7005 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.07 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2151 lbf
Radial static load rating
1170 lbf
Limiting speed
67 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:
$ 93.44
/ each
In Stock
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7005 CD/HCP4A Bearing Product Overview & Core Advantages
The 7005 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, along with significant radial loads. Its key advantages stem from a P4 (ABEC-7) tolerance class, a 15° contact angle, and the use of advanced materials, including a ceramic ball set and a phenolic cage. This configuration ensures superior high-speed capability, reduced friction, and extended service life in demanding operational environments.
7005 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7005 CD/HCP4A provides specific technical details:
- 7005: Basic bearing series, indicating a metric bore diameter of 25 mm, outside diameter of 47 mm, and width of 12 mm.
- C: Denotes a 15° contact angle, optimized for high-speed applications requiring high rigidity.
- D: Indicates that the bearing is supplied with a specific preload for enhanced stiffness and rotational accuracy.
- HC: Signifies the use of Hybrid Ceramic components, specifically ceramic balls with steel rings.
- P4: Identifies the tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy.
- A: Designates a single bearing with a specific internal design and contact angle.
7005 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 15° contact angle and a factory-applied preload (D) provides superior axial and radial stiffness, minimizing deflection under load and ensuring precise shaft positioning. The P4 precision class guarantees exceptionally low runout and smooth operation.
- High-Speed Performance: The hybrid ceramic design (HC) with lightweight ceramic balls and a phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed. This makes the bearing ideal for high-speed spindles and other rapid-rotation applications.
- Extended Service Life and Reliability: Ceramic balls are harder, lighter, and more resistant to wear and corrosion than steel balls. They also operate effectively with less lubrication. The phenolic cage is durable and provides excellent performance at high speeds. The bearing is pre-lubricated for immediate operation.
- Temperature Resistance: The materials and design allow for a stable operating temperature range from -30°C to 110°C.
7005 CD/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Medical Equipment: Dental handpieces, high-speed centrifuges.
- Aerospace and Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- High-Frequency Motors and Turbomachinery: Where high rotational speeds and accuracy are critical.
