71913 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71913 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.17 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
65 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4680 lbf
Radial static load rating
3825 lbf
Limiting speed
26 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:
$ 600.31
/ each
In Stock
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71913 CD/HCP4A Bearing Product Overview & Core Advantages
The 71913 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate combined loads (radial and axial loads in one direction), this bearing features a P4 (ABEC-7) tolerance class for superior running accuracy, a ceramic ball construction for reduced weight and enhanced high-speed capability, and is supplied preloaded for immediate high-stiffness performance. Its compact design and phenolic cage make it ideal for demanding, space-constrained applications.
71913 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| CD | High Contact Angle (15°) and Duplex (Face-to-Face/Back-to-Back) arrangement designation. | Optimized for high axial load capacity and precise shaft positioning. |
| HC | Hybrid Ceramic (Silicon Nitride balls). | Lower density for higher limiting speeds, reduced friction, and longer service life. |
| P4A | P4 (ABEC-7) precision class with specific running accuracy requirements. | Guarantees ultra-high running accuracy and smooth operation for precision machinery. |
71913 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: Supplied as a preloaded unit, this bearing provides immediate high system stiffness, minimizing deflection under load for superior positional accuracy.
- High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage significantly reduces centrifugal forces, enabling a high limiting speed of 26,000 rpm.
- Precision & Accuracy: Manufactured to a P4 tolerance class, it ensures minimal runout and vibration, which is critical for applications requiring extreme precision.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant axial loads in one direction in combination with radial loads.
- Temperature Resistance: The phenolic cage and ceramic balls contribute to stable performance across a wide temperature range from -30°C to 110°C.
71913 CD/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation instruments.
