7003 ACD/P4ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7003 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7003 ACD/P4ATBTC is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This matched bearing set features a triplex back-to-back (TBT) arrangement, providing superior stability under combined loads including radial and axial forces. Manufactured to P4A tolerance class, it delivers ultra-precise rotational accuracy and is preloaded to moderate (Class C) specifications for optimal stiffness in demanding operational conditions. Its compact design with a 17 mm bore, 35 mm outside diameter, and 30 mm width makes it ideal for space-constrained, high-speed machinery.
7003 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High-Precision Tolerance Class (exceeding ABEC 7) |
| TBT | Triplex Back-to-Back Matched Arrangement (set of 3 bearings) |
| C | Moderate Preload Class |
7003 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The triplex back-to-back arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, making it ideal for applications requiring maximum system stiffness.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions. The dynamic load rating of 3150 lbf ensures reliable performance under demanding conditions.
Precision Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
High-Speed Capability: The phenolic cage provides excellent dimensional stability at high speeds, contributing to the bearing's limiting speed of 70,000 rpm while reducing friction and heat generation.
Material Excellence: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance across the operating temperature range of -30°C to 110°C.
7003 ACD/P4ATBTC Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding applications
- Precision Instrumentation - Measuring devices and laboratory equipment requiring ultra-precise rotation
- High-Speed Motors - Servo motors and spindle drives demanding high rigidity and accuracy
- Robotics - Joint and arm mechanisms requiring precise motion control and load capacity
- Aerospace Components - Guidance systems and auxiliary power units where reliability is critical
