S7018 ACE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7018 ACE/HCP4BVG275
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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
6750 lbf
Limiting speed
14 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:
$ 1105.89
/ each
In Stock
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S7018 ACE/HCP4BVG275 Bearing Product Overview & Core Advantages
The S7018 ACE/HCP4BVG275 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed, rigidity, and accuracy. Its single-row design with a 25° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously. Manufactured to the stringent P4 (ABEC-7) tolerance class, this bearing ensures superior running accuracy. Key advantages include its ceramic ball construction for reduced centrifugal force and higher limiting speeds, and its phenolic cage for lightweight, high-strength performance at high rotational velocities.
S7018 ACE/HCP4BVG275 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series and size designation (90mm bore, 140mm OD, 24mm width). |
| ACE | Internal design code, typically indicating optimized internal geometry and a 25° contact angle. |
| HC | Denotes the use of Hybrid Ceramic balls (steel rings with ceramic balls). |
| P4 | Specifies the high-precision tolerance class (ABEC-7 equivalent), ensuring minimal runout and vibration. |
| BVG275 | Lubrication code, indicating the bearing is pre-lubricated with a specific high-performance grease suitable for the specified temperature range. |
S7018 ACE/HCP4BVG275 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces weight and centrifugal forces, enabling a higher limiting speed of 14,000 rpm. This also provides superior resistance to wear and a longer operational life.
- High Rigidity & Load Capacity: The 25° contact angle and robust internal geometry provide excellent stiffness, making it ideal for applications requiring precise shaft positioning under combined radial and axial loads.
- Optimized High-Speed Cage: The phenolic (resin) cage is lightweight and possesses excellent strength-to-weight ratio, ensuring stability and reduced friction at ultra-high rotational speeds.
- Sealed & Pre-Lubricated: The sealed design protects against contamination, while the factory-applied high-performance grease ensures immediate operation and long-term, maintenance-free service within the specified temperature range.
S7018 ACE/HCP4BVG275 Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery and systems, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- High-Frequency Motors & Spindles: Used in electric motors and spindles that operate at very high rotational speeds.
- Precision Robotics: In robotic arm joints and actuators where high stiffness and low inertia are critical.
- Aerospace & Defense Systems: For gyroscopes, radar systems, and other instrumentation demanding high reliability and speed.
- Medical Equipment: In high-speed dental handpieces and imaging device rotors.
