71934 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71934 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 71934 ACDGA/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This single bearing features a 25° contact angle and is manufactured to P4A tolerance class, ensuring superior running accuracy. Its core advantages include the ability to accommodate combined loads (radial and axial) efficiently, high-speed capability up to 16,250 rpm facilitated by its phenolic cage and ceramic balls, and outstanding rigidity due to its precision-ground geometry. The bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve optimal stiffness and performance in demanding machinery.
71934 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| 71934 | Basic series code, indicating a light series metric bearing with a 170 mm bore and 230 mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex arrangement designation. In this case, it's a single bearing that is universally matchable for duplex mounting. |
| GA | Indicates a specific internal clearance and preload level. Here, it signifies Extra light preload (Class A). |
| HC | Refers to the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | The tolerance class, denoting very high precision levels for dimensional and running accuracy. |
71934 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling higher limiting speeds and extended service life, especially in high-speed applications.
Phenolic Cage: The lightweight and robust phenolic cage ensures stable operation at high rotational speeds, contributing to the bearing's impressive limiting speed of 16,250 rpm.
High Rigidity and Load Capacity: The 25° contact angle and precision P4A manufacturing provide high rigidity, effectively supporting combined loads with a dynamic load rating of 27,900 lbf and a static load rating of 36,000 lbf.
Precision and Universal Matchability: Manufactured to P4A tolerance class and designated as Universal Matchable (SU), these bearings can be mounted in pairs or triple sets without selective matching, simplifying installation and ensuring consistent, high-performance preload.
71934 ACDGA/HCP4A Bearing Typical Application Areas
The 71934 ACDGA/HCP4A is ideally suited for high-performance machinery requiring precision, speed, and reliability. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other high-accuracy automated equipment.
- High-Frequency Motors: Where low friction and high-speed capability are critical.
- Aerospace and Defense Systems: Including gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: Such as high-speed dental handpieces and laboratory centrifuges.
