S71919 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71919 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.61 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
130 mm
Outside diameter tolerance
-0.009mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
38
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3870 lbf
Radial static load rating
3960 lbf
Limiting speed
14 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:
$ 1423.82
/ each
In Stock
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S71919 ACB/HCP4A Bearing Product Overview & Core Advantages
The S71919 ACB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This single-row bearing is distinguished by its 25° contact angle and P4 (ABEC-7) tolerance class, enabling superior performance under combined radial and axial loads. Its core advantages include high-speed capability, facilitated by a phenolic cage and ceramic balls, and operational readiness with factory-applied lubrication, making it an ideal choice for high-rigidity, precision spindles and machinery.
S71919 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings. |
| 1919 | Standard size designation (Bore: 95mm, OD: 130mm, Width: 18mm). |
| ACB | Specific internal design and contact angle (25°) optimized for high stiffness and speed. |
| HCP4A | Indicates a P4 (ABEC-7) tolerance class and a specific preload level (A) for precise running accuracy. |
S71919 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to a P4 tolerance class with a 25° contact angle, this bearing provides exceptional dimensional stability and running accuracy, which is critical for high-precision applications.
- Superior Load Capacity: The angular contact design efficiently handles combined loads (radial and axial), making it suitable for complex loading conditions.
- Enhanced High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 14,000 rpm and minimizing operational friction and heat generation.
- Pre-Lubricated and Sealed: Arrives lubricated from the factory and is sealed to protect against contamination, ensuring long service life and reduced maintenance in clean, high-speed environments.
S71919 ACB/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles (e.g., CNC milling and grinding spindles)
- High-Frequency Motors
- Precision Robotics and Automation Equipment
- Aerospace Instrumentation and Guidance Systems
