7048 ACD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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7048 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7048 ACD/P4ADGA is a precision angular contact ball bearing manufactured to P4A tolerance class, delivering exceptional rotational accuracy and dimensional stability. Engineered with a 25° contact angle and configured as a Universal Matchable (SU) pair, this bearing is optimized to handle combined radial and axial loads simultaneously. Its extra light preload (Class A) ensures minimal friction and smooth operation, making it ideal for high-speed applications up to 7,500 rpm. The combination of chrome steel rings and balls with a phenolic cage provides superior durability and performance in demanding precision machinery.
7048 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with 25° contact angle |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| DGA | Universal Matchable (SU) arrangement, pre-lubricated |
7048 ACD/P4ADGA Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration.
High Load Capacity: With dynamic load rating of 118,575 lbf and static load rating of 209,250 lbf, this bearing delivers reliable performance under significant combined loads.
Optimized High-Speed Performance: The phenolic cage and 25° contact angle enable stable operation at speeds up to 7,500 rpm, while the extra light preload reduces friction and heat generation.
Superior Material Construction: Chrome steel rings and balls provide excellent wear resistance and fatigue life, complemented by the lightweight phenolic cage that reduces centrifugal forces at high speeds.
Universal Matching Capability: As Universal Matchable (SU) bearings supplied in matched pairs, they can be mounted in various configurations (back-to-back, face-to-face, or tandem) to suit specific application requirements.
7048 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding machines
- Industrial Pumps - Centrifugal and process pumps requiring high-speed operation
- Precision Gearboxes - Industrial transmission systems demanding accurate positioning
- Aerospace Components - Aircraft auxiliary systems and flight control mechanisms
- Medical Equipment - High-speed dental handpieces and surgical tools
- Robotics - Precision joints and articulation points in industrial robots
