7008 ACD/P4ATBTC
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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7008 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7008 ACD/P4ATBTC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back matched set provides superior stiffness and stability under complex loading conditions. Engineered to P4A tolerance class with a moderate preload (Class C), it delivers reliable performance in high-precision machinery. Its optimized design enables effective handling of combined radial and axial loads, making it ideal for applications where positional accuracy and minimal deflection are critical.
7008 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | 25° Contact Angle | Optimized for axial load capacity while maintaining radial performance |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for precision applications |
| TBT | Triplex Back-to-Back Arrangement | Enhanced moment stiffness and thermal stability in matched set configuration |
7008 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity Construction: The triplex back-to-back arrangement of three bearings creates an exceptionally rigid bearing system that minimizes deflection under heavy loads and moment forces. This configuration provides superior stability for precision applications.
Enhanced Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads. The dynamic load rating of 7762 lbf and static load rating of 6975 lbf ensure reliable performance in demanding conditions.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic cage material and optimized internal design contribute to excellent high-speed performance, with a limiting speed of 56,000 rpm.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring durability and long service life in industrial environments.
7008 ACD/P4ATBTC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring exceptional rigidity
- Precision Gearboxes: Industrial transmission systems demanding accurate positioning and load capacity
- Robotic Systems: High-accuracy robotic arms and automation equipment
- Aerospace Components: Flight control systems and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical tools
- Test and Measurement Instruments: Precision rotary tables and coordinate measuring machines
