S71916 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71916 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.38 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7762 lbf
Radial static load rating
8212 lbf
Limiting speed
9.5 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:
$ 1057.33
/ each
In Stock
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S71916 ACD/P4A Bearing Product Overview & Core Advantages
The S71916 ACD/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing, it is optimized to support high combined loads, accommodating significant axial loads in one direction alongside radial loads. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and precision machinery. The bearing comes preloaded and lubricated from the factory, simplifying installation and guaranteeing immediate, reliable performance.
S71916 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a bearing with a super-precision tolerance class. |
| 7 | Indicates an angular contact ball bearing. |
| 1916 | Specifies the bearing size: 80mm bore, 110mm OD, 16mm width. |
| ACD | Signifies a 25° contact angle and that the bearing is supplied as a universally matchable set (though this is a single bearing, it is prepared for precise matching). |
| P4A | Denotes the P4 tolerance class (equivalent to ABEC-7) and a specific running accuracy level. |
S71916 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust internal geometry are engineered to handle high combined loads, providing excellent resistance to deflection under complex loading conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 9,500 rpm. This makes it an excellent high-speed bearing for spindle applications.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional control on the bore diameter, outside diameter, and width, ensuring minimal runout and vibration for ultra-smooth operation.
- Optimized for Performance: The use of chrome steel for both rings and balls, combined with a precise ball quantity and ball diameter, ensures high dynamic and static load ratings for long service life.
- Ready-to-Install: The bearing is pre-lubricated and features a sealed design, protecting against contamination and preserving the lubricant, which is suitable for a temperature range of -30°C to 110°C.
S71916 ACD/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where accuracy and speed are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, centrifuges, and imaging scanner rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- High-Frequency Motors and Spindles: Where low vibration and high rotational accuracy are mandatory.
