S71919 ACDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71919 ACDGA/P4A Bearing Product Overview & Core Advantages
The S71919 ACDGA/P4A is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing is designed to simultaneously handle significant combined radial and axial loads. Its compact design, featuring an 18mm width, makes it ideal for space-constrained, high-performance spindles and precision machinery where reliability and high rigidity are paramount. The phenolic cage and preloaded configuration contribute to smooth, quiet operation at high speeds.
S71919 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel Bearing Components |
| 7 | Angular Contact Ball Bearing |
| 1919 | Bore Diameter: 95 mm, Outer Diameter: 130 mm, Width: 18 mm |
| AC | 25° Contact Angle |
| D | Two-piece phenolic (resin) cage |
| GA | Light preload |
| P4A | High precision tolerance class, superior to ABEC 7 |
S71919 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides superior radial and axial stiffness, enabling the bearing to handle combined loads effectively. With a 25° contact angle and a high ball count (28), it offers excellent axial load capacity in both directions.
High-Speed Performance: The lightweight phenolic cage (D) ensures stability and low friction at high rotational speeds, contributing to the bearing's impressive limiting speed of 21,000 rpm. This makes it a prime choice for high-speed spindles.
Precision & Stability: Manufactured to P4A tolerance class with extremely tight dimensional runouts, this bearing guarantees minimal vibration and exceptional running accuracy, which is critical for precision machining and instrumentation.
Universal Matching & Sealed Design: Designated as Universal Matchable (SU), these bearings can be mounted in sets (up to 4) in various configurations (DB, DF, DT) without selective assembly, simplifying installation. The sealed construction protects against contamination and retains lubrication.
S71919 ACDGA/P4A Bearing Typical Application Areas
The S71919 ACDGA/P4A is ideally suited for high-precision, high-speed applications across various industries, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Medical Equipment: High-speed dental handpieces and surgical drill spindles.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision guidance systems.
- High-Frequency Motors & Spindles: Where low friction, high speed, and rigidity are required.
