719/8 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
719/8 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.006 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
9
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
378 lbf
Radial static load rating
132 lbf
Limiting speed
200 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 107.05
/ each
In Stock
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719/8 ACE/HCP4A Bearing Product Overview & Core Advantages
The 719/8 ACE/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and high-speed performance. Designed to accommodate primarily axial loads in one direction, combined with radial loads, its compact design and P4 (ABEC-7) tolerance class make it ideal for high-reliability, precision machinery. The bearing features a ceramic ball and phenolic cage construction, contributing to reduced weight, lower friction, and enhanced operational capabilities at high rotational speeds.
719/8 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Series designation and bore diameter (8 mm) |
| ACE | Specific internal design optimized for high-speed and precision applications |
| HC | Hybrid Ceramic construction (Steel rings with Ceramic balls) |
| P4 | Tolerance class equivalent to ABEC-7, indicating very high running accuracy |
719/8 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a lightweight phenolic cage and low-friction ceramic balls significantly reduces centrifugal forces and operating temperatures, enabling a high limiting speed of 200,000 rpm.
- Precision & Rigidity: Manufactured to a P4 tolerance class with a 25° contact angle, this bearing provides exceptional running accuracy and axial rigidity for precise shaft positioning.
- Hybrid Performance: The hybrid ceramic design offers advantages such as electrical insulation, reduced thermal expansion, and extended service life, especially in high-speed or electrically sensitive environments.
- Preload Availability: The bearing is supplied with a preload, ensuring zero clearance for improved system stiffness and reduced vibration in the application.
719/8 ACE/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications including:
- High-Speed Spindles in CNC machining centers and precision grinding machines
- Turbochargers and other high-RPM automotive/motor sports components
- High-Frequency Motors and dental handpieces
- Precision Instrumentation and laboratory equipment requiring minimal runout and high accuracy
