71906 CE/HCP4AQGA
Hybrid Ceramic Super Precision Bearings
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71906 CE/HCP4AQGA Bearing Product Overview & Core Advantages
The 71906 CE/HCP4AQGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This metric series bearing features a 15° contact angle and is supplied as part of a universally matchable (SU) set of 4 bearings, enabling simplified assembly of preloaded arrangements. Its core advantages include superior running accuracy due to its P4A tolerance class, high-speed capability facilitated by a phenolic cage and ceramic balls, and the ability to accommodate combined radial and axial loads efficiently.
Model Code Breakdown
- 71906: Basic series designation (Ultra-light series, 30mm bore, 47mm OD).
- CE: Indicates a 15° contact angle and enhanced internal design.
- HC: Signifies the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Denotes a very high precision tolerance class, exceeding ABEC 7/ISO P4.
- QGA: Specifies an Extra light preload (Class A) and Universal Matchable (SU) pairing.
71906 CE/HCP4AQGA Bearing Structural Features & Performance Benefits
High-Precision & Rigidity: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration, providing a stable and rigid platform for precise spindle applications.
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling operation at a limiting speed of 100,500 rpm.
Extended Service Life & Reliability: Hybrid ceramic construction offers excellent wear resistance, reduced heat generation, and extended lubrication life. The bearings are pre-lubricated for immediate use.
Universal Matching & Simplified Assembly: As Universal Matchable (SU) bearings, any two bearings from the set can be paired in a back-to-back, face-to-face, or tandem arrangement to achieve the desired preload and stiffness without selective mounting.
71906 CE/HCP4AQGA Bearing Typical Application Areas
This high-precision bearing is ideally suited for applications where extreme rotational accuracy and high speeds are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and avionics.
- Medical Equipment: Dental handpieces, high-speed centrifuges, and imaging scanners.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
