S71901 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71901 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.01 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
13
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
596 lbf
Radial static load rating
281 lbf
Limiting speed
85 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:
$ 123.95
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71901 CD/HCP4A Bearing Product Overview & Core Advantages
The S71901 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is designed to accommodate combined loads, efficiently handling both radial and significant one-directional axial loads. Its compact design, featuring a 12 mm bore and 6 mm width, makes it ideal for space-constrained, high-speed assemblies. Manufactured to the stringent P4 (ABEC-7) tolerance class and featuring a ceramic ball and phenolic cage construction, it delivers superior rigidity, reduced friction, and extended service life in high-rotation environments.
S71901 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a series of high-precision, super-precision angular contact ball bearings. |
| 1901 | Specifies the bearing size series: 19 for the series and 01 for a 12mm bore diameter. |
| CD | Signifies a 15° contact angle and a specific internal design optimized for high rigidity and speed. |
| HC | Denotes the use of Hybrid Ceramic balls (ceramic balls with steel rings), offering benefits like electrical resistance, lower density, and higher speed capability. |
| P4A | Confirms the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
S71901 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and P4 tolerance class provide superior rotational accuracy and system stiffness, critical for minimizing deflection under load.
- Enhanced High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 85,000 rpm.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads, making it suitable for applications with complex loading conditions.
- Reduced Friction and Heat Generation: Hybrid ceramic construction offers smoother operation with less friction and heat build-up compared to all-steel bearings, contributing to longer lubricant life and reduced energy consumption.
- Pre-Lubricated and Sealed: Comes pre-lubricated with high-performance grease suitable for the specified temperature range (-30°C to 110°C) and is sealed to protect against contamination.
S71901 CD/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key industries and equipment include:
- High-Frequency Spindles for CNC machining centers and PCB drilling machines
- Precision Instrumentation and optical scanners
- High-Speed Motors and turbo-molecular pumps
- Medical and Dental Handpieces
- Aerospace Actuators and auxiliary power units
