7018 ACDTP/P4B
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 ACDTP/P4B
Basic Information
System of measurement
Metric
Weight
1.16 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
140 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
16672 lbf
Radial static load rating
16200 lbf
Limiting speed
8.5 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:
$ 921.67
/ each
In Stock
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7018 ACDTP/P4B Bearing Product Overview & Core Advantages
The 7018 ACDTP/P4B is a single-row angular contact ball bearing designed for applications requiring exceptional precision and high-speed performance. Engineered to P4 (ABEC-7) tolerance class, it delivers superior running accuracy and rotational stability. Its primary function is to accommodate combined loads, efficiently handling significant radial loads and axial loads in one direction simultaneously. The bearing features a 25° contact angle and is supplied with preload, resulting in high system rigidity, precise shaft positioning, and excellent operational characteristics at high rotational speeds.
7018 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| DTP | The bearing is supplied with a specific preload for immediate high-rigidity performance. |
| P4 | Indicates a P4 tolerance class (equivalent to ABEC-7), signifying very high precision. |
| B | Denotes a 25° contact angle. |
7018 ACDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The combination of a 25° contact angle and factory-applied preload ensures high system stiffness, minimizes axial and radial play, and provides exceptional rotational accuracy, making it ideal for precision machinery.
- Superior Load Capacity: The optimized internal geometry allows it to support high radial dynamic load ratings (16,672 lbf) and static load ratings (16,200 lbf), as well as substantial one-direction axial loads.
- High-Speed Performance: The lightweight and robust phenolic resin cage guides the balls effectively, reducing centrifugal forces and friction, which contributes to a high limiting speed of 8,500 rpm.
- Optimized Internal Design: Manufactured from high-grade chrome steel for rings and balls, ensuring durability and long service life. The specified ball diameter and quantity are engineered for optimal load distribution.
7018 ACDTP/P4B Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace and Defense Instrumentation
