S71924 CD/P4AQBCC
Sealed Super Precision Angular Contact Ball Bearings
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S71924 CD/P4AQBCC Bearing Product Overview & Core Advantages
The S71924 CD/P4AQBCC is a precision quadruplex back-to-back angular contact ball bearing engineered for applications demanding exceptional rigidity and accuracy. This P4A tolerance class metric bearing is designed to simultaneously handle high combined loads (radial and axial) in both directions. Its pre-matched quadruplex back-to-back (QBC) arrangement provides superior system stiffness and rotational precision, making it ideal for high-speed, high-rigidity spindles and other critical machinery where uncompromising performance is required.
S71924 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71924 | Basic bearing designation (19 series, 120mm bore, 165mm OD) |
| CD | 15° contact angle and moderate preload (Class C) |
| P4A | High precision tolerance class exceeding ABEC 7 |
| QBCC | Quadruplex Back-to-Back (QBC) matched set with universal mounting |
S71924 CD/P4AQBCC Bearing Structural Features & Performance Benefits
Exceptional Rigidity & Load Capacity: The quadruplex back-to-back arrangement creates an extremely rigid bearing system capable of withstanding heavy combined loads and moments. With a radial dynamic load rating of 45,675 lbf and static load rating of 82,125 lbf, this bearing delivers reliable performance under demanding conditions.
High-Speed Performance: Featuring a phenolic cage and optimized 15° contact angle, the bearing achieves a limiting speed of 11,000 rpm. The precision-ground chrome steel components ensure smooth operation at high rotational velocities.
Pre-Configured Precision: As a factory-matched set of four bearings with P4A tolerance class, this arrangement eliminates complex mounting procedures and ensures consistent, predictable performance with bore and outside diameter tolerances of -0.004mm to 0.
Sealed & Lubricated Design: The sealed construction with grease lubrication provides contamination protection and long-term reliability across a temperature range of -30°C to 110°C.
S71924 CD/P4AQBCC Bearing Typical Application Areas
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Rotary Tables - Indexing and positioning systems
- High-Rigidity Spindle Systems - Where maximum stiffness is critical
- Industrial Robotics - Precision joint and arm applications
- Aerospace Test Equipment - Precision rotating fixtures and simulators
