7019 ACEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7019 ACEGA/HCP4AL
Basic Information
System of measurement
Metric
Weight
1.08 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
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9360 lbf
Radial static load rating
8100 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
4
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
In Stock
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7019 ACEGA/HCP4AL Bearing Product Overview & Core Advantages
The 7019 ACEGA/HCP4AL is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing features an extra light preload (Class A) and is manufactured to P4A super-precision tolerance, ensuring smooth, quiet operation with minimal runout. Its 25° contact angle is optimized to support significant combined loads, handling both radial and axial forces simultaneously. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-reliability, high-rotation accuracy scenarios.
7019 ACEGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
The model number 7019 ACEGA/HCP4AL provides detailed technical specifications through its suffixes:
- 7019: Basic designation indicating a 95 mm bore, 145 mm OD, 24 mm width bearing.
- AC: Angular Contact design with a 25° contact angle.
- E: Optimized internal geometry for enhanced performance and load capacity.
- GA: Indicates a specific preload class (Extra Light / Class A).
- HCP4A: Denotes the tolerance class P4A, a super-precision grade with extremely tight dimensional and running accuracy tolerances.
- L: Signifies the bearing is Lubricated from the factory.
7019 ACEGA/HCP4AL Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with an extra light preload, this bearing provides superior rotational accuracy, system rigidity, and precise shaft positioning, minimizing deflection under load.
- Superior High-Speed Performance: The combination of lightweight ceramic balls (Silicon Nitride) and a phenolic resin cage reduces centrifugal forces and inertial mass, enabling stable operation at the high limiting speed of 15,000 rpm.
- Enhanced Load Capacity: The 25° contact angle and optimized internal design provide excellent combined load (radial and axial) carrying capability, with a dynamic load rating of 9360 lbf and a static load rating of 8100 lbf.
- Reduced Friction and Long Life: Ceramic balls offer lower thermal expansion, higher stiffness, and reduced friction compared to steel, leading to lower operating temperatures and significantly extended bearing life, especially in high-speed applications.
- Universal Matching: Designated as Universal Matchable (SU), this bearing can be universally paired with other SU-coded bearings in any combination to form a preloaded set, simplifying inventory and assembly for matched arrangements.
7019 ACEGA/HCP4AL Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: PCB drilling spindles and electric motor shafts.
- Medical Equipment: Dental handpieces and advanced imaging devices.
