7007 ACD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7007 ACD/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5445 lbf
Radial static load rating
4050 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
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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7007 ACD/HCP4ADT Bearing Product Overview & Core Advantages
The 7007 ACD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) matched set configuration delivers superior axial rigidity and is optimized for handling high thrust loads in a single direction. Manufactured to P4A tolerance class, it ensures outstanding running accuracy. The combination of a phenolic cage and ceramic balls enables high-speed operation and reduces rotational mass, making it an ideal solution for high-speed and high-rigidity spindle systems.
7007 ACD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle for optimal thrust load capacity. |
| D | Duplex Tandem (DT) arrangement. Two bearings are matched and preloaded to act as a single unit for maximum axial stiffness. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration for critical applications. |
7007 ACD/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem matched set is preloaded to eliminate axial play, providing exceptional stiffness and the ability to withstand heavy combined loads, particularly unidirectional thrust loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage and ceramic balls (Si3N4) significantly reduce centrifugal forces, allowing for a high limiting speed of 56,000 rpm. This design minimizes heat generation and ensures stable operation.
- Precision Engineering: Manufactured to P4A tolerances with tight bore and outside diameter tolerances, this bearing guarantees high rotational accuracy and minimal vibration.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated and is ready for installation, simplifying the assembly process.
7007 ACD/HCP4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: High-speed rotors in measuring and testing equipment.
- Advanced Robotics: Joints and arm assemblies requiring high stiffness and accuracy.
- High-Frequency Spindles: PCB drilling and routing spindles.
