S71910 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71910 ACE/HCP4A Bearing Product Overview & Core Advantages
The S71910 ACE/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, ensuring superior running accuracy. Its core advantages include the ability to accommodate combined loads (simultaneous radial and axial loads), high-speed capability facilitated by a phenolic cage and ceramic balls, and reliable operation due to being pre-lubricated and sealed. This configuration makes it an ideal, compact solution for high-rigidity, high-reliability spindle arrangements.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a super-precision bearing series. |
| 71910 | Standard bearing designation (10mm bore x 72mm OD x 12mm width). |
| ACE | Indicates a 25° contact angle and specific internal design optimizations for high-speed operation. |
| HC | Signifies the use of hybrid ceramic balls (silicon nitride), which reduce centrifugal forces, lower operating temperature, and enable higher speeds. |
| P4 | Specifies the tolerance class equivalent to ABEC-7, guaranteeing extremely tight dimensional and running accuracy. |
| A | Denotes that the bearing is supplied with a preload for enhanced rigidity and precise rotational performance. |
S71910 ACE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces weight and inertia, leading to lower friction, reduced heat generation, and a higher limiting speed (28,000 rpm). This also enhances durability and provides electrical insulation.
- Phenolic Resin Cage: The lightweight and robust phenolic cage is ideal for high-speed applications, offering excellent dimensional stability and low friction under high centrifugal forces.
- High Rigidity & Load Capacity: The 25° contact angle and preload provide superior axial and radial stiffness, enabling the bearing to handle significant combined loads with minimal deflection.
- Sealed & Lubricated for Life: As a sealed bearing pre-filled with high-performance grease, it is protected from contamination and is effectively maintenance-free within its specified operating temperature range of -30°C to 110°C.
S71910 ACE/HCP4A Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for demanding applications where accuracy, rigidity, and rotational speed are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-frequency spindles for PCB drilling and precision measuring equipment.
- Robotics: High-accuracy joints and arm assemblies.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical rotating mechanisms.
