7019 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7019 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
2.42 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
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
28125 lbf
Radial static load rating
34425 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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
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7019 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7019 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back arrangement is preloaded to Extra Light (Class A) specifications, providing superior rotational stability and minimal runout. Engineered to handle combined radial and axial loads simultaneously, it is ideal for high-speed spindles and other precision machinery requiring high rigidity and uncompromising performance. Manufactured to P4A tolerance class, it ensures exceptional dimensional accuracy and smooth operation.
7019 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7019 | Basic bearing designation indicating metric dimensions (95mm bore, 145mm OD, 48mm width). |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Duplex (two bearings) configuration. |
| DB | Back-to-Back mounting arrangement, providing high moment rigidity. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards for exceptional running accuracy. |
7019 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning under heavy combined loads.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant axial loads in both directions, in addition to high radial loads, making it suitable for complex loading conditions.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing offers excellent dimensional stability, reduced vibration, and is capable of operating at high speeds (up to 15,000 rpm).
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational lifespan under demanding conditions.
7019 ACD/P4ADBA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling heads.
- High-Speed Precision Equipment: Precision spindles for PCB drilling and routing.
- Industrial Pumps & Compressors: Applications requiring high rigidity and precise shaft control.
- Robotics & Automation: High-accuracy rotary joints and precision actuators.
