S7011 ACD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 ACD/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.64 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13612 lbf
Radial static load rating
13950 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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S7011 ACD/HCP4ADT Bearing Product Overview & Core Advantages
The S7011 ACD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) matched set features two bearings preloaded against each other, delivering superior high rigidity and axial load capacity in one direction. Manufactured to ABEC 7 / P4A tolerance class, it ensures exceptional running accuracy. The combination of a phenolic resin cage, ceramic balls, and factory-applied grease lubrication enables outstanding high-speed performance up to 34,000 rpm, making it an ideal solution for high-precision, high-reliability spindles and machinery.
S7011 ACD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | Angular Contact, Duplex Tandem arrangement | Pre-loaded pair for high unidirectional axial stiffness and load capacity. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced centrifugal force, lower friction, and extended service life at high speeds. |
| P4A | High Precision Tolerance Class (ABEC 7) | Guarantees exceptional dimensional and running accuracy for precise applications. |
S7011 ACD/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex tandem (DT) arrangement with preload creates a highly rigid bearing system capable of supporting significant axial loads in one direction, minimizing shaft deflection under load.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduce centrifugal forces and inertial mass. This, combined with optimized grease lubrication, allows for a very high limiting speed of 34,000 rpm.
- Enhanced Durability & Temperature Resistance: Ceramic balls are harder and more wear-resistant than steel, and the phenolic cage can withstand higher operating temperatures, contributing to a longer service life.
- Sealed & Pre-Lubricated: The sealed design protects against contamination, and the factory-applied grease ensures immediate operation and long-term, maintenance-free performance within the specified temperature range of -30°C to 110°C.
S7011 ACD/HCP4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision, speed, and rigidity are critical. Typical uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- High-Speed Automation: Robotic arms, direct-drive systems, and precision positioning equipment.
- Medical & Dental Equipment: High-speed handpieces and laboratory instrumentation.
