S71910 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71910 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.007mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2722 lbf
Radial static load rating
1834 lbf
Limiting speed
23 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:
$ 485.83
/ each
In Stock
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S71910 ACE/P4A Bearing Product Overview & Core Advantages
The S71910 ACE/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, making it ideal for handling combined radial and axial loads simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it ensures superior running accuracy and is pre-lubricated for immediate use in high-speed, high-reliability machinery.
S71910 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S | Super-precision bearing |
| 71910 | Standard size designation (50mm bore, 72mm OD, 12mm width) |
| ACE | Specific internal design with a 25° contact angle and optimized internal geometry |
| P4A | Indicates P4 (ABEC-7) tolerance class and specific running accuracy requirements |
S71910 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and preload provide excellent stiffness, enabling the bearing to effectively support combined radial and axial loads.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to the high limiting speed of 23,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional control on the bore diameter, outside diameter, and width for superior running accuracy and minimal vibration.
- Durability & Reliability: Components made from chrome steel offer high fatigue resistance, while the pre-applied lubrication ensures immediate and reliable operation within the specified temperature range.
S71910 ACE/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Aerospace Instrumentation
