71919 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71919 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.5 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.009mm 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° to 110 °C
Radial dynamic load rating
11115 lbf
Radial static load rating
12375 lbf
Limiting speed
18 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1199.77
/ each
In Stock
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71919 CD/HCP4A Bearing Product Overview & Core Advantages
The 71919 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and high-speed performance. Its primary advantage lies in its ability to accommodate combined loads—handling significant radial loads alongside substantial thrust loads in one direction. Manufactured to P4 (ABEC-7) tolerance class, it guarantees superior running accuracy. The combination of a ceramic ball material and a phenolic cage enables a high limiting speed of 18,000 rpm, making it an ideal solution for high-rigidity, high-rotation applications.
71919 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation (95mm bore, 130mm OD, 18mm width). |
| CD | Indicates a 15° contact angle and a specific internal design optimized for high-speed operation and high rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce centrifugal forces, lower operating temperatures, and extend service life at high speeds. |
| P4A | Denotes the P4 (ABEC-7) tolerance class and that the bearing is supplied with a specific preload for immediate, precise operation. |
71919 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design, combined with a 15° contact angle and P4 precision, provides exceptional dimensional stability and rotational accuracy, which is critical for minimizing runout and vibration.
- Superior Load Capacity: Engineered to handle combined loads efficiently, with a radial dynamic load rating of 11,115 lbf and a radial static load rating of 12,375 lbf.
- Exceptional High-Speed Performance: The hybrid ceramic balls are lighter than steel, significantly reducing centrifugal loading. The lightweight phenolic resin cage further enhances stability and allows for the high limiting speed.
- Optimized for Demanding Environments: The open seal type allows for customized lubrication schemes, and the specified operating temperature range is from -30°C to 110°C.
71919 CD/HCP4A Bearing Typical Application Areas
This high-precision, high-speed angular contact bearing is ideally suited for:
- Machine Tool Spindles (High-speed milling and grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Aerospace & Defense Instrumentation
- Medical Equipment such as dental handpieces and imaging devices
