7018 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7018 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
1.01 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
10 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:
$ 921.83
/ each
In Stock
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7018 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The 7018 ACDTP/HCP4B is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing features a 25° contact angle and is supplied with a preload, delivering superior running accuracy and high rigidity. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance and thermal stability. Designed to handle combined loads, it is an ideal solution for machine tool spindles and other high-precision machinery.
7018 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
The model number 7018 ACDTP/HCP4B deciphers its specific technical features:
- 7018: Basic series designation, indicating a metric angular contact ball bearing with a 90mm bore and 140mm outside diameter.
- AC: Angular Contact design.
- D: Signifies a high contact angle of 25°.
- TP: Indicates the cage material is Phenolic (synthetic resin), beneficial for high speeds and reduced weight.
- HC: Denotes the use of Hybrid Ceramic balls (ceramic balls with steel rings).
- P4: Specifies the tolerance class equivalent to ABEC-7, ensuring ultra-precision.
- B: Indicates the bearing is supplied with a preload for enhanced stiffness.
7018 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity and Running Accuracy: The application of a preload eliminates internal clearance, resulting in significantly increased system stiffness and precise shaft positioning, critical for machining accuracy.
- Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a very high limiting speed, reducing friction and heat generation.
- Excellent Load Capacity: The 25° contact angle is optimized to efficiently support substantial combined loads (radial and axial loads acting simultaneously).
- Thermal Stability: The phenolic cage maintains its integrity and dimensional stability across the operating temperature range, ensuring consistent performance.
- Pre-Lubricated for Immediate Use: The bearing is lubricated from the factory, ready for installation and initial operation.
7018 ACDTP/HCP4B Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Equipment
