S71913 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Ball & Washer Dimensions
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S71913 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71913 ACDGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This single-row bearing features a 25° contact angle and is manufactured to P4A tolerance class, making it ideal for handling combined loads (radial and axial) with high precision. Its extra light preload (Class A) ensures smooth operation with minimal friction, while the universal matchable (SU) design allows for flexible mounting configurations in sets. The bearing is pre-lubricated with grease and sealed for long-term, maintenance-free performance in demanding environments.
S71913 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel (Note: Specification indicates Chrome Steel, but S prefix often denotes Stainless Steel. Please verify material with manufacturer.) |
| 7 | Angular Contact Bearing |
| 19 | Bore Diameter Code (65 mm) |
| 13 | Width Series Code (13 mm) |
| AC | 25° Contact Angle |
| D | High-Precision Design |
| GA | Light Preload |
| P4A | High Precision Tolerance Class (Superior to ABEC 7) |
S71913 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore diameter and outside diameter, this bearing provides exceptional running accuracy and system rigidity, crucial for high-speed applications.
Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant combined radial and axial loads. With a dynamic load rating of 4388 lbf and a static load rating of 3600 lbf, it offers reliable performance under demanding conditions.
High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 31,000 rpm. This makes it an excellent choice for high-speed spindles.
Maintenance-Free Operation: The integrated seals effectively protect against contamination, and the factory-applied grease lubrication ensures consistent performance across a wide operating temperature range of -30°C to 110°C.
S71913 ACDGA/P4A Bearing Typical Application Areas
The S71913 ACDGA/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (CNC milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- Aerospace Instrumentation
