S7019 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7019 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.01 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
145 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 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° to 110 °C
Radial dynamic load rating
18428 lbf
Radial static load rating
18000 lbf
Limiting speed
11 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:
$ 1247.21
/ each
In Stock
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S7019 CD/HCP4A Bearing Product Overview & Core Advantages
The S7019 CD/HCP4A is a high-precision, single-row angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. Its primary advantage lies in its ability to accommodate combined loads—significant radial loads and substantial thrust loads in one direction—simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it guarantees superior running accuracy and rotational precision. The combination of a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal choice for high-reliability and high-speed applications.
S7019 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7019 | Basic bearing series and size designation (95mm bore, 145mm OD, 24mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation and high thrust capacity. |
| D | Indicates the bearing is supplied with a specific preload for enhanced rigidity and precise shaft positioning. |
| HC | Signifies the use of Hybrid Ceramic components (Ceramic balls with steel rings). |
| P4A | Denotes the tolerance class P4 (ABEC-7), ensuring ultra-precise dimensional and running accuracy. |
S7019 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction and heat generation. This allows for a higher limiting speed (11,000 rpm), reduced wear, and operation with minimal lubrication. Ceramic balls are also electrically insulating and resistant to corrosion.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability at high speeds, contributing to smooth operation and reduced centrifugal forces.
- Optimized Contact Angle & Preload: The 15° contact angle is ideal for handling high thrust loads. The factory-applied preload (D) increases system stiffness, improves rotational accuracy, and reduces noise and vibration.
- High Load Capacity: With a dynamic load rating of 18,428 lbf and a static load rating of 18,000 lbf, this bearing is built to withstand demanding combined radial and axial loads.
- Sealed & Lubricated: The bearing comes sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S7019 CD/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Turbochargers
- Advanced Robotics and Automation Equipment
- Aerospace Instrumentation
