S71902 ACD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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S71902 ACD/P4ADGB Bearing Product Overview & Core Advantages
The S71902 ACD/P4ADGB is a precision double-row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This metric bearing excels at simultaneously handling combined loads (radial and bidirectional axial loads) due to its optimized 25° contact angle and universal matchable (SU) design. Its compact dimensions (15 mm bore, 28 mm OD, 14 mm width) and P4A super-precision tolerance make it ideal for high-rigidity, high-speed spindle arrangements. Pre-loaded as a light preload (Class B) set, it ensures smooth, precise operation with minimal runout.
S71902 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings |
| 1902 | Size designation (15mm bore, 28mm OD) |
| ACD | 25° contact angle, double-row design |
| P4A | Super-precision tolerance class (exceeds ABEC 7) |
| D | Universal matchable (SU) arrangement |
| GB | Grease lubrication with sealed construction |
S71902 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact configuration provides superior stiffness and can handle significant combined loads. With a dynamic load rating of 1390 lbf and static load rating of 810 lbf, it offers robust performance in demanding applications.
Precision & Speed Performance: Manufactured to P4A tolerance class with a phenolic cage and 13 precision balls, this bearing achieves a limiting speed of 95,000 rpm. The optimized 25° contact angle ensures stable operation at high rotational speeds.
Maintenance-Free Operation: The sealed design with factory-applied grease lubrication provides long-term, maintenance-free service across a wide temperature range (-30°C to 110°C). The universal matchable (SU) feature allows for flexible mounting configurations without performance degradation.
S71902 ACD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles - High-speed machining centers and precision grinding machines
- Precision Instrumentation - Measuring devices and laboratory equipment
- High-Speed Motors - Servo motors and spindle drives
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and avionics
