7007 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7007 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7007 ACD/P4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back matched set delivers superior performance under combined radial and axial loads. Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. The phenolic cage and optimized 25° contact angle contribute to its outstanding high-speed capability and operational stability.
7007 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with 25° contact angle |
| P4A | High precision tolerance class (superior to ABEC 7) |
| TBT | Triplex Back-to-Back arrangement (3 bearings matched set) |
| A | Extra light preload classification |
7007 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The triplex back-to-back configuration creates an exceptionally rigid bearing system capable of handling significant combined loads from multiple directions. This arrangement provides superior moment stiffness compared to single bearings.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 56,000 rpm. The optimized 25° contact angle balances axial and radial load capacity while maintaining high-speed capability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for precision applications.
Thermal Stability: The phenolic cage material provides good thermal characteristics, maintaining dimensional stability across the operating temperature range of -30°C to 110°C.
7007 ACD/P4ATBTA Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and grinding spindles
- Precision Robotics - Joint bearings requiring high rigidity and accuracy
- Aerospace Systems - Guidance systems and flight control mechanisms
- Medical Equipment - High-speed dental handpieces and surgical tools
- Test & Measurement Instruments - Precision rotary tables and coordinate measuring machines
- Semiconductor Manufacturing - Wafer handling robots and precision positioning stages
