7019 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7019 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
2.01 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
48 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
29925 lbf
Radial static load rating
36000 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 767.55
/ each
In Stock
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7019 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7019 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with a 15° contact angle and an Extra Light (A) preload, it is optimized to handle combined loads—simultaneously supporting significant radial and axial forces. Its Universal Matchable (SU) design allows for flexible mounting in pre-determined pairs to achieve the required rigidity and operational precision. Featuring a P4A tolerance class and ceramic ball construction, this bearing is the ideal choice for high-speed spindles and other high-reliability machinery where high rigidity and minimal thermal expansion are critical.
7019 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing series and size designation (Bore: 95mm, OD: 145mm, Width: 48mm). |
| CD | Indicates a Universal Matchable (SU) bearing designed to be mounted in a specific duplex pair (Back-to-Back) to optimize load distribution and system rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls, which reduce friction, heat generation, and allow for higher operating speeds. |
| P4A | Denotes an ultra-high-precision tolerance class exceeding ABEC 7/ISO P4 standards, ensuring exceptional running accuracy and minimal vibration. |
| DGA | Specifies the use of a Phenolic (polyamide) cage, which offers excellent performance in high-speed applications due to its light weight and low friction characteristics. |
7019 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and Universal Matchable (SU) pairing create a system with superior stiffness, capable of handling high combined radial and axial loads.
- Exceptional High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and operating temperatures, enabling a high limiting speed of 15,000 rpm.
- Ultra-Precision Operation: Manufactured to a P4A tolerance class with a consistent 15° contact angle and Extra Light preload, this bearing ensures minimal runout and superior rotational accuracy for critical applications.
- Stable Thermal Characteristics: Hybrid ceramic construction provides lower thermal expansion compared to all-steel bearings, contributing to greater stability and precision over a wide temperature range.
7019 CD/HCP4ADGA Bearing Typical Application Areas
This precision bearing is engineered for the most demanding sectors, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
