S71910 ACDGA/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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S71910 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71910 ACDGA/P4A is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a single bearing from a Universal Matchable (SU) set, it is designed to accommodate combined radial and axial loads simultaneously. Its defining characteristics include an extra light preload (Class A) and a P4A tolerance class, ensuring exceptional running accuracy, minimal heat generation, and outstanding operational reliability in precision machinery.
Model Code In-Depth Analysis
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing. |
| 7 | Indicates an angular contact design. |
| 1910 | Specifies the bearing dimensions: 50mm bore, 72mm OD, 12mm width. |
| AC | Angular Contact with a 25° contact angle. |
| DGA | Universal Matchable (SU) bearing. "A" suffix denotes Extra Light Preload. |
| P4A | Specifies the tolerance class, which is superior to ABEC-7/ISO P4, ensuring extremely tight dimensional and running accuracy tolerances. |
S71910 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized 25° contact angle and precision-ground raceways enable the bearing to support significant combined loads. The extra light preload eliminates internal clearance, resulting in superior shaft positioning accuracy and system stiffness.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 34,000 rpm. The grease lubrication is specially selected for high-speed applications.
Sealed and Pre-Lubricated: As a sealed bearing, it is protected from contamination and is pre-lubricated with high-performance grease, making it ready for immediate use and suitable for applications where re-lubrication is difficult.
Precision Engineering: Manufactured to P4A tolerance class with chrome steel rings and balls, this bearing guarantees low noise, low vibration, and a long service life under demanding conditions.
S71910 ACDGA/P4A Bearing Typical Application Areas
The S71910 ACDGA/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (for milling, grinding, and turning)
- High-Frequency Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Handpieces
- High-Speed Compressors and Pumps
