7213 ACDGA/P4
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7213 ACDGA/P4 Bearing Product Overview & Core Advantages
The 7213 ACDGA/P4 is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing delivers superior running precision and is universally matchable (SU), allowing for flexible arrangement in sets of three to accommodate complex load requirements. Its 25° contact angle is optimized to handle significant combined loads—both radial and axial—making it an ideal solution for high-speed spindles and precision machinery where reliability and accuracy are paramount.
7213 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7213 | Basic bearing series with 65mm bore, 120mm OD, 23mm width |
| AC | Angular Contact design with 25° contact angle |
| D | High ball complement with 15 balls for increased load capacity |
| GA | Light preload for enhanced rigidity and reduced vibration |
| P4 | High precision tolerance class for exceptional running accuracy |
7213 ACDGA/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: The P4 tolerance class ensures minimal dimensional variation, providing consistent high-precision performance in demanding applications. The extra light preload (Class A) minimizes deflection while maintaining smooth operation.
Enhanced Load Capacity: With a 25° contact angle and 15 high-quality chrome steel balls of 15.875mm diameter, this bearing delivers excellent combined load capacity, capable of handling both radial loads (14,332 lbf dynamic) and substantial axial loads simultaneously.
High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio and reduced friction, contributing to the bearing's impressive limiting speed of 32,500 rpm. This makes it suitable for high-speed spindle applications.
Universal Matching Design: As a universally matchable (SU) bearing, it can be arranged in sets of three with other SU bearings without requiring selective matching, simplifying installation and maintenance while ensuring optimal performance in multi-bearing arrangements.
7213 ACDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling machine spindles requiring exceptional accuracy and rigidity
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus demanding minimal runout and vibration
- High-Speed Motors: Electric motor applications where high rotational speeds and precision are critical
- Aerospace Components: Guidance systems, actuator mechanisms, and other precision aerospace applications
- Medical Equipment: High-speed dental handpieces, surgical tools, and diagnostic imaging systems
