S71906 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71906 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.049 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1521 lbf
Radial static load rating
968 lbf
Limiting speed
30 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 283.95
/ each
In Stock
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S71906 ACD/P4A Bearing Product Overview & Core Advantages
The S71906 ACD/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This sealed bearing features a phenolic cage and is pre-lubricated for long-term performance. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery where high rigidity and preload capability are critical. Manufactured to a P4 (ABEC-7) tolerance class, it ensures superior running accuracy and consistent performance.
S71906 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel Bearing Series |
| 7 | Angular Contact Ball Bearing |
| 1906 | Size Series: 19 (Light), 06 (30mm Bore) |
| ACD | 25° Contact Angle, High Precision Design |
| P4A | P4 (ABEC-7) Tolerance Class, with specific internal clearance/geometry optimization |
S71906 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Preload: The single-row design with a 25° contact angle is optimized for high rigidity and is available for preloading, minimizing deflection under load for superior positional accuracy.
- Combined Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, a hallmark of angular contact bearings.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 30,000 rpm, which is essential for high-speed applications.
- Sealed and Lubricated for Life: The integral seals protect against contamination and retain the factory-applied lubricant, resulting in a maintenance-free design suitable for the specified operating temperature range.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional controls on the bore diameter, outside diameter, and width, ensuring smooth, quiet, and vibration-free operation.
S71906 ACD/P4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation and Control Systems
- High-Performance Robotics and Automation
