S71919 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71919 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
1.19 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
24750 lbf
Limiting speed
21 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
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:
$ 683.99
/ each
In Stock
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S71919 CD/P4ADGA Bearing Product Overview & Core Advantages
The S71919 CD/P4ADGA is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and axial loads in both directions. Its compact design, featuring a universal match (SU) configuration, simplifies installation and ensures high system rigidity. Preloaded with an extra light (Class A) preload, it is optimized for high-speed operation and minimal running noise, making it an ideal solution for high-reliability, precision machinery.
S71919 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S71919 | Bearing series and size designation | Denotes a 95 mm bore, 130 mm OD, 36 mm width double row angular contact ball bearing. |
| CD | Contact angle of 15° | Optimized for high-speed applications and provides a balanced capacity for axial and radial loads. |
| P4A | Tolerance class | Specifies extremely tight dimensional and running accuracy tolerances, superior to ABEC 7. |
| DGA | Universal Matchable (SU) & Preload | Indicates the bearing is universally matchable (can be mounted in any combination) and comes with an extra light preload (Class A) for high rigidity and precise shaft positioning. |
S71919 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and 15° contact angle provide superior radial and axial stiffness, enabling the bearing to effectively handle combined loads. With a dynamic load rating of 17,842 lbf and a static load rating of 24,750 lbf, it ensures long-term operational reliability under demanding conditions.
- Super-Precision Performance: Manufactured to P4A tolerance class with exceptionally tight bore, OD, and width tolerances, this bearing guarantees minimal runout and vibration, which is critical for ultra-precise applications.
- Optimized High-Speed Operation: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 21,000 rpm. The standard grease lubrication is formulated for a wide operating temperature range (-30°C to 110°C).
- Sealed & Maintenance-Friendly: As a sealed bearing, it is protected from contamination. The factory-applied grease provides long-term, maintenance-free operation in clean environments.
S71919 CD/P4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Instrumentation: Used in measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Spindles: For PCB drilling, dental handpieces, and small tool spindles.
- Robotics: In high-accuracy robotic arm joints and rotary actuators.
