7019 CD/PA9ADT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7019 CD/PA9ADT
Basic Information
System of measurement
Metric
Weight
2.42 kg
Tolerance class
PA9A
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
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7019 CD/PA9ADT Bearing Product Overview & Core Advantages
The 7019 CD/PA9ADT is a precision duplex tandem angular contact ball bearing designed for applications requiring exceptional rigidity and load capacity. This matched bearing set features a 15° contact angle and is supplied with a preload, ensuring high running accuracy and minimal axial/radial deflection under operational stresses. Its primary advantage lies in its ability to handle combined loads efficiently, making it an ideal choice for high-precision, high-reliability machinery where stability is paramount.
7019 CD/PA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing series, indicating a 95 mm bore, 145 mm OD, and 48 mm width. |
| C | Specifies a 15° contact angle. |
| D | Indicates the bearing is part of a duplex tandem (DT) matched set. |
| PA9A | Denotes an ultra-high tolerance class (PA9A) for exceptional dimensional and running accuracy. |
| DT | Confirms the duplex tandem arrangement of the two bearings in the set. |
7019 CD/PA9ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement of two bearings significantly increases axial load capacity and system rigidity, making it suitable for applications with heavy thrust loads in one direction.
- Precision Performance: Manufactured to PA9A tolerance class and supplied with preload, this bearing ensures minimal runout and high positional accuracy.
- Optimized High-Speed Capability: The lightweight phenolic cage and 15° contact angle contribute to stable operation at high speeds, with a limiting speed of 15,000 rpm.
- Durable Construction: Components made from chrome steel provide high fatigue life and durability under demanding conditions.
- Ready-to-Install: The set is pre-lubricated, simplifying installation and ensuring immediate operational readiness.
7019 CD/PA9ADT Bearing Typical Application Areas
This high-precision bearing set is ideally suited for:
- Machine Tool Spindles (especially for milling and grinding)
- High-Speed Precision Spindles
- Industrial Pumps and Compressors
- Aerospace Actuation Systems
- Robotic and Automation Equipment
