7019 CD/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7019 CD/HCP4AL
Basic Information
System of measurement
Metric
Weight
1 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
145 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18428 lbf
Radial static load rating
18000 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7019 CD/HCP4AL Bearing Product Overview & Core Advantages
The 7019 CD/HCP4AL is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads, it efficiently handles both radial loads and substantial axial loads in one direction. Its P4A tolerance class ensures ultra-precision operation, while the ceramic ball and phenolic cage construction contribute to superior high-speed capabilities and reduced weight. This bearing is preloaded, offering enhanced rigidity and rotational accuracy right from installation, making it ideal for high-reliability, precision machinery.
7019 CD/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex bearing set with a specific preload and universal matching for a rigid, pre-adjusted arrangement. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce weight and friction, enabling higher speeds and longer service life. |
| P4A | Denotes an ultra-precision tolerance class with very tight running accuracy and dimensional stability. |
7019 CD/HCP4AL Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The duplex (CD) arrangement and application of preload result in a very stiff bearing system, minimizing deflection under load and ensuring exceptional rotational accuracy for precision spindles.
- Superior High-Speed Performance: The combination of hybrid ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, allowing for a high limiting speed of 17,000 rpm.
- Enhanced Load Capacity: The 15° contact angle is optimized to handle significant axial loads in addition to radial loads, making it suitable for applications with combined loading.
- Optimized for Performance: The open seal type allows for optimal lubrication flow and heat dissipation, which is critical for maintaining performance at high speeds and within the specified temperature range of -30°C to 110°C.
7019 CD/HCP4AL Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace Systems: Gyroscopes, auxiliary power units, and flight control mechanisms.
- High-Frequency Motors and Spindles: Where minimal runout and high rigidity are paramount.
