7018 CD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CD/P4A
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
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
17212 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:
$ 237.73
/ each
In Stock
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7018 CD/P4A Bearing Product Overview & Core Advantages
The 7018 CD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction and combined loads, its 15° contact angle and P4 (ABEC-7) tolerance class make it an ideal choice for machine tool spindles and other high-performance machinery. The bearing is preloaded and pre-lubricated, ensuring immediate operational readiness, high running accuracy, and a compact design that saves space in demanding arrangements.
7018 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a specific optimized internal design and contact angle for high rigidity and precise operation. |
| P4A | Denotes a high-precision tolerance class (equivalent to ABEC-7), with enhanced dimensional and running accuracy for demanding applications. |
7018 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and P4 tolerance provides high stiffness and minimal runout, essential for applications like machine tool spindles.
- Optimized Load Capacity: Engineered to handle significant axial loads in one direction and combined (radial and axial) loads, with a dynamic load rating of 17,842 lbf and static load rating of 17,212 lbf.
- High-Speed Capability: The phenolic resin cage offers low friction and high strength, contributing to a high limiting speed of 15,000 rpm and stable operation at high velocities.
- Pre-Lubricated & Ready-to-Use: Factory-applied lubrication and preload ensure immediate performance, reduced setup time, and smooth operation from startup.
7018 CD/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-precision, high-speed rotational systems. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Equipment
- Aerospace Instrumentation
