S7018 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7018 ACE/HCP4A Bearing Product Overview & Core Advantages
The S7018 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This sealed bearing features a single, preloaded arrangement and is manufactured to a P4 (ABEC-7) tolerance class, ensuring superior running accuracy. Its 25° contact angle is optimized to handle significant combined loads, including high radial and one-directional axial loads. The use of ceramic balls and a phenolic cage contributes to its high-speed capability, low heat generation, and extended service life, making it an ideal solution for high-reliability, high-rigidity systems.
S7018 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series and size designation (90mm bore, 140mm OD, 24mm width). |
| ACE | Indicates a 25° contact angle and a specific internal design optimized for high precision and preload. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes the tolerance class P4 (ABEC-7) and specific accuracy enhancements. |
S7018 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The preloaded, single arrangement and P4 tolerance class ensure minimal axial and radial play, providing superior shaft positioning accuracy and system stiffness.
- Enhanced Speed and Temperature Performance: The combination of a lightweight phenolic cage and ceramic balls reduces centrifugal forces and friction, enabling a high limiting speed of 14,000 rpm and stable operation across a wide temperature range (-30° to 110 °C).
- Superior Load Capacity: The 25° contact angle design allows the bearing to efficiently support high radial dynamic load ratings (7605 lbf) and significant axial loads simultaneously.
- Longevity and Reliability: As a sealed and lubricated bearing, it is protected from contamination and is ready for immediate use, offering a long, maintenance-free service life in clean environments.
S7018 ACE/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles for CNC milling and grinding machines
- High-speed Precision Drives and Robotic Arms
- Aerospace Actuators and Gyroscopes
- High-frequency Medical Device Motors (e.g., dental handpieces)
