7019 CD/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7019 CD/P4AQBCA
Basic Information
System of measurement
Metric
Weight
4.84 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
96 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
48600 lbf
Radial static load rating
72000 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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/P4AQBCA Bearing Product Overview & Core Advantages
The 7019 CD/P4AQBCA is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This back-to-back matched set configuration provides superior stiffness and can accommodate combined loads (radial and axial) from multiple directions. Manufactured to P4A tolerance class, it ensures high running accuracy and is ideal for high-precision, high-reliability machinery. The extra light preload (Class A) minimizes deflection under operational stresses, making it a premier choice for sophisticated engineering systems.
7019 CD/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing designation: 95 mm bore, 145 mm OD, 96 mm width. |
| CD | Specific internal design and contact angle of 15°. |
| P4A | High-Precision Tolerance Class with enhanced dimensional and running accuracy requirements. |
| QBC | Quadruplex Back-to-Back arrangement. A set of four bearings mounted in a back-to-back configuration. |
7019 CD/P4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, crucial for maintaining precision under heavy combined loads.
- High Load Capacity: Engineered with a 15° contact angle and robust construction using chrome steel rings and balls, this bearing is capable of handling significant radial and bidirectional axial loads simultaneously.
- Optimized for Precision & Speed: The phenolic cage contributes to smooth operation at high speeds, while the P4A tolerance class guarantees minimal runout and vibration for superior performance in high-speed applications.
- Pre-loaded for Performance: Supplied with an extra light preload (Class A), the bearing set is ready for installation, eliminating internal clearance and ensuring immediate precision and stability upon startup.
7019 CD/P4AQBCA Bearing Typical Application Areas
This precision quadruplex bearing set is ideally suited for the most demanding industrial applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost accuracy and rigidity.
- Precision Gearboxes: In applications where low noise, high torque, and precise positioning are critical.
- Industrial Pumps and Compressors: Where reliable operation under significant radial and axial forces is necessary.
- High-Frequency Spindles: Used in PCB drilling, semiconductor manufacturing, and other high-precision machining processes.
