S71912 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71912 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
30
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2194 lbf
Radial static load rating
1868 lbf
Limiting speed
22 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:
$ 654.89
/ each
In Stock
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S71912 ACB/HCP4A Bearing Product Overview & Core Advantages
The S71912 ACB/HCP4A is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. As a single-row bearing, it is designed to accommodate high combined loads—handling both radial and substantial axial loads in one direction. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, while the ceramic balls and phenolic cage contribute to high-speed capability and reduced weight. Preloaded and pre-lubricated, this bearing offers immediate high performance and high rigidity, making it ideal for compact, high-precision spindles and machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71912 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 60mm bore. |
| ACB | A specific internal design and contact angle (25°) optimized for high precision and high-speed operation. |
| HCP4A | Denotes a P4 (ABEC-7) tolerance class, a phenolic resin cage, and a specific internal preload and lubrication configuration for immediate, high-performance use. |
S71912 ACB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and preload provide high axial and radial rigidity, minimizing deflection under load for superior machining accuracy.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage enables a high limiting speed of 22,000 rpm.
- Enhanced Load Capacity: Engineered to handle significant combined loads, making it suitable for applications with simultaneous radial and axial forces.
- Ready-to-Use & Sealed: The bearing is sealed and comes pre-lubricated, protecting against contamination and ensuring long-term, maintenance-free operation within its specified temperature range.
S71912 ACB/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles for PCB drilling and routing
- High-frequency Maintenance-Free Motors
- Medical and Dental Equipment handpieces
- Aerospace Instrumentation and gyroscopes
