71818 ACD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71818 ACD/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
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
31
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4568 lbf
Radial static load rating
5625 lbf
Limiting speed
15 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:
$ 1131.77
/ each
In Stock
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71818 ACD/P4 Bearing Product Overview & Core Advantages
The 71818 ACD/P4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rigidity. Designed to accommodate primarily axial loads in one direction, combined with radial loads, it features a P4 (ABEC-7) tolerance class for exceptional running accuracy. Its compact design, with a 13 mm width, makes it ideal for space-constrained, high-performance assemblies requiring reliable operation under high-speed conditions.
71818 ACD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | 25° Contact Angle, High Rigidity Design | Optimized for applications requiring high axial load capacity and stiffness. |
| P4 | Tolerance Class (ABEC-7) | Denotes ultra-precision manufacturing for minimal runout and vibration, essential for high-speed and high-accuracy applications. |
71818 ACD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction enable the bearing to handle significant one-direction axial loads and radial loads simultaneously, providing stable and rigid support for shafts.
- High-Speed Performance: The lightweight phenolic resin cage ensures smooth operation, reduced centrifugal forces, and lower friction, contributing to the high limiting speed of 15,000 rpm.
- Precision Engineering: Manufactured to P4 precision class, this bearing guarantees tight dimensional tolerances and superior running accuracy, minimizing noise and vibration for demanding applications.
- Optimized Internal Geometry: With 31 precision balls of 7.144 mm diameter, the bearing ensures even load distribution and smooth rotational characteristics.
71818 ACD/P4 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Actuation Systems
