S7018 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
1.16 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8055 lbf
Radial static load rating
7200 lbf
Limiting speed
15.5 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:
$ 1105.55
/ each
In Stock
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S7018 CE/HCP4A Bearing Product Overview & Core Advantages
The S7018 CE/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and high-speed capability. Its primary advantage lies in its ability to accommodate combined loads—significant radial loads and substantial axial loads in one direction simultaneously. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees superior running accuracy. The combination of a phenolic resin cage and ceramic balls enables superior high-speed performance and reduced rotational inertia, making it an ideal choice for high-rigidity, high-RPM spindles and precision machinery.
S7018 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| S7018 | Basic bearing series designation, indicating a 90mm bore, 140mm OD, 24mm width high-precision angular contact bearing. |
| CE | Signifies the use of ceramic (Silicon Nitride) balls, which offer lower density, reduced centrifugal force, and superior performance at high speeds. |
| HC | Indicates a phenolic resin (Polyamide) cage. This lightweight cage material is ideal for high-speed applications and offers excellent strength and guidance. |
| P4A | Denotes the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
S7018 CE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The ceramic balls significantly reduce centrifugal forces and friction, while the lightweight phenolic cage ensures stability, collectively enabling a high limiting speed of 15,500 rpm.
- High Rigidity and Load Capacity: The optimized 15° contact angle and robust internal geometry provide high rigidity, supporting a dynamic load rating of 8055 lbf and a static load rating of 7200 lbf for reliable operation under combined loads.
- Thermal Stability: Ceramic balls have a lower coefficient of thermal expansion than steel, contributing to more consistent preload and performance across the operating temperature range of -30°C to 110°C.
- Pre-Lubricated for Immediate Use: The bearing is factory-lubricated with high-performance grease suitable for its specified speed and temperature range, ensuring optimal performance from initial operation.
S7018 CE/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Speed Motors: Motors and drives requiring minimal vibration and high rotational accuracy.
- Advanced Robotics: High-precision joints and rotary actuators.
