7005 ACE/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7005 ACE/P4ADGA Bearing Product Overview & Core Advantages
The 7005 ACE/P4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with an Extra Light preload (Class A) and manufactured to P4A tolerance class, this bearing delivers superior running accuracy and rotational stability. Its 25° contact angle is optimized to handle significant combined loads—simultaneous radial and axial forces—making it an ideal choice for high-rigidity, high-speed systems. The Universal Matchable (SU) design allows for flexible mounting in pairs to accommodate complex load requirements.
7005 ACE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACE | 25° Contact Angle, Extra Light Preload | Optimized for high-speed operation with minimal friction and heat generation |
| P4A | High Precision Tolerance Class | Ensures exceptional dimensional and running accuracy for precision applications |
| DGA | Universal Matchable (SU) Designation | Enables flexible pairing arrangements for optimized load distribution |
7005 ACE/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with 25° contact angle provides excellent resistance to combined radial and axial loads. With a dynamic load rating of 2858 lbf and static load rating of 1755 lbf, this bearing delivers reliable performance under demanding operating conditions.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), ensuring consistent high-precision performance. The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds.
High-Speed Capability: Featuring a limiting speed of 75,000 rpm, the bearing is engineered for high-speed applications. The optimized ball complement (14 balls of 6.35 mm diameter) and precision geometry minimize friction and heat generation.
Material Excellence: Constructed from chrome steel for both rings and balls, providing superior hardness, wear resistance, and durability across the operating temperature range of -30°C to 110°C.
7005 ACE/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers requiring exceptional rotational accuracy and rigidity
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Precision Instrumentation: Medical equipment, measuring devices, and optical systems
- Aerospace Components: Guidance systems, actuators, and auxiliary power units
- Robotics & Automation: Industrial robots, CNC machinery, and precision positioning systems
