S71900 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
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S71900 ACD/P4A Bearing Product Overview & Core Advantages
The S71900 ACD/P4A is a super-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed performance. As a single-row bearing, it is designed to accommodate high combined loads (radial and axial) primarily in one direction. Its P4 (ABEC-7) tolerance class ensures minimal runout and vibration, making it ideal for high-precision spindles. The bearing is preloaded for enhanced rigidity and comes pre-lubricated for immediate operation, offering a compact and reliable solution for demanding machinery.
S71900 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: Designates a series of high-precision, high-speed angular contact ball bearings.
- 19: Indicates the bore diameter code. For this series, it corresponds to a 10 mm bore.
- 00: Indicates the dimension series (width and outer diameter profile).
- ACD: Signifies the contact angle of 25 degrees and a specific internal design optimized for high stiffness and speed.
- P4A: Denotes the tolerance class. P4 is equivalent to ABEC-7, indicating very high precision. The A suffix indicates a specific preload level for optimal rigidity.
S71900 ACD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row angular contact design, combined with a 25° contact angle and P4 precision, provides superior axial and radial stiffness, ensuring minimal deflection under load for maximum machining or operational accuracy.
Superior High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 70,000 rpm. This makes it an excellent choice for high-speed spindle applications.
High Load Capacity: Manufactured from high-grade chrome steel for both rings and balls, this bearing offers a high dynamic load rating, enabling it to handle significant combined loads throughout its service life.
Ready-to-Install: The bearing is supplied pre-lubricated and sealed, protecting it from contamination during handling and ensuring immediate, reliable performance upon installation.
S71900 ACD/P4A Bearing Typical Application Areas
The S71900 ACD/P4A is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and PCB drilling machines.
- Precision Instruments: High-speed measuring and testing equipment.
- Robotics: High-accuracy joints and arm assemblies.
- Medical Equipment: Dental handpieces and small surgical tool drives.
