S71915 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71915 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.36 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8055 lbf
Radial static load rating
8438 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 74.73
/ each
In Stock
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S71915 CDGA/P4A Bearing Product Overview & Core Advantages
The S71915 CDGA/P4A is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing from a universally matchable (SU) set, it is engineered to accommodate combined radial and axial loads simultaneously. Its defining characteristics include an extra light preload (Class A) and a P4A tolerance class, ensuring smooth, quiet operation and high positional accuracy in high-speed, high-precision environments. The phenolic cage and grease lubrication further enhance its performance, making it a compact and reliable solution for critical machinery.
S71915 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Basic bearing designation, indicating a 75mm bore, 105mm OD, and 16mm width. |
| C | 15° contact angle, optimized for high axial load capacity. |
| DG | The bearing is universally matchable (SU). Two bearings can be paired in a duplex arrangement. |
| A | Signifies an extra light preload (Class A), minimizing friction and heat generation for superior high-speed performance. |
| P4A | Indicates a super-precision tolerance class with enhanced running accuracy for applications requiring minimal vibration and noise. |
S71915 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with a 15° contact angle, this bearing provides exceptional running accuracy and system stiffness, crucial for maintaining precision under load.
- Optimized Load Capacity: The angular contact design is inherently capable of supporting significant combined radial and axial loads, making it ideal for complex loading conditions.
- Superior High-Speed Performance: The combination of an extra light preload (A) and a lightweight, durable phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm.
- Ready-to-Install and Matched: As part of a universally matchable (SU) set, it simplifies procurement and assembly for duplex mounting, ensuring optimal preload and performance in matched arrangements.
S71915 CDGA/P4A Bearing Typical Application Areas
This super-precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Instrumentation: Used in measuring devices, optical scanners, and laboratory equipment.
- High-Frequency Spindles: In PCB drilling, engraving, and other applications demanding very high rotational speeds.
- Robotics: For critical joints and actuators where precision motion control is paramount.
