S71914 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71914 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71914 ACDGA/HCP4A is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This sealed bearing features an extra light preload (Class A) and is manufactured to P4A tolerance class, ensuring minimal runout and superior rotational precision. Its compact design with a 70 mm bore and 16 mm width provides a high load capacity in a minimal space. A key advantage is its ability to accommodate combined loads (radial and axial) simultaneously, making it an ideal solution for high-rigidity, high-speed applications requiring long-term, maintenance-free operation.
S71914 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S | Stainless Steel (Corrosion Resistant) | Indicates the ring material is stainless steel for enhanced corrosion resistance. |
| 71914 | Basic Bearing Code | Defines the bearing series and dimensions (70mm bore, 100mm OD, 16mm width). |
| AC | Angular Contact | Designed to support combined radial and axial loads. |
| D | Double Row | Two rows of balls for high rigidity and increased load capacity. |
| GA | Light Preload | Specifies a light preload for reduced noise and vibration at high speeds. |
| HC | Hybrid Ceramic | Indicates the use of ceramic balls, offering higher speed capability and electrical insulation. |
| P4A | High Precision Tolerance | Denotes a very high precision grade for applications requiring extreme accuracy. |
S71914 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row design and 25° contact angle provide superior rigidity, enabling the bearing to handle significant combined loads and moment loads effectively. This makes it exceptionally stable under complex loading conditions.
Enhanced High-Speed Performance: The combination of ceramic balls (lower density than steel) and a phenolic cage reduces centrifugal forces and allows for a limiting speed of 28,000 rpm. This hybrid construction is ideal for high-speed spindles and other demanding rotational applications.
Precision and Longevity: Manufactured to P4A tolerance class with tight dimensional control on the bore, OD, and width, this bearing ensures minimal vibration and precise running accuracy. The sealed construction retains grease and excludes contaminants, contributing to a long, maintenance-free service life within its specified temperature range of -30°C to 110°C.
Universal Matching: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination to achieve the required preload or rigidity, simplifying inventory and assembly for machine builders.
S71914 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Robotics: Articulated arms and joints where accuracy, speed, and compactness are critical.
- Medical Equipment: High-speed dental handpieces and imaging scanner gantries.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
- High-Frequency Motors and Spindles: Applications leveraging the benefits of hybrid ceramic construction for extreme rotational speeds.
