S71915 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71915 ACD/P4A Bearing Product Overview & Core Advantages
The S71915 ACD/P4A is a precision angular contact ball bearing designed for high-performance applications requiring exceptional accuracy and reliability. Engineered to a P4 (ABEC-7) tolerance class, this bearing excels at simultaneously handling combined radial and axial loads due to its 25° contact angle. Its compact design, featuring a 75mm bore and 16mm width, makes it ideal for space-constrained, high-speed spindles and other precision machinery where high rigidity and rotational accuracy are paramount.
S71915 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel Bearing Components |
| 7 | Angular Contact Bearing Type |
| 1915 | Dimension Series (15mm OD, 19mm width series) |
| ACD | 25° Contact Angle, High Precision Design |
| P4 | ABEC-7 Precision Tolerance Class |
| A | Preload Class (Light Preload) |
S71915 ACD/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The optimized internal geometry and 25° contact angle provide superior stiffness, enabling the bearing to effectively support combined loads (7605 lbf dynamic, 7988 lbf static). This makes it exceptionally stable under complex force conditions.
High-Speed Performance: The lightweight, durable phenolic resin cage minimizes centrifugal forces and ensures stable operation at high rotational speeds, with a limiting speed of 10,000 rpm. This is critical for high-speed spindle applications.
Precision & Longevity: Manufactured to P4 precision tolerances with chrome steel rings and balls, this bearing guarantees minimal runout and consistent performance. It comes pre-lubricated for immediate use and reliable operation within a temperature range of -30°C to 110°C.
S71915 ACD/P4A Bearing Typical Application Areas
The S71915 ACD/P4A is ideally suited for demanding applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindle Drives
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
- Aerospace Instrumentation and Control Systems
