7048 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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7048 CDGA/P4A Bearing Product Overview & Core Advantages
The 7048 CDGA/P4A is a single-row angular contact ball bearing designed for applications requiring exceptional precision and high-speed operation. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 15° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously, while the Extra Light (Class A) preload ensures minimal deflection and smooth operation. The phenolic cage and universal matchable (SU) designation make it ideal for precision spindle arrangements requiring high rigidity and thermal stability.
7048 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Impact |
|---|---|---|
| CDGA | Universal matching bearing with specific contact angle and preload | Enables precise bearing arrangements in pairs for optimal load distribution |
| P4A | High precision tolerance class | Provides superior running accuracy and dimensional stability for precision applications |
7048 CDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and running performance.
Optimized Load Capacity: The 15° contact angle design enables efficient handling of combined radial and axial loads, with dynamic load rating of 77,625 lbf and static load rating of 110,250 lbf.
High-Speed Capability: The phenolic cage and optimized internal geometry allow for limiting speeds up to 7,500 rpm, making it suitable for high-speed spindle applications.
Thermal Stability: Chrome steel construction and phenolic cage material provide excellent dimensional stability across the operating temperature range of -30°C to 110°C.
Precision Matching: As a universal matchable (SU) bearing, it can be paired with another identical bearing without selective matching, simplifying installation and ensuring consistent performance.
7048 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Industrial Pumps - High-speed centrifugal pumps and compressor systems
- Aerospace Systems - Aircraft accessory drives and navigation equipment
- Medical Equipment - High-speed dental handpieces and surgical tools
- Robotics - Precision robot joints and automation system spindles
