7008 CE/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7008 CE/HCP4AH1
Basic Information
System of measurement
Metric
Weight
0.17 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
15 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2790 lbf
Radial static load rating
1721 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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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7008 CE/HCP4AH1 Bearing Product Overview & Core Advantages
The 7008 CE/HCP4AH1 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This single-row bearing features a 15° contact angle and is supplied with a preload, making it ideal for applications requiring high rigidity and precise rotational accuracy. Its construction with a phenolic cage and ceramic balls contributes to its suitability as a high-speed bearing, capable of handling combined radial and axial loads efficiently. Manufactured to a P4A tolerance class, it guarantees superior running accuracy for critical machinery.
Model Code Breakdown
The model number 7008 CE/HCP4AH1 provides detailed technical specifications:
- 7008: Basic series number, indicating a metric angular contact ball bearing with a 40mm bore and 68mm outside diameter.
- C: Denotes a 15° contact angle.
- E: Indicates optimized internal design and P4A tolerance class.
- HC: Specifies the use of Hybrid Ceramic balls (Silicon Nitride).
- P4A: Defines the high-precision tolerance class, superior to ABEC 7.
- AH1: Indicates the bearing is supplied with a light preload.
7008 CE/HCP4AH1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This enables higher limiting speeds, longer service life, and improved performance in lubricant-starved conditions.
- High Rigidity and Precision: The preload eliminates internal clearance, resulting in greater shaft rigidity, reduced vibration, and enhanced positional accuracy, which is critical for machine tool spindles and other precision equipment.
- Superior High-Speed Performance: The lightweight phenolic resin cage is designed for high rotational speeds, offering excellent acceleration and deceleration characteristics. The ceramic balls further contribute to this by reducing centrifugal forces.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined loads (radial and axial), making it a versatile choice for complex loading scenarios.
7008 CE/HCP4AH1 Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
