71824 ACDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71824 ACDGB/P4 Bearing Product Overview & Core Advantages
The 71824 ACDGB/P4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. As a single bearing with Universal Matchable (SU) designation, it can be precisely paired with another identical bearing to form a preloaded duplex set (Light preload / Class B), delivering superior rigidity and rotational accuracy. Its optimized 25° contact angle enables it to support significant combined loads—handling both radial and axial forces simultaneously. Manufactured to P4 tolerance class, this bearing is engineered for high-speed operation and is pre-lubricated for immediate use, making it ideal for precision machinery where space is constrained and performance is critical.
71824 ACDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71824 | Basic bearing designation indicating size series and bore diameter (120mm) |
| AC | Angular Contact design with a 25° contact angle |
| D | Two single bearings in a universal matching duplex arrangement |
| GB | Light preload (Class B) for enhanced rigidity and precision |
| /P4 | High precision tolerance class for exceptional running accuracy |
71824 ACDGB/P4 Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 25° contact angle and precision-ground raceways are engineered to efficiently handle combined radial and axial loads, providing stable operation under complex loading conditions.
High-Speed Capability: The phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to the bearing's impressive limiting speed of 16,250 rpm.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls (bore diameter tolerance: -0.004mm to 0), this bearing delivers minimal runout and vibration for superior positioning accuracy.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various configurations (back-to-back, face-to-face, or tandem) to create optimized bearing arrangements for specific application requirements.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and long service life under demanding operating conditions.
71824 ACDGB/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes requiring exceptional rigidity and accuracy
- Precision Gearboxes: Industrial reducers and transmission systems where precise shaft positioning is critical
- High-Speed Motors: Servo motors, spindle motors, and other high-RPM electric motor applications
- Medical Equipment: CT scanners, dental handpieces, and laboratory automation systems demanding quiet, precise operation
- Aerospace Systems: Guidance systems, flight control mechanisms, and auxiliary power units
- Robotics & Automation: Industrial robot joints, CNC rotary tables, and precision positioning stages
