined loads (radial and axial) from both directions.
High-Speed Performance: The lightweight, durable phenolic cage and the extra light preload are critical for achieving the high limiting speed of 41,000 rpm, minimizing centrifugal forces and operational friction.
Sealed and Lubricated for Life: As a sealed bearing, it is protected from contamination. Pre-lubricated with grease, it operates reliably within a temperature range of -30°C to 110°C, offering a maintenance-free service life in many applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, it ensures smooth, quiet, and vibration-free operation.
S7208 CDGA/P4A Bearing Typical Application Areas
The S7208 CDGA/P4A is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing equipment.
- High-Frequency Motors: Spindles for electric motors and generators.
- Medical and Laboratory Equipment: Centrifuges and other precision instruments.
