S7005 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7005 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.068 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1784 lbf
Radial static load rating
878 lbf
Limiting speed
50 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:
$ 146.86
/ each
In Stock
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S7005 ACE/HCP4A Bearing Product Overview & Core Advantages
The S7005 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed and rigidity. This single-row bearing features a 25° contact angle and is supplied with a preload, delivering superior axial and radial load capacity in a compact 25 mm bore design. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance up to 50,000 rpm, while the sealed and pre-lubricated design ensures long-term, maintenance-free operation in a wide temperature range.
S7005 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Standard bearing series designation with a 25 mm bore and 47 mm outside diameter. |
| ACE | Indicates a 25° contact angle and that the bearing is supplied with a preload for enhanced stiffness. |
| HC | Signifies the use of hybrid ceramic balls (Silicon Nitride), which reduce centrifugal forces and enable higher speeds. |
| P4 | Denotes an ultra-high-precision tolerance class (ABEC-7), ensuring minimal runout and vibration. |
| A | Specifies that the bearing is a single, non-paired unit. |
S7005 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and applied preload provide excellent resistance to combined loads, offering high axial and radial stiffness for precise positioning.
- Superior High-Speed Performance: The combination of lightweight phenolic resin cage and hybrid ceramic balls significantly reduces rotational mass and friction, enabling stable operation at the limiting speed of 50,000 rpm.
- Extended Service Life & Reliability: Sealed construction protects against contamination, while the factory-applied lubrication is suitable for a broad operating temperature range from -30°C to 110°C, ensuring long-lasting, maintenance-free performance.
- Precision Engineering: Manufactured to P4 (ABEC-7) tolerance standards with tight bore and outside diameter tolerances, this bearing guarantees minimal vibration and runout for critical applications.
S7005 ACE/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling and grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Medical and Dental Equipment Drives
- Aerospace Instrumentation and Guidance Systems
