S71907 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71907 ACB/HCP4A Bearing Product Overview & Core Advantages
The S71907 ACB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its ceramic balls and P4 (ABEC-7) tolerance class, ensuring ultra-low runout and smooth operation. Its key advantage lies in its ability to handle high-speed operation up to 36,000 rpm while supporting significant combined loads (radial and axial) due to its 25° contact angle. The preloaded and sealed design provides high system rigidity and long-term, maintenance-free service, making it an ideal choice for high-reliability spindles and precision machinery.
S71907 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Indicates a series of high-precision, high-speed angular contact ball bearings.
- 1907: Denotes the size series, with a 35mm bore, 55mm outside diameter, and 10mm width.
- ACB: Signifies Angular Contact Bearing with a 25° contact angle.
- HCP4A: A compound suffix. HC indicates a Phenolic Resin Cage. P4 is the tolerance class (ABEC-7). A signifies a specific internal design and preload level for optimal rigidity.
S71907 ACB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds.
- High Rigidity and Precision: The P4 tolerance and factory-set preload eliminate internal clearance, providing maximum system stiffness and precise rotational accuracy for critical applications.
- Superior High-Speed Performance: The lightweight phenolic resin cage (HC) and ceramic balls are optimized for minimal inertia, enabling stable operation at the limiting speed of 36,000 rpm.
- Sealed and Lubricated for Life: The sealed design with factory-applied lubrication protects against contamination and ensures consistent performance across a wide temperature range (-30° to 110°C), offering a maintenance-free solution.
S71907 ACB/HCP4A Bearing Typical Application Areas
- High-Frequency Spindles for CNC machining centers, grinding, and milling
- Precision Instrumentation and medical device motors
- High-Speed Motors and turbo-molecular pumps
- Advanced Robotics and automation direct-drive systems
