71920 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71920 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71920 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-set duplex pair, it delivers superior rigidity and can accommodate combined loads (radial and axial) simultaneously. Manufactured to P4A tolerance class and featuring a phenolic cage, this bearing is engineered for high reliability in the most demanding precision machinery.
Model Code Breakdown
| Suffix | Technical Meaning |
|---|---|
| CE | Contact angle of 15°, optimized for high-speed operation and moderate axial load capacity. |
| P4A | Indicates a high-precision tolerance class with restricted running accuracy and dimensional tolerances beyond ABEC 7. |
| DGA | Specifies a Universal Matchable (SU) duplex set with Extra Light (A) preload, supplied as a ready-to-install, pre-adjusted pair. |
71920 CE/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex pair arrangement creates a highly rigid bearing system capable of supporting significant combined radial and axial loads. The 15° contact angle provides excellent axial load handling while maintaining high-speed capability.
Super-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy.
High-Speed Capability: The phenolic cage offers superior performance at high speeds due to its light weight and excellent sliding properties, contributing to the high limiting speed of 16,000 rpm.
Optimized Internal Geometry: Precision-ground raceways and 24 high-grade chrome steel balls ensure smooth operation, reduced heat generation, and extended service life.
71920 CE/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles for high-speed milling, grinding, and turning centers
- Precision Spindles in PCB drilling and routing equipment
- High-Frequency Motors and servo drives
- Medical Equipment such as dental handpieces and surgical tools
- Aerospace Instrumentation and guidance systems
- Robotic Arm Joints requiring high precision and rigidity
