71919 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71919 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.48 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
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7020 lbf
Radial static load rating
5738 lbf
Limiting speed
25 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:
$ 1200.2
/ each
In Stock
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71919 CE/HCP4A Bearing Product Overview & Core Advantages
The 71919 CE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low heat generation, and extended service life, making it an ideal choice for high-reliability, high-performance systems.
71919 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation (95mm bore, 130mm OD). |
| CE | Indicates a 15° contact angle and specific internal design optimized for high-speed operation and rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce friction and weight for higher speeds. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific running accuracy requirements. |
71919 CE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The combination of ceramic balls and a lightweight phenolic resin cage minimizes centrifugal forces and friction, enabling a high limiting speed of 25,000 rpm.
- High Rigidity & Load Capacity: The angular contact design and 15° contact angle provide high rigidity, effectively supporting combined radial and axial loads.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional control on bore, outside diameter, and width, ensuring consistent, high-precision performance in the most demanding applications.
- Preload & Thermal Stability: Designed to be used with a preload, which increases system stiffness. The ceramic balls exhibit lower thermal expansion than steel, contributing to stable preload over a wide temperature range (-30° to 110 °C).
71919 CE/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and reliability are critical. Key sectors include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In high-accuracy robotic arms and joints.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and auxiliary power units.
- High-Frequency Motors & Spindles: Used in PCB drilling spindles and dental handpieces.
