7019 ACD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7019 ACD/HCP4ATBTA
Basic Information
System of measurement
Metric
Weight
3.01 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
72 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
37125 lbf
Radial static load rating
51300 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7019 ACD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7019 ACD/HCP4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back matched set configuration delivers superior stiffness and load-carrying capacity, making it ideal for machine tool spindles and other high-performance machinery. Its P4A tolerance class ensures ultra-precise rotational accuracy, while the ceramic balls and phenolic cage contribute to high-speed capability and reduced weight. This bearing is pre-lubricated and configured to handle significant combined loads.
7019 ACD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Contact Angle of 25° |
| HCP4A | P4A Tolerance Class; High-Precision Grade |
| TBT | Triplex Back-to-Back Matched Arrangement |
| A | Extra Light Preload |
7019 ACD/HCP4ATBTA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity: The triplex back-to-back (TBT) arrangement of three bearings creates an extremely rigid bearing system, critical for minimizing deflection under heavy combined loads in precision applications.
- High-Speed Performance: The combination of silicon nitride ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a high limiting speed of 15,000 rpm, reducing friction and heat generation.
- Superior Load Capacity: With a 25° contact angle and a robust design, this bearing set offers high radial dynamic load rating (37,125 lbf) and radial static load rating (51,300 lbf), efficiently managing both radial and axial forces.
- Ultra-Precision: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing ensures minimal runout and superior rotational accuracy.
7019 ACD/HCP4ATBTA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and precision.
- Precision Grinding Spindles: Applications where extreme accuracy and smooth operation are paramount.
- High-Frequency Machining Centers: Equipment that operates at very high rotational speeds.
- Other Precision Rotary Equipment: Including high-performance pumps and specialized instrumentation.
