7008 ACD/P4AQGC
7000 Series Super Precision Angular Contact Ball Bearings
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7008 ACD/P4AQGC Bearing Product Overview & Core Advantages
The 7008 ACD/P4AQGC is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and exceptional running accuracy. Operating under the stringent P4A tolerance class, this bearing is engineered to handle combined loads efficiently, accommodating significant axial loads in one direction alongside radial loads. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, making it a versatile and highly reliable component for high-speed and high-precision machinery.
7008 ACD/P4AQGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series, indicating a 40 mm bore, 68 mm OD, and 60 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a Moderate Preload (Class C) for optimal rigidity and minimal deflection. |
| /P4A | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy limits. |
| QGC | Indicates the bearing is factory lubricated with a specific grease suitable for the specified temperature range. |
7008 ACD/P4AQGC Bearing Structural Features & Performance Benefits
High Rigidity and Precision: Manufactured from Chrome Steel with a Phenolic cage, this bearing offers high dimensional stability and is capable of operating at a limiting speed of 56,000 rpm. The 25° contact angle and moderate preload are optimized to provide high system rigidity, reducing vibration and ensuring precise shaft positioning.
Superior Load Capacity: With a dynamic load rating of 9518 lbf and a static load rating of 9338 lbf, the 7008 ACD/P4AQGC is built to handle significant combined radial and axial loads.
Universal Matching Capability (SU): This feature allows bearings to be mounted in pairs or sets (up to 4 in a matched set) in a back-to-back, face-to-face, or tandem arrangement. This provides exceptional design flexibility to achieve the exact preload and stiffness required for the application.
Ready-to-Install Performance: The bearing is supplied lubricated and open, making it ready for immediate installation into sealed housings or systems with centralized lubrication.
7008 ACD/P4AQGC Bearing Typical Application Areas
The 7008 ACD/P4AQGC is ideally suited for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Motors and Spindle Drives
- Precision Grinding Equipment
- Robotic Arms and Automation Systems
- Medical and Dental Equipment
- Aerospace Actuation Systems
