71910 CDGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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71910 CDGC/HCP4A Bearing Product Overview & Core Advantages
The 71910 CDGC/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, this bearing excels under high-speed operation and complex load conditions. Its defining feature is the ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The use of a ceramic ball and phenolic cage construction contributes to lower friction, reduced weight, and superior performance at high rotational speeds, making it an ideal solution for high-reliability, precision machinery.
71910 CDGC/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing series and size designation (50mm bore, 72mm OD). |
| C | Specifies a 15° contact angle, optimized for high-speed performance. |
| DG | Indicates a Universal Matchable (SU) bearing, designed to be paired in a set. |
| C | Denotes a Moderate Preload (Class C) for enhanced rigidity and reduced deflection. |
| HC | Refers to the Hybrid Ceramic construction (steel rings with ceramic balls). |
| P4A | Specifies the high-precision tolerance class, exceeding ABEC 7 standards. |
71910 CDGC/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
- Phenolic Resin Cage: This lightweight, high-strength cage material offers excellent dimensional stability and low friction, contributing to the bearing's high limiting speed of 46,000 rpm.
- Optimized Preload: The factory-set moderate preload (Class C) ensures high system rigidity, minimizes axial and radial play, and improves positional accuracy without requiring adjustment during installation.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be universally paired with other SU bearings in any combination to form a pre-loaded duplex set, simplifying procurement and assembly for complex arrangements.
- High-Precision Grinding: Manufactured to P4A tolerance class, this bearing guarantees extremely tight running accuracy, low noise, and smooth operation critical for precision spindles.
71910 CDGC/HCP4A Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where speed, precision, and rigidity are paramount. Key application fields include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- Medical Equipment: Dental handpieces, high-speed centrifuges, and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
