S71926 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71926 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.31 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.01mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
27
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
19598 lbf
Radial static load rating
22950 lbf
Limiting speed
7.5 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:
$ 2103.92
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71926 ACD/HCP4A Bearing Product Overview & Core Advantages
The S71926 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle and P4 (ABEC-7) tolerance class, it is designed to accommodate combined loads—simultaneously handling significant radial and axial forces. Its ceramic ball construction and phenolic cage contribute to superior high-speed performance and reduced weight, making it an ideal solution for high-reliability, precision machinery where minimal thermal expansion and high dynamic response are critical.
S71926 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision angular contact ball bearings. |
| 1926 | Specifies the bearing dimensions: 130mm bore, 180mm outside diameter, 24mm width. |
| ACD | Signifies a 25° contact angle and a specific internal design optimized for high rigidity and high-speed operation. |
| HC | Denotes the use of hybrid ceramic balls (silicon nitride), which reduce centrifugal forces, lower operating temperature, and extend service life. |
| P4A | Indicates a P4 tolerance class (equivalent to ABEC-7), representing very high precision in running accuracy and dimensional tolerances. |
S71926 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust internal geometry provide high resistance to deformation under combined loads, ensuring stable performance under both radial (19,598 lbf dynamic) and axial forces.
- Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic resin cage minimizes inertial forces, allowing for a high limiting speed of 7,500 rpm. This design reduces friction and heat generation.
- Precision and Accuracy: Manufactured to P4 tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy for applications requiring minimal vibration and runout.
- Pre-lubricated and Sealed: The bearing comes lubricated and sealed, protecting against contamination and providing long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71926 ACD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Aerospace Actuators: Control surface mechanisms and auxiliary power units.
