S71917 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71917 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The S71917 ACDGA/HCP4A is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with a 25° contact angle and an Extra light (Class A) preload, it delivers superior rotational accuracy and rigidity. Its compact design, featuring a double row configuration, enables it to simultaneously support substantial combined loads (radial and bidirectional axial loads) in a single unit. The use of ceramic balls and a phenolic cage contributes to its high-speed capability and extended service life, making it an ideal solution for high-performance machinery.
S71917 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series.
- 1917: Standard size designation (Bore: 85mm, OD: 120mm, Width: 18mm).
- AC: Angular Contact design.
- D: Double row of balls.
- GA: Universal Matchable (SU) bearing in a set of 4.
- HCP4A: P4A tolerance class (exceeding ABEC 7 precision) and pre-greased.
S71917 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides a rigid support system, effectively handling combined radial and axial loads from both directions. The optimized 25° contact angle and ceramic ball construction enhance load distribution and capacity.
High-Speed Performance: The lightweight phenolic resin cage ensures stability and low friction at high rotational speeds. Combined with ceramic balls that reduce centrifugal forces, the bearing achieves a high limiting speed of 28,000 rpm.
Precision & Longevity: Manufactured to a P4A tolerance class, this bearing guarantees exceptional running accuracy. The sealed design with factory-applied grease lubrication protects against contamination and provides maintenance-free operation within a wide temperature range of -30°C to 110°C.
S71917 ACDGA/HCP4A Bearing Typical Application Areas
The S71917 ACDGA/HCP4A is ideally suited for high-precision, high-speed applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Systems
