7019 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7019 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.23 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
145 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6660 lbf
Radial static load rating
5850 lbf
Limiting speed
22 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:
$ 1039.56
/ each
In Stock
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7019 CB/HCP4A Bearing Product Overview & Core Advantages
The 7019 CB/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. This metric bearing features a 15° contact angle and is supplied with a preload, delivering superior rigidity and precise shaft positioning. Manufactured to P4 (ABEC-7) tolerance class, it guarantees minimal runout and consistent performance. The combination of a ceramic ball and phenolic cage enables outstanding high-speed performance, with a limiting speed of 22,000 rpm, making it ideal for demanding, high-rotation machinery.
Model Code Breakdown
The model number 7019 CB/HCP4A provides detailed technical specifications:
- 7019: Basic bearing series and size designation (Bore: 95mm, OD: 145mm, Width: 24mm).
- CB: Indicates a specific contact angle (15°) and preload class for optimized internal clearance and rigidity.
- HCP4A: Denotes the bearing's tolerance class and material/design features.
- P4: Corresponds to ABEC-7 precision grade.
- A: Indicates the bearing is supplied lubricated.
7019 CB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The 15° contact angle and applied preload provide high axial and radial stiffness, effectively handling combined loads and minimizing deflection under operation.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls reduce centrifugal forces, significantly increasing the limiting speed and reducing operational friction and heat generation.
- Precision Engineering: Manufactured to P4 (ABEC-7) tolerance standards, this bearing ensures exceptional running accuracy, low vibration, and consistent performance in precision spindles.
- Optimized for Performance: The bearing is pre-lubricated and features an open seal type, allowing for customized lubrication regimes in clean, controlled environments to maximize service life.
7019 CB/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for electric motors and generators operating at extreme RPMs.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and other critical rotating assemblies.
