71924 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71924 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71924 ACDGA/HCP4A is a single row angular contact ball bearing engineered for applications demanding ultra-high precision and superior performance. Positioned in the P4A super-precision tolerance class, it is designed to handle significant combined loads, primarily thrust loads, with exceptional accuracy and rigidity. Its core advantages stem from its ceramic balls, phenolic resin cage, and universal matchable (SU) design, enabling high-speed operation, reduced friction, and thermal stability. This bearing is pre-lubricated and optimized for use in matched sets of two to support complex load arrangements in the most demanding machinery.
71924 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- 71924: Basic designation indicating a 120 mm bore and 165 mm outside diameter.
- AC: Angular Contact design.
- D: High contact angle of 25°, optimized for high thrust load capacity.
- GA: Specific internal design and clearance for universal matching.
- /HC: Hybrid Ceramic, signifying the use of ceramic balls for enhanced speed and durability.
- P4A: Denotes a super-precision tolerance class with very tight dimensional and running accuracy limits.
71924 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Low Friction Performance: The combination of ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 10,000 rpm. This results in lower operating temperatures and extended service life.
Superior Rigidity & Load Capacity: The 25° contact angle and robust construction provide high rigidity and an excellent thrust load carrying capacity. With a dynamic load rating of 16,380 lbf, it reliably handles demanding combined radial and axial loads.
Ultra-Precision & Thermal Stability: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration for superior rotational accuracy. The phenolic cage offers excellent dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Capability (SU): Designed as a Universal Matchable (SU) bearing, it can be mounted in tandem, back-to-back, or face-to-face arrangements with another identical bearing to create a pre-loaded set capable of supporting complex multi-directional loads.
71924 ACDGA/HCP4A Bearing Typical Application Areas
The 71924 ACDGA/HCP4A is ideally suited for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and flight control actuators.
- Medical Equipment: High-speed dental handpieces and imaging scanner gantries.
- High-Frequency Motors & Spindles: Where minimal vibration and high rotational accuracy are required.
