S71915 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71915 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.36 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.008mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
34
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3150 lbf
Radial static load rating
2970 lbf
Limiting speed
20 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:
$ 964.47
/ each
In Stock
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S71915 CB/HCP4A Bearing Product Overview & Core Advantages
The S71915 CB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its ceramic balls and P4 (ABEC-7) tolerance class, ensuring ultra-low runout and smooth operation. Its key advantage lies in its ability to handle high-speed operations up to 20,000 rpm while supporting significant combined loads (radial and axial). The 15° contact angle is optimized for high-speed, high-precision applications, and the bearing comes preloaded and pre-lubricated for immediate, maintenance-free installation, offering superior reliability and a long service life.
S71915 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1915 | Dimension series code; indicates a bore diameter of 75 mm, an outside diameter of 105 mm, and a width of 16 mm. |
| C | Specifies a 15° contact angle. |
| B | Indicates a 40° contact angle. (Note: This appears to be a conflict with "C". In standard nomenclature, "CB" often denotes a specific combination of internal clearance and preload designed for moderate stiffness and speed. For this specific bearing, the "CB" suffix signifies a universal combination preload.) |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Denotes a very high precision tolerance class (equivalent to ABEC-7). |
| A | Indicates that the bearing ring has specific tolerance requirements that are different from standard P4, typically even tighter. |
S71915 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with steel rings significantly reduces weight, centrifugal force, and friction. This construction enables higher limiting speeds, reduced operating temperature, and extended lubricant life compared to all-steel bearings.
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent dimensional stability and low friction at high speeds, contributing to smooth rotation and high acceleration capability.
- P4 Super-Precision: Manufactured to P4 tolerance class, this bearing guarantees minimal radial and axial runout, which is critical for applications demanding extreme rotational accuracy and system rigidity.
- Optimized Preload: The bearing is supplied with a pre-set preload, which increases system stiffness, improves guidance accuracy, and minimizes non-repetitive runout, leading to superior performance in precision spindles.
- Sealed & Lubricated: The sealed design protects against contamination and retains lubricant, ensuring long-term, maintenance-free operation in clean environments.
S71915 CB/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for applications where high speed, high precision, and high rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy gearboxes.
- Semiconductor Manufacturing Equipment: Wafer handling robots and stepper stages.
- Medical Devices: High-speed dental handpieces and surgical drill spindles.
- Aerospace Instrumentation: Gyroscopes and navigation system components.
