S71917 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71917 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.54 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.008mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
9810 lbf
Radial static load rating
10238 lbf
Limiting speed
9 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:
$ 1190.46
/ each
In Stock
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S71917 ACD/P4A Bearing Product Overview & Core Advantages
The S71917 ACD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle significant combined loads—both radial and axial loads in one direction. Its compact design, featuring a 25° contact angle and preload, ensures high system rigidity and precise shaft positioning, making it an ideal choice for high-speed, high-reliability machinery.
S71917 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Designates a 25° contact angle and that the bearing is supplied with a specific preload for optimal stiffness and performance. |
| P4A | Indicates a high-precision tolerance class equivalent to ABEC-7. The "A" suffix often specifies tolerances for the contact angle and inner/outer ring width. |
S71917 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 25° contact angle and factory-applied preload provides exceptional system stiffness, minimizing deflection under load and ensuring precise shaft runout.
- Superior Load Capacity: Engineered to support combined radial and axial loads simultaneously. With a dynamic load rating of 9810 lbf and a static load rating of 10238 lbf, it offers reliable performance in demanding conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the P4 precision and optimized internal geometry contribute to a high limiting speed of 9,000 rpm.
- Sealed and Lubricated for Life: The sealed design with factory-applied lubrication protects against contamination and is suitable for a wide operating temperature range of -30°C to 110°C, offering long-term, maintenance-free operation.
S71917 ACD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Arms and Precision Gearboxes
- Medical and Dental Equipment
