S7026 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7026 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
2.69 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.011mm to 0
Width
33 mm
Width tolerance
-0.24mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
22.225 mm
Ball quantity
21
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
31500 lbf
Radial static load rating
33750 lbf
Limiting speed
7.5 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:
$ 2103.02
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7026 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7026 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed and rigidity. This single-row bearing is distinguished by its P4 (ABEC-7) tolerance class, ensuring ultra-precise rotational accuracy. Its 25° contact angle is optimized to support significant combined loads—handling both high radial and one-directional axial loads simultaneously. Preloaded and pre-lubricated from the factory, it delivers immediate high rigidity and stable performance, making it an ideal choice for high-speed spindles and precision machinery where reliability is paramount.
S7026 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | Angular Contact, 25° Contact Angle | Optimized for high axial load capacity and rigidity. |
| HCP4A | Hybrid Ceramic (Silicon Nitride) Balls, P4 Precision, Preload | Enables higher limiting speeds, reduced friction, and extended service life under demanding conditions. |
S7026 ACD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic (Si3N4) balls significantly reduces centrifugal forces, lowers operating temperature, and provides electrical insulation, contributing directly to the high limiting speed of 7,500 rpm.
- High Rigidity & Preload: The bearing is supplied with a preload, eliminating internal clearance. This ensures maximum system stiffness, minimizes deflection under load, and improves positional accuracy.
- Superior Load Capacity: With a dynamic load rating of 31,500 lbf and a static load rating of 33,750 lbf, it reliably handles the combined loads encountered in high-performance applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability at high speeds, contributing to smooth operation and extended service life.
- Sealed & Lubricated Design: Comes as a sealed, lubricated unit, protecting against contamination and providing maintenance-free operation within its specified temperature range.
S7026 ACD/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Speed Motors: Electric spindles and high-frequency motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
