S71913 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71913 ACDGB/P4A Bearing Product Overview & Core Advantages
The S71913 ACDGB/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a single bearing from a universally matchable (SU) set, it excels in handling combined radial and axial loads simultaneously. Its compact design, featuring a 65 mm bore and 13 mm width, offers a high load capacity in a minimal space. Manufactured to the stringent P4A tolerance class, it guarantees superior running accuracy and rotational stability, making it ideal for high-reliability, precision machinery.
S71913 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series with a contact angle of 25°.
- 1913: Standard dimension series; 19 for width series, 13 for bore code (65 mm).
- ACD: 25° contact angle design, optimized for high rigidity and high-speed operation.
- GB: Light preload (Class B), ensuring minimal axial play and precise shaft positioning.
- P4A: Superior tolerance class exceeding ABEC 7, specifying extremely tight dimensional and running accuracy tolerances.
S71913 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized 25° contact angle and robust construction enable the bearing to support significant combined loads. Its high dynamic and static load ratings (4388 lbf and 3600 lbf respectively) ensure long service life under demanding conditions.
Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the precision-ground chrome steel balls and raceways contribute to a high limiting speed of 31,000 rpm. The standard grease lubrication is formulated for stable performance within the specified temperature range.
Precision and Stability: Manufactured to P4A tolerances, this bearing offers extremely tight control over bore, outer diameter, and width dimensions, resulting in exceptional running accuracy, low vibration, and minimal heat generation.
S71913 ACDGB/P4A Bearing Typical Application Areas
The S71913 ACDGB/P4A is ideally suited for high-precision, high-speed applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Instrumentation
