S7008 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7008 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
0.17 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.007mm to 0
Width
15 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3578 lbf
Radial static load rating
2340 lbf
Limiting speed
22 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:
$ 257.09
/ each
In Stock
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S7008 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The S7008 ACDTP/HCP4B is a high-precision, single-row angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. Its design is optimized to support combined loads, handling significant radial loads and axial loads in one direction simultaneously. Key advantages include its P4 (ABEC-7) super-precision tolerance class, a phenolic resin cage for reduced weight and superior high-speed capability, and ceramic balls that minimize friction and heat generation. This combination makes it an ideal solution for high-rigidity, high-reliability spindle applications.
S7008 ACDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7008 | Basic bearing series and size designation (40mm bore, 68mm OD, 15mm width). |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| DTP | Indicates a duplex pair configuration with a specific preload (available) for enhanced rigidity. |
| HC | Refers to the Hybrid Ceramic construction, featuring ceramic balls for superior performance. |
| P4B | Denotes the P4 precision tolerance class with specific running accuracy requirements. |
S7008 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 25° contact angle and preload provides exceptional system stiffness, crucial for minimizing deflection under load in precision machinery. The P4 tolerance class ensures minimal runout and vibration.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the ceramic (silicon nitride) balls offer lower density and superior lubrication properties. This combination enables the bearing to achieve a high limiting speed of 22,000 rpm.
- Enhanced Durability and Life: Hybrid ceramic construction significantly reduces friction and operating temperature, leading to extended lubricant life and overall bearing service life. It also provides excellent electrical insulation and resistance to wear.
- Optimized Load Capacity: Engineered to handle combined radial and axial loads efficiently, with a dynamic load rating of 3578 lbf and a static load rating of 2340 lbf.
S7008 ACDTP/HCP4B Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces and high-speed surgical drills.
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Frequency Motors and Spindles: Where minimal runout and maximum rotational accuracy are critical.
