7019 CB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7019 CB/P4A
Basic Information
System of measurement
Metric
Weight
1.3 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
18 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1039.63
/ each
In Stock
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7019 CB/P4A Bearing Product Overview & Core Advantages
The 7019 CB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. As a P4 (ABEC-7) tolerance class bearing, it is designed to handle significant combined loads, accommodating both radial and axial loads in one direction. Its key advantages include high rigidity and exceptional high-speed performance, making it an ideal solution for high-reliability machinery. The bearing comes preloaded from the factory, ensuring immediate optimal performance and simplified installation.
7019 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Standard bearing series designation, indicating bore diameter of 95 mm, outside diameter of 145 mm, and width of 24 mm. |
| CB | Specific internal design and contact angle (15°), optimized for a specific preload and stiffness. |
| P4A | Denotes a tolerance class of P4 (equivalent to ABEC-7), with enhanced running accuracy requirements for the shaft and housing seats. |
7019 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The CB designation indicates a specific internal geometry and factory-applied preload. This eliminates internal clearance, resulting in significantly increased rigidity, precise shaft positioning, and reduced vibration under operational loads.
- Superior Load Capacity: The 15° contact angle is optimized to handle substantial combined radial and axial loads simultaneously, making it suitable for applications with complex loading conditions.
- High-Speed Capability: The lightweight and robust phenolic resin cage ensures excellent stability and guidance of the balls, contributing to a high limiting speed of 18,000 rpm. This is critical for spindle applications and other high-rotational equipment.
- Precision Performance: Manufactured to P4 precision class with tight dimensional tolerances, this bearing guarantees low noise, minimal vibration, and high running accuracy, which is essential for the final quality of machined parts.
7019 CB/P4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Robotics and Automation Arms
- Medical Equipment (e.g., high-speed dental handpieces)
- Aerospace Actuators and Control Systems
