71818 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71818 CD/P4
Basic Information
System of measurement
Metric
Weight
0.28 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
115 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
31
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4860 lbf
Radial static load rating
5962 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 282.49
/ each
In Stock
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71818 CD/P4 Bearing Product Overview & Core Advantages
The 71818 CD/P4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. As a P4 (ABEC-7) tolerance class bearing, it is designed to handle significant combined loads, offering excellent performance under both radial and axial forces. Its compact design, featuring a 15° contact angle, provides high rigidity and is ideally suited for high-speed operations, making it a reliable component in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71818 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 90mm bore, 115mm OD, and 13mm width. |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise operation. |
| P4 | Specifies the tolerance class, equivalent to ABEC-7, denoting very high dimensional and running accuracy. |
71818 CD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle provides optimal stiffness for applications requiring minimal deflection. The P4 precision grade ensures exceptionally smooth and accurate rotation.
- Superior Load Capacity: Engineered to support high combined loads, this bearing efficiently manages both radial forces and unidirectional axial loads, thanks to its optimized internal geometry.
- High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 17,000 rpm. The bearing is pre-lubricated for immediate high-speed operation.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational lifespan under demanding conditions.
71818 CD/P4 Bearing Typical Application Areas
The 71818 CD/P4 is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment
- Aerospace Actuation Systems
