71919 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71919 CDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.58 kg
Tolerance class
P4A
Seal type
Open
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
18 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
11115 lbf
Radial static load rating
12375 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71919 CDGC/P4A Bearing Product Overview & Core Advantages
The 71919 CDGC/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction and combined loads, this bearing features a 15° contact angle and P4A super-precision tolerance class, making it ideal for machine tool spindles and other demanding equipment. Its moderate preload (Class C) ensures optimal stiffness and minimal runout, while the universal matchable (SU) design allows for flexible mounting arrangements in sets.
71919 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series, indicating a single-row angular contact ball bearing with a 95 mm bore and 130 mm OD. |
| CD | Contact angle designation (15°). |
| GC | Preload class (Moderate / Class C). |
| P4A | Tolerance class, denoting super-precision dimensional and running accuracy. |
71919 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design with a 15° contact angle and moderate preload provides superior axial stiffness and precise shaft positioning, critical for high-speed applications.
- Optimized Load Capacity: Engineered to handle significant axial loads in one direction and combined (radial and axial) loads, with a dynamic load rating of 11115 lbf and static load rating of 12375 lbf.
- High-Speed Capability: The phenolic resin cage reduces centrifugal forces and friction, supporting a limiting speed of 15,000 rpm.
- Precision Materials: Constructed from chrome steel for rings and balls, ensuring high durability and wear resistance in precision environments.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be paired in sets (typically 3 bearings) to accommodate complex load arrangements and preload requirements.
71919 CDGC/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling heads.
- Precision Instruments: Measuring devices, optical equipment, and laboratory apparatus.
- High-Speed Drives: CNC machinery, robotics, and servo motors requiring minimal vibration.
- Aerospace & Defense: Gyroscopes, navigation systems, and actuator mechanisms.
