71915 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71915 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.3 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
7988 lbf
Limiting speed
20 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:
$ 803.95
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71915 ACD/HCP4A Bearing Product Overview & Core Advantages
The 71915 ACD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing is designed to accommodate high combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery. Its key advantages include a 25° contact angle for superior axial load capacity, a P4 (ABEC-7) tolerance class for minimal runout, and the use of ceramic balls that reduce centrifugal forces, lower operating temperatures, and enable higher limiting speeds. The bearing is pre-lubricated and available with a preload for immediate, optimized performance.
71915 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing series and size designation (75mm bore, 105mm OD, 16mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high-precision design with enhanced dimensional and running accuracy. |
| HC | Indicates the use of Hybrid Ceramic balls (steel rings with ceramic balls). |
| P4 | Specifies the P4 tolerance class (equivalent to ABEC-7), denoting ultra-precision. |
| A | Denotes that the bearing is supplied with a specific preload for immediate high rigidity. |
71915 ACD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces weight and inertia. This results in lower friction, reduced heat generation, and a higher limiting speed (20,000 rpm) compared to all-steel equivalents.
- High Rigidity & Load Capacity: The 25° contact angle and optimized internal geometry provide excellent resistance to combined loads. The available preload further enhances system stiffness, critical for machining accuracy.
- Precision Performance: Manufactured to P4 tolerance class, this bearing ensures minimal vibration and precise shaft positioning, which is essential for high-speed and high-accuracy applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability at high speeds and provides superior guidance for the ceramic balls.
- Optimized Lubrication: The bearing comes pre-lubricated with a high-performance grease suitable for its specified temperature range (-30°C to 110°C), ensuring long service life and reliable operation from the start.
71915 ACD/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Speed Motors and Drives: Spindles for PCB drilling and semiconductor manufacturing equipment.
