71826 ACD/HCP4
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71826 ACD/HCP4
Basic Information
System of measurement
Metric
Weight
0.7 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.01mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
35
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8190 lbf
Radial static load rating
11250 lbf
Limiting speed
12 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:
$ 1819.35
/ each
In Stock
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71826 ACD/HCP4 Bearing Product Overview & Core Advantages
The 71826 ACD/HCP4 is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, making it ideal for handling combined loads (radial and axial) simultaneously. Its construction with a phenolic cage and ceramic balls enables superior high-speed performance and reduced rotational inertia. Manufactured to P4 (ABEC-7) tolerance class, it guarantees precise running accuracy for the most demanding precision machinery.
71826 ACD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71826 ACD/HCP4 breaks down as follows:
- 71826: Basic bearing series number, indicating a light series, angular contact design.
- ACD: Designates a 25° contact angle and that the bearing is supplied with a specific preload.
- HCP4: A combination suffix where:
- HC: Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings).
- P4: Specifies the tolerance class (P4 / ABEC-7), denoting very high precision.
71826 ACD/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This allows for higher limiting speeds, longer service life, and the ability to operate with minimal lubrication.
- Optimized Preload: The bearing is supplied with a preload, which eliminates internal clearance. This results in high system rigidity, precise shaft positioning, and reduced noise and vibration during operation.
- High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage is engineered for high-speed applications, providing excellent dimensional stability and low friction under high centrifugal forces.
- Superior Precision: Manufactured to P4 tolerance class, this bearing ensures minimal runout and consistent performance, which is critical for maintaining accuracy in precision spindles and machinery.
- High Load Capacity: The 25° contact angle is optimized to support significant combined loads, offering a robust solution for applications with complex loading conditions.
71826 ACD/HCP4 Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy actuators.
- High-Frequency Motors and Spindles: Especially those used in PCB drilling and semiconductor manufacturing.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
