S71916 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71916 ACB/P4A Bearing Product Overview & Core Advantages
The S71916 ACB/P4A is a precision angular contact ball bearing designed for applications demanding high rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it is engineered to accommodate combined loads—simultaneously handling significant radial and axial forces. Its P4 (ABEC-7) tolerance class ensures exceptional running accuracy, making it ideal for high-speed spindles and other precision machinery. The bearing comes prelubricated and sealed, offering immediate installation and reliable, long-term performance in demanding operational environments.
S71916 ACB/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S: Denotes a bearing with a high-precision specification.
- 7: Indicates an angular contact ball bearing.
- 1916: Specifies the size series; 19 for the series and 16 for the 80mm bore diameter.
- ACB: Signifies a 25° contact angle and specific internal design optimizations for high rigidity and speed.
- P4A: Defines the tolerance class P4 (ABEC-7), representing very high precision levels for dimensional and running accuracy.
S71916 ACB/P4A Bearing Structural Features & Performance Benefits
The performance of the S71916 ACB/P4A is a direct result of its advanced construction:
- High Rigidity & Load Capacity: The 25° contact angle and robust internal geometry provide high resistance to deformation under combined radial and axial loads, ensuring stable operation.
- High-Speed Capability: The lightweight and durable phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 14,000 rpm.
- Precision Performance: Manufactured to P4 tolerance with chrome steel rings and balls, this bearing delivers exceptional running accuracy and low vibration.
- Sealed & Lubricated for Longevity: The integral seals protect against contamination, while the factory-applied lubricant ensures consistent performance across a temperature range of -30°C to 110°C, reducing maintenance needs.
S71916 ACB/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- High-Speed Pumps and Compressors
